1. Phytoplankton form the base of large river food webs but there are limited studies on the nature and drivers of communities over longer time scales. Further, climate change is projected to favor taxa associated with harmful algal blooms, but our knowledge of the timing, locations, and drivers of cyanobacteria in rivers lags that of lakes and marine environments.
2. We used a summer phytoplankton community dataset collected from 2010-2020 across main channel, side channel and backwater areas in the La Grange reach of the Illinois River to assess: 1) How much do summer phytoplankton communities across diverse aquatic areas within a large river vary from year to year?, 2) What environmental conditions are associated with that variation?, and 3) Do cyanobacteria respond differently than the full phytoplankton community?
3. We found greater differences in phytoplankton communities across years than among aquatic areas. Further, we showed that annual variation in phytoplankton communities was synchronous among taxa in the same aquatic area, rather than specific to each taxonomic group or taxa-area combination. After accounting for this spatial variation in annual dynamics, phytoplankton reflected river conditions across seasons, responding positively to summer total phosphorus and invasive carp abundance and negatively to winter discharge and spring silica to nitrogen ratio. Annual variation in cyanobacteria was similarly distinct among main channel, side channel and backwater areas but was best explained by the ratio of summer air temperature to discharge, representing conditions that favored growth over transport.
4. These results show that annual variation in summer phytoplankton and cyanobacterial communities both reflected the spatial diversity of the river landscape and responded to conditions that occurred at different spatial and temporal scales. Further, in this highly modified river basin, we showed that a mix of anthropogenic pressures including eutrophication, invasive species, and potential changes to winter and spring conditions affected the phytoplankton communities present in the summer. Thus, when evaluating long-term change and the potential for harmful algal blooms in rivers it is important to consider spatial diversity of phytoplankton communities, how their sensitivity to environmental change may vary across the river landscape, and the suite of human modifications acting on those communities.
","language":"English","publisher":"Wiley","doi":"10.1111/fwb.70195","usgsCitation":"Jankowski, K.J., Larson, J.H., and Manier, J.T., 2026, Seasonal environmental conditions and river morphology shape summer phytoplankton communities: Freshwater Biology, v. 71, no. 4, e70195, 20 p., https://doi.org/10.1111/fwb.70195.","productDescription":"e70195, 20 p.","ipdsId":"IP-175053","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":503773,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/fwb.70195","text":"Publisher Index Page"},{"id":503593,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Illinois","otherGeospatial":"Illinois River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -90.58518106565782,\n 39.93537513607859\n ],\n [\n -90.54393271346706,\n 39.87009717384808\n ],\n [\n -89.99004304364246,\n 40.285261805467\n ],\n [\n -89.80813473192549,\n 40.49787976952105\n ],\n [\n -89.6972594677261,\n 40.5232993810744\n ],\n [\n -89.61378517926603,\n 40.588699439676645\n ],\n [\n -89.67476866924434,\n 40.62615848345776\n ],\n [\n -89.94349848180836,\n 40.52558182165162\n ],\n [\n -90.22205602968836,\n 40.26158933292001\n ],\n [\n -90.58518106565782,\n 39.93537513607859\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"71","issue":"4","noUsgsAuthors":false,"publicationDate":"2026-03-27","publicationStatus":"PW","contributors":{"authors":[{"text":"Jankowski, Kathi Jo 0000-0002-3292-4182","orcid":"https://orcid.org/0000-0002-3292-4182","contributorId":207429,"corporation":false,"usgs":true,"family":"Jankowski","given":"Kathi","email":"","middleInitial":"Jo","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":960354,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Larson, James H. 0000-0002-6414-9758 jhlarson@usgs.gov","orcid":"https://orcid.org/0000-0002-6414-9758","contributorId":4250,"corporation":false,"usgs":true,"family":"Larson","given":"James","email":"jhlarson@usgs.gov","middleInitial":"H.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":960355,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Manier, John T. 0000-0002-8334-8226","orcid":"https://orcid.org/0000-0002-8334-8226","contributorId":335483,"corporation":false,"usgs":true,"family":"Manier","given":"John","email":"","middleInitial":"T.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":960356,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70275547,"text":"70275547 - 2026 - Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park","interactions":[],"lastModifiedDate":"2026-05-05T13:41:35.346712","indexId":"70275547","displayToPublicDate":"2026-03-26T09:02:17","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2898,"text":"Northeastern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park","docAbstract":"White-nose syndrome, a disease caused by the fungal-pathogen Pseudogymnoascus destructans, has caused drastic reductions in populations of several North American hibernating species of bats including Myotis lucifugus (Little Brown Bat), Myotis septentrionalis (Northern Long-eared Bat), and Perimyotis subflavus (Tricolored Bat). Recent data indicate that populations of Little Brown Bats may be stabilizing and/or increasing in the northeastern region of the US, while others, such as Northern Long-eared Bats, continue to decline. Whether these trends extend to the mid-Atlantic region is currently unknown. To better understand population changes over time, habitat associations, and species dynamics, we developed models of relative activity from bat acoustic data collected on the National Park Service's Chesapeake and Ohio Canal National Historical Park along the Potomac River Corridor in western Maryland between 2016 and 2022. Consistent with pre-disease habitat associations, Little Brown Bats and Tricolored Bats exhibited a positive correlation with proximity to water bodies. Notably, we found Little Brown Bat and Tricolored Bat populations potentially were increasing, whereas Northern Long-eared Bats showed no correlation with examined habitat covariates and had low detection levels, trends consistent with broader declines throughout their range.
","language":"English","publisher":"BioOne","doi":"10.1656/045.033.0110","usgsCitation":"Moran, M.L., Litterer, A.S., De La Cruz, J.L., Deeley, S., and Ford, W., 2026, Relative activity of three bat species Impacted by white-nose syndrome on the Chesapeake and Ohio Canal National Historical Park: Northeastern Naturalist, v. 33, no. 1, p. 104-127, https://doi.org/10.1656/045.033.0110.","productDescription":"24 p.","startPage":"104","endPage":"127","ipdsId":"IP-176893","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":503946,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","otherGeospatial":"Chesapeake and Ohio Canal National Historical Park","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -77.83958240457122,\n 39.497656689410064\n ],\n [\n -77.83958240457122,\n 39.437192609498794\n ],\n [\n -77.7718594829591,\n 39.437192609498794\n ],\n [\n -77.7718594829591,\n 39.497656689410064\n ],\n [\n -77.83958240457122,\n 39.497656689410064\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"33","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Moran, Megan L.","contributorId":370994,"corporation":false,"usgs":false,"family":"Moran","given":"Megan","middleInitial":"L.","affiliations":[{"id":81893,"text":"Virginia Polytechnic and State University","active":true,"usgs":false}],"preferred":false,"id":960855,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Litterer, Amber S.","contributorId":370995,"corporation":false,"usgs":false,"family":"Litterer","given":"Amber","middleInitial":"S.","affiliations":[{"id":81893,"text":"Virginia Polytechnic and State University","active":true,"usgs":false}],"preferred":false,"id":960856,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"De La Cruz, Jesse L.","contributorId":370996,"corporation":false,"usgs":false,"family":"De La Cruz","given":"Jesse","middleInitial":"L.","affiliations":[{"id":81893,"text":"Virginia Polytechnic and State University","active":true,"usgs":false}],"preferred":false,"id":960857,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Deeley, Sabrina M.","contributorId":348402,"corporation":false,"usgs":false,"family":"Deeley","given":"Sabrina M.","affiliations":[{"id":37230,"text":"EPA","active":true,"usgs":false}],"preferred":false,"id":960970,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ford, W. 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The systematic, long-term archive and open-access policy means that volcano observatories and research organisations have invested in integrating Sentinel-1 datasets into their monitoring systems. We identify 233 high priority volcanoes and estimate that Sentinel-1 data has been used in peer-reviewed publications for 90 of them. We examine a global archive of 3.3 million automatically processed Sentinel-1 interferograms of volcanoes and use machine learning methods to identify eruptions and periods of unrest. We then review the ways in which InSAR data are being used in different contexts. At frequently erupting basaltic systems in Iceland, Hawaiʻi, the Galápagos , and Piton de la Fournaise, InSAR has become an effective monitoring tool and is integrated with other datasets and models to forecast magma pathways. For large explosive eruptions, deformation measurements often remain challenging, but SAR backscatter is increasingly used to map damaging flows and measure the changing shape of ocean islands. Sentinel-1's long archive provides critical baseline measurements that are vital for measuring slow deformation, capturing new periods of unrest and providing fresh insights into subsurface dynamics. Understanding the drivers of deformation remains challenging and typically relies on integration with external datasets. Future European Space Agency missions have the potential to improve both resolution and coverage providing an even richer dataset to further enhance global volcano monitoring","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2026.115377","usgsCitation":"Biggs, J., Anantrasirichai, N., Anderson, K.R., Cayol, V., Dualeh, E.W., Dumont, Q., Ebmeier, S.K., Froger, J.L., Gaddes, M., Galleto, F., Gonzales, P.J., Hamling, I., Hooper, A., Lazecky, M., Lizama, C.N., and Pritchard, M.E., 2026, Advances in volcano monitoring driven by the first decade of Sentinel-1 observations: Remote Sensing of Environment, v. 339, 115377, 23 p., https://doi.org/10.1016/j.rse.2026.115377.","productDescription":"115377, 23 p.","ipdsId":"IP-177252","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":502040,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.rse.2026.115377","text":"Publisher Index 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Leeds","active":true,"usgs":false}],"preferred":false,"id":957980,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Lazecky, Milan","contributorId":368847,"corporation":false,"usgs":false,"family":"Lazecky","given":"Milan","affiliations":[{"id":13344,"text":"University of Leeds","active":true,"usgs":false}],"preferred":false,"id":957981,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Lizama, Camila Novoa","contributorId":368848,"corporation":false,"usgs":false,"family":"Lizama","given":"Camila","middleInitial":"Novoa","affiliations":[{"id":13344,"text":"University of Leeds","active":true,"usgs":false}],"preferred":false,"id":957982,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Pritchard, Matthew E.","contributorId":368849,"corporation":false,"usgs":false,"family":"Pritchard","given":"Matthew","middleInitial":"E.","affiliations":[{"id":12722,"text":"Cornell University","active":true,"usgs":false}],"preferred":false,"id":957983,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70275551,"text":"70275551 - 2026 - Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA","interactions":[],"lastModifiedDate":"2026-05-05T13:40:03.583544","indexId":"70275551","displayToPublicDate":"2026-03-26T08:10:49","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1497,"text":"Endangered Species Research","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA","docAbstract":"Gulf sturgeon Acipenser desotoi are anadromous fish that have undergone major population declines throughout their range. Habitat alteration and previous overharvest in commercial fisheries led to the species being listed as ‘threatened’ under the US Endangered Species Act in 1991. An accurate understanding of population dynamics, including survival, is necessary for monitoring population trends and recovery. Juvenile Gulf sturgeon are migratory within their natal river system; their survival is not well-studied, but their over-winter occupation of more saline habitat has been identified as a potential bottleneck to juvenile survival. Therefore, we estimated over-winter and annual survival of juvenile Gulf sturgeon in the Apalachicola River system (Florida, USA) using Cormack-Jolly-Seber models informed by acoustic telemetry data from 2014-2023. Seasonal apparent survival estimates ranged from 0.96 in the fall to 0.99 in the spring. Contrary to our expectation, results indicated that survival was high across all seasons with no notable difference in over-winter survival compared to other periods. We also estimated apparent annual survival to be 0.76 for juvenile Gulf sturgeon in the system. These findings suggest that over-winter juvenile mortality is not a major bottleneck to Gulf sturgeon population recovery within the Apalachicola River.
