As droughts become longer and more intense, impacts on terrestrial primary productivity are expected to increase progressively. Yet, some ecosystems appear to acclimate to multiyear drought, with constant or diminishing reductions in productivity as drought duration increases. We quantified the combined effects of drought duration and intensity on aboveground productivity in 74 grasslands and shrublands distributed globally. Ecosystem acclimation with multiyear drought was observed overall, except when droughts were extreme (i.e., ≤1-in-100-year likelihood of occurrence). Productivity losses after four consecutive years of extreme drought increased by ~2.5-fold compared with those of the first year. These results portend a foundational shift in ecosystem behavior if drought duration and intensity increase, from maintenance of reduced functioning over time to progressive and profound losses of productivity when droughts are extreme.
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Cousins, S., Cusack, D.F., Dahlke, S., Daleo, P., Dietterich, L.H., Dubbert, M., Eisenhauer, N., Forte, T.G., Funk, F.A., Galiano, D., Greenville, A.C., Han, L., Haugum, S.V., Hautier, Y., Hector, A., Henry, H.A., Hoss, D., Isbell, F., Jordan, S.E., Ke, Y., Kelly, E.F., Koerner, S.E., Kreyling, J., Kroel-Dulay, G., Kröpfl, A.I., Kübert, A., Kulmatiski, A., Lamb, E.G., Larsen, K.S., Lee, S.R., Limbu, S.P., Linstädter, A., Liu, S., Longo, G., Loydi, A., Luan, J., Lubbe, F.C., Malyshev, A.V., McIntire, C.D., Metcalfe, D.B., Mokoka, M.V., Mori, A.S., Mudongo, E., Newman, G.S., Nielsen, U.N., Ochoa-Hueso, R., O'Connor, R.C., Ogaya, R., Oñatibia, G.R., Orban, I., Osborne, B.B., Otfinowski, R., Pärtel, M., Pascual, J., Peñuelas, J., Peri, P.L., Pescador, D.S., Peter, G., Petraglia, A., Picon-Cochard, C., Pillar, V.D., Piñeiro-Guerra, J.M., Ploughe, L.W., Plowes, R.M., Portales-Reyes, C., Prober, S.M., Pueyo, Y., Rahmati, G., Reed, S.C., Rodríguez, D.A., Rogers, W.E., Roscher, C., Rowley, D.W., Sánchez, A.M., Santos, B.A., Schellenberg, M.P., Scherer-Lorenzen, M., Seabloom, E.W., Shen, R., Shi, B., Souza, L., Stampfli, A., Standish, R.J., Sternberg, M., Sun, W., Sünnemann, M., Tedder, M., Terry, T., Thorvaldsen, P., Tielbörger, K., Tissink, M., Vadeboncoeur, M.A., Valdecantos, A., van den Brink, L., Vandvik, V., Velle, L.G., Wanke, S., Wardle, G.M., Wei, C., Werner, C., Wiehl, G., Williams, J.L., Wolf, A.A., Wu, H., Xu, C., Yang, X., Yost, J.L., Young, A.L., Yue, P., Zeberio, J.M., Zeiter, M., Zhang, H., Zhu, J., and Zuo, X., 2025, Drought intensity and duration interact to magnify losses in primary productivity: Science, v. 390, no. 6770, p. 284-289, https://doi.org/10.1126/science.ads8144.","productDescription":"6 p.","startPage":"284","endPage":"289","ipdsId":"IP-173236","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research 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Switzerland","active":true,"usgs":false}],"preferred":false,"id":953193,"contributorType":{"id":1,"text":"Authors"},"rank":173},{"text":"Zhang, Haiyang","contributorId":364772,"corporation":false,"usgs":false,"family":"Zhang","given":"Haiyang","affiliations":[],"preferred":false,"id":953792,"contributorType":{"id":1,"text":"Authors"},"rank":174},{"text":"Zhu, Juntao","contributorId":333245,"corporation":false,"usgs":false,"family":"Zhu","given":"Juntao","email":"","affiliations":[{"id":79825,"text":"Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China","active":true,"usgs":false}],"preferred":false,"id":953194,"contributorType":{"id":1,"text":"Authors"},"rank":175},{"text":"Zuo, Xiaoan","contributorId":333247,"corporation":false,"usgs":false,"family":"Zuo","given":"Xiaoan","email":"","affiliations":[{"id":79826,"text":"Urat Desert-grassland Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou 730000, China","active":true,"usgs":false}],"preferred":false,"id":953195,"contributorType":{"id":1,"text":"Authors"},"rank":176}]}} ,{"id":70273934,"text":"70273934 - 2025 - Correspondence between satellite-derived and long-term field observations of vegetation cover at Great Basin experimental treatments.","interactions":[],"lastModifiedDate":"2026-02-18T15:21:19.569373","indexId":"70273934","displayToPublicDate":"2025-10-16T08:14:43","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6002,"text":"Rangeland Ecology & Management","active":true,"publicationSubtype":{"id":10}},"title":"Correspondence between satellite-derived and long-term field observations of vegetation cover at Great Basin experimental treatments.","docAbstract":"Vegetation treatments are frequently utilized in Western US rangelands to reduce woody plant cover in sagebrush stands threatened by increased wildfire risk and in pinyon-juniper woodlands expanding into formerly high-value sagebrush habitats. Despite widespread use of these treatments, monitoring data to evaluate long-term vegetation responses are often insufficient or absent. Long-term field experiments and remote-sensing based vegetation data may be complementary for assessing treatment effectiveness across temporal and spatial scales. The SageSTEP project experimentally implemented treatments at numerous sites across the Intermountain West and monitored the subsequent response of vegetation cover components with 15+ yr of field observations. However, while pretreatment data were collected in the year of implementation, long-term observations of pretreatment vegetation conditions are lacking in the SageSTEP database. Remote-sensing based time-series maps (1985–2023) of vegetation cover from Rangeland Condition Monitoring Assessment and Projection (RCMAP) could fill temporal gaps in monitoring data and scale findings across broader extents. We evaluate the relationship between pretreatment vegetation cover in the RCMAP data and the post-treatment response in both the RCMAP and field observations. Additionally, we explore the correspondence between SageSTEP field observations and RCMAP at various scales, and examine key factors related to the strength of relationships. Overall, SageSTEP and RCMAP data show a similar direction of treatment effect for each component, and to a lesser extent the magnitude of effect. SageSTEP and RCMAP data tended to agree most strongly where treatment effects were strong; when averaged across broader spatial scales; and for components such as tree and bare ground that are more easily distinguished spectrally. Remote sensing tools such as RCMAP, in combination with field-based climate and vegetation observations, can help assess postdisturbance recovery trajectories and facilitate regional decision-making around treatment alternatives, fire risk reduction, and protection of critical habitats.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.rama.2025.09.007","usgsCitation":"Rigge, M.B., Case, M.F., Shaff, S.E., Ellsworth, L., Bunde, B., and Postma, K., 2025, Correspondence between satellite-derived and long-term field observations of vegetation cover at Great Basin experimental treatments.: Rangeland Ecology & Management, v. 103, p. 341-355, https://doi.org/10.1016/j.rama.2025.09.007.","productDescription":"15 p.","startPage":"341","endPage":"355","ipdsId":"IP-167032","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":500252,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.rama.2025.09.007","text":"Publisher Index Page"},{"id":500139,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Great Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.92270708025353,\n 48.478358686610875\n ],\n [\n -117.92270708025353,\n 36.755797428874644\n ],\n [\n -107.75776722181647,\n 36.755797428874644\n ],\n [\n -107.75776722181647,\n 48.478358686610875\n ],\n [\n -117.92270708025353,\n 48.478358686610875\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"103","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rigge, Matthew B. 0000-0003-4471-8009 mrigge@usgs.gov","orcid":"https://orcid.org/0000-0003-4471-8009","contributorId":751,"corporation":false,"usgs":true,"family":"Rigge","given":"Matthew","email":"mrigge@usgs.gov","middleInitial":"B.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":955806,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Case, Madelon Florence 0000-0003-4830-5324","orcid":"https://orcid.org/0000-0003-4830-5324","contributorId":329634,"corporation":false,"usgs":true,"family":"Case","given":"Madelon","email":"","middleInitial":"Florence","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":955807,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shaff, Scott E. 0000-0001-8978-9260","orcid":"https://orcid.org/0000-0001-8978-9260","contributorId":219813,"corporation":false,"usgs":true,"family":"Shaff","given":"Scott","middleInitial":"E.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"preferred":true,"id":955808,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ellsworth, Lisa M.","contributorId":328375,"corporation":false,"usgs":false,"family":"Ellsworth","given":"Lisa M.","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":955809,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bunde, Brett 0000-0003-0228-779X","orcid":"https://orcid.org/0000-0003-0228-779X","contributorId":288364,"corporation":false,"usgs":false,"family":"Bunde","given":"Brett","affiliations":[{"id":61731,"text":"KBR","active":true,"usgs":false}],"preferred":false,"id":955810,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Postma, Kory 0000-0001-8058-498X","orcid":"https://orcid.org/0000-0001-8058-498X","contributorId":293879,"corporation":false,"usgs":false,"family":"Postma","given":"Kory","affiliations":[{"id":63548,"text":"KBRwyle, under contract to USGS","active":true,"usgs":false}],"preferred":false,"id":955811,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70273077,"text":"70273077 - 2025 - Museum records provide unique information about the distribution of the Yellow Lampmussel Lampsilis cariosa (Unionidae)","interactions":[],"lastModifiedDate":"2025-12-12T19:14:40.520059","indexId":"70273077","displayToPublicDate":"2025-10-15T12:07:54","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1699,"text":"Freshwater Science","active":true,"publicationSubtype":{"id":10}},"title":"Museum records provide unique information about the distribution of the Yellow Lampmussel Lampsilis cariosa (Unionidae)","docAbstract":"Natural history museum records may provide unique information on the distribution of species that can supplement survey data collected by resource managers. However, there can be challenges to using museum data for analyses, such as spurious geographic information, misidentifications, and incorrect labeling. Museum records have been centralized by open-source repositories with flags for coordinate precision and out-of-range specimens, providing some information about record uncertainty in general. Verification of uncertain museum records could increase confidence in distribution data and improve understanding of biodiversity patterns and range dynamics through time. The goal of this study was to determine if museum records provide unique information about the distribution of the Yellow Lampmussel Lampsilis cariosa (Say, 1817), an at-risk freshwater mussel species. We created a dichotomous key based on a hierarchy of conchological characteristics to verify the taxonomic identity of flagged L. cariosa specimens and assessed records occurring outside of the species’ expected range as compiled from primary literature. Fifty percent of flagged specimens were confirmed as L. cariosa. Of the invalid records, 56% were misidentifications, mainly of other Lampsilis species. Overall, museum collections (1800s–present) contributed 32 unique watersheds not represented by modern survey records (1980s–present, comprising 92 watersheds) including 13 unexpected watersheds in regions of New York and Vermont (USA) and Québec and Ontario (Canada). Our study provides a reproducible method for the reverification of freshwater mussel museum records and highlights how these records can provide unique contributions to our understanding of the geographic range of a rare, at-risk mussel species.
","language":"English","publisher":"The University of Chicago Press","doi":"10.1086/738615","usgsCitation":"Fedarick, J., Murphy, C.A., Record, S., and Roy, A.H., 2025, Museum records provide unique information about the distribution of the Yellow Lampmussel Lampsilis cariosa (Unionidae): Freshwater Science, v. 44, no. 4, p. 434-442, https://doi.org/10.1086/738615.","productDescription":"9 p.","startPage":"434","endPage":"442","ipdsId":"IP-174004","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":497501,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"New York, Vermont","otherGeospatial":"Ontario, Quebec","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -90.15950260000896,\n 56.462837792190584\n ],\n [\n -95.77691469485542,\n 49.71284520828655\n ],\n [\n -85.11013420152203,\n 46.85470065182994\n ],\n [\n -81.95949958747218,\n 44.63027898467527\n ],\n [\n -79.51850001152886,\n 42.05772807401594\n ],\n [\n -73.39821683387511,\n 41.96978452451617\n ],\n [\n -72.36699219294661,\n 42.840968406530905\n ],\n [\n -71.94060238105281,\n 45.20492109068548\n ],\n [\n -64.41091936819154,\n 50.95131087236287\n ],\n [\n -72.30757566485309,\n 56.462837792190584\n ],\n [\n -90.15950260000896,\n 56.462837792190584\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"44","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Fedarick, Jillian","contributorId":363950,"corporation":false,"usgs":false,"family":"Fedarick","given":"Jillian","affiliations":[],"preferred":false,"id":952246,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murphy, Christina Amy 0000-0002-3467-6610","orcid":"https://orcid.org/0000-0002-3467-6610","contributorId":335232,"corporation":false,"usgs":true,"family":"Murphy","given":"Christina","email":"","middleInitial":"Amy","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":952247,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Record, Sydne 0000-0001-7293-2155","orcid":"https://orcid.org/0000-0001-7293-2155","contributorId":353707,"corporation":false,"usgs":false,"family":"Record","given":"Sydne","affiliations":[{"id":7063,"text":"University of Maine","active":true,"usgs":false}],"preferred":false,"id":952248,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Roy, Allison H. 0000-0002-8080-2729 aroy@usgs.gov","orcid":"https://orcid.org/0000-0002-8080-2729","contributorId":4240,"corporation":false,"usgs":true,"family":"Roy","given":"Allison","email":"aroy@usgs.gov","middleInitial":"H.","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":true,"id":952249,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70272210,"text":"70272210 - 2025 - Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata","interactions":[],"lastModifiedDate":"2025-11-19T16:30:18.383713","indexId":"70272210","displayToPublicDate":"2025-10-15T10:24:30","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1338,"text":"Coral Reefs","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata","title":"Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata","docAbstract":"Coral reefs near high human population areas suffer from sedimentation and increased turbidity due to coastal development. However, there is limited research on how key species respond to turbidity caused by terrigenous sediment and how this response may change with increased water temperatures. This study investigated the effects of ambient and elevated turbidity (+ 26 NTU) in combination with ambient (27.1 °C) and elevated temperature (+ 4.1 °C; 31.2 °C) on the dominant Hawaiian reef coral Montipora capitata, collected from two Kāneʻohe Bay watersheds with distinct environmental histories. Using intermittent flow respirometry, we found that acute (12 h) exposure to elevated turbidity and temperature impacted algal symbionts (Symbiodinium spp.) but not the coral host, suggesting a potential delayed host physiological response. Corals from south Kāneʻohe Bay, where restricted water circulation and urbanization have degraded water quality, were more sensitive to stressors than those from the less-impacted northern sites, indicating that physiological responses vary by location and may be influenced by watershed conditions. The findings suggest that while short-term turbidity and warming impact Symbiodinium spp. immediately, prolonged exposure may lead to cascading effects on the coral host. Understanding these species-specific and location-dependent responses enhances our ability to guide restoration and conservation efforts for coral ecosystems facing both local (turbidity) and global (warming) stressors.