","language":"English","publisher":"Inter-Research","doi":"10.3354/esr01484","usgsCitation":"Wilson, R.T., Kaeser, A.J., Parker, S.W., Irwin, B., Hamel, M.J., and Fox, A.G., 2026, Seasonal and annual survival of acoustically tagged juvenile Gulf sturgeon in the Apalachicola River, Florida, USA: Endangered Species Research, v. 59, esr01484, 11 p., https://doi.org/10.3354/esr01484.","productDescription":"esr01484, 11 p.","ipdsId":"IP-178925","costCenters":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"links":[{"id":504190,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/esr01484","text":"Publisher Index Page"},{"id":503934,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Apalachicola River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -84.95028791680792,\n 30.700043969782456\n ],\n [\n -85.19392286381988,\n 30.177386904722987\n ],\n [\n -85.05427019537464,\n 29.68305846607859\n ],\n [\n -84.92950348298919,\n 29.693384215929285\n ],\n [\n -84.9740776762731,\n 29.905841704625477\n ],\n [\n -85.06025275203419,\n 30.11829919332167\n ],\n [\n -84.83441837459203,\n 30.69233750410389\n ],\n [\n -84.95028791680792,\n 30.700043969782456\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"59","noUsgsAuthors":false,"publicationDate":"2026-03-26","publicationStatus":"PW","contributors":{"authors":[{"text":"Wilson, Russell T.","contributorId":371003,"corporation":false,"usgs":false,"family":"Wilson","given":"Russell","middleInitial":"T.","affiliations":[{"id":12697,"text":"University of Georgia","active":true,"usgs":false}],"preferred":false,"id":960862,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaeser, Adam J.","contributorId":371004,"corporation":false,"usgs":false,"family":"Kaeser","given":"Adam","middleInitial":"J.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":960863,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Parker, Stephen W.","contributorId":371005,"corporation":false,"usgs":false,"family":"Parker","given":"Stephen","middleInitial":"W.","affiliations":[{"id":36221,"text":"University of Florida","active":true,"usgs":false}],"preferred":false,"id":960864,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Irwin, Brian J. 0000-0002-0666-2641","orcid":"https://orcid.org/0000-0002-0666-2641","contributorId":280043,"corporation":false,"usgs":true,"family":"Irwin","given":"Brian J.","affiliations":[{"id":198,"text":"Coop Res Unit Atlanta","active":true,"usgs":true}],"preferred":true,"id":960865,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hamel, Martin J.","contributorId":371006,"corporation":false,"usgs":false,"family":"Hamel","given":"Martin","middleInitial":"J.","affiliations":[{"id":12697,"text":"University of Georgia","active":true,"usgs":false}],"preferred":false,"id":960866,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fox, Adam G.","contributorId":371008,"corporation":false,"usgs":false,"family":"Fox","given":"Adam","middleInitial":"G.","affiliations":[{"id":12697,"text":"University of Georgia","active":true,"usgs":false}],"preferred":false,"id":960867,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70275568,"text":"70275568 - 2026 - Potential causes of shedding aggregations in prairie rattlesnakes","interactions":[],"lastModifiedDate":"2026-05-04T15:07:53.087044","indexId":"70275568","displayToPublicDate":"2026-03-26T07:59:58","publicationYear":"2026","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":"Potential causes of shedding aggregations in prairie rattlesnakes","docAbstract":"Aggregation is common across taxa and typically confers clear benefits to group members (e.g., allo-parenting, group defense, thermoregulation, access to resources). But aggregation can also be costly. The mechanisms that underpin aggregation—and the cues that elicit it—inform our understanding of how animals resolve tradeoffs among selection pressures. Snakes sometimes form conspicuous aggregations associated with hibernation, gestation, or parturition. Aggregation during ecdysis has also been described in some species, but infrequent observations and the synchronicity of ecdysis have confounded attempts to deduce the mechanism(s) responsible for the behavior. We documented aggregation during ecdysis in a population of asynchronously shedding prairie rattlesnakes (Crotalus viridis) and tested predictions generated from four hypotheses proposed to explain this behavior. We found that individuals undergoing ecdysis were more likely to aggregate. Our data did not support the hypothesis that rattlesnakes aggregate to improve their thermal efficiency, but we found some support for the reproductive facilitation and thermal landscape hypotheses as possible explanations for aggregation during ecdysis.
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\"}}]}","contact":"Associate Director, Ecosystems Mission Area
U.S. Geological Survey
Mail Stop 300
12201 Sunrise Valley Drive
Reston, VA 20192
Forest restoration in a watershed can provide numerous ecological improvements and social benefits, including reducing the risk of extreme wildfire. Understanding the values of the accrued benefits can be used to evaluate the use of funds to support restoration. The Rio Grande watershed is a vast watershed covering approximately 335,000 mile2 (867,646 km2). The Rio Grande watershed provides a host of ecosystem services and recreation opportunities and supports municipal water supplies. We estimate the non-market values of forest restoration in the Rio Grande watershed using a choice experiment (CE) approach. While the ecological benefits are established in literature, we focus on the social characteristics, capturing the human-forest system in a comprehensive manner. Our results indicate a significant willingness to pay (WTP) for improving air quality, reducing private property damage, and creating local jobs, with the highest WTP for job creation. Split-sample analysis indicates respondents residing within the watershed highly value the socio-economic attributes of the restoration, while ecological attributes are preferred more outside of the watershed. Our results provide insights into the benefits of multi-dimensional services from forest restoration activities in a watershed.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.forpol.2026.103754","usgsCitation":"Rahman, M.M., Meldrum, J.R., Mueller, J.M., and Huber, C., 2026, Valuing socio-economic and ecological attributes of forested watershed restoration to reduce wildfire risk in the southwestern U.S.: Forest Policy and Economics, v. 186, 103754, 12 p., https://doi.org/10.1016/j.forpol.2026.103754.","productDescription":"103754, 12 p.","ipdsId":"IP-182648","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":502038,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.forpol.2026.103754","text":"Publisher Index Page"},{"id":501641,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Mexico","otherGeospatial":"Rio Grande watershed","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -107.71673581103325,\n 35.09459922050081\n ],\n [\n -107.71673581103325,\n 32.69478018477595\n ],\n [\n -105.59302300959213,\n 32.69478018477595\n ],\n [\n -105.59302300959213,\n 35.09459922050081\n ],\n [\n -107.71673581103325,\n 35.09459922050081\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"186","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rahman, Mohammad Mashiur","contributorId":367933,"corporation":false,"usgs":false,"family":"Rahman","given":"Mohammad","middleInitial":"Mashiur","affiliations":[{"id":12698,"text":"Northern Arizona University","active":true,"usgs":false}],"preferred":false,"id":957912,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meldrum, James R. 0000-0001-5250-3759 jmeldrum@usgs.gov","orcid":"https://orcid.org/0000-0001-5250-3759","contributorId":195484,"corporation":false,"usgs":true,"family":"Meldrum","given":"James","email":"jmeldrum@usgs.gov","middleInitial":"R.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":957913,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mueller, Julie M.","contributorId":367934,"corporation":false,"usgs":false,"family":"Mueller","given":"Julie","middleInitial":"M.","affiliations":[{"id":12698,"text":"Northern Arizona University","active":true,"usgs":false}],"preferred":false,"id":957914,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Huber, Christopher","contributorId":363148,"corporation":false,"usgs":false,"family":"Huber","given":"Christopher","affiliations":[{"id":86628,"text":"NPS, formerly USGS","active":true,"usgs":false}],"preferred":false,"id":957915,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70275263,"text":"70275263 - 2026 - Seasons and seasonality in lakes: Synthesis amid global change","interactions":[],"lastModifiedDate":"2026-04-27T14:14:25.731879","indexId":"70275263","displayToPublicDate":"2026-03-25T10:23:04","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5456,"text":"Limnology and Oceanography Letters","active":true,"publicationSubtype":{"id":10}},"title":"Seasons and seasonality in lakes: Synthesis amid global change","docAbstract":"Seasonality in environmental conditions plays a fundamental role in shaping lake ecosystems. However, patterns of seasonality vary worldwide, and these patterns are shifting over time amid global change. Thus, it is increasingly important to evaluate how seasons and seasonality are represented in lake ecosystem research. Here, we used a literature review and global data analysis to synthesize approaches for conceptualizing seasons and seasonality in lakes. We found that a wide range of criteria are used to delineate discrete seasons in published literature, including fixed dates (e.g., months, solstice/equinox), environmental thresholds (e.g., temperature and precipitation cutoffs), and lake-specific indicators (e.g., ice cover, plankton phenology). Analyzing data from lakes worldwide, we found that using different criteria to define the same season resulted in divergent interpretations of ecosystem states. Based on our synthesis, we offer recommendations for how to incorporate seasonality into lake research and communications amid global change.
","language":"English","publisher":"Association for the Sciences of Limnology and Oceanography","doi":"10.1002/lol2.70116","usgsCitation":"Lewis, A.S., Richardson, D.C., Howard, D.W., Carey, C.C., Kraemer, B.M., Amitai, Y., Bansal, S., Eyto, E., Grossart, H., Hoffman, K.K., Hovel, R.A., Knoll, L.B., Oleksy, I., Santoso, A., Schmid, M., Schwefel, R., Straile, D., Sun, X., Weyhenmeyer, G.A., Woelmer, W.M., Wollrab, S., and Znachor, P., 2026, Seasons and seasonality in lakes: Synthesis amid global change: Limnology and Oceanography Letters, v. 11, no. 2, e70116, 20 p., https://doi.org/10.1002/lol2.70116.","productDescription":"e70116, 20 p.","ipdsId":"IP-179923","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":503764,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/lol2.70116","text":"Publisher Index 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flume","interactions":[],"lastModifiedDate":"2026-04-03T15:20:30.598951","indexId":"70274667","displayToPublicDate":"2026-03-25T10:16:02","publicationYear":"2026","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}},"title":"Controlling invasive carp ichthyoplankton dispersion using a streamwise-oriented bubble screen: A proof-of-concept validation in a laboratory flume","docAbstract":"Recent evidence of invasive grass carp (Ctenopharyngodon idella) reproducing in tributaries to the Laurentian Great Lakes has highlighted the need for control efforts targeting multiple life stages. Initial attempts to control dispersal of downstream-drifting invasive carp ichthyoplankton (i.e., eggs and larvae) using an oblique bubble screen (OBS) revealed that nearly neutrally buoyant grass carp eggs and larvae enter helical-like motions driven by the OBS, preventing aggregation within a single capture location. To improve dispersal control methods for such early-life stage carp, we used a laboratory flume to investigate the efficacy of a streamwise-oriented bubble screen to facilitate their near-bank capture. Five early-life stages of grass carp were tested: live water-hardened eggs, pre- and post-gas bladder inflation larvae, dead larvae, and dead eggs (preserved in formalin solution and later rehydrated). A range of mean channel velocities (0.23, 0.45, and 0.75 m/s) was tested for all drifters. Capture percentages increased with increasing airflow. Preserved eggs, for instance, showed capture percentages up to 95 %, 87 %, and 69 % at low, medium, and high water velocities for the highest airflow rate, respectively, in contrast with the lower than 5 % capture measured for zero airflow cases. Symmetric secondary flow structures on either side of the bubble screen induced helical trajectories of drifters and facilitated their capture in net-arrays along each wall. Velocity data were used to estimate helical recirculation timescales, enabling calculation of optimal bubble diffuser and net-array lengths for desired capture rates. This study provides useful guidance for the design of effective systems to control dispersal of downstream-drifting ichthyoplankton of invasive carp in streams.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.jglr.2026.102784","usgsCitation":"Prasad, V., Doyle, H.F., Suski, C., Jackson, P.R., George, A.E., Fischer, J.R., Stahlschmidt, B.H., Herndon, A.M., and Tinoco, R.O., 2026, Controlling invasive carp ichthyoplankton dispersion using a streamwise-oriented bubble screen: A proof-of-concept validation in a laboratory flume: Journal of Great Lakes Research, https://doi.org/10.1016/j.jglr.2026.102784.","ipdsId":"IP-176409","costCenters":[{"id":36532,"text":"Central Midwest Water Science Center","active":true,"usgs":true}],"links":[{"id":502459,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.jglr.2026.102784","text":"Publisher Index Page"},{"id":502164,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"edition":"Online First","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Prasad, Vindhyawasini 0000-0003-0585-7217","orcid":"https://orcid.org/0000-0003-0585-7217","contributorId":296287,"corporation":false,"usgs":false,"family":"Prasad","given":"Vindhyawasini","email":"","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":958630,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doyle, Henry F. 0000-0001-9942-8602","orcid":"https://orcid.org/0000-0001-9942-8602","contributorId":369222,"corporation":false,"usgs":false,"family":"Doyle","given":"Henry","middleInitial":"F.","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":958631,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Suski, Cory 0000-0001-8280-873X","orcid":"https://orcid.org/0000-0001-8280-873X","contributorId":364207,"corporation":false,"usgs":false,"family":"Suski","given":"Cory","affiliations":[{"id":16984,"text":"University of Illinois at Urbana-Champaign","active":true,"usgs":false}],"preferred":false,"id":958632,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jackson, P. 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Here we present the open-source Python Energy Balance model for Snow and Ice (PEBSI), which includes physically based albedo evolution using the Snow, Ice and Aerosol Radiative (SNICAR) model. PEBSI is calibrated and validated using robust in situ data from Gulkana Glacier, Alaska from 2000 to 2024. Simulations forced with original and bias-corrected climate reanalysis data show that statistically downscaling reanalysis data with in situ observations is necessary to reproduce summer mass balance (mean absolute error [MAE] = 0.75 m w.e. vs 0.22 m w.e., respectively). A grid search across two parameters, a precipitation factor and a densification parameter, reveals tradeoffs in performance compared to seasonal mass balance and end-of-winter snow density and depth. No single combination of parameters minimizes all errors, underscoring the inherent overparameterization of energy-balance models and challenges with translating coarse climate data to the glacier scale. The calibrated model successfully simulates the 2024 melt season, agreeing with surface-height change (MAE = 0.48 m) and albedo (MAE = 0.066) observations. Moving forward, PEBSI provides unique opportunities to quantify albedo feedbacks and their impact on present and future glacier mass loss.
","language":"English","publisher":"Cambridge University Press","doi":"10.1017/jog.2026.10154","usgsCitation":"Wilson, C.V., Rounce, D.R., Sass, L., Wells, A., Baker, E.H., Flanner, M., and Skiles, S.M., 2026, The Python Energy Balance model for Snow and Ice (PEBSI): Application and tradeoff analysis on Gulkana Glacier, Alaska: Journal of Glaciology, v. 72, e47, 14 p., https://doi.org/10.1017/jog.2026.10154.","productDescription":"e47, 14 p.","ipdsId":"IP-182327","costCenters":[{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true}],"links":[{"id":504805,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1017/jog.2026.10154","text":"Publisher Index Page"},{"id":504684,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Gulkana Glacier","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -145.51627002350358,\n 63.31727093330744\n ],\n [\n -145.27750187125,\n 63.31727093330744\n ],\n [\n -145.27750187125,\n 63.218631630380344\n ],\n [\n -145.51627002350358,\n 63.218631630380344\n ],\n [\n -145.51627002350358,\n 63.31727093330744\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"72","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Wilson, Claire V. 0009-0008-6281-3441","orcid":"https://orcid.org/0009-0008-6281-3441","contributorId":371499,"corporation":false,"usgs":false,"family":"Wilson","given":"Claire","middleInitial":"V.","affiliations":[{"id":12943,"text":"Carnegie Mellon University","active":true,"usgs":false}],"preferred":false,"id":961917,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rounce, David R. 0000-0002-4481-4191","orcid":"https://orcid.org/0000-0002-4481-4191","contributorId":371500,"corporation":false,"usgs":false,"family":"Rounce","given":"David","middleInitial":"R.","affiliations":[{"id":12943,"text":"Carnegie Mellon University","active":true,"usgs":false}],"preferred":false,"id":961918,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sass, Louis 0000-0003-4677-029X lsass@usgs.gov","orcid":"https://orcid.org/0000-0003-4677-029X","contributorId":221141,"corporation":false,"usgs":true,"family":"Sass","given":"Louis","email":"lsass@usgs.gov","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":961919,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wells, Albin","contributorId":346929,"corporation":false,"usgs":false,"family":"Wells","given":"Albin","email":"","affiliations":[{"id":12943,"text":"Carnegie Mellon University","active":true,"usgs":false}],"preferred":false,"id":961920,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Baker, Emily H. 0000-0002-0938-3496","orcid":"https://orcid.org/0000-0002-0938-3496","contributorId":371501,"corporation":false,"usgs":false,"family":"Baker","given":"Emily","middleInitial":"H.","affiliations":[{"id":24583,"text":"former USGS employee","active":true,"usgs":false}],"preferred":false,"id":961921,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Flanner, Mark 0000-0003-4012-174X","orcid":"https://orcid.org/0000-0003-4012-174X","contributorId":371502,"corporation":false,"usgs":false,"family":"Flanner","given":"Mark","affiliations":[{"id":37387,"text":"University of Michigan","active":true,"usgs":false}],"preferred":false,"id":961922,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Skiles, S. 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The study objective was to quantify CM and REE concentrations in coal and coal ash in the US Gulf Coast region. CM and REE concentrations were measured for 118 samples from outcrops and 14 mines in the Gulf Coast. Results show that total REE + Yttrium (REY) concentrations (dry coal basis) are comparable to those of the upper continental crust (UCC) with localized hot spots, such as the Texas Gibbons Creek mine (REY ≤ ~ 2860 ppm). When normalized to UCC REY concentration (169 ppm, dry coal basis), REY to UCC ratios for Gulf Coast coal samples range from 0.1 to 17 (median ratio 0.6). REE extractability from lignites is high (median: 63%–93%) using environmentally benign weak acid. In addition to raw coal, coal ash from power plants could also serve as an REE source with a median ratio of REY in ash relative to coal of 4; however, extractability from coal ash is generally much lower (≤ 5% using the same weak acid as in coal). The median basket price for extracted REY as oxides from coal, assuming 70% extractability, is $3.2 per tonne of coal and $186 billion based on 58 billion metric tonnes of dry coal in the Gulf Coast. REEs important for magnets (Pr + Nd + Tb + Dy) account for ~ 80% of the total value. The corresponding median basket price for extracted REY as oxides from coal ash, assuming ~ 30% extractability, is ~$4.4 per tonne of ash and $1.2 billion based on 258 million tonnes of ash. REE production from coal would likely require co-products, such as activated carbon or humic acids, to attain economic viability. Production of REEs from coal ash could offset remediation costs related to potential water contamination. This reconnaissance study shows the potential for REE production from coal and coal ash in the Gulf Coast; however, carbon coproducts and/or societal benefits would likely be required for socioeconomic viability.
","language":"English","publisher":"Springer Nature","doi":"10.1007/s40789-026-00872-y","usgsCitation":"Scanlon, B.R., Reedy, R.C., Elliott, B.A., Hower, J.C., Kyle, J.R., Locmelis, M., Theaker, N., and Warwick, P., 2026, Rare earth element potential in coal and coal ash in the U.S. Gulf Coast: International Journal of Coal Science & Technology, v. 13, 28, 13 p., https://doi.org/10.1007/s40789-026-00872-y.","productDescription":"28, 13 p.","ipdsId":"IP-174374","costCenters":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"links":[{"id":501611,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s40789-026-00872-y","text":"Publisher Index Page"},{"id":501587,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alabama, Florida, Louisiana, Mississippi, Texas","otherGeospatial":"Gulf Coast","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -102.95736263948356,\n 36.722990342806\n ],\n [\n -102.95736263948356,\n 27.809267728853044\n ],\n [\n -82.6890953748541,\n 27.809267728853044\n ],\n [\n -82.6890953748541,\n 36.722990342806\n ],\n [\n -102.95736263948356,\n 36.722990342806\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"13","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Scanlon, Bridget R. 0000-0002-1234-4199","orcid":"https://orcid.org/0000-0002-1234-4199","contributorId":328586,"corporation":false,"usgs":false,"family":"Scanlon","given":"Bridget","email":"","middleInitial":"R.","affiliations":[{"id":78414,"text":"Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin, J.J. 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Pickle Research Campus, Bldg. 130, 10100 Burnet Rd., Austin, TX 78758-4445","active":true,"usgs":false}],"preferred":false,"id":957936,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Locmelis, Marek 0000-0002-9328-0552","orcid":"https://orcid.org/0000-0002-9328-0552","contributorId":367947,"corporation":false,"usgs":false,"family":"Locmelis","given":"Marek","affiliations":[{"id":78414,"text":"Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin, J.J. Pickle Research Campus, Bldg. 130, 10100 Burnet Rd., Austin, TX 78758-4445","active":true,"usgs":false}],"preferred":false,"id":957937,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Theaker, Nolan 0000-0001-5194-2004","orcid":"https://orcid.org/0000-0001-5194-2004","contributorId":367948,"corporation":false,"usgs":false,"family":"Theaker","given":"Nolan","affiliations":[{"id":87651,"text":"University of North Dakota, Institute of Energy Studies, Grand Forks, ND, USA","active":true,"usgs":false}],"preferred":false,"id":957938,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Warwick, Peter D. 0000-0002-3152-7783","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":205928,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":957939,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70275231,"text":"70275231 - 2026 - Thermal and dielectric properties of Juno’s regolith at one millimeter wavelength","interactions":[],"lastModifiedDate":"2026-04-23T14:38:33.328511","indexId":"70275231","displayToPublicDate":"2026-03-25T09:35:44","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":17061,"text":"Planetary Science Journal","active":true,"publicationSubtype":{"id":10}},"title":"Thermal and dielectric properties of Juno’s regolith at one millimeter wavelength","docAbstract":"We present the modeling results of the thermal lightcurve of asteroid (3) Juno at the wavelength of λ = 1.3 mm measured by the Atacama Large Millimeter-submillimeter Array. A thermophysical model together with a radiative transfer model suggests a thermal inertia of 13 ± 10 [J m−2 K−1 s−0.5], an equivalent emissivity of 0.8 ± 0.1, a loss tangent of 0.4 ± 0.3, and an index of refraction 1.8 ± 0.3. Based on previous laboratory measurements, the modeled index of refraction suggests a regolith porosity of about 45%. However, thermal inertia models using the material parameters of ordinary chondrite indicate a grain size of ∼10 μm and require a high porosity of ∼90% to explain the low thermal inertia. In order to explain such a contradiction, we postulate that some repulsive mechanism might be in effect to reduce the contact of grains and therefore the thermal inertia. The loss tangent of Juno’s regolith corrected for the modeled thermal skin depth is in the order of 0.5, much higher than that of the lunar regolith and indicating an electrical skin depth of L = 0.1–1.4 mm that is within the thermal skin depth. The shape of the rotational lightcurve of Juno in the millimeter wavelengths is dominated by its irregular shape, but rotational variations in the thermal and/or dielectric properties cannot be ruled out. Our results demonstrate that millimeter-wavelength observations of asteroids provide an extra dimension of constraints to the porosity and grain size of asteroid regolith compared to the thermal infrared observations.