","language":"English","publisher":"Springer","doi":"10.1007/s00338-025-02752-4","usgsCitation":"Good, A.M., Epps, A., Coberly, M., Rodgers, K.S., Prouty, N.G., Storlazzi, C.D., and Bahr, K.D., 2025, Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata: Coral Reefs, v. 44, p. 2065-2081, https://doi.org/10.1007/s00338-025-02752-4.","productDescription":"17 p.","startPage":"2065","endPage":"2081","ipdsId":"IP-172051","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":496751,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s00338-025-02752-4","text":"Publisher Index Page"},{"id":496646,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kāneʻohe Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -157.8410504477374,\n 21.5215747015302\n ],\n [\n -157.85940646338184,\n 21.495958106947427\n ],\n [\n -157.84288604930185,\n 21.45453507217063\n ],\n [\n -157.78873580315093,\n 21.403701043743894\n ],\n [\n -157.75615387538204,\n 21.416945226485694\n ],\n [\n -157.7497292699065,\n 21.451545325344867\n ],\n [\n -157.8410504477374,\n 21.5215747015302\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"44","noUsgsAuthors":false,"publicationDate":"2025-10-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Good, Alexandra M.","contributorId":362412,"corporation":false,"usgs":false,"family":"Good","given":"Alexandra","middleInitial":"M.","affiliations":[{"id":36313,"text":"Texas A&M","active":true,"usgs":false}],"preferred":false,"id":950449,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Epps, Ashleigh","contributorId":362413,"corporation":false,"usgs":false,"family":"Epps","given":"Ashleigh","affiliations":[{"id":36313,"text":"Texas A&M","active":true,"usgs":false}],"preferred":false,"id":950450,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coberly, Maile","contributorId":362414,"corporation":false,"usgs":false,"family":"Coberly","given":"Maile","affiliations":[{"id":36402,"text":"University of Hawaii","active":true,"usgs":false}],"preferred":false,"id":950451,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rodgers, Kuʻulei S","contributorId":362415,"corporation":false,"usgs":false,"family":"Rodgers","given":"Kuʻulei","middleInitial":"S","affiliations":[{"id":36402,"text":"University of Hawaii","active":true,"usgs":false}],"preferred":false,"id":950452,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Prouty, Nancy G. 0000-0002-8922-0688 nprouty@usgs.gov","orcid":"https://orcid.org/0000-0002-8922-0688","contributorId":3350,"corporation":false,"usgs":true,"family":"Prouty","given":"Nancy","email":"nprouty@usgs.gov","middleInitial":"G.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":950453,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Storlazzi, Curt D. 0000-0001-8057-4490","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":213610,"corporation":false,"usgs":true,"family":"Storlazzi","given":"Curt","middleInitial":"D.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":950454,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bahr, Keisha D.","contributorId":362417,"corporation":false,"usgs":false,"family":"Bahr","given":"Keisha","middleInitial":"D.","affiliations":[{"id":36313,"text":"Texas A&M","active":true,"usgs":false}],"preferred":false,"id":950455,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70273154,"text":"70273154 - 2025 - S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms","interactions":[],"lastModifiedDate":"2025-12-17T15:34:53.813397","indexId":"70273154","displayToPublicDate":"2025-10-15T09:22:52","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"displayTitle":"S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms","title":"S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms","docAbstract":"Distributed acoustic sensing (DAS), which transforms a fiber optic cable into an array of high frequency strainmeters, has the potential to help us characterize earthquakes with a dense sampling of measurements. While earthquake focal mechanisms are frequently determined using P-wave polarities and S/P amplitude ratios with inertial seismometers, the dense sampling of DAS over potentially large portions of the focal sphere can aid our solutions. Here, we consider ∼200 regional earthquakes and thousands of S/P measurements on a DAS cable colocated with a network of inertial seismometers near Arcata, California. We demonstrate the S/P ratio measurements made on DAS are similar to those made on the inertial seismometers and can be used to constrain focal mechanism solutions.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2025GL116373","usgsCitation":"Skoumal, R.J., Atterholt, J.W., Barbour, A.J., and Hardebeck, J.L., 2025, S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms: Geophysical Research Letters, v. 52, no. 20, e2025GL116373, 8 p., https://doi.org/10.1029/2025GL116373.","productDescription":"e2025GL116373, 8 p.","ipdsId":"IP-177935","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":78686,"text":"Geologic Hazards Science Center - Seismology / Geomagnetism","active":true,"usgs":true}],"links":[{"id":497737,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2025gl116373","text":"Publisher Index Page"},{"id":497635,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -125,\n 42\n ],\n [\n -125,\n 40\n ],\n [\n -123,\n 40\n ],\n [\n -123,\n 42\n ],\n [\n -125,\n 42\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"52","issue":"20","noUsgsAuthors":false,"publicationDate":"2025-10-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Skoumal, Robert J. 0000-0002-5627-6239 rskoumal@usgs.gov","orcid":"https://orcid.org/0000-0002-5627-6239","contributorId":191213,"corporation":false,"usgs":true,"family":"Skoumal","given":"Robert","email":"rskoumal@usgs.gov","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":952469,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atterholt, James William 0000-0003-1603-5518","orcid":"https://orcid.org/0000-0003-1603-5518","contributorId":361969,"corporation":false,"usgs":true,"family":"Atterholt","given":"James","middleInitial":"William","affiliations":[{"id":78686,"text":"Geologic Hazards Science Center - Seismology / Geomagnetism","active":true,"usgs":true}],"preferred":true,"id":952470,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Barbour, Andrew J. 0000-0002-6890-2452","orcid":"https://orcid.org/0000-0002-6890-2452","contributorId":215339,"corporation":false,"usgs":true,"family":"Barbour","given":"Andrew","middleInitial":"J.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":952471,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hardebeck, Jeanne L. 0000-0002-6737-7780","orcid":"https://orcid.org/0000-0002-6737-7780","contributorId":254964,"corporation":false,"usgs":true,"family":"Hardebeck","given":"Jeanne","email":"","middleInitial":"L.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":952472,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70272172,"text":"70272172 - 2025 - Re-oligotrophy in the Upper Mississippi River, USA, occurred in just a few years","interactions":[],"lastModifiedDate":"2025-12-15T16:40:30.851106","indexId":"70272172","displayToPublicDate":"2025-10-15T09:08:07","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1699,"text":"Freshwater Science","active":true,"publicationSubtype":{"id":10}},"title":"Re-oligotrophy in the Upper Mississippi River, USA, occurred in just a few years","docAbstract":"Ecological systems can undergo large changes and regime shifts that are either catastrophic, neutral, or desirable. Rivers worldwide have recently undergone desirable regime shifts related to re-oligotrophy, which is a notable and ongoing reduction in concentrations of total suspended solids (TSS), total N, total P, or phytoplankton. For example, the Upper Mississippi River, USA, has experienced major water-quality changes in multiple river reaches in recent decades. In this study, we sought to understand the timing and magnitude of re-oligotrophy in the Mississippi River over a 20-y period. We used 2 topological data analysis algorithms to address hypotheses related to the following questions: What were the order and timing of water-quality changes? What was the time period over which the major changes occurred? What was the magnitude of water-quality change before and after change points (i.e., specific years when water-quality conditions transitioned abruptly to new states)? We examined 6 water-quality state variables that defined the ecological regime for the Upper Mississippi River. In one river reach, we found that strong reductions in phytoplankton/chlorophyll a had occurred first (2008), followed by total P (2013), and last in TSS (2014). In a downriver reach, we found notable reductions for chlorophyll a (2007) but substantial increases in TSS (2013). In both reaches, the water-quality changes trended over ≥15 y, but the largest changes and a likely regime shift occurred in just 6 y. The timing (2007–2014) and range (~6 y) of water-quality changes were similar between the 2 river reaches, but the directionality of the regime shift indicated re-oligotrophy for the upstream reach and water-quality degradation for the downstream reach. Topological methods applied to long-term datasets can aid our understanding of re-oligotrophication and degradation processes and may help resource managers restore desirable regimes.
","language":"English","publisher":"University of Chicago Press","doi":"10.1086/738457","usgsCitation":"Davis, K., Bungula, W., and Larson, D.M., 2025, Re-oligotrophy in the Upper Mississippi River, USA, occurred in just a few years: Freshwater Science, v. 44, no. 4, p. 409-421, https://doi.org/10.1086/738457.","productDescription":"13 p.","startPage":"409","endPage":"421","ipdsId":"IP-158399","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":496580,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"44","issue":"4","noUsgsAuthors":false,"publicationDate":"2025-10-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Davis, Killian","contributorId":315371,"corporation":false,"usgs":false,"family":"Davis","given":"Killian","email":"","affiliations":[{"id":68293,"text":"University of Wisconsin La Crosse","active":true,"usgs":false}],"preferred":false,"id":950301,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bungula, Wako","contributorId":315367,"corporation":false,"usgs":false,"family":"Bungula","given":"Wako","email":"","affiliations":[{"id":68293,"text":"University of Wisconsin La Crosse","active":true,"usgs":false}],"preferred":false,"id":950302,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Larson, Danelle M. 0000-0001-6349-6267","orcid":"https://orcid.org/0000-0001-6349-6267","contributorId":228838,"corporation":false,"usgs":true,"family":"Larson","given":"Danelle","email":"","middleInitial":"M.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950303,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70272724,"text":"70272724 - 2025 - Variation in detection distance of Eastern Black Rail (Laterallus jamaicensis jamaicensis) vocalizations by autonomous recording units","interactions":[],"lastModifiedDate":"2025-12-05T14:54:18.218207","indexId":"70272724","displayToPublicDate":"2025-10-15T08:50:27","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Variation in detection distance of Eastern Black Rail (Laterallus jamaicensis jamaicensis) vocalizations by autonomous recording units","title":"Variation in detection distance of Eastern Black Rail (Laterallus jamaicensis jamaicensis) vocalizations by autonomous recording units","docAbstract":"Autonomous recording units (ARUs) are an emerging technology that allows for passive monitoring of soniferous animals and soundscapes. Over the past decade, ARUs have become a popular tool for monitoring birds for their potential to reduce the labor and costs of traditional in-person sampling procedures. However, uncertainty surrounding factors affecting detection of avian taxa using ARUs can inhibit their monitoring efficacy. Eastern Black Rails (Laterallus jamaicensis jamaicensis) are a secretive marsh bird listed as a federally threatened species in the U.S.A. Eastern Black Rail vocalizations are difficult to detect by field personnel, and numerous in-person surveys can be required to confirm their presence at a site. While ARUs are an alternative for detecting Eastern Black Rails, it is unknown at what maximum distance an ARU can detect their vocalizations. We evaluated factors affecting the detection distance of simulated vocalizations for ARUs in four marsh vegetation types under a range of environmental conditions. Detection distances varied across models, vocalization and vegetation types, and call volume. Kickeedo vocalizations were detected at greater distances, and detection distances increased for all vocalization types in open vegetation. High relative humidity increased detection distances, while louder background noise decreased detection distances. High wind speeds in cordgrass (Spartina spp.) decreased detection probability disproportionately relative to other vegetation types. Based on these results, considerations of survey area, vegetation type, and site condition can allow land managers and researchers to optimize Eastern Black Rail monitoring using ARUs. Given the substantial staff time needed to monitor this species, ARUs may increase the likelihood of detection and provide an efficient alternative to in-person monitoring.