","language":"English","publisher":"IOP Science","doi":"10.3847/PSJ/ae468f","usgsCitation":"Li, J., Titus, T.N., Moullet, A., and Hsieh, H.H., 2026, Thermal and dielectric properties of Juno’s regolith at one millimeter wavelength: Planetary Science Journal, v. 7, no. 3, 71, 12 p., https://doi.org/10.3847/PSJ/ae468f.","productDescription":"71, 12 p.","ipdsId":"IP-156204","costCenters":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"links":[{"id":503447,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3847/psj/ae468f","text":"Publisher Index Page"},{"id":503339,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"asteroid (3) Juno","volume":"7","issue":"3","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Li, J-Y","contributorId":370357,"corporation":false,"usgs":false,"family":"Li","given":"J-Y","affiliations":[{"id":24584,"text":"PSI","active":true,"usgs":false}],"preferred":false,"id":960196,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Titus, Timothy N. 0000-0003-0700-4875 ttitus@usgs.gov","orcid":"https://orcid.org/0000-0003-0700-4875","contributorId":146,"corporation":false,"usgs":true,"family":"Titus","given":"Timothy","email":"ttitus@usgs.gov","middleInitial":"N.","affiliations":[{"id":131,"text":"Astrogeology Science Center","active":true,"usgs":true}],"preferred":true,"id":960197,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moullet, Arielle","contributorId":224979,"corporation":false,"usgs":false,"family":"Moullet","given":"Arielle","email":"","affiliations":[{"id":41014,"text":"SOFIA/USRA, Moffett Field, CA","active":true,"usgs":false}],"preferred":false,"id":960198,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hsieh, Henry H.","contributorId":224980,"corporation":false,"usgs":false,"family":"Hsieh","given":"Henry","email":"","middleInitial":"H.","affiliations":[{"id":13179,"text":"Planetary Science Institute","active":true,"usgs":false}],"preferred":false,"id":960199,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70276314,"text":"70276314 - 2026 - Status of round goby invasion fronts in New York and Quebec: Implications for Lake Champlain","interactions":[],"lastModifiedDate":"2026-05-28T14:21:32.534574","indexId":"70276314","displayToPublicDate":"2026-03-25T09:17:24","publicationYear":"2026","noYear":false,"publicationType":{"id":27,"text":"Preprint"},"publicationSubtype":{"id":32,"text":"Preprint"},"seriesTitle":{"id":19846,"text":"BioRxiv","active":true,"publicationSubtype":{"id":32}},"title":"Status of round goby invasion fronts in New York and Quebec: Implications for Lake Champlain","docAbstract":"Invasive round goby Neogobius melanostomus have advanced eastward through the state of New York and provinces of Ontario and Quebec over the past two decades and are approaching Lake Champlain, one of the largest lakes in North America. This manuscript describes international efforts to monitor round goby populations during 2021–2025 on (a) the southern approach to Lake Champlain via the Hudson River and Champlain Canal, and (b) the northern approach to Lake Champlain via the Saint Lawrence River and Richelieu River. Monitoring utilized environmental DNA (eDNA), backpack electrofishing, beach seining, benthic trawling, and viral hemorrhagic septicemia virus (VHSV) testing. In the Champlain Canal, round goby were captured as far north as the downstream side of the C1 dam (97 kilometers [km] from Lake Champlain) while eDNA detections occurred as far north as the upstream side of the C2 dam (90 km from Lake Champlain). In the Richelieu River, round goby were captured as far south as Saint-Marc-sur-Richelieu (82 km from Lake Champlain) while the southern-most eDNA detections occurred near the Canadian side of the international border (4 km from Lake Champlain). Water temperature influenced habitat usage of round goby in the Champlain Canal, with catch rates in near-shore areas declining at < 10 °C. All VHSV test results were non-detections at the mouth of the Richelieu River, while one positive and two inconclusive results occurred along the Champlain Canal. Together, these data have informed multiple mitigation measures and have implications for management of aquatic invasive species across North America.
","language":"English","publisher":"BioRxiv","doi":"10.64898/2026.03.23.712452","usgsCitation":"George, S.D., Diebboll, H., Pearson, S., Goldsmit, J., Drouin, A., Vachon, N., Côté, G., Daudelin, S., Bartron, M.L., Modley, M., Littrell, K., Getchell, R.G., Fiorentino, R., Sadekoski, T., Finkelstein, J., Darling, M., Parent, G., and Atkins, L., 2026, Status of round goby invasion fronts in New York and Quebec: Implications for Lake Champlain: BioRxiv, preprint posted March 25, 2026, https://doi.org/10.64898/2026.03.23.712452.","productDescription":"26 p.","ipdsId":"IP-187768","costCenters":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"links":[{"id":504816,"rank":0,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.64898/2026.03.23.712452","text":"External 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Steven","contributorId":303228,"corporation":false,"usgs":false,"family":"Pearson","given":"Steven","email":"","affiliations":[{"id":13678,"text":"New York State Department of Environmental Conservation","active":true,"usgs":false}],"preferred":false,"id":962062,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Goldsmit, Jesica","contributorId":371577,"corporation":false,"usgs":false,"family":"Goldsmit","given":"Jesica","affiliations":[{"id":88179,"text":"Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Direction principale de l’expertise sur la faune aquatique","active":true,"usgs":false}],"preferred":false,"id":962063,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Drouin, Annick","contributorId":371578,"corporation":false,"usgs":false,"family":"Drouin","given":"Annick","affiliations":[{"id":88179,"text":"Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Direction principale de l’expertise sur la faune aquatique","active":true,"usgs":false}],"preferred":false,"id":962064,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Vachon, Nathalie","contributorId":371580,"corporation":false,"usgs":false,"family":"Vachon","given":"Nathalie","affiliations":[{"id":88180,"text":"Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Direction de la gestion de la faune de l’Estrie, de Montréal, de la Montérégie et de Laval","active":true,"usgs":false}],"preferred":false,"id":962066,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Côté, Guillaume","contributorId":371579,"corporation":false,"usgs":false,"family":"Côté","given":"Guillaume","affiliations":[{"id":88179,"text":"Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs, Direction principale de l’expertise sur la faune aquatique","active":true,"usgs":false}],"preferred":false,"id":962065,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Daudelin, Siena","contributorId":371581,"corporation":false,"usgs":false,"family":"Daudelin","given":"Siena","affiliations":[{"id":88181,"text":"Parks Canada, Quebec Waterways","active":true,"usgs":false}],"preferred":false,"id":962067,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Bartron, Meredith L.","contributorId":149109,"corporation":false,"usgs":false,"family":"Bartron","given":"Meredith","email":"","middleInitial":"L.","affiliations":[{"id":6678,"text":"U.S. Fish and Wildlife Service, Alaska Maritime National Wildlife Refuge","active":true,"usgs":false},{"id":26874,"text":"USFWS, Lamar, PA","active":true,"usgs":false}],"preferred":false,"id":962068,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Modley, Meg","contributorId":371582,"corporation":false,"usgs":false,"family":"Modley","given":"Meg","affiliations":[{"id":88182,"text":"Lake Champlain Basin Program/New England Interstate Water Pollution Control Commission","active":true,"usgs":false}],"preferred":false,"id":962069,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Littrell, Kate","contributorId":371583,"corporation":false,"usgs":false,"family":"Littrell","given":"Kate","affiliations":[{"id":88183,"text":"New York Power Authority, Environmental, Health & Safety","active":true,"usgs":false}],"preferred":false,"id":962070,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Getchell, Rodman G.","contributorId":201129,"corporation":false,"usgs":false,"family":"Getchell","given":"Rodman","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":962071,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Fiorentino, Rob","contributorId":371585,"corporation":false,"usgs":false,"family":"Fiorentino","given":"Rob","affiliations":[{"id":88184,"text":"New York State Department of Environmental Conservation, Bureau of Fisheries, Region 5","active":true,"usgs":false}],"preferred":false,"id":962072,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Sadekoski, Thomas R. 0009-0006-0450-6385","orcid":"https://orcid.org/0009-0006-0450-6385","contributorId":349875,"corporation":false,"usgs":true,"family":"Sadekoski","given":"Thomas R.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":962073,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Finkelstein, Jason S. 0000-0002-7496-7236","orcid":"https://orcid.org/0000-0002-7496-7236","contributorId":202452,"corporation":false,"usgs":true,"family":"Finkelstein","given":"Jason S.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":962074,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Darling, Michael J. 0009-0008-5733-3005","orcid":"https://orcid.org/0009-0008-5733-3005","contributorId":332525,"corporation":false,"usgs":true,"family":"Darling","given":"Michael J.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":962075,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Parent, Geneviève","contributorId":371587,"corporation":false,"usgs":false,"family":"Parent","given":"Geneviève","affiliations":[{"id":88187,"text":"Fisheries and Oceans Canada, Maurice Lamontagne Institute","active":true,"usgs":false}],"preferred":false,"id":962076,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Atkins, Lauren M.","contributorId":291382,"corporation":false,"usgs":false,"family":"Atkins","given":"Lauren M.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":962077,"contributorType":{"id":1,"text":"Authors"},"rank":18}]}} ,{"id":70274756,"text":"70274756 - 2026 - Mangrove ecosystems: Importance, threats and opportunities for restoration","interactions":[],"lastModifiedDate":"2026-04-08T15:26:45.625033","indexId":"70274756","displayToPublicDate":"2026-03-25T08:20:32","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3709,"text":"Water","active":true,"publicationSubtype":{"id":10}},"title":"Mangrove ecosystems: Importance, threats and opportunities for restoration","docAbstract":"Mangroves are crucial for biodiversity conservation, coastal protection, and supporting local livelihoods. Mangroves may also protect coasts from storms and rising sea levels and can play a major role in climate mitigation. Threats to their health include activities such as infrastructural development, urban encroachment, aquaculture and crop farming, and oil and gas exploration. We review the threats and opportunities for the restoration of mangrove ecosystems on the coasts of Africa, which are highly impacted by oil spills. The most important challenge for mangrove restoration identified in this review is the restoration of appropriate hydrologic and salinity regimes prior to natural recruitment or the active planting of propagules.