","language":"English","publisher":"The Waterbird Society","doi":"10.1675/063.048.0206","usgsCitation":"Lamb, B.D., Levy, H.E., Beilke, E.A., Kross, C.S., Kappes, P.J., Sukiennik, M.J., Cox, J.A., Wilson, J.K., Woodrow, J.O., Butler, M.J., Zenzal, T.J., Fournier, A.M., and Woodrey, M.S., 2025, Variation in detection distance of Eastern Black Rail (Laterallus jamaicensis jamaicensis) vocalizations by autonomous recording units: Waterbirds, v. 48, no. 2, p. 1-12, https://doi.org/10.1675/063.048.0206.","productDescription":"12 p.","startPage":"1","endPage":"12","ipdsId":"IP-178264","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":497136,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Lamb, Blake D.","contributorId":363290,"corporation":false,"usgs":false,"family":"Lamb","given":"Blake","middleInitial":"D.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":951441,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Levy, Heather E.","contributorId":363291,"corporation":false,"usgs":false,"family":"Levy","given":"Heather","middleInitial":"E.","affiliations":[{"id":33355,"text":"Tall Timbers Research Station and Land Conservancy","active":true,"usgs":false}],"preferred":false,"id":951442,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Beilke, Elizabeth A.","contributorId":363293,"corporation":false,"usgs":false,"family":"Beilke","given":"Elizabeth","middleInitial":"A.","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":951443,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kross, Chelsea S.","contributorId":363295,"corporation":false,"usgs":false,"family":"Kross","given":"Chelsea","middleInitial":"S.","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":951444,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kappes, Peter J.","contributorId":363297,"corporation":false,"usgs":false,"family":"Kappes","given":"Peter","middleInitial":"J.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":951445,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sukiennik, Matt J.","contributorId":363299,"corporation":false,"usgs":false,"family":"Sukiennik","given":"Matt","middleInitial":"J.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":951446,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Cox, James A.","contributorId":363301,"corporation":false,"usgs":false,"family":"Cox","given":"James","middleInitial":"A.","affiliations":[{"id":33355,"text":"Tall Timbers Research Station and Land Conservancy","active":true,"usgs":false}],"preferred":false,"id":951447,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wilson, Jennifer K.","contributorId":363303,"corporation":false,"usgs":false,"family":"Wilson","given":"Jennifer","middleInitial":"K.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":951448,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Woodrow, Jarrett O.","contributorId":363305,"corporation":false,"usgs":false,"family":"Woodrow","given":"Jarrett","middleInitial":"O.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":951449,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Butler, Matthew J.","contributorId":363307,"corporation":false,"usgs":false,"family":"Butler","given":"Matthew","middleInitial":"J.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":951450,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Zenzal, Theodore J. Jr. 0000-0001-7342-1373","orcid":"https://orcid.org/0000-0001-7342-1373","contributorId":224399,"corporation":false,"usgs":true,"family":"Zenzal","given":"Theodore","suffix":"Jr.","email":"","middleInitial":"J.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":951451,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Fournier, Auriel M.V.","contributorId":363311,"corporation":false,"usgs":false,"family":"Fournier","given":"Auriel","middleInitial":"M.V.","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":951452,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Woodrey, Mark S.","contributorId":363313,"corporation":false,"usgs":false,"family":"Woodrey","given":"Mark","middleInitial":"S.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":951453,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}} ,{"id":70272114,"text":"70272114 - 2025 - Lake depth and light conditions alter Mysis vertical distributions","interactions":[],"lastModifiedDate":"2025-12-16T14:29:20.471012","indexId":"70272114","displayToPublicDate":"2025-10-15T07:50:33","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Lake depth and light conditions alter Mysis vertical distributions","title":"Lake depth and light conditions alter Mysis vertical distributions","docAbstract":"Light regulates the vertical migration of many aquatic organisms. Mysis species couple pelagic and benthic habitats in lakes by diel vertical migrations (DVM), transporting energy and nutrients through the water column and food web. Although Mysis are generally assumed to remain on the bottom during the day, some have been observed in the pelagic zone during the day, indicating incomplete benthic-pelagic coupling in some systems. The degree to which light attenuation and lake depth interact to affect occurrence of mysids within the water column during the day is understudied. We used standardized Mysis net sampling in summers 2020 and 2021 across nine north-temperate lakes to test the hypotheses that 1) Mysis remain pelagic during the day at depths with sufficiently low light levels, and 2) pelagic-caught individuals during the day are, on average, smaller than those caught at night. To test these hypotheses, we assessed light, dissolved oxygen (DO), Mysis densities, and size distribution between night and day across bathymetric depths. In deep lakes and darkly colored shallow lakes, Mysis suspended in the water column during the day where light levels decreased to their light avoidance threshold (∼10-5 to 10-6 lx). Mysis suspended in the water column during the day were smaller than those collected at night. Further, Mysis were not captured when DO reached levels < 3 mg/L, regardless of light conditions. Our results suggest that benthic-pelagic coupling by Mysis is mediated through light conditions, lake morphometry, and DO conditions, and may include some degree of size-dependent behavior.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jglr.2025.102684","usgsCitation":"Chapina, R.J., O’Malley, B., Bowen, K.L., Viljanen, M.L., Bess, Z.A., Yule, D.L., Nejstgaard, J.C., Berger, S.A., Rennie, M.D., Paterson, M.J., Pothoven, S.A., Watkins, J.M., Rudstam, L.G., Chandra, S., and Stockwell, J.D., 2025, Lake depth and light conditions alter Mysis vertical distributions: Journal of Great Lakes Research, v. 51, no. 6, 102684, 8 p., https://doi.org/10.1016/j.jglr.2025.102684.","productDescription":"102684, 8 p.","ipdsId":"IP-165511","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":496720,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jglr.2025.102684","text":"Publisher Index Page"},{"id":496534,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Chapina, Rosaura J.","contributorId":362156,"corporation":false,"usgs":false,"family":"Chapina","given":"Rosaura","middleInitial":"J.","affiliations":[{"id":86482,"text":"Univ. of Vermont","active":true,"usgs":false}],"preferred":false,"id":950115,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Malley, Brian 0000-0001-5035-3080 bomalley@usgs.gov","orcid":"https://orcid.org/0000-0001-5035-3080","contributorId":216560,"corporation":false,"usgs":true,"family":"O’Malley","given":"Brian","email":"bomalley@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":950116,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bowen, Kelly L.","contributorId":38382,"corporation":false,"usgs":false,"family":"Bowen","given":"Kelly","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":950117,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Viljanen, Martta L.M.","contributorId":362157,"corporation":false,"usgs":false,"family":"Viljanen","given":"Martta","middleInitial":"L.M.","affiliations":[{"id":39348,"text":"Norwegian University of Science and Technology","active":true,"usgs":false}],"preferred":false,"id":950118,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bess, Zachary A.","contributorId":362158,"corporation":false,"usgs":false,"family":"Bess","given":"Zachary","middleInitial":"A.","affiliations":[{"id":37455,"text":"University of Nevada","active":true,"usgs":false}],"preferred":false,"id":950119,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yule, Daniel L. 0000-0002-0117-5115","orcid":"https://orcid.org/0000-0002-0117-5115","contributorId":248693,"corporation":false,"usgs":true,"family":"Yule","given":"Daniel","middleInitial":"L.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":950120,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Nejstgaard, Jens C. 0000-0003-1236-0647","orcid":"https://orcid.org/0000-0003-1236-0647","contributorId":261756,"corporation":false,"usgs":false,"family":"Nejstgaard","given":"Jens","email":"","middleInitial":"C.","affiliations":[{"id":52993,"text":"Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB)","active":true,"usgs":false}],"preferred":false,"id":950121,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Berger, Stella A. 0000-0002-8835-545X","orcid":"https://orcid.org/0000-0002-8835-545X","contributorId":244069,"corporation":false,"usgs":false,"family":"Berger","given":"Stella","email":"","middleInitial":"A.","affiliations":[{"id":38332,"text":"Leibniz-Institute of Freshwater Ecology and Inland Fisheries","active":true,"usgs":false}],"preferred":false,"id":950122,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Rennie, Michael D.","contributorId":362159,"corporation":false,"usgs":false,"family":"Rennie","given":"Michael","middleInitial":"D.","affiliations":[{"id":35506,"text":"Lakehead University","active":true,"usgs":false}],"preferred":false,"id":950123,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Paterson, Michael J.","contributorId":362160,"corporation":false,"usgs":false,"family":"Paterson","given":"Michael","middleInitial":"J.","affiliations":[{"id":86485,"text":"IISD Experimental Lakes","active":true,"usgs":false}],"preferred":false,"id":950124,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Pothoven, Steven A.","contributorId":362161,"corporation":false,"usgs":false,"family":"Pothoven","given":"Steven","middleInitial":"A.","affiliations":[{"id":36803,"text":"NOAA","active":true,"usgs":false}],"preferred":false,"id":950125,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Watkins, James M.","contributorId":189286,"corporation":false,"usgs":false,"family":"Watkins","given":"James","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":950126,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Rudstam, Lars G.","contributorId":362162,"corporation":false,"usgs":false,"family":"Rudstam","given":"Lars","middleInitial":"G.","affiliations":[{"id":86486,"text":"Cornell Univ","active":true,"usgs":false}],"preferred":false,"id":950127,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Chandra, 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Article"},"seriesTitle":{"id":1466,"text":"Ecology Letters","active":true,"publicationSubtype":{"id":10}},"title":"Beyond habitat: Memory versus environment in shaping animal space use","docAbstract":"For nearly half a century, ecologists have sought to explain animal space use through characteristics of the environment (i.e., habitat). Recent evidence suggests animals also use memory of previous experiences to decide when and where to move. Yet, the relative influence of the two in explaining animal space use has not been resolved. Using six large ungulate species in the Rocky Mountains (USA), we evaluated the performance of a habitat selection model with 16 environmental variables and another with two variables representing previous use (i.e., memory). While memory outperformed the environment for two species and the environment outperformed memory for four species, the influence of memory and the environment was overall comparable. The environment best explained the space use of specialists, while memory best explained species with strong site fidelity. Our work challenges traditional habitat selection theory, showcasing that animals build their spatial preferences through experience just as much as merely responding to their environment.
","language":"English","publisher":"Wiley","doi":"10.1111/ele.70233","usgsCitation":"Verzuh, T.L., Monteith, K.L., LaSharr, T.N., Wallace, C.F., Smiley, R.A., Wagler, B.L., Geremia, C., Huggler, K.S., Sawyer, H., Kauffman, M.J., and Merkle, J.A., 2025, Beyond habitat: Memory versus environment in shaping animal space use: Ecology Letters, v. 28, no. 10, e70233, 11 p., https://doi.org/10.1111/ele.70233.","productDescription":"e70233, 11 p.","ipdsId":"IP-181117","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":502033,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.05540796433237,\n 45.04359637572361\n ],\n [\n -111.05540796433237,\n 41.065797431121325\n ],\n [\n -104.08177351356116,\n 41.065797431121325\n ],\n [\n -104.08177351356116,\n 45.04359637572361\n ],\n [\n -111.05540796433237,\n 45.04359637572361\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"28","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-10-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Verzuh, Tana L.","contributorId":369047,"corporation":false,"usgs":false,"family":"Verzuh","given":"Tana","middleInitial":"L.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958356,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Monteith, Kevin L.","contributorId":369048,"corporation":false,"usgs":false,"family":"Monteith","given":"Kevin","middleInitial":"L.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958357,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"LaSharr, Tayler N.","contributorId":369049,"corporation":false,"usgs":false,"family":"LaSharr","given":"Tayler","middleInitial":"N.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958358,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wallace, Cody F.","contributorId":369050,"corporation":false,"usgs":false,"family":"Wallace","given":"Cody","middleInitial":"F.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958359,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smiley, Rachel A.","contributorId":369051,"corporation":false,"usgs":false,"family":"Smiley","given":"Rachel","middleInitial":"A.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958360,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wagler, Brittany L.","contributorId":369052,"corporation":false,"usgs":false,"family":"Wagler","given":"Brittany","middleInitial":"L.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958361,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Geremia, Chris","contributorId":362841,"corporation":false,"usgs":false,"family":"Geremia","given":"Chris","affiliations":[],"preferred":false,"id":958362,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Huggler, Katey S.","contributorId":369053,"corporation":false,"usgs":false,"family":"Huggler","given":"Katey","middleInitial":"S.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958363,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Sawyer, Hall","contributorId":337577,"corporation":false,"usgs":false,"family":"Sawyer","given":"Hall","affiliations":[{"id":51998,"text":"Western EcoSystems Technology","active":true,"usgs":false}],"preferred":false,"id":958364,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Kauffman, Matthew J. 0000-0003-0127-3900","orcid":"https://orcid.org/0000-0003-0127-3900","contributorId":202921,"corporation":false,"usgs":true,"family":"Kauffman","given":"Matthew","middleInitial":"J.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":958365,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Merkle, Jerod A.","contributorId":369054,"corporation":false,"usgs":false,"family":"Merkle","given":"Jerod","middleInitial":"A.","affiliations":[{"id":36628,"text":"University of Wyoming","active":true,"usgs":false}],"preferred":false,"id":958366,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70273317,"text":"70273317 - 2025 - Summer roost site suitability analyses for 4 special status bat species in the Eastern United States","interactions":[],"lastModifiedDate":"2026-01-06T14:41:32.178329","indexId":"70273317","displayToPublicDate":"2025-10-14T08:37:42","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Summer roost site suitability analyses for 4 special status bat species in the Eastern United States","docAbstract":"Data describing habitat suitability are crucial for implementing effective conservation planning but are often lacking at regional and continental scales. We address this gap for 4 bat species that are listed, proposed for listing, or under Endangered Species Act listing review by highlighting a framework for estimating summer roost suitability with a presence-background approach to aid development of conservation policy and management plans. The 4 species of concern are the Little Brown Bat (Myotis lucifugus), the Northern Long-eared Bat (M. septentrionalis), the Indiana Bat (M. sodalis), and the Tricolored Bat (Perimyotis subflavus). Our estimates of summer roost suitability were developed for the eastern United States at a fine spatial resolution (250 m pixels) suitable for conservation planning across multiple scales. Summer roost habitat suitability was higher in areas with higher tree canopy cover for each of these species, though subtle differences were observed between the species that often use buildings (e.g., Little Brown Bat), tree crevices, cavities, and elements of dead or dying trees (e.g., Northern Long-eared Bat and Indiana Bat), and foliage (e.g., Tricolored Bat). To this end, roost suitability was not identical among species, and each showed subtly different relationships to the environmental covariates considered here. We also use a novel approach, gradient surface metrics, to quantify differences in the spatial pattern of summer roost suitability among the 4 species and found that tricolored bats and northern long-eared bats showed the most homogeneous and spatially smooth habitat suitability surfaces. Estimates of summer roost suitability developed here were also used to identify areas of good summer habitat where our models showed the least uncertainty that may be beneficial for targeted conservation, such as limiting disturbance to potential roost habitat. We also identified areas where additional data would benefit future summer roost modeling efforts. This work provides a first step toward developing multistate inventories of summer roost habitat suitable for implementing effective conservation planning at multiple scales.
","language":"English","publisher":"Oxford Academic","doi":"10.1093/jmammal/gyaf057","usgsCitation":"Inman, R.D., Schuhmann, A.N., Sawyer, S., Gaulke, S.M., Tousley, F.C., Davis, H.T., Udell, B.J., Straw, B., Reichard, J.D., and Reichert, B., 2025, Summer roost site suitability analyses for 4 special status bat species in the Eastern United States: Journal of Mammalogy, v. 106, no. 6, p. 1399-1411, https://doi.org/10.1093/jmammal/gyaf057.","productDescription":"13 p.","startPage":"1399","endPage":"1411","ipdsId":"IP-165519","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":498339,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"106","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-10-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Inman, Richard D. 0000-0002-1982-7791 rdinman@usgs.gov","orcid":"https://orcid.org/0000-0002-1982-7791","contributorId":187754,"corporation":false,"usgs":true,"family":"Inman","given":"Richard","email":"rdinman@usgs.gov","middleInitial":"D.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":953313,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schuhmann, Andrea Nichole 0009-0005-8244-4303","orcid":"https://orcid.org/0009-0005-8244-4303","contributorId":329059,"corporation":false,"usgs":true,"family":"Schuhmann","given":"Andrea","email":"","middleInitial":"Nichole","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953314,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sawyer, Sarah","contributorId":210922,"corporation":false,"usgs":false,"family":"Sawyer","given":"Sarah","email":"","affiliations":[{"id":36400,"text":"US Forest Service","active":true,"usgs":false}],"preferred":false,"id":953315,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gaulke, Sarah Mccrimmon 0000-0002-2657-5844","orcid":"https://orcid.org/0000-0002-2657-5844","contributorId":225564,"corporation":false,"usgs":true,"family":"Gaulke","given":"Sarah","email":"","middleInitial":"Mccrimmon","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":953316,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tousley, Frank Charles 0000-0002-6859-7558","orcid":"https://orcid.org/0000-0002-6859-7558","contributorId":304216,"corporation":false,"usgs":true,"family":"Tousley","given":"Frank","middleInitial":"Charles","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953317,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Davis, Helen Trice 0000-0001-5449-4331","orcid":"https://orcid.org/0000-0001-5449-4331","contributorId":336752,"corporation":false,"usgs":true,"family":"Davis","given":"Helen","middleInitial":"Trice","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953318,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Udell, Bradley James 0000-0001-5225-4959","orcid":"https://orcid.org/0000-0001-5225-4959","contributorId":271174,"corporation":false,"usgs":true,"family":"Udell","given":"Bradley","email":"","middleInitial":"James","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953319,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Straw, Bethany R. 0000-0001-9086-4600","orcid":"https://orcid.org/0000-0001-9086-4600","contributorId":271020,"corporation":false,"usgs":true,"family":"Straw","given":"Bethany","middleInitial":"R.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953320,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Reichard, Jonathan D. 0000-0002-4792-2868","orcid":"https://orcid.org/0000-0002-4792-2868","contributorId":337073,"corporation":false,"usgs":false,"family":"Reichard","given":"Jonathan","email":"","middleInitial":"D.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":953321,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Reichert, Brian E. 0000-0002-9640-0695","orcid":"https://orcid.org/0000-0002-9640-0695","contributorId":204260,"corporation":false,"usgs":true,"family":"Reichert","given":"Brian","middleInitial":"E.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":953322,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70272626,"text":"70272626 - 2025 - Evaluating effectiveness of flocculation and wave-reduction barriers for restoration of a turbid, terminal lake","interactions":[],"lastModifiedDate":"2025-11-26T14:42:28.421722","indexId":"70272626","displayToPublicDate":"2025-10-14T08:36:51","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3751,"text":"Wetlands Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Evaluating effectiveness of flocculation and wave-reduction barriers for restoration of a turbid, terminal lake","docAbstract":"Malheur Lake is a freshwater, shallow lake that provides key habitat for birds along the Pacific Flyway in North America. The lake shifted to a turbid state in the 1990s with suspended-sediment concentrations sometimes exceeding 1000 mg/L and minimal light available in the water column for submerged aquatic vegetation. Resource managers intend to enhance bird habitat quality by restoring the lake to a clear, vegetated state. Ten mesocosms were installed to experimentally test the effects of wave-reduction barriers and flocculation (aluminum sulfate followed by lanthanum-modified bentonite clay) on dependent variables including turbidity, suspended-sediment concentrations, nutrient concentrations, and photosynthetically active radiation. Flocculation additions temporarily decreased turbidity by ≥ 90% and significantly increased photosynthetically active radiation by > 400% through the water column. Orthophosphate concentrations significantly decreased following the first flocculation addition. The clay did not cap the flocculated material, and turbidity increased within a few days from wind-wave action. Wind directions in the middle of the lake were variable, minimizing the effect of wave-reduction barriers on dependent variables. This study showed that the light required for submerged aquatic vegetation can be temporarily attained at the lakebed using flocculation. Future experiments could attempt to prolong the duration of low turbidity by effectively capping the flocculated material. The findings demonstrate the complexity of disrupting shallow lake feedback loops and offer insights for turbid-state lake restoration.
","language":"English","publisher":"Springer Nature","doi":"10.1007/s11273-025-10094-9","usgsCitation":"Smith, C., and Brannan, R., 2025, Evaluating effectiveness of flocculation and wave-reduction barriers for restoration of a turbid, terminal lake: Wetlands Ecology and Management, v. 33, 82, 16 p., https://doi.org/10.1007/s11273-025-10094-9.","productDescription":"82, 16 p.","ipdsId":"IP-177920","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":496937,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s11273-025-10094-9","text":"Publisher Index Page"},{"id":496900,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon","otherGeospatial":"Malheur Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -119,\n 43.4167\n ],\n [\n -119,\n 43.1667\n ],\n [\n -118.5833,\n 43.1667\n ],\n [\n -118.5833,\n 43.4167\n ],\n [\n -119,\n 43.4167\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"33","noUsgsAuthors":false,"publicationDate":"2025-10-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Smith, Cassandra 0000-0003-1088-1772 cassandrasmith@usgs.gov","orcid":"https://orcid.org/0000-0003-1088-1772","contributorId":193491,"corporation":false,"usgs":true,"family":"Smith","given":"Cassandra","email":"cassandrasmith@usgs.gov","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":951022,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brannan, Randy Joe 0009-0001-1622-9251","orcid":"https://orcid.org/0009-0001-1622-9251","contributorId":351630,"corporation":false,"usgs":true,"family":"Brannan","given":"Randy Joe","affiliations":[{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true}],"preferred":true,"id":951023,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70272121,"text":"70272121 - 2025 - A short-term sublethal oral exposure to microcystin-LR disrupts cecal microbiome homeostasis in mallard","interactions":[],"lastModifiedDate":"2025-11-17T15:22:32.817241","indexId":"70272121","displayToPublicDate":"2025-10-14T08:16:09","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":22705,"text":"Frontiers in Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"A short-term sublethal oral exposure to microcystin-LR disrupts cecal microbiome homeostasis in mallard","docAbstract":"Introduction: The frequency of cyanobacterial blooms seems to have increased globally in recent decades due to human induced eutrophication and climate change. Cyanobacterial blooms can produce several groups of toxins, among which microcystin-LR (MC-LR) is one of the most abundant. Effects of MC-LR on avian microbiome have not been studied and studies in laboratory murines have been limited to metabarcoding of prokaryotes.
Methods: Using RNA shotgun sequencing, we compared the richness and composition of metabolically active prokaryotes, expressed virulence factors, antimicrobial resistance genes, metabolic pathways, Gene Ontology terms, enzymes, and proteins in mallards (Anas platyrhynchos) that were orally exposed to a sublethal dose of MC-LR for one week and unexposed birds.
Results: Richness and composition of all compared features did not differ between exposed and control birds and none were differentially expressed between exposure groups. However, richness and/or composition of all features except virulence factors and Carbohydrate Active enzymes had multiple-fold greater dispersion in exposed birds than in controls. This effect was especially pronounced in expressed metabolic (MetaCyc) pathways.
Discussion: Our results suggest that MC-LR exposure had a stochastic (rather than deterministic) effect on cecal microbiota, especially its function. Observed disturbance of the microbiota homeostasis is consistent with the Anna Karenina Principle. This principle has been documented in a wide range of eukaryotes using primarily microbial community metabarcoding. Although stochastic disturbance of microbiota function has been hypothesized, our study seems to be the first to demonstrate this in an experimental study.
","language":"English","publisher":"Frontiers Media","doi":"10.3389/ftox.2025.1634241","usgsCitation":"Drovetski, S.V., Shearn-Bochsler, V.I., Hofmeister, E.K., Karouna-Reiner, N.K., and Dusek, R.J., 2025, A short-term sublethal oral exposure to microcystin-LR disrupts cecal microbiome homeostasis in mallard: Frontiers in Toxicology, v. 7, 1634241, 10 p., https://doi.org/10.3389/ftox.2025.1634241.","productDescription":"1634241, 10 p.","ipdsId":"IP-179504","costCenters":[{"id":50464,"text":"Eastern Ecological Science Center","active":true,"usgs":true}],"links":[{"id":496721,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3389/ftox.2025.1634241","text":"Publisher Index Page"},{"id":496540,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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0000-0002-6360-3912 ehofmeister@usgs.gov","orcid":"https://orcid.org/0000-0002-6360-3912","contributorId":3230,"corporation":false,"usgs":true,"family":"Hofmeister","given":"Erik","email":"ehofmeister@usgs.gov","middleInitial":"K.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":950140,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Karouna-Reiner, Natalie K.","contributorId":84258,"corporation":false,"usgs":true,"family":"Karouna-Reiner","given":"Natalie","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":950141,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dusek, Robert J. 0000-0001-6177-7479 rdusek@usgs.gov","orcid":"https://orcid.org/0000-0001-6177-7479","contributorId":174374,"corporation":false,"usgs":true,"family":"Dusek","given":"Robert","email":"rdusek@usgs.gov","middleInitial":"J.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":950142,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70273772,"text":"70273772 - 2025 - VIPER site analysis","interactions":[],"lastModifiedDate":"2026-01-28T15:34:44.161644","indexId":"70273772","displayToPublicDate":"2025-10-14T08:12:17","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":8607,"text":"The Planetary Science Journal","active":true,"publicationSubtype":{"id":10}},"title":"VIPER site analysis","docAbstract":"We needed to evaluate available orbital data of NASA’s Volatiles Investigating Polar Exploration Rover (VIPER) mission area in order to derive a variety of maps to help the science team identify scientifically interesting places for the rover to visit and to provide scientific context for our mission. Some of these maps also fulfilled engineering and mission design needs to enable safe and efficient landing and roving. We incorporated data from the Lunar Reconnaissance Orbiter Camera, the Lunar Orbital Laser Altimeter, the Mini-RF instrument, the Chandrayaan-2 Orbital High Resolution Camera, the Korean Pathfinder Lunar Orbiter’s Shadowcam, the Kaguya Spectral Profiler and Multiband Imager, and the Chandrayaan-1 Moon Mineralogy Mapper. We used a variety of techniques to build these maps, including stereogrammetry, shape-from-shading, ice stability depth and surface temperature calculations, and the horizon method for solar illumination and direct-to-Earth communications maps. Altogether, these maps allowed us to survey for boulders, evaluate features in permanently shadowed regions that VIPER might explore, provide mineralogic context for what VIPER’s instruments may learn, estimate the ages and radar properties of craters in the VIPER mission area, and evaluate the potential for gravity traverses with the rover. These data and techniques provided a rich set of information from which both the VIPER science team and engineering teams were able to draw in order to plan a safe landing and to plan a VIPER surface mission that will be both scientifically valuable and robust from an operational perspective.