","language":"English","publisher":"MDPI","doi":"10.3390/w18070787","usgsCitation":"Ohimain, E.I., Turner, R.E., and Middleton, B.A., 2026, Mangrove ecosystems: Importance, threats and opportunities for restoration: Water, v. 18, no. 7, 787, 13 p., https://doi.org/10.3390/w18070787.","productDescription":"787, 13 p.","ipdsId":"IP-186012","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":502484,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3390/w18070787","text":"Publisher Index Page"},{"id":502276,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"7","noUsgsAuthors":false,"publicationDate":"2026-03-26","publicationStatus":"PW","contributors":{"authors":[{"text":"Ohimain, Elijah I. 0000-0002-5491-6271","orcid":"https://orcid.org/0000-0002-5491-6271","contributorId":369427,"corporation":false,"usgs":false,"family":"Ohimain","given":"Elijah","middleInitial":"I.","affiliations":[{"id":87767,"text":"Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria","active":true,"usgs":false}],"preferred":false,"id":958941,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, Robert Eugene 0000-0002-1368-4160","orcid":"https://orcid.org/0000-0002-1368-4160","contributorId":369428,"corporation":false,"usgs":false,"family":"Turner","given":"Robert","middleInitial":"Eugene","affiliations":[{"id":5115,"text":"Louisiana State University","active":true,"usgs":false}],"preferred":false,"id":958942,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Middleton, Beth A. 0000-0002-1220-2326","orcid":"https://orcid.org/0000-0002-1220-2326","contributorId":216869,"corporation":false,"usgs":true,"family":"Middleton","given":"Beth","middleInitial":"A.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":958943,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70275343,"text":"70275343 - 2026 - Tag retention, growth, condition, and survival of externally marked Yellow Perch","interactions":[],"lastModifiedDate":"2026-04-30T15:05:45.427802","indexId":"70275343","displayToPublicDate":"2026-03-25T08:00:41","publicationYear":"2026","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":"Tag retention, growth, condition, and survival of externally marked Yellow Perch","docAbstract":"Objective:
Determining the movement and survival of Yellow Perch Perca flavescens that inhabit Lake Erie is a priority management concern, yet contemporary understanding of their cross-jurisdictional movements and exploitation is lacking. To support future movement and survival studies, we evaluated the retention rates, condition, growth, and survival associated with four external tagging methods.
Methods: One-hundred hatchery- reared Yellow Perch (188–257 mm) were tagged and held in recirculating aquaculture systems over a 168- d period. We tested four external tag types, including loop tags, ring tags, streamer tags, and T- bar anchor tags, and quantified tag retention rates, as well as tagging effects on condition, growth, and survival.
Results: T- bar anchor and loop tags had 100% retention, whereas ring (54%) and streamer (0%) retention was poor. The condition and growth of fish were not affected by any of the tagging methods; however, the loop tags caused abrasive wounds near the tagging site that could lead to secondary infection and latent effects on survival. We found no evidence that tagging resulted in mortality.
Conclusion: External T- bar tags were the most efficient to apply and provided a marking option that was highly visible, had high retention, and had no effects on condition, growth, or survival in Yellow Perch over the 168- d study period.
","language":"English","publisher":"Oxford Academic","doi":"10.1093/najfmt/vqag011","usgsCitation":"Dufour, M.R., Guzzo, F., Keeler, K., and Vandergoot, C.S., 2026, Tag retention, growth, condition, and survival of externally marked Yellow Perch: North American Journal of Fisheries Management, v. 46, no. 2, p. 551-563, https://doi.org/10.1093/najfmt/vqag011.","productDescription":"13 p.","startPage":"551","endPage":"563","ipdsId":"IP-177348","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":503789,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1093/najfmt/vqag011","text":"Publisher Index Page"},{"id":503675,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"2","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Dufour, Mark Richard 0000-0001-6930-7666","orcid":"https://orcid.org/0000-0001-6930-7666","contributorId":291450,"corporation":false,"usgs":true,"family":"Dufour","given":"Mark","email":"","middleInitial":"Richard","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":960649,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Guzzo, Francesco 0000-0003-2374-0514","orcid":"https://orcid.org/0000-0003-2374-0514","contributorId":351294,"corporation":false,"usgs":true,"family":"Guzzo","given":"Francesco","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":960650,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Keeler, Kevin 0000-0002-8118-0060","orcid":"https://orcid.org/0000-0002-8118-0060","contributorId":203484,"corporation":false,"usgs":true,"family":"Keeler","given":"Kevin","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":960651,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vandergoot, Christopher S.","contributorId":351529,"corporation":false,"usgs":false,"family":"Vandergoot","given":"Christopher","middleInitial":"S.","affiliations":[{"id":84005,"text":"Michigan State University/GLATOS","active":true,"usgs":false}],"preferred":false,"id":960652,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70274695,"text":"70274695 - 2026 - Advances and applications of Unoccupied Aerial Systems (UAS) research in landscape ecology","interactions":[],"lastModifiedDate":"2026-04-06T14:55:21.789264","indexId":"70274695","displayToPublicDate":"2026-03-25T07:49:34","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Advances and applications of Unoccupied Aerial Systems (UAS) research in landscape ecology","docAbstract":"Landscape ecologists have long depended on satellite and aerial remote sensing to address questions about landscape pattern and process, structure, and change (Foody 2023). Unoccupied aerial systems/vehicles (UAS/UAV, a.k.a. drones) technology is becoming an increasingly popular research tool in environmental sciences allowing scientists to generate low-cost, high-quality, and high-resolution imagery on demand that can be tailored to specific research questions. While satellite data are of a fixed resolution and temporal interval, UAS offer researchers control and flexibility to design studies and collect data at resolutions and scales that provide ecologically relevant information at finer spatial resolutions (e.g., < 30 cm) than what is currently available from satellite platforms (typically > 3m), thus helping capture objects such as individual plant canopies, micro-topography, and individual animals. Unlike satellites with fixed orbits, UAS can be deployed at more optimal temporal frequencies for ecological monitoring.
We organized the special collection “Advances and Applications of Unoccupied Aerial Systems (UAS) Research in Landscape Ecology” to showcase the many ways that UAS tools and technologies are currently applied to advance landscape ecological research. When we announced the collection in 2023, only 11 papers published in the journal Landscape Ecology used UAS data, which was a notably small number compared to many other general ecology, environmental science and remote sensing journals. In an attempt to understand why UAS were not more widely used in landscape ecology and provide possible solutions, we published a review article (Villarreal et al. 2025) that identified the challenges, knowledge gaps, and obstacles for the adoption of UAS technologies in landscape ecology research. The main issues we identified include: (1) an abundance of UAS methods papers in the existing literature, with comparatively few studies demonstrating how UAS can be applied to address ecological questions; (2) a perceived scale mismatch between the geographic extent of UAS data collection (local) compared to larger study areas (landscapes) and a need to design robust scaling approaches to connect fine-scale UAS data with broader ecological patterns; and (3) a need for improved integration of UAS data with other commonly used remote sensing datasets including historical high resolution aerial imagery. Additionally, researchers new to UAS remote sensing may be discouraged or overwhelmed by the general lack of scientific consensus and standardized protocols for typical tasks such as data collection, vegetation classification, and change detection, as well as restrictive and/or confusing policy, regulatory, and legal issues surrounding UAS operations (Villarreal et al. 2025).
","language":"English","publisher":"Springer Nature","doi":"10.1007/s10980-026-02331-0","usgsCitation":"Villarreal, M.L., Bishop, T.B., Sankey, T.T., and Smith, W.K., 2026, Advances and applications of Unoccupied Aerial Systems (UAS) research in landscape ecology: Landscape Ecology, v. 41, 65, 8 p., https://doi.org/10.1007/s10980-026-02331-0.","productDescription":"65, 8 p.","ipdsId":"IP-185152","costCenters":[{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"links":[{"id":502473,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s10980-026-02331-0","text":"Publisher Index Page"},{"id":502205,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","noUsgsAuthors":false,"publicationDate":"2026-03-25","publicationStatus":"PW","contributors":{"authors":[{"text":"Villarreal, Miguel L. 0000-0003-0720-1422 mvillarreal@usgs.gov","orcid":"https://orcid.org/0000-0003-0720-1422","contributorId":214980,"corporation":false,"usgs":true,"family":"Villarreal","given":"Miguel","email":"mvillarreal@usgs.gov","middleInitial":"L.","affiliations":[{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":958718,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bishop, Tara B.","contributorId":369273,"corporation":false,"usgs":false,"family":"Bishop","given":"Tara","middleInitial":"B.","affiliations":[{"id":40367,"text":"Utah Valley University","active":true,"usgs":false}],"preferred":false,"id":958719,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sankey, Temuulen Ts.","contributorId":369274,"corporation":false,"usgs":false,"family":"Sankey","given":"Temuulen","middleInitial":"Ts.","affiliations":[{"id":12698,"text":"Northern Arizona University","active":true,"usgs":false}],"preferred":false,"id":958720,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, William K.","contributorId":369275,"corporation":false,"usgs":false,"family":"Smith","given":"William","middleInitial":"K.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":958721,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70274285,"text":"dr1218 - 2026 - Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) at the Mojave River Dam, San Bernardino County, California—2025 Data Summary","interactions":[],"lastModifiedDate":"2026-03-25T15:16:39.33281","indexId":"dr1218","displayToPublicDate":"2026-03-25T07:00:00","publicationYear":"2026","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":9318,"text":"Data Report","code":"DR","onlineIssn":"2771-9448","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1218","displayTitle":"Distribution and Abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) at the Mojave River Dam, San Bernardino County, California—2025 Data Summary","title":"Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) at the Mojave River Dam, San Bernardino County, California—2025 Data Summary","docAbstract":"We surveyed for Least Bell’s Vireos (Vireo bellii pusillus; vireo) and Southwestern Willow Flycatchers (Empidonax traillii extimus; flycatcher) at the Mojave River Dam study area near Hesperia, California, in 2025. Four vireo surveys were completed between April 23 and June 26, 2025, and three flycatcher surveys were completed between May 16 and June 26, 2025.
We detected two territorial male vireos, both of which were paired, and one transient vireo. No juvenile vireos were observed during surveys. Vireos were reported in two habitat types: riparian scrub dominated by narrowleaf willow (Salix exigua) or mule fat (Baccharis salicifolia) and willow-cottonwood dominated by red or arroyo willow (Salix laevigata or lasiolepis). One transient willow flycatcher of unknown subspecies was observed in willow-cottonwood habitat dominated by Fremont cottonwood (Populus fremontii).