","language":"English","publisher":"American Astronomical Society","doi":"10.3847/PSJ/ae061a","usgsCitation":"Beyer, R.A., Shirley, M., Colaprete, A., Fassett, C.I., Fernando, B., Himani, T.P., Lemelin, M., Martinez-Comacho, J., Siegler, M., Annex, A., Balaban, E., Bickel, V.T., Coyan, J.A., Deutsch, A.N., Heldmann, J.L., Hirabayashi, M., Keszthelyi, L.P., Lewis, K.W., Lim, D.S., and Dobrea, E., 2025, VIPER site analysis: The Planetary Science Journal, v. 6, 236, 18 p., https://doi.org/10.3847/PSJ/ae061a.","productDescription":"236, 18 p.","ipdsId":"IP-180642","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":499324,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3847/psj/ae061a","text":"Publisher Index 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0000-0002-3952-8086","orcid":"https://orcid.org/0000-0002-3952-8086","contributorId":365749,"corporation":false,"usgs":false,"family":"Lemelin","given":"Myriam","affiliations":[{"id":87209,"text":"5D ́epartement de G ́eomatique appliqu ́ee","active":true,"usgs":false}],"preferred":false,"id":954722,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Martinez-Comacho, José 0000-0003-0542-7866","orcid":"https://orcid.org/0000-0003-0542-7866","contributorId":354404,"corporation":false,"usgs":false,"family":"Martinez-Comacho","given":"José","affiliations":[{"id":84624,"text":"University of Hawai’i at Manoa, Hawaii Institute for Geophysics and Planetology, 1680 East-West Road, POST Building, Honolulu, HI 96822","active":true,"usgs":false}],"preferred":false,"id":954723,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Siegler, Matthew 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jcoyan@usgs.gov","orcid":"https://orcid.org/0000-0002-8450-7364","contributorId":197481,"corporation":false,"usgs":true,"family":"Coyan","given":"Joshua","email":"jcoyan@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":954728,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Deutsch, Ariel N. 0000-0001-9831-3619","orcid":"https://orcid.org/0000-0001-9831-3619","contributorId":365753,"corporation":false,"usgs":false,"family":"Deutsch","given":"Ariel","middleInitial":"N.","affiliations":[{"id":87212,"text":"Bay Area Environmental Research Institute, NASA Ames Research Center,","active":true,"usgs":false}],"preferred":false,"id":954729,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Heldmann, Jennifer L. 0000-0003-3397-1682","orcid":"https://orcid.org/0000-0003-3397-1682","contributorId":365754,"corporation":false,"usgs":false,"family":"Heldmann","given":"Jennifer","middleInitial":"L.","affiliations":[{"id":87206,"text":"NASA Ames Research Center,","active":true,"usgs":false}],"preferred":false,"id":954730,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Hirabayashi, Masatoshi 0000-0002-1821-5689","orcid":"https://orcid.org/0000-0002-1821-5689","contributorId":365755,"corporation":false,"usgs":false,"family":"Hirabayashi","given":"Masatoshi","affiliations":[{"id":87213,"text":"Georgia Institute of Technology,","active":true,"usgs":false}],"preferred":false,"id":954731,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Keszthelyi, Laszlo P. 0000-0003-1879-4331 laz@usgs.gov","orcid":"https://orcid.org/0000-0003-1879-4331","contributorId":227,"corporation":false,"usgs":true,"family":"Keszthelyi","given":"Laszlo","email":"laz@usgs.gov","middleInitial":"P.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":954732,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Lewis, Kevin W. 0000-0003-3412-803X","orcid":"https://orcid.org/0000-0003-3412-803X","contributorId":365756,"corporation":false,"usgs":false,"family":"Lewis","given":"Kevin","middleInitial":"W.","affiliations":[{"id":87208,"text":"Dept. of Earth and Planetary Science, Johns Hopkins University,","active":true,"usgs":false}],"preferred":false,"id":954733,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Lim, Darlene S.S.","contributorId":365757,"corporation":false,"usgs":false,"family":"Lim","given":"Darlene","middleInitial":"S.S.","affiliations":[{"id":87206,"text":"NASA Ames Research Center,","active":true,"usgs":false}],"preferred":false,"id":954734,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Dobrea, Eldar Noe","contributorId":365758,"corporation":false,"usgs":false,"family":"Dobrea","given":"Eldar Noe","affiliations":[{"id":87214,"text":"6 Sagan Center at the SETI Institute, NASA Ames Research Center,","active":true,"usgs":false}],"preferred":false,"id":954735,"contributorType":{"id":1,"text":"Authors"},"rank":20}]}} ,{"id":70272690,"text":"70272690 - 2025 - Does tidal marsh restoration lead to the recovery of trophic pathways that support estuarine fishes?","interactions":[],"lastModifiedDate":"2025-12-04T16:09:41.080409","indexId":"70272690","displayToPublicDate":"2025-10-11T10:05:12","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Does tidal marsh restoration lead to the recovery of trophic pathways that support estuarine fishes?","docAbstract":"Evaluation of tidal marsh restoration success is typically based on the recovery of habitat size and target species. However, food-web structure may provide valuable insight into ecosystem functioning trajectories. Here, we studied restored tidal marshes of different ages (new, young, old; spanning 1–150 years) in comparison with nearby reference sites along the San Francisco Estuary. We asked: (1) How does restoration help recover energy pathways that support fishes? (2) Do fishes rely more on algal versus detrital pathways in restored sites?; and (3) How does food-web structure vary as a function of species origin and life history? To answer these questions, we sampled fish (n = 806) and basal resources (emergent vegetation and phytoplankton; n = 109) seasonally over two hydrologically contrasting years. Using stable isotopes (δ13C, δ15N, and δ34S), we calculated fish isotopic niche volumes, food chain lengths, and the relative importance of algal versus detrital energy pathways. We found that food chains in restored sites were 8% shorter than in their paired reference sites. Additionally, the young and old restored sites had 37% smaller niche volumes than their references, but the opposite was true for the new restored site (11% larger), illustrating the characteristic trophic surge of early succession. Fishes found in restored sites relied significantly less on detrital energy (7% less) than fishes found in reference sites, and resident fishes showed 12% higher reliance on the detrital pathway than transient species. Finally, most of the native niche volume overlapped with that of introduced fish, which was in turn 38% larger, and a similar pattern was observed when comparing resident to transient fish. Our findings demonstrate that food-web structure does not immediately recover with tidal marsh restoration, even if fish assemblages are species-rich; and show that transient trophic surges may complicate restoration success assessments of newly restored marshes. We contend that incorporating recovery of energy pathways as an indicator of performance may help strengthen monitoring and design of wetland ecosystem restoration projects.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/eap.70110","usgsCitation":"Pagliaro, M.D., De La Cruz, S.E., Woo, I., Sousa, J., Rich, N., Grimaldo, L., Colombano, D., and Ruhí, A., 2025, Does tidal marsh restoration lead to the recovery of trophic pathways that support estuarine fishes?: Ecological Applications, v. 35, no. 7, e70110, 19 p., https://doi.org/10.1002/eap.70110.","productDescription":"e70110, 19 p.","ipdsId":"IP-172413","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":497112,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/eap.70110","text":"Publisher Index Page"},{"id":497058,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay-Delta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -122.13450674043398,\n 38.15156417948114\n ],\n [\n -122.13450674043398,\n 37.99624365988022\n ],\n [\n -121.70778013191887,\n 37.99624365988022\n ],\n [\n -121.70778013191887,\n 38.15156417948114\n ],\n [\n -122.13450674043398,\n 38.15156417948114\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"35","issue":"7","noUsgsAuthors":false,"publicationDate":"2025-10-11","publicationStatus":"PW","contributors":{"authors":[{"text":"Pagliaro, Megan D.","contributorId":363231,"corporation":false,"usgs":false,"family":"Pagliaro","given":"Megan","middleInitial":"D.","affiliations":[{"id":6609,"text":"UC Berkeley","active":true,"usgs":false}],"preferred":false,"id":951339,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"De La Cruz, Susan E.W. 0000-0001-6315-0864","orcid":"https://orcid.org/0000-0001-6315-0864","contributorId":202774,"corporation":false,"usgs":true,"family":"De La Cruz","given":"Susan","email":"","middleInitial":"E.W.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951340,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Woo, Isa","contributorId":363234,"corporation":false,"usgs":false,"family":"Woo","given":"Isa","affiliations":[{"id":37814,"text":"Former USGS","active":true,"usgs":false}],"preferred":false,"id":951341,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sousa, Jake","contributorId":363235,"corporation":false,"usgs":false,"family":"Sousa","given":"Jake","affiliations":[{"id":80078,"text":"ICF","active":true,"usgs":false}],"preferred":false,"id":951342,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rich, Natalie","contributorId":363238,"corporation":false,"usgs":false,"family":"Rich","given":"Natalie","affiliations":[{"id":6609,"text":"UC Berkeley","active":true,"usgs":false}],"preferred":false,"id":951343,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Grimaldo, Lenny","contributorId":10728,"corporation":false,"usgs":false,"family":"Grimaldo","given":"Lenny","email":"","affiliations":[{"id":35724,"text":"ICF, San Francisco, USA","active":true,"usgs":false}],"preferred":false,"id":951344,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Colombano, Denise","contributorId":297365,"corporation":false,"usgs":false,"family":"Colombano","given":"Denise","affiliations":[],"preferred":false,"id":951345,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Ruhí, Albert","contributorId":363243,"corporation":false,"usgs":false,"family":"Ruhí","given":"Albert","affiliations":[{"id":6609,"text":"UC Berkeley","active":true,"usgs":false}],"preferred":false,"id":951346,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70272446,"text":"70272446 - 2025 - Non-native prey availability and over-compensatory density dependence drive population dynamics of a native fish predator","interactions":[],"lastModifiedDate":"2025-11-21T18:36:50.615069","indexId":"70272446","displayToPublicDate":"2025-10-10T12:29:59","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Non-native prey availability and over-compensatory density dependence drive population dynamics of a native fish predator","docAbstract":"Understanding the factors that regulate population dynamics is crucial for conserving imperiled species. Bull trout (Salvelinus confluentus), a piscivorous salmonid and one of North America's most threatened cold-water species, has declined significantly due to habitat loss, overfishing, invasive species, and climate change. While recovery efforts have primarily targeted these threats, the role of prey availability in influencing bull trout population dynamics under multiple stressors remains poorly understood. Using a stage-based integrated population model, we quantified the effects of non-native prey availability (kokanee; Oncorhynchus nerka), angling pressure, climatic variation, and density-dependent processes on bull trout population dynamics in Lake Koocanusa, a transboundary reservoir and river system (United States and Canada), over a 40-year period (1980–2023). Our results show that bull trout populations are regulated by density-dependent processes, including over-compensation in sub-adult recruitment and reduced adult survival at high densities. Increased kokanee biomass and restricted harvest significantly enhanced bull trout survival and abundance, whereas reduced water availability had a limited negative effect on sub-adult production. Model simulations indicate that as kokanee biomass availability increases, the number of bull trout that can be sustainably harvested also increases. In fact, a modest annual fishery (300 individuals) can be sustained, especially under moderate to high kokanee biomass conditions. These results underscore the importance of prey availability, including non-native species, in supporting bull trout populations. Effective management of threatened apex fish predators like bull trout requires addressing the complex interplay between environmental threats, prey dynamics, and density-dependent mechanisms across all life stages.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/eap.70103","usgsCitation":"Cochrane, M., Cline, T., Schmidt, T.S., Dunnigan, J., Warnock, W., and Muhlfeld, C.C., 2025, Non-native prey availability and over-compensatory density dependence drive population dynamics of a native fish predator: Ecological Applications, v. 35, no. 7, e70103, 16 p., https://doi.org/10.1002/eap.70103.","productDescription":"e70103, 16 p.","ipdsId":"IP-173240","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":496925,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/eap.70103","text":"Publisher Index Page"},{"id":496789,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, Montana","otherGeospatial":"Lake Koocanusa","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -115.41674082695792,\n 49.37701492800039\n ],\n [\n -115.41674082695792,\n 48.769300021930604\n ],\n [\n -115.08255833560938,\n 48.769300021930604\n ],\n [\n -115.08255833560938,\n 49.37701492800039\n ],\n [\n -115.41674082695792,\n 49.37701492800039\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"35","issue":"7","noUsgsAuthors":false,"publicationDate":"2025-10-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Cochrane, Madaline","contributorId":362831,"corporation":false,"usgs":false,"family":"Cochrane","given":"Madaline","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":950747,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cline, Timothy","contributorId":339987,"corporation":false,"usgs":false,"family":"Cline","given":"Timothy","affiliations":[{"id":36555,"text":"Montana State University","active":true,"usgs":false}],"preferred":false,"id":950748,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schmidt, Travis S. 0000-0003-1400-0637 tschmidt@usgs.gov","orcid":"https://orcid.org/0000-0003-1400-0637","contributorId":221742,"corporation":false,"usgs":true,"family":"Schmidt","given":"Travis","email":"tschmidt@usgs.gov","middleInitial":"S.","affiliations":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":685,"text":"Wyoming-Montana Water Science Center","active":false,"usgs":true}],"preferred":true,"id":950749,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dunnigan, James","contributorId":279960,"corporation":false,"usgs":false,"family":"Dunnigan","given":"James","affiliations":[{"id":48633,"text":"MT FWP","active":true,"usgs":false}],"preferred":false,"id":950750,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Warnock, Will","contributorId":362833,"corporation":false,"usgs":false,"family":"Warnock","given":"Will","affiliations":[{"id":83135,"text":"British Columbia Ministry of Water, Land, and Resource Stewardship","active":true,"usgs":false}],"preferred":false,"id":950751,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Muhlfeld, Clint C. 0000-0002-4599-4059 cmuhlfeld@usgs.gov","orcid":"https://orcid.org/0000-0002-4599-4059","contributorId":924,"corporation":false,"usgs":true,"family":"Muhlfeld","given":"Clint","email":"cmuhlfeld@usgs.gov","middleInitial":"C.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true},{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":950752,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70272153,"text":"70272153 - 2025 - Agronomic practices vs. natural soil factors: Influences on nitrous oxide emissions from corn and soybean fields.","interactions":[],"lastModifiedDate":"2025-11-18T15:07:08.728499","indexId":"70272153","displayToPublicDate":"2025-10-09T09:03:23","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":22711,"text":"Agronomy","active":true,"publicationSubtype":{"id":10}},"title":"Agronomic practices vs. natural soil factors: Influences on nitrous oxide emissions from corn and soybean fields.","docAbstract":"Nitrous oxide (N2O), a potent greenhouse gas (GHG) and major contributor to climate change, is primarily released through agricultural activities. To better understand and quantify how land management practices, local climate conditions, and soil physicochemical properties affect these agricultural N2O emissions, we conducted a review of the peer-reviewed literature on N2O emission from corn [Zea mays L.] and soybean [Glycine max (L.) Merr.] fields. We evaluated the seasonal, cumulative effects of three nitrogen fertilizer rates—no fertilizer (0), low (<188 kg N ha−1), and high (188–400 kg N ha−1)—tillage practices, local climate (precipitation and temperature), soil texture, and soil pH on soil N2O emissions. This meta-analysis included 77 articles for corn and 22 articles for soybean fields. Average N2O emissions during the corn rotation were 2.34 and 2.45 kg N2O-N ha−1 season−1 under low and high N fertilizer rates, respectively, and were both substantially (p < 0.0001) greater than those of non-fertilized corn fields (0.91 kg N2O-N ha−1 season−1). Non-fertilized soybean fields showed seasonal N2O emissions of 0.74 kg N2O-N ha−1, while low fertilizer application triggered a sharp increase (1.87 kg N2O-N ha−1) in N2O emissions by roughly 2.5 times (p < 0.028). Increased temperature did not significantly (p > 0.05) affect the emission of N2O from fertilized or non-fertilized corn fields. Regardless of fertilization and tillage practices, our analysis, including Principal Component Analysis, revealed that in corn fields, precipitation and soil pH are the dominant factors influencing soil N2O emissions. This study uniquely quantifies the influence of climate–soil factors, such as precipitation and soil pH, alongside agronomic practices, on N2O emissions, offering new insights beyond previous reviews focused primarily on fertilizer rates or tillage effects.
","language":"English","publisher":"MDPI","doi":"10.3390/agronomy15102358","usgsCitation":"Ansari, J., Davis, M., Li, C., and Bansal, S., 2025, Agronomic practices vs. natural soil factors: Influences on nitrous oxide emissions from corn and soybean fields.: Agronomy, v. 15, no. 10, 2358, 25 p., https://doi.org/10.3390/agronomy15102358.","productDescription":"2358, 25 p.","ipdsId":"IP-158134","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":496729,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3390/agronomy15102358","text":"Publisher Index Page"},{"id":496578,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-10-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Ansari, Jamshid","contributorId":362260,"corporation":false,"usgs":false,"family":"Ansari","given":"Jamshid","affiliations":[],"preferred":false,"id":950253,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Davis, Morgan","contributorId":362261,"corporation":false,"usgs":false,"family":"Davis","given":"Morgan","affiliations":[],"preferred":false,"id":950254,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Li, Chenhui","contributorId":362262,"corporation":false,"usgs":false,"family":"Li","given":"Chenhui","affiliations":[],"preferred":false,"id":950255,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bansal, Sheel 0000-0003-1233-1707 sbansal@usgs.gov","orcid":"https://orcid.org/0000-0003-1233-1707","contributorId":167295,"corporation":false,"usgs":true,"family":"Bansal","given":"Sheel","email":"sbansal@usgs.gov","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":950256,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70272219,"text":"70272219 - 2025 - Sapsucker wells as a keystone nutritional resource: Evaluating methods for detection of secondary sap consumers","interactions":[],"lastModifiedDate":"2025-11-19T16:03:43.592705","indexId":"70272219","displayToPublicDate":"2025-10-09T08:59:01","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1467,"text":"Ecology and Evolution","active":true,"publicationSubtype":{"id":10}},"title":"Sapsucker wells as a keystone nutritional resource: Evaluating methods for detection of secondary sap consumers","docAbstract":"North American sapsuckers are considered double keystone species because they (1) excavate nest cavities that are used by other birds, small mammals, and invertebrates, and (2) create and maintain sap wells, a temporary nutritional resource available to a variety of secondary consumers. Most previous reports of secondary sap consumption relied on human observers and were based on either brief or incidental observations. However, modern technology can greatly enhance observational techniques and provide additional insights into the functional, community-level importance of sap wells. We used visual surveys, camera traps, and environmental DNA (eDNA) to identify secondary consumers of sap from wells created by red-naped (Sphyrapicus nuchalis) and Williamson's (S. thyroideus) sapsuckers among three functional groups of shrubs and trees in south-central Colorado: shrub willows (Salix spp.), Rocky Mountain maple (Acer glabrum), and conifer trees (Pinopsida). Camera traps and eDNA revealed additional sap-well visitors not identified from direct observations. Camera traps were effective for detecting nocturnal sap-well visitors such as small rodents as well as occasional diurnal visitors. Environmental DNA analyses corroborated findings from other methods and identified four additional taxa as possible sap consumers. The physiology of sap-well visitors, such as the ability to taste and assimilate compounds within sap, may aid in determining consumption versus contact when evaluating the results of eDNA analyses. Total vertebrate taxa detected using all 3 methods included 17 bird taxa in 10 families within 3 orders and 8 mammal taxa in 6 families within 4 orders. Shrub-willow sap wells attracted the most diverse vertebrate taxa (23), followed by Rocky Mountain maple (13) and conifer trees (10). Invertebrates in 13 families within 3 orders were observed feeding from sap wells during visual surveys. Because many secondary sap consumers perform ecological services such as pollination, seed dispersal, and pest control, the methods described here may aid in elucidating the importance of sap-well creators in supporting biodiversity and ecosystem functioning.
","language":"English","publisher":"Wiley","doi":"10.1002/ece3.72277","usgsCitation":"Clawges, R., Blair, S., Eitel, J., Svancara, L.K., Vierling, L.A., and Vierling, K., 2025, Sapsucker wells as a keystone nutritional resource: Evaluating methods for detection of secondary sap consumers: Ecology and Evolution, v. 15, no. 10, e72277, 18 p., https://doi.org/10.1002/ece3.72277.","productDescription":"e72277, 18 p.","ipdsId":"IP-177667","costCenters":[{"id":49226,"text":"Northwest Climate Adaptation Science Center","active":true,"usgs":true}],"links":[{"id":496747,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/ece3.72277","text":"Publisher Index Page"},{"id":496642,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","county":"Custer Couty, Huerfano County, Pueblo County","otherGeospatial":"Wet Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -106.56183958865896,\n 38.22746340134614\n ],\n [\n -106.56183958865896,\n 37.04012010581634\n ],\n [\n -104.6650515745562,\n 37.04012010581634\n ],\n [\n -104.6650515745562,\n 38.22746340134614\n ],\n [\n -106.56183958865896,\n 38.22746340134614\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"15","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-10-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Clawges, Richard","contributorId":362438,"corporation":false,"usgs":false,"family":"Clawges","given":"Richard","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":950476,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blair, Shannon","contributorId":354984,"corporation":false,"usgs":false,"family":"Blair","given":"Shannon","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":950477,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Eitel, Jan H.","contributorId":236991,"corporation":false,"usgs":false,"family":"Eitel","given":"Jan H.","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":950478,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Svancara, Leona Kay 0009-0007-1936-6079","orcid":"https://orcid.org/0009-0007-1936-6079","contributorId":359789,"corporation":false,"usgs":true,"family":"Svancara","given":"Leona","middleInitial":"Kay","affiliations":[{"id":49226,"text":"Northwest Climate Adaptation Science Center","active":true,"usgs":true}],"preferred":true,"id":950479,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vierling, Lee A.","contributorId":169443,"corporation":false,"usgs":false,"family":"Vierling","given":"Lee","email":"","middleInitial":"A.","affiliations":[{"id":6711,"text":"University of Idaho, Moscow ID","active":true,"usgs":false}],"preferred":false,"id":950480,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Vierling, Kerri","contributorId":280031,"corporation":false,"usgs":false,"family":"Vierling","given":"Kerri","affiliations":[{"id":39599,"text":"ui","active":true,"usgs":false}],"preferred":false,"id":950481,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70273161,"text":"70273161 - 2025 - Initial responses of songbird communities to forest reclamation on legacy surface mines","interactions":[],"lastModifiedDate":"2025-12-17T14:58:18.760746","indexId":"70273161","displayToPublicDate":"2025-10-09T08:51:53","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1475,"text":"Ecosphere","active":true,"publicationSubtype":{"id":10}},"title":"Initial responses of songbird communities to forest reclamation on legacy surface mines","docAbstract":"Surface coal mining and subsequent reclamation efforts in the Appalachian Mountains, USA, transform the ecological characteristics of natural landscapes. The Forestry Reclamation Approach (FRA) is a mine reclamation method that emphasizes best management practices in forestry. FRA practices have demonstrated success in establishing native forests and accelerating natural succession on coal mines; however, no studies have empirically examined the effects of the FRA on bird communities. Our study aimed to assess the avian community composition within young forests reclaimed using the FRA after one decade of forest growth. Whereas traditional reclamation practices often support grassland avian guilds, we expected that the FRA would provide habitat for shrubland and young forest avian guilds. Moreover, we sought to determine whether FRA forests would contain known avian indicator species of the native forest land cover. In June 2022, we conducted point count surveys in high-elevation, red spruce-northern hardwood (RS-NH) forests in the Appalachian Mountains of eastern West Virginia, USA. Using Bayesian multispecies occupancy models, we assessed avian guild occupancy and species richness within two FRA forest age classes (2–5 years and 8–11 years). We also examined avian community composition within two older RS-NH reference age classes to predict the future avian composition within FRA forests if reclamation succeeds. We found that the FRA breeding bird community included all of the avian indicator species expected to inhabit a young RS-NH forest. These results suggest that after approximately one decade, legacy mines reclaimed using the FRA are progressing toward a native RS-NH forest that supports associated forest bird communities.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/ecs2.70423","usgsCitation":"Davenport, R.N., Barton, C.D., Cox, J., Guzy, J.C., Sherman, L., Larkin, J.L., Fearer, T., and Price, S.J., 2025, Initial responses of songbird communities to forest reclamation on legacy surface mines: Ecosphere, v. 16, no. 10, e70423, 15 p., https://doi.org/10.1002/ecs2.70423.","productDescription":"e70423, 15 p.","ipdsId":"IP-157888","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":497734,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/ecs2.70423","text":"Publisher Index Page"},{"id":497631,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"West Virginia","otherGeospatial":"Monongahela National Forest","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -78.9833,\n 38.6833\n ],\n [\n -78.9833,\n 38.545833\n ],\n [\n -78.8667,\n 38.545833\n ],\n [\n -78.8667,\n 38.6833\n ],\n [\n -78.9833,\n 38.6833\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"16","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-10-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Davenport, Rebecca N.","contributorId":364334,"corporation":false,"usgs":false,"family":"Davenport","given":"Rebecca","middleInitial":"N.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":952541,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barton, Christopher D.","contributorId":150222,"corporation":false,"usgs":false,"family":"Barton","given":"Christopher","email":"","middleInitial":"D.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":952542,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cox, John J.","contributorId":140196,"corporation":false,"usgs":false,"family":"Cox","given":"John J.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":952543,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Guzy, Jacquelyn C. 0000-0003-2648-398X","orcid":"https://orcid.org/0000-0003-2648-398X","contributorId":288520,"corporation":false,"usgs":true,"family":"Guzy","given":"Jacquelyn","email":"","middleInitial":"C.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":952544,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sherman, Lauren","contributorId":336563,"corporation":false,"usgs":false,"family":"Sherman","given":"Lauren","email":"","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":952545,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Larkin, Jeffery L.","contributorId":364335,"corporation":false,"usgs":false,"family":"Larkin","given":"Jeffery","middleInitial":"L.","affiliations":[{"id":38138,"text":"Indiana University of Pennsylvania","active":true,"usgs":false}],"preferred":false,"id":952546,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fearer, Todd","contributorId":264971,"corporation":false,"usgs":false,"family":"Fearer","given":"Todd","affiliations":[{"id":54600,"text":"Appalacian Mountains Joint Venture","active":true,"usgs":false}],"preferred":false,"id":952547,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Price, Steven J.","contributorId":364336,"corporation":false,"usgs":false,"family":"Price","given":"Steven","middleInitial":"J.","affiliations":[{"id":12425,"text":"University of Kentucky","active":true,"usgs":false}],"preferred":false,"id":952548,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70273034,"text":"70273034 - 2025 - Postrelease movements of captive-reared adult Atlantic Salmon in two Maine rivers","interactions":[],"lastModifiedDate":"2026-01-22T16:44:17.408711","indexId":"70273034","displayToPublicDate":"2025-10-08T10:59:42","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Postrelease movements of captive-reared adult Atlantic Salmon in two Maine rivers","docAbstract":"Atlantic Salmon Salmo salar remain at critically low levels in the United States, with the last remaining populations located in the state of Maine. In 2021, a pilot captive-rearing program, similar to a smolt-to-adult supplementation, was implemented to boost naturally spawning adults in support of recovery goals.
We conducted a 2-year acoustic telemetry study to track a subset of captive-reared salmon (N = 270) that were released into the Penobscot and Machias rivers. We evaluated their postrelease movement patterns, dam passage, and site fidelity between the two rivers, years, and seasons.
Atlantic Salmon that were released into the Penobscot River tended to overwinter, but their movement patterns varied between release years. In contrast, the Atlantic Salmon that were released into the Machias River were more likely to move directly downstream to the river exit. In addition, the fish that were released into the dammed Penobscot River frequently made multiple attempts to pass dams in both directions, often with passage delays and failures. Atlantic Salmon that were released during the summer displayed more exploratory movements than those that were released in the fall. Most Atlantic Salmon either left the river shortly after release (5–30 d) or the following spring (>120 d). Site fidelity was greater for the fall-released Atlantic Salmon (76%) than for the summer-released Atlantic Salmon (23%).