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/dr1218","programNote":"Ecosystems Mission Area–Species Management Research Program","usgsCitation":"Howell, S.L., and Kus, B.E., 2026, Distribution and abundance of Least Bell’s Vireos (Vireo bellii pusillus) and Southwestern Willow Flycatchers (Empidonax traillii extimus) at the Mojave River Dam, San Bernardino County, California—2025 data summary: U.S. Geological Survey Data Report 1218, 8 p., https://doi.org/10.3133/dr1218.","productDescription":"vi, 8 p.","numberOfPages":"8","onlineOnly":"Y","ipdsId":"IP-182721","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":501431,"rank":5,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/dr/1218/images"},{"id":501430,"rank":4,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/dr/1218/dr1218.XML","linkFileType":{"id":8,"text":"xml"},"description":"DR 1218 XML"},{"id":501429,"rank":3,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/dr1218/full","linkFileType":{"id":5,"text":"html"},"description":"DR 1218 HTML"},{"id":501428,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/dr/1218/dr1218.pdf","text":"Report","size":"5.4 MB","linkFileType":{"id":1,"text":"pdf"},"description":"DR 1218 PDF"},{"id":501427,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/dr/1218/coverthb.jpg"}],"country":"United States","state":"California","county":"San Bernardino County","otherGeospatial":"Mojave River Dam","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.22193446568201,\n 34.372629231592285\n ],\n [\n -117.26951127201511,\n 34.372629231592285\n ],\n [\n -117.26951127201511,\n 34.32314904481471\n ],\n [\n -117.22193446568201,\n 34.32314904481471\n ],\n [\n -117.22193446568201,\n 34.372629231592285\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Western Ecological Research Center
U.S. Geological Survey
3020 State University Drive East
Sacramento, California 95819
Migration is thought to be costly such that challenges faced during migration likely affect how birds migrate through direct selection on migratory behavior. Survival throughout the annual cycle and conditions that affect the survival costs of migration are therefore critical to our understanding of the causes and consequences of migration. Estimating daily survival throughout the annual cycle of migratory birds has only recently become possible. We used over a decade of GPS tracking data from 186 migratory Buteo lagopus to quantify causes of mortality as well as demographic, seasonal, and spatial variation in daily survival and how survival consequences of migration changed during an outbreak of highly pathogenic avian influenza virus. The cost of migration via direct mortality varied between avian influenza and baseline study periods. Surprisingly, mortality risk during typical spring migrations was lower than in all other seasons, but mortality risk during the avian influenza outbreak was higher during both spring and fall migrations. Additionally, we found increased mortality risk in females during the avian influenza outbreak but no sex differences during baseline periods. Hence, the relative cost of migration was altered by the virus. During baseline periods, mortality risk was highest during late fall migration and winter, coinciding with increased anthropogenic-related mortalities at lower latitudes. However, the number of deaths caused by avian influenza (n = 11) in a single year equaled the total number of deaths caused by anthropogenic-related factors (n = 11; primarily collision trauma and persecution) across all 12 study years. Overall, our study highlights how added stressors such as disease outbreaks and anthropogenic factors may exacerbate existing seasonal constraints by directly increasing mortality risk.
","language":"English","publisher":"Nordic Society Oikos","doi":"10.1002/jav.03616","usgsCitation":"Paprocki, N., Kidd, J., and Conway, C.J., 2026, Cost of migration increased during an outbreak of highly pathogenic avian influenza virus: Journal of Avian Biology, v. 2026, no. 2, e03616, 12 p., https://doi.org/10.1002/jav.03616.","productDescription":"e03616, 12 p.","ipdsId":"IP-184143","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":504189,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/jav.03616","text":"Publisher Index Page"},{"id":503963,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -119.13235830742079,\n 34.051610219206324\n ],\n [\n -83.4075671325163,\n 31.97455989703157\n ],\n [\n -71.9618053244041,\n 36.378884780518845\n ],\n [\n -51.3279583202131,\n 47.102405825196826\n ],\n [\n -60.61639235445597,\n 69.08251642248632\n ],\n [\n -73.58348120720501,\n 75.6012254722263\n ],\n [\n -120.1573204427736,\n 80.22448058582967\n ],\n [\n -129.667008135693,\n 72.00987949294188\n ],\n [\n -169.6334732525069,\n 70.88068700335253\n ],\n [\n -168.86366811171357,\n 64.89630104169692\n ],\n [\n -167.77200080735236,\n 58.0662938080217\n ],\n [\n -170.9953070876699,\n 51.60858982544414\n ],\n [\n -148.62255894047334,\n 57.914290721992955\n ],\n [\n -135.08449775745427,\n 54.553326998846785\n ],\n [\n -127.18224152452092,\n 47.7217058670808\n ],\n [\n -125.96834641135626,\n 39.66868629978072\n ],\n [\n -119.13235830742079,\n 34.051610219206324\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"2026","issue":"2","noUsgsAuthors":false,"publicationDate":"2026-03-24","publicationStatus":"PW","contributors":{"authors":[{"text":"Paprocki, Neil","contributorId":355054,"corporation":false,"usgs":false,"family":"Paprocki","given":"Neil","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":960906,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kidd, Jeff W","contributorId":243473,"corporation":false,"usgs":false,"family":"Kidd","given":"Jeff W","affiliations":[],"preferred":false,"id":960907,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conway, Courtney J. 0000-0003-0492-2953 cconway@usgs.gov","orcid":"https://orcid.org/0000-0003-0492-2953","contributorId":2951,"corporation":false,"usgs":true,"family":"Conway","given":"Courtney","email":"cconway@usgs.gov","middleInitial":"J.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":960908,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70275379,"text":"70275379 - 2026 - Changes in spatial distribution and abundance together determine potential for population persistence for greater sage-grouse","interactions":[],"lastModifiedDate":"2026-05-01T15:09:06.584","indexId":"70275379","displayToPublicDate":"2026-03-24T09:58:47","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1399,"text":"Diversity and Distributions","active":true,"publicationSubtype":{"id":10}},"title":"Changes in spatial distribution and abundance together determine potential for population persistence for greater sage-grouse","docAbstract":"Population ecologists often focus on changes in the distribution and abundance of wildlife species, which are useful for trend analyses and status assessments. However, rarely are these responses evaluated simultaneously for a single species, despite their unique contributions to fully assess a species' viability. For example, focusing solely on total abundance can mask important losses in overall distribution within a metapopulation structure that may contribute to long-term population instability that results from the extirpation of small peripheral populations.
Bi-State region of Nevada and California, USA.
We simultaneously evaluated changes in population abundance and distribution for greater sage-grouse (hereafter sage-grouse; Centrocercus urophasianus) within the Bi-State Distinct Population Segment (DPS), a genetically distinct and isolated population straddling the border of Nevada and California. We combined population counts, demographic data, and information on space use from marked individuals to evaluate changes in population distribution and abundance over three time periods that corresponded to the three most recent population nadirs (1995–2019, 2002–2019 and 2008–2019).
The Bi-State DPS exhibited evidence of ~1.2%–2.5% declines annually, over the short/medium-term (1995–2019; λ^ = 0.987, 95% CRI: 0.970–0.999), short-term (2002–2019; λ^ = 0.975, 95% CRI: 0.963–0.985) and recent-term (2008–2019; λ^ = 0.988, 95% CRI: 0.973–1.001). Since 1995, the spatial distribution of sage-grouse abundance in the Bi-State DPS shifted amongst subpopulations, with peripheral subpopulations suffering the largest declines.
Gains in abundance and distribution amongst expanding subpopulations did not offset losses in the remaining subpopulations, with a net loss in occupied distribution of 156 km2 since 1995. Reductions in spatial distribution could have implications for metapopulation persistence as peripheral populations become more vulnerable to stochastic events, which would not have been apparent from the evaluation of overall metapopulation abundance on its own.
","language":"English","publisher":"Wiley","doi":"10.1111/ddi.70092","usgsCitation":"Milligan, M.C., Coates, P., Prochazka, B.G., Chenaille, M.P., O’Neil, S.T., Mathews, S.R., Small, J.R., Miller, K., and Abele, S., 2026, Changes in spatial distribution and abundance together determine potential for population persistence for greater sage-grouse: Diversity and Distributions, v. 32, no. 3, e70092, 15 p., https://doi.org/10.1111/ddi.70092.","productDescription":"e70092, 15 p.","ipdsId":"IP-158428","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":504165,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/ddi.70092","text":"Publisher Index Page"},{"id":503890,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Nevada","volume":"32","issue":"3","noUsgsAuthors":false,"publicationDate":"2026-03-24","publicationStatus":"PW","contributors":{"authors":[{"text":"Milligan, Megan C. 0000-0001-8466-7803","orcid":"https://orcid.org/0000-0001-8466-7803","contributorId":296042,"corporation":false,"usgs":true,"family":"Milligan","given":"Megan","email":"","middleInitial":"C.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":960785,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Coates, Peter S. 0000-0003-2672-9994","orcid":"https://orcid.org/0000-0003-2672-9994","contributorId":352181,"corporation":false,"usgs":true,"family":"Coates","given":"Peter S.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":960786,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Prochazka, Brian G. 0000-0001-7270-5550 bprochazka@usgs.gov","orcid":"https://orcid.org/0000-0001-7270-5550","contributorId":210597,"corporation":false,"usgs":true,"family":"Prochazka","given":"Brian","email":"bprochazka@usgs.gov","middleInitial":"G.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":960787,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chenaille, Michael P. 0000-0003-3387-7899 mchenaille@usgs.gov","orcid":"https://orcid.org/0000-0003-3387-7899","contributorId":194661,"corporation":false,"usgs":true,"family":"Chenaille","given":"Michael","email":"mchenaille@usgs.gov","middleInitial":"P.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":960788,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"O’Neil, Shawn T. 0000-0002-0899-5220","orcid":"https://orcid.org/0000-0002-0899-5220","contributorId":206589,"corporation":false,"usgs":true,"family":"O’Neil","given":"Shawn","email":"","middleInitial":"T.