Overall, releasing salmon in the fall as sexually mature adults may increase site fidelity to the release reach, thereby enhancing the chances of successfully spawning in the wild.
Evaluation of thermal maturity in vitrinite-free or vitrinite-deficient sediments via fluorescence microspectrometry can provide relevant information related to petroleum exploration and thermal history assessment. However, variation in spectral fluorescence properties of alginite macerals with increasing thermal maturity is largely underexplored. Here, authors of this study have applied confocal laser-scanning microscopy (CLSM) in conjunction with fluorescence microspectrometry to a maturity series of marine Upper Devonian Tasmanites algae from the Ohio Shale (Huron Member) and a single sample from the Marcellus Formation of the Appalachian Basin. Spectral fluorescence properties of Tasmanites were evaluated in relation to orientation, measurement location, and the number of measurements per sample, and were compared to published literature. Emission spectra of Tasmanites from continuous wave laser excitation (405 nm) were acquired from sections perpendicular and parallel to bedding and at different positions within individual Tasmanites bodies. The results showed a progressive red-shift in emission maxima (λmax) in a large sample sized maturity series (N = 19), e.g., 493 to 578 nm for the perpendicular section at middle position. Further, blue-shifted apex and mineral-adjacent positions within sections perpendicular to bedding were observed, with the latter being reported here for the first time. While blue-shift at apex positions can be attributed to mechanical deformation-induced reorientation of photoselected fluorophores, the blue-shifted mineral-adjacent positions could result from strain loading and development of a plastic deformation region at the mineral contact zone with Tasmanites. A decrease in standard deviation with increasing number of measured emission maxima is well-observed, and 15 to 20 individual measurements per sample appears sufficient for low standard deviation and coefficient of variance. CLSM-derived thermal maturity parameters indicated that a moderate positive correlation of red/green quotient (Q650/500; R2 = 0.67) with solid bitumen reflectance (BRo in %) exists. For reproducible results, the determination of λmax and Q650/500 should be conducted exclusively in the middle position at perpendicular and parallel sections of the polished whole-rock pellets, where the lowest standard deviation in measurement was observed. These results strengthen the suitability and relevance of the CLSM technique in thermal maturity studies of dispersed organic matter (DOM) and contribute to the standardization of fluorescence microspectrometry methods in organic petrology investigation.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.coal.2025.104885","usgsCitation":"Kus, J., and Hackley, P.C., 2025, Confocal laser-scanning microscopy (CLSM)-based thermal maturity of Tasmanites and progress in standardization of fluorescence microspectrometry: International Journal of Coal Geology, v. 310, 104885, 16 p., https://doi.org/10.1016/j.coal.2025.104885.","productDescription":"104885, 16 p.","ipdsId":"IP-173105","costCenters":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"links":[{"id":496708,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.coal.2025.104885","text":"Publisher Index Page"},{"id":496478,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Kentucky, Ohio, Virginia, West Virginia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -80.64749053543926,\n 42.054831551917516\n ],\n [\n -84.5,\n 42.054831551917516\n ],\n [\n -84.5,\n 36.517775865399514\n ],\n [\n -80.64749053543926,\n 36.517775865399514\n ],\n [\n -80.64749053543926,\n 42.054831551917516\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"310","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Kus, Jolanta","contributorId":289942,"corporation":false,"usgs":false,"family":"Kus","given":"Jolanta","affiliations":[{"id":62291,"text":"BGR.de","active":true,"usgs":false}],"preferred":false,"id":949837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hackley, Paul C. 0000-0002-5957-2551 phackley@usgs.gov","orcid":"https://orcid.org/0000-0002-5957-2551","contributorId":592,"corporation":false,"usgs":true,"family":"Hackley","given":"Paul","email":"phackley@usgs.gov","middleInitial":"C.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":949838,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70273132,"text":"70273132 - 2025 - Longevity, age-specific survival, and mean generation time of Rana muscosa: Implications for conservation of possibly the longest lived Ranid frog","interactions":[],"lastModifiedDate":"2025-12-16T14:51:28.664901","indexId":"70273132","displayToPublicDate":"2025-10-08T08:45:47","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1467,"text":"Ecology and Evolution","active":true,"publicationSubtype":{"id":10}},"title":"Longevity, age-specific survival, and mean generation time of Rana muscosa: Implications for conservation of possibly the longest lived Ranid frog","docAbstract":"Life history strategies vary widely among species and play a vital role in extinction risk, especially in a rapidly changing environment. For many taxa, information on life history such as longevity, lifespan, and generation time is incomplete. This is especially true for amphibians, which have experienced large-scale declines in recent decades. The mountain yellow-legged frog (Rana muscosa) is a California endemic recognized as a state and federally endangered species. We evaluated a 23-year dataset of six wild R. muscosa populations in southern California. We calculated the average lifespan of individuals in these six populations to be approximately 9.5 years, with a mean generation time of 7.4 years. We did not detect a difference in longevity between sexes or a difference in apparent survival across various ages of adults. We also documented the longest-lived ranid frog ever recorded from a wild population: a male R. muscosa that was at least 21 years old. Our results suggest a relatively long generation time for this species, a characteristic that may benefit them because reproduction is regularly challenged by drought, fire activity, and disease. This information is important for understanding the complex life history of this endangered ranid frog and can help guide efforts to manage and recover the species.
","language":"English","publisher":"Wiley","doi":"10.1002/ece3.72213","usgsCitation":"Hitchcock, C.J., Backlin, A.R., Goldberg, A.R., Thomsen, S.K., Muths, E., Gallegos, E., and Fisher, R.D., 2025, Longevity, age-specific survival, and mean generation time of Rana muscosa: Implications for conservation of possibly the longest lived Ranid frog: Ecology and Evolution, v. 15, no. 10, e72213, 11 p., https://doi.org/10.1002/ece3.72213.","productDescription":"e72213, 11 p.","ipdsId":"IP-178709","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":497723,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/ece3.72213","text":"Publisher Index Page"},{"id":497564,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.5,\n 34.5\n ],\n [\n -118.5,\n 33.5\n ],\n [\n -116.5,\n 33.5\n ],\n [\n -116.5,\n 34.5\n ],\n [\n -118.5,\n 34.5\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"15","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-10-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Hitchcock, Cynthia Joan 0000-0001-9293-043X","orcid":"https://orcid.org/0000-0001-9293-043X","contributorId":225261,"corporation":false,"usgs":true,"family":"Hitchcock","given":"Cynthia","email":"","middleInitial":"Joan","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":952405,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Backlin, Adam R. 0000-0001-5618-8426 abacklin@usgs.gov","orcid":"https://orcid.org/0000-0001-5618-8426","contributorId":3802,"corporation":false,"usgs":true,"family":"Backlin","given":"Adam","email":"abacklin@usgs.gov","middleInitial":"R.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":952406,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goldberg, Amanda Renee 0000-0003-3094-8241","orcid":"https://orcid.org/0000-0003-3094-8241","contributorId":364259,"corporation":false,"usgs":true,"family":"Goldberg","given":"Amanda","middleInitial":"Renee","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":952407,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thomsen, Sarah Kay 0000-0001-5964-7536","orcid":"https://orcid.org/0000-0001-5964-7536","contributorId":330754,"corporation":false,"usgs":true,"family":"Thomsen","given":"Sarah","email":"","middleInitial":"Kay","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":952408,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Muths, Erin L. 0000-0002-5498-3132","orcid":"https://orcid.org/0000-0002-5498-3132","contributorId":243368,"corporation":false,"usgs":true,"family":"Muths","given":"Erin L.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":952409,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gallegos, Elizabeth 0000-0002-8402-2631 egallegos@usgs.gov","orcid":"https://orcid.org/0000-0002-8402-2631","contributorId":1528,"corporation":false,"usgs":true,"family":"Gallegos","given":"Elizabeth","email":"egallegos@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":952410,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Fisher, Robert D. 0000-0002-2956-3240 rdfisher@usgs.gov","orcid":"https://orcid.org/0000-0002-2956-3240","contributorId":3913,"corporation":false,"usgs":true,"family":"Fisher","given":"Robert","email":"rdfisher@usgs.gov","middleInitial":"D.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":952411,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70272199,"text":"70272199 - 2025 - Tree swallows as indicators of per- and polyfluoroalkyl substance exposure and effects at select Department of Defense sites along the East Coast and at sites with different sources in the Upper Midwest, United States","interactions":[],"lastModifiedDate":"2025-11-20T14:20:07.393739","indexId":"70272199","displayToPublicDate":"2025-10-08T08:40:12","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Tree swallows as indicators of per- and polyfluoroalkyl substance exposure and effects at select Department of Defense sites along the East Coast and at sites with different sources in the Upper Midwest, United States","docAbstract":"Questions remain about the distribution of per- and polyfluoroalkyl substances (PFAS) in the environment, the sources and movement within and between ecosystems, and whether there are effects from such exposure. Information from the Upper Midwest and the mid-Atlantic regions of the United States, which have different PFAS sources, were investigated. Concentrations of Total40 (sum of 40 PFAS), perfluorooctane sulfonate, perfluorohexane sulfonate, and Total13 (sum of 13 PFAS) were consistently higher, by as much as a factor of 40, in tree swallow (Tachycineta bicolor) tissue samples (eggs, nestlings, and diet) at sites along the East Coast, where aqueous film-forming foams (AFFF) were extensively used when compared with East Coast reference sites. Sites in the Upper Midwest, with other PFAS sources, had qualitatively lower concentrations of PFAS than AFFF source sites. Perfluorooctane sulfonate was the only PFAS detected in all samples. Concentrations of most other PFAS, such as the carboxylates and fluorotelomers, did not differ between AFFF and reference sites. Perfluorohexane sulfonate, the second-most common constituent of some legacy AFFF formulations, was <1% of Total40 at the reference sites in eggs and nestlings, but perfluorohexane sulfonate represented up to 9.7% (eggs) and 9.0% (nestlings) at AFFF-influenced sites. Despite differences in PFAS exposure, the daily probability of egg and nestling survival, as well as haptoglobin-like activity (PIT54) and total immunoglobulin Y, was similar across all sites. There were also no significant associations between these end points and concentrations of Total40 or individual PFAS in eggs or nestlings.
","language":"English","publisher":"Oxford Academic","doi":"10.1093/etojnl/vgaf207","usgsCitation":"Custer, C.M., Dummer, P.M., Schultz, S.L., Karouna-Renier, N., and Matson, C.W., 2025, Tree swallows as indicators of per- and polyfluoroalkyl substance exposure and effects at select Department of Defense sites along the East Coast and at sites with different sources in the Upper Midwest, United States: Environmental Toxicology and Chemistry, v. 44, no. 11, p. 3159-3191, https://doi.org/10.1093/etojnl/vgaf207.","productDescription":"33 p.","startPage":"3159","endPage":"3191","ipdsId":"IP-173181","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":496638,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"East Coast, Upper Midwest","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -69.67398671307569,\n 48.00020834558444\n ],\n [\n -78.77194547995512,\n 43.96819919165159\n ],\n [\n -78.43793485353297,\n 42.23585319711049\n ],\n [\n -75.42775284050555,\n 36.67513017535144\n ],\n [\n -67.63700987323536,\n 42.39377603789744\n ],\n [\n -66.75591617258152,\n 44.84423737267856\n ],\n [\n -69.67398671307569,\n 48.00020834558444\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.82915204679735,\n 47.113569003182164\n ],\n [\n -93.51126723295444,\n 47.38653958708926\n ],\n [\n -94.16537761257574,\n 44.79249428911524\n ],\n [\n -92.84827371125125,\n 44.426368083065114\n ],\n [\n -92.69192295771474,\n 45.067911232198185\n ],\n [\n -92.86216738261179,\n 45.68131217095913\n ],\n [\n -91.82915204679735,\n 47.113569003182164\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -89.65664003422744,\n 42.064825412625765\n ],\n [\n -89.65664003422744,\n 40.90525082104949\n ],\n [\n -88.48054551794385,\n 40.90525082104949\n ],\n [\n -88.48054551794385,\n 42.064825412625765\n ],\n [\n -89.65664003422744,\n 42.064825412625765\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"44","issue":"11","noUsgsAuthors":false,"publicationDate":"2025-10-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Custer, Christine M. 0000-0003-0500-1582 ccuster@usgs.gov","orcid":"https://orcid.org/0000-0003-0500-1582","contributorId":1143,"corporation":false,"usgs":true,"family":"Custer","given":"Christine","email":"ccuster@usgs.gov","middleInitial":"M.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950418,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dummer, Paul M. 0000-0002-2055-9480 pdummer@usgs.gov","orcid":"https://orcid.org/0000-0002-2055-9480","contributorId":3015,"corporation":false,"usgs":true,"family":"Dummer","given":"Paul","email":"pdummer@usgs.gov","middleInitial":"M.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950419,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schultz, Sandra L. 0000-0003-3394-2857 sschultz@usgs.gov","orcid":"https://orcid.org/0000-0003-3394-2857","contributorId":5966,"corporation":false,"usgs":true,"family":"Schultz","given":"Sandra","email":"sschultz@usgs.gov","middleInitial":"L.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":950420,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Karouna-Renier, Natalie 0000-0001-7127-033X nkarouna@usgs.gov","orcid":"https://orcid.org/0000-0001-7127-033X","contributorId":200983,"corporation":false,"usgs":true,"family":"Karouna-Renier","given":"Natalie","email":"nkarouna@usgs.gov","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":950421,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Matson, Cole W.","contributorId":362404,"corporation":false,"usgs":false,"family":"Matson","given":"Cole","middleInitial":"W.","affiliations":[{"id":13716,"text":"Baylor University","active":true,"usgs":false}],"preferred":false,"id":950422,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70273902,"text":"70273902 - 2025 - Experimental warming alters free-living nitrogen fixation in a humid tropical forest","interactions":[],"lastModifiedDate":"2026-02-12T15:30:52.35482","indexId":"70273902","displayToPublicDate":"2025-10-08T08:23:20","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2863,"text":"New Phytologist","active":true,"publicationSubtype":{"id":10}},"title":"Experimental warming alters free-living nitrogen fixation in a humid tropical forest","docAbstract":"Microbial nitrogen (N) fixation accounts for c. 97% of natural N inputs to terrestrial ecosystems. These microbes can be free-living in the soil and leaf litter (asymbiotic) or in symbiosis with plants. Warming is expected to increase N-fixation rates because warmer temperatures favor the growth and activity of N-fixing microbes.