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":960789,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Mathews, Steven R.","contributorId":370798,"corporation":false,"usgs":false,"family":"Mathews","given":"Steven","middleInitial":"R.","affiliations":[{"id":37814,"text":"Former USGS","active":true,"usgs":false}],"preferred":false,"id":960790,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Small, Justin R.","contributorId":370799,"corporation":false,"usgs":false,"family":"Small","given":"Justin","middleInitial":"R.","affiliations":[{"id":85566,"text":"NDOW","active":true,"usgs":false}],"preferred":false,"id":960791,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Miller, Katherine","contributorId":259248,"corporation":false,"usgs":false,"family":"Miller","given":"Katherine","email":"","affiliations":[{"id":6952,"text":"California Department of Fish and Wildlife","active":true,"usgs":false}],"preferred":true,"id":960792,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Abele, Steve","contributorId":299010,"corporation":false,"usgs":false,"family":"Abele","given":"Steve","email":"","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":true,"id":960793,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70275539,"text":"70275539 - 2026 - Leveraging local species data, a global database, and an occupancy model to explore bee–plant interactions","interactions":[],"lastModifiedDate":"2026-05-04T17:06:17.889447","indexId":"70275539","displayToPublicDate":"2026-03-24T09:58:15","publicationYear":"2026","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":"Leveraging local species data, a global database, and an occupancy model to explore bee–plant interactions","docAbstract":"Global declines in bee populations are threatening the ecosystem services they provide, including pollination. Many bee–plant interactions are understudied, producing an incomplete understanding of resulting ecosystem-level vulnerabilities. The last decade has generated a wealth of opportunistic data originating from natural history collection records, published ecological datasets, and citizen/community science initiatives in online databases such as Global Biotic Interactions (GloBI). Here, we explore hypotheses related to bee–plant interactions and detection processes using the GloBI database, curated checklists of bee and flowering plant species, and an occupancy model. We hypothesized that larger, social bees would visit a larger number of plant species, while smaller, solitary bees would visit fewer. We also predicted that flowers with open, bowl-like shapes would attract a greater diversity of bee visitors compared to closed shapes. Further, we hypothesized that both floral and bee traits, such as bright colors and conspicuous patterns, would increase detectability, and that different data collection methods would vary in their ability to capture bee–plant interactions. Lastly, we hypothesized that the interaction network generated by the output of the occupancy model, which accounted for imperfect bee–plant detection, would yield more interactions, thereby increasing measures of evenness and decreasing nestedness and specialization, as compared to the network generated from recorded interaction data. We found that smaller bees exhibited higher probabilities of plant interactions than larger bees, but we did not find evidence that bee sociality influenced the probability of interacting with plants. We found that blue flowers and closed (not-bowl-shaped) flowers had higher probabilities of bee-plant interaction than other flower colors or bowl-shaped flowers, respectively. We also found that larger bee size, blue flowers, bowl shapes, and community science sources were associated with higher detection probabilities of bee–plant interactions. Lastly, the interaction network generated by the occupancy model output showed higher levels of evenness, nestedness, and connectance than the network generated by the GloBI data. Our study is among the first to utilize occupancy modeling to directly model species' interactions, leverage aggregated, open-source databases and expert checklists, and highlight the influence of detection and collection biases on our understanding of ecological interactions.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/eap.70221","usgsCitation":"Lee, M.J., DiRenzo, G.V., Diao, C., and Seltmann, K.C., 2026, Leveraging local species data, a global database, and an occupancy model to explore bee–plant interactions: Ecological Applications, v. 36, no. 2, e70221, 20 p., https://doi.org/10.1002/eap.70221.","productDescription":"e70221, 20 p.","ipdsId":"IP-150867","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":504184,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/eap.70221","text":"Publisher Index Page"},{"id":503954,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Santa Cruz Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -119.93350233953383,\n 34.08271906479452\n ],\n [\n -119.93350233953383,\n 33.94903535628485\n ],\n [\n -119.51877742715749,\n 33.94903535628485\n ],\n [\n -119.51877742715749,\n 34.08271906479452\n ],\n [\n -119.93350233953383,\n 34.08271906479452\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"36","issue":"2","noUsgsAuthors":false,"publicationDate":"2026-03-24","publicationStatus":"PW","contributors":{"authors":[{"text":"Lee, Michelle J.","contributorId":370972,"corporation":false,"usgs":false,"family":"Lee","given":"Michelle","middleInitial":"J.","affiliations":[{"id":16936,"text":"University of California Santa Barbara","active":true,"usgs":false}],"preferred":false,"id":960832,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DiRenzo, Graziella Vittoria 0000-0001-5264-4762","orcid":"https://orcid.org/0000-0001-5264-4762","contributorId":243404,"corporation":false,"usgs":true,"family":"DiRenzo","given":"Graziella","email":"","middleInitial":"Vittoria","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":960833,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Diao, Chengyi","contributorId":371081,"corporation":false,"usgs":false,"family":"Diao","given":"Chengyi","affiliations":[],"preferred":false,"id":960983,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Seltmann, Katja C.","contributorId":370974,"corporation":false,"usgs":false,"family":"Seltmann","given":"Katja","middleInitial":"C.","affiliations":[{"id":16936,"text":"University of California Santa Barbara","active":true,"usgs":false}],"preferred":false,"id":960835,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70275221,"text":"70275221 - 2026 - Compact seismicity bursts have different characteristics from regional seismicity","interactions":[],"lastModifiedDate":"2026-04-23T14:29:24.443954","indexId":"70275221","displayToPublicDate":"2026-03-24T09:18:03","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7501,"text":"JGR Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Compact seismicity bursts have different characteristics from regional seismicity","docAbstract":"Earthquakes tend to cluster, developing into sequences driven by stress perturbations and transient fault-zone processes. Depending on the driving process, earthquake sequences show differing behaviors. This variability challenges our ability to observe or distinguish these driving processes in high resolution. Here we systematically identify seismicity bursts throughout southern California using new statistical methods and examine their causes with other independent geophysical observations. Seismicity bursts are defined as statistically significant seismicity rate anomalies. Our approach has the advantage of being data driven, depending on few earthquake occurrence assumptions. We find abundant seismicity bursts across southern California, most frequently occurring along the San Jacinto Fault and in the Salton Sea and Coso geothermal fields. These seismicity bursts are highly compact in space and time, often encompassed by a 5 km radius and have durations less than 10 hr. Many of the seismicity bursts have their largest earthquake near the beginning of the sequence, but the largest earthquake is usually not an obvious mainshock. We utilize a variety of independent geophysical data sets to analyze the characteristics of the seismicity bursts, finding that the seismicity bursts have low b-values, low spectral stress drops, and varied stress ratios compared to regional seismicity. These differences suggest that seismicity bursts are driven by transient processes acting frequently across fault networks.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2025JB032917","usgsCitation":"DeSalvio, N., Fan, W., Barbour, A.J., and Hardebeck, J.L., 2026, Compact seismicity bursts have different characteristics from regional seismicity: JGR Solid Earth, v. 131, no. 3, e2025JB032917, 22 p., https://doi.org/10.1029/2025JB032917.","productDescription":"e2025JB032917, 22 p.","ipdsId":"IP-179229","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":503338,"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 \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121,\n 37\n ],\n [\n -115,\n 37\n ],\n [\n -115,\n 32\n ],\n [\n -121,\n 32\n ],\n [\n -121,\n 37\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"131","issue":"3","noUsgsAuthors":false,"publicationDate":"2026-03-24","publicationStatus":"PW","contributors":{"authors":[{"text":"DeSalvio, Nicolas","contributorId":352016,"corporation":false,"usgs":false,"family":"DeSalvio","given":"Nicolas","affiliations":[{"id":25459,"text":"SIO","active":true,"usgs":false}],"preferred":false,"id":960165,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fan, Wenyuan","contributorId":174007,"corporation":false,"usgs":false,"family":"Fan","given":"Wenyuan","email":"","affiliations":[{"id":6728,"text":"Scripps Inst Oceanography","active":true,"usgs":false}],"preferred":false,"id":960166,"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":960167,"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":960168,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70276375,"text":"70276375 - 2026 - Tidal wetland soil carbon accumulation rates for coastal California","interactions":[],"lastModifiedDate":"2026-06-02T14:13:42.244843","indexId":"70276375","displayToPublicDate":"2026-03-24T09:09:05","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3907,"text":"Scientific Data","active":true,"publicationSubtype":{"id":10}},"title":"Tidal wetland soil carbon accumulation rates for coastal California","docAbstract":"Carbon stock and carbon accumulation rate data are vital to multiple aspects of tidal wetland conservation and restoration policy. In California, USA tidal soil data are rare outside of the San Francisco Bay and Sacramento Delta regions, despite the differing conditions experienced by the outer coastline. Here we provide carbon stocks and decadal-to-centennial-scale carbon accumulation rate calculations. This dataset presents 83 soil depth profiles from 15 sites, with 58 cores from 12 tidal wetland sites analyzed for carbon stock, mostly from the outer coastline of California. Mean organic matter content was 11%, and stocks estimated to 1 meter depth ranged from 15.4 to 44.7 kgC m−2. Organic matter content generally declined asymptotically with depth. Carbon accumulation rates ranged from 39.2 to 130.0 gC m−2 yr−1. Neither carbon stock nor carbon accumulation rates were notably different from global average values. Data at this level of reporting are vital for establishing restoration baselines, informing greenhouse gas mitigation planning, and projecting future ecosystem response to sea-level rise.
","language":"English","publisher":"Nature","doi":"10.1038/s41597-026-06935-8","usgsCitation":"Homquist, J.R., Brown, L.N., Fard, E., Ambrose, R.F., Hargan, K.E., Hammond, D.E., Kemnitz, N.J., Smol, J.P., Thorne, K., and MacDonald, G.M., 2026, Tidal wetland soil carbon accumulation rates for coastal California: Scientific Data, v. 13, 733, 11 p., https://doi.org/10.1038/s41597-026-06935-8.","productDescription":"733, 11 p.","ipdsId":"IP-183445","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":505045,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1038/s41597-026-06935-8","text":"Publisher Index Page"},{"id":504948,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"coastal California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -117.7794573,\n 32.5268953\n ],\n [\n -116.7328649,\n 32.6789082\n ],\n [\n -118.7177816,\n 34.6610454\n ],\n [\n -120.0530892,\n 34.8685771\n ],\n [\n -121.4244861,\n 36.6837564\n ],\n [\n -122.2906316,\n 38.4005445\n ],\n [\n -123.9507437,\n 40.463016\n ],\n [\n -123.8424571,\n 41.9561618\n ],\n [\n -124.6003344,\n 42.0098155\n ],\n [\n -124.7807813,\n 40.1051087\n ],\n [\n -123.8785465,\n 38.7391313\n ],\n [\n -122.5793283,\n 36.7126829\n ],\n [\n -120.8470374,\n 34.3338619\n ],\n [\n -119.8365343,\n 33.4952897\n ],\n [\n -117.7794573,\n 32.5268953\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"13","noUsgsAuthors":false,"publicationDate":"2026-03-24","publicationStatus":"PW","contributors":{"authors":[{"text":"Homquist, James R.","contributorId":371661,"corporation":false,"usgs":false,"family":"Homquist","given":"James","middleInitial":"R.","affiliations":[{"id":13510,"text":"Smithsonian Environmental Research Center","active":true,"usgs":false}],"preferred":false,"id":962257,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brown, Lauren N.","contributorId":371662,"corporation":false,"usgs":false,"family":"Brown","given":"Lauren","middleInitial":"N.","affiliations":[{"id":13587,"text":"Bowling Green State University","active":true,"usgs":false}],"preferred":false,"id":962258,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fard, Elizabeth","contributorId":331463,"corporation":false,"usgs":false,"family":"Fard","given":"Elizabeth","email":"","affiliations":[{"id":13399,"text":"UCLA","active":true,"usgs":false}],"preferred":false,"id":962259,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ambrose, Richard F.","contributorId":371663,"corporation":false,"usgs":false,"family":"Ambrose","given":"Richard","middleInitial":"F.","affiliations":[{"id":13399,"text":"UCLA","active":true,"usgs":false}],"preferred":false,"id":962260,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hargan, Kathryn E.","contributorId":371664,"corporation":false,"usgs":false,"family":"Hargan","given":"Kathryn","middleInitial":"E.","affiliations":[{"id":26965,"text":"Memorial University of Newfoundland","active":true,"usgs":false}],"preferred":false,"id":962261,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hammond, Douglas E.","contributorId":371665,"corporation":false,"usgs":false,"family":"Hammond","given":"Douglas","middleInitial":"E.","affiliations":[{"id":13249,"text":"University of Southern California","active":true,"usgs":false}],"preferred":false,"id":962262,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kemnitz, Nathaniel J.","contributorId":371666,"corporation":false,"usgs":false,"family":"Kemnitz","given":"Nathaniel","middleInitial":"J.","affiliations":[{"id":88196,"text":"Fugro