We investigated the effects of warming on asymbiotic components of N fixation at a field warming experiment in Puerto Rico. We analyzed the function and composition of bacterial communities from surface soil and leaf litter samples. Warming significantly increased asymbiotic N-fixation rates in soil by 55% (to 0.002 kg ha−1 yr−1) and by 525% in leaf litter (to 14.518 kg ha−1 yr−1). This increase in N fixation was associated with changes in the N-fixing bacterial community composition and soil nutrients.
Our findings suggest that warming increases the natural N inputs from the atmosphere into this tropical forest due to changes in microbial function and composition, especially in the leaf litter. Given the importance of leaf litter in nutrient cycling, future research should investigate other aspects of N cycles in the leaf litter under warming conditions.
","language":"English","publisher":"New Phytologist Foundation","doi":"10.1111/nph.70592","usgsCitation":"Bartz, P.M., Grullón-Penkova, I.F., Cavaleri, M.A., Reed, S.C., Shahid, S., Wood, T.E., and Bachelot, B., 2025, Experimental warming alters free-living nitrogen fixation in a humid tropical forest: New Phytologist, v. 248, no. 6, p. 2750-2763, https://doi.org/10.1111/nph.70592.","productDescription":"14 p.","startPage":"2750","endPage":"2763","ipdsId":"IP-183096","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":499949,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/nph.70592","text":"Publisher Index Page"},{"id":499804,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Luquillo Experimental Forest, northeastern Puerto Rico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -65.86841127907454,\n 18.363328307173546\n ],\n [\n -65.86841127907454,\n 18.22384237790817\n ],\n [\n -65.70802904561418,\n 18.22384237790817\n ],\n [\n -65.70802904561418,\n 18.363328307173546\n ],\n [\n -65.86841127907454,\n 18.363328307173546\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"248","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-10-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Bartz, Parker M.","contributorId":366365,"corporation":false,"usgs":false,"family":"Bartz","given":"Parker","middleInitial":"M.","affiliations":[{"id":87461,"text":"Department of Biology, Oklahoma State University, Stillwater, OK, 74078, USA","active":true,"usgs":false}],"preferred":false,"id":955694,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grullón-Penkova, Iana F.","contributorId":366366,"corporation":false,"usgs":false,"family":"Grullón-Penkova","given":"Iana","middleInitial":"F.","affiliations":[{"id":87462,"text":"USDA Forest Service International Institute of Tropical Forestry, Rio Piedras, Puerto Rico, 00926, USA","active":true,"usgs":false}],"preferred":false,"id":955695,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cavaleri, Molly A.","contributorId":366367,"corporation":false,"usgs":false,"family":"Cavaleri","given":"Molly","middleInitial":"A.","affiliations":[{"id":87463,"text":"College of Forest Resources and Environmental Science, Michigan Technological University, Houghton, MI, 49931, USA","active":true,"usgs":false}],"preferred":false,"id":955696,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reed, Sasha C. 0000-0002-8597-8619 screed@usgs.gov","orcid":"https://orcid.org/0000-0002-8597-8619","contributorId":217604,"corporation":false,"usgs":true,"family":"Reed","given":"Sasha","email":"screed@usgs.gov","middleInitial":"C.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":955697,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Shahid, Saima","contributorId":366368,"corporation":false,"usgs":false,"family":"Shahid","given":"Saima","affiliations":[{"id":87464,"text":"Dept. of Biology, Oklahoma State University, Stillwater, OK, 74078, USA; Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Sheffield, South Yorkshire, S10 2TN, UK","active":true,"usgs":false}],"preferred":false,"id":955698,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wood, Tana E.","contributorId":197805,"corporation":false,"usgs":false,"family":"Wood","given":"Tana","middleInitial":"E.","affiliations":[],"preferred":false,"id":955699,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bachelot, Benedicte","contributorId":294542,"corporation":false,"usgs":false,"family":"Bachelot","given":"Benedicte","email":"","affiliations":[{"id":63597,"text":"Department of Plant Biology, Ecology, and Evolution, Oklahoma State University, Stillwater, OK, USA","active":true,"usgs":false}],"preferred":false,"id":955700,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70272763,"text":"70272763 - 2025 - Genetic and environmental factors associated with survival of a rare songbird in a fragmented urban landscape","interactions":[],"lastModifiedDate":"2026-01-07T17:38:24.690661","indexId":"70272763","displayToPublicDate":"2025-10-08T08:07:34","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5803,"text":"Conservation Science and Practice","active":true,"publicationSubtype":{"id":10}},"title":"Genetic and environmental factors associated with survival of a rare songbird in a fragmented urban landscape","docAbstract":"The coastal Cactus Wren (Campylorhynchus brunneicapillus) persists in small and fragmented populations throughout southern California that are subject to genetic drift and inbreeding. We combined individual banding and resighting data and genotyped individuals at 22 microsatellite loci to assess whether heterozygosity was associated with survival across three regional Cactus Wren populations on conserved lands in Orange and San Diego Counties between 2009 and 2020. Using Cormack-Jolly-Seber models (CJS) to analyze the 5-year capture histories of 528 individual wrens, we found that age class (hatch year or after hatch year) was the strongest predictor of survival. Individual heterozygosity and precipitation also had positive effects on survival, with survival up to 2 times higher in the most heterozygous individuals compared to the least and up to 1.5 times higher in high precipitation years versus drought years. Multi-locus heterozygosity was significantly correlated across loci, suggesting that inbreeding depression is likely driving the association between survival and heterozygosity. Study results support that genetic rescue efforts that reduce inbreeding have the potential to improve fitness and mitigate further loss of genetic variation in managed populations.
","language":"English","publisher":"Society for Conservation Biology","doi":"10.1111/csp2.70155","usgsCitation":"Vandergast, A.G., Mitelberg, A., Kus, B.E., Preston, K.L., Lynn, S., Houston, A., and Klinger, R.C., 2025, Genetic and environmental factors associated with survival of a rare songbird in a fragmented urban landscape: Conservation Science and Practice, v. 7, no. 12, e70155, 14 p., https://doi.org/10.1111/csp2.70155.","productDescription":"e70155, 14 p.","ipdsId":"IP-180356","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":497185,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":497395,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/csp2.70155","text":"Publisher Index Page"}],"country":"United States","state":"California","county":"Orange County, San Diego County","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.45098240465302,\n 33.788832546013026\n ],\n [\n -118.45098240465302,\n 32.58385755405139\n ],\n [\n -116.21159447208314,\n 32.58385755405139\n ],\n [\n -116.21159447208314,\n 33.788832546013026\n ],\n [\n -118.45098240465302,\n 33.788832546013026\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"7","issue":"12","noUsgsAuthors":false,"publicationDate":"2025-10-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Vandergast, Amy G. 0000-0002-7835-6571","orcid":"https://orcid.org/0000-0002-7835-6571","contributorId":57201,"corporation":false,"usgs":true,"family":"Vandergast","given":"Amy","middleInitial":"G.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951635,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitelberg, Anna 0000-0002-3309-9946 amitelberg@usgs.gov","orcid":"https://orcid.org/0000-0002-3309-9946","contributorId":218945,"corporation":false,"usgs":true,"family":"Mitelberg","given":"Anna","email":"amitelberg@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951636,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kus, Barbara E. 0000-0002-3679-3044 barbara_kus@usgs.gov","orcid":"https://orcid.org/0000-0002-3679-3044","contributorId":203745,"corporation":false,"usgs":true,"family":"Kus","given":"Barbara","email":"barbara_kus@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951637,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Preston, Kristine L. 0000-0002-6958-1128 kpreston@usgs.gov","orcid":"https://orcid.org/0000-0002-6958-1128","contributorId":207765,"corporation":false,"usgs":true,"family":"Preston","given":"Kristine","email":"kpreston@usgs.gov","middleInitial":"L.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951638,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lynn, Suellen 0000-0003-1543-0209 suellen_lynn@usgs.gov","orcid":"https://orcid.org/0000-0003-1543-0209","contributorId":3843,"corporation":false,"usgs":true,"family":"Lynn","given":"Suellen","email":"suellen_lynn@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951639,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Houston, Alexandra 0000-0002-8599-8265 ahouston@usgs.gov","orcid":"https://orcid.org/0000-0002-8599-8265","contributorId":139460,"corporation":false,"usgs":true,"family":"Houston","given":"Alexandra","email":"ahouston@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":951640,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Klinger, Robert C.","contributorId":363410,"corporation":false,"usgs":false,"family":"Klinger","given":"Robert","middleInitial":"C.","affiliations":[{"id":17847,"text":"USGS-WERC","active":true,"usgs":false}],"preferred":false,"id":951641,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70273841,"text":"70273841 - 2025 - Sea-level driven isolation of glacial plant refugia revealed by submerged lake sediment from the Bering Land Bridge and St. Matthew Island","interactions":[],"lastModifiedDate":"2026-02-06T15:04:57.311975","indexId":"70273841","displayToPublicDate":"2025-10-08T08:00:07","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":23288,"text":"Arctic Antarctic and Alpine Research","active":true,"publicationSubtype":{"id":10}},"title":"Sea-level driven isolation of glacial plant refugia revealed by submerged lake sediment from the Bering Land Bridge and St. Matthew Island","docAbstract":"Bering Land Bridge (BLB) climate and vegetation during the Last Glacial Maximum (LGM) remains largely understudied, given challenges associated with collecting records from the submerged BLB. Previous records, confined to the margins of the modern land area and adjacent shelf, reveal conflicting interpretations of Beringian vegetation during the LGM. Here, we reconstruct LGM vegetation, sedimentology, and stable isotopes from a central BLB paleo-lake (Lake Knebel, LK) and compare it with a Holocene peat record from nearby St. Matthew Island (SMI). Results show strong similarities between LGM and late Holocene pollen assemblages, although with differences in relative taxonomic abundance. LGM communities are consistent with a cold and dry steppe or herb tundra environment but suggest the possibility of localized Betula presence in low-lying areas. LK’s bedded lacustrine stratigraphy transitions into undisturbed marine sediments by ~19 ka, providing a maximum limiting age of the transgression. Shrub absence on SMI today and during the Holocene is consistent with island isolation before ~14 to 15 ka, when Betula expanded rapidly at most sites with Bølling-Allerød warming. The combined vegetation evidence indicates preservation of LGM tundra and steppe vegetation assemblages on SMI, suggesting that island vegetation communities may provide additional constraints on the timing of sea level transgression.
","language":"English","publisher":"Taylor and Francis","doi":"10.1080/15230430.2025.2557062","usgsCitation":"Jones, M.C., Anderson, L., Caissie, B.E., Harning, D.J., and Ager, T.A., 2025, Sea-level driven isolation of glacial plant refugia revealed by submerged lake sediment from the Bering Land Bridge and St. Matthew Island: Arctic Antarctic and Alpine Research, v. 57, no. 1, 2557062, 21 p., https://doi.org/10.1080/15230430.2025.2557062.","productDescription":"2557062, 21 p.","ipdsId":"IP-178054","costCenters":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":499933,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1080/15230430.2025.2557062","text":"Publisher Index Page"},{"id":499647,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Bering Land Bridge, St. Matthew Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -173.87930380308052,\n 63.86224983419106\n ],\n [\n -173.87930380308052,\n 60.66791533892487\n ],\n [\n -161.92701451875794,\n 60.66791533892487\n ],\n [\n -161.92701451875794,\n 63.86224983419106\n ],\n [\n -173.87930380308052,\n 63.86224983419106\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"57","issue":"1","noUsgsAuthors":false,"publicationDate":"2025-10-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Jones, Miriam C. 0000-0002-6650-7619","orcid":"https://orcid.org/0000-0002-6650-7619","contributorId":257239,"corporation":false,"usgs":true,"family":"Jones","given":"Miriam","email":"","middleInitial":"C.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":955184,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Anderson, Lesleigh 0000-0002-5264-089X","orcid":"https://orcid.org/0000-0002-5264-089X","contributorId":264358,"corporation":false,"usgs":true,"family":"Anderson","given":"Lesleigh","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":955185,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caissie, Beth Elaine 0000-0001-9587-1842","orcid":"https://orcid.org/0000-0001-9587-1842","contributorId":292500,"corporation":false,"usgs":true,"family":"Caissie","given":"Beth","email":"","middleInitial":"Elaine","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":955186,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harning, David J.","contributorId":366035,"corporation":false,"usgs":false,"family":"Harning","given":"David","middleInitial":"J.","affiliations":[{"id":13693,"text":"University of Colorado Boulder","active":true,"usgs":false}],"preferred":false,"id":955187,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ager, Thomas A. 0000-0002-5029-7581 tager@usgs.gov","orcid":"https://orcid.org/0000-0002-5029-7581","contributorId":736,"corporation":false,"usgs":true,"family":"Ager","given":"Thomas","email":"tager@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":955188,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ]}