U.S.A. Marine","active":true,"usgs":false}],"preferred":false,"id":962263,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Smol, John P.","contributorId":371668,"corporation":false,"usgs":false,"family":"Smol","given":"John","middleInitial":"P.","affiliations":[{"id":34006,"text":"Queen’s University","active":true,"usgs":false}],"preferred":false,"id":962264,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Thorne, Karen 0000-0002-1381-0657","orcid":"https://orcid.org/0000-0002-1381-0657","contributorId":371671,"corporation":false,"usgs":false,"family":"Thorne","given":"Karen","affiliations":[{"id":7065,"text":"USGS emeritus","active":true,"usgs":false}],"preferred":false,"id":962265,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"MacDonald, Glen M.","contributorId":371673,"corporation":false,"usgs":false,"family":"MacDonald","given":"Glen","middleInitial":"M.","affiliations":[{"id":13399,"text":"UCLA","active":true,"usgs":false}],"preferred":false,"id":962266,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70274328,"text":"70274328 - 2026 - Rapid seismic and infrasound assessment of large landslides: A case study from Denali National Park and Preserve (Alaska)","interactions":[],"lastModifiedDate":"2026-03-26T20:12:07.266266","indexId":"70274328","displayToPublicDate":"2026-03-23T13:03:56","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5739,"text":"Journal of Geophysical Research: Earth Surface","onlineIssn":"2169-9011","active":true,"publicationSubtype":{"id":10}},"title":"Rapid seismic and infrasound assessment of large landslides: A case study from Denali National Park and Preserve (Alaska)","docAbstract":"Large, rapid landslides are a global hazard that can occur in remote, mountainous areas. Eyewitness reports of landslides and satellite imagery can often be limited or delayed, particularly during inclement weather. However, landslide-generated seismic and infrasound (low-frequency atmospheric sound) waves can be remotely detected in near real-time. This information can significantly expedite characterization and possible landslide response activities. Here, we highlight these capabilities using a > 4 million m³ ice–rock avalanche in Denali National Park and Preserve (Alaska). This event was detected via a landslide-specific seismic location and volume estimation algorithm deployed in Alaska, and — notably — by standard earthquake monitoring systems. Following rapid detection of this event, we combined its seismic and infrasound dataset with optical, synthetic aperture radar, and oblique aerial imagery, multitemporal digital elevation models, and a numerical flow model to reconstruct its failure timeline and dynamics. We apply array processing to infrasound signals traveling > 250 km and find that two precursory events occurred minutes prior to the main failure. We use long-period seismic signals to infer the force exerted by the landslide on the Earth and constrain the rheological parameters of our numerical flow simulation with this result and deposit morphology. The main failure produced a steeply-dipping impulsive initial downward force and reached speeds exceeding 60 m/s. This impulsive force generated relatively strong seismic body waves, which contributed to the earthquake system detection. This large, remote Alaska landslide underscores the key value of seismic and infrasound analysis for rapid landslide assessment and motivates efforts to further operationalize these approaches.","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2025JF008577","usgsCitation":"Toney, L., West, M., Karasözen, E., Capps, D.M., Collins, E.A., Allstadt, K.E., Pursley, J., McFarlin, H., Mangeney, A., Fee, D., Staley, D.M., Haney, M.M., Lyons, J.J., and Bellini, J., 2026, Rapid seismic and infrasound assessment of large landslides: A case study from Denali National Park and Preserve (Alaska): Journal of Geophysical Research: Earth Surface, v. 131, no. 3, e2025JF008577, 21 p., https://doi.org/10.1029/2025JF008577.","productDescription":"e2025JF008577, 21 p.","ipdsId":"IP-179322","costCenters":[{"id":78941,"text":"Geologic Hazards Science Center - Landslides / Earthquake Geology","active":true,"usgs":true}],"links":[{"id":502039,"rank":1,"type":{"id":40,"text":"Open 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Earthquake Center, University of Alaska-Fairbanks","active":true,"usgs":false}],"preferred":false,"id":957895,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Capps, Denny M","contributorId":222771,"corporation":false,"usgs":false,"family":"Capps","given":"Denny","email":"","middleInitial":"M","affiliations":[{"id":40598,"text":"Denali National Park, National Park Service","active":true,"usgs":false}],"preferred":false,"id":957896,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Collins, Elaine A. 0000-0002-5475-4022","orcid":"https://orcid.org/0000-0002-5475-4022","contributorId":270255,"corporation":false,"usgs":true,"family":"Collins","given":"Elaine","middleInitial":"A.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":957897,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Allstadt, Kate E. 0000-0003-4977-5248","orcid":"https://orcid.org/0000-0003-4977-5248","contributorId":138704,"corporation":false,"usgs":true,"family":"Allstadt","given":"Kate","email":"","middleInitial":"E.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":957898,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pursley, Jana 0000-0002-7472-9668","orcid":"https://orcid.org/0000-0002-7472-9668","contributorId":269689,"corporation":false,"usgs":true,"family":"Pursley","given":"Jana","email":"","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":957899,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"McFarlin, Heather","contributorId":367929,"corporation":false,"usgs":false,"family":"McFarlin","given":"Heather","affiliations":[{"id":87644,"text":"Alaska Earthquake Center, 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jlyons@usgs.gov","orcid":"https://orcid.org/0000-0001-5409-1698","contributorId":5394,"corporation":false,"usgs":true,"family":"Lyons","given":"John","email":"jlyons@usgs.gov","middleInitial":"J.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"preferred":true,"id":957905,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Bellini, John 0000-0002-9635-8730","orcid":"https://orcid.org/0000-0002-9635-8730","contributorId":269687,"corporation":false,"usgs":true,"family":"Bellini","given":"John","email":"","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":957906,"contributorType":{"id":1,"text":"Authors"},"rank":14}]}} ,{"id":70275614,"text":"70275614 - 2026 - Population trends of dabbling ducks wintering in the alluvial valleys of Arkansas and Mississippi","interactions":[],"lastModifiedDate":"2026-05-19T15:50:12.562622","indexId":"70275614","displayToPublicDate":"2026-03-23T09:41:43","publicationYear":"2026","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3766,"text":"Wildlife Biology","active":true,"publicationSubtype":{"id":10}},"title":"Population trends of dabbling ducks wintering in the alluvial valleys of Arkansas and Mississippi","docAbstract":"Population abundances, distributions, and compositions across a diversity of taxa are changing, partly as a consequence of human-induced global modifications. Although linking population fluctuations to anthropogenic-induced alterations can be challenging, it is increasingly clear that long-term monitoring is critical to understanding changing populations. For waterfowl, concerns over recent declines in breeding populations or possible redistribution from using traditional wintering grounds for some species support continued monitoring of regional populations. To further understand population trends on traditional wintering grounds, we examined abundance trends over time within the Mississippi and Arkansas portions of the Mississippi Alluvial Valley, using two sources of data: systematic aerial surveys and citizen science data. We found great annual variability in rates of population change (r ranging from −1.04 to 0.71) in five species of dabbling ducks. Despite this annual variation, green-winged teal Anas carolinensis, mallards Anas platyrhynchos, northern pintail Anas acuta, and northern shoveler Spatula clypeata showed no significant trends in population size over approximately 15 years in Mississippi and Arkansas, but gadwall Mareca strepera showed a 4% annual increase in the citizen science data for Mississippi. Despite substantial variation in annual abundance, the timing of peak abundance was remarkably consistent from year to year, with peaks typically occurring in January. Our results demonstrate that autumn–winter population numbers of dabbling ducks can be quite variable interannually, but they lack a consistent trend in the Mississippi Alluvial Valley during the past two decades. Going forward, investigation into how citizen science data could be leveraged to increase the precision of trends within this landscape might be of benefit, and sampling efforts could perhaps be added towards the latter portion of the wintering period. As populations continue to adjust in a changing world, maintaining monitoring surveys in regions important to waterfowl is an effective and important means of evaluating trends.
","language":"English","publisher":"Nordic Society Oikos","doi":"10.1002/wlb3.01572","usgsCitation":"Boudreau, M.R., Havens, H., Leach, B., Naylor, L., Callicutt, J.T., Pearse, A.T., and Davis, J.B., 2026, Population trends of dabbling ducks wintering in the alluvial valleys of Arkansas and Mississippi: Wildlife Biology, v. 2026, no. 3, e01572, 13 p., https://doi.org/10.1002/wlb3.01572.","productDescription":"e01572, 13 p.","ipdsId":"IP-179403","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":504002,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":504201,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/wlb3.01572","text":"Publisher Index Page"}],"country":"United States","state":"Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee","otherGeospatial":"Mississippi Alluvial Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.81486038859579,\n 40.41852400825991\n ],\n [\n -91.81486038859579,\n 29.387847147895826\n ],\n [\n -89.06741949863552,\n 29.387847147895826\n ],\n [\n -89.06741949863552,\n 40.41852400825991\n ],\n [\n -91.81486038859579,\n 40.41852400825991\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"2026","issue":"3","noUsgsAuthors":false,"publicationDate":"2026-03-23","publicationStatus":"PW","contributors":{"authors":[{"text":"Boudreau, Melanie R. 0000-0002-6280-5598","orcid":"https://orcid.org/0000-0002-6280-5598","contributorId":371124,"corporation":false,"usgs":false,"family":"Boudreau","given":"Melanie","middleInitial":"R.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":961067,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Havens, Houston","contributorId":371125,"corporation":false,"usgs":false,"family":"Havens","given":"Houston","affiliations":[{"id":78821,"text":"Mississippi Department of Wildlife, Fisheries, and Parks","active":true,"usgs":false}],"preferred":false,"id":961068,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Leach, Brett","contributorId":356397,"corporation":false,"usgs":false,"family":"Leach","given":"Brett","affiliations":[{"id":12717,"text":"Louisiana Department of Wildlife and Fisheries","active":true,"usgs":false}],"preferred":false,"id":961069,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Naylor, Luke W.","contributorId":351070,"corporation":false,"usgs":false,"family":"Naylor","given":"Luke W.","affiliations":[{"id":37007,"text":"Arkansas Game and Fish Commission","active":true,"usgs":false}],"preferred":false,"id":961070,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Callicutt, James T.","contributorId":371126,"corporation":false,"usgs":false,"family":"Callicutt","given":"James","middleInitial":"T.","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":961071,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pearse, Aaron T. 0000-0002-6137-1556 apearse@usgs.gov","orcid":"https://orcid.org/0000-0002-6137-1556","contributorId":1772,"corporation":false,"usgs":true,"family":"Pearse","given":"Aaron","email":"apearse@usgs.gov","middleInitial":"T.","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":961072,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Davis, J. Brian 0000-0002-2598-3192","orcid":"https://orcid.org/0000-0002-2598-3192","contributorId":371127,"corporation":false,"usgs":false,"family":"Davis","given":"J.","middleInitial":"Brian","affiliations":[{"id":17848,"text":"Mississippi State University","active":true,"usgs":false}],"preferred":false,"id":961073,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70274296,"text":"70274296 - 2026 - Decadal shifts in groundwater age detected by environmental tracers across California, USA","interactions":[],"lastModifiedDate":"2026-03-24T15:57:13.026731","indexId":"70274296","displayToPublicDate":"2026-03-23T08:53:06","publicationYear":"2026","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}},"title":"Decadal shifts in groundwater age detected by environmental tracers across California, USA","docAbstract":"Groundwater age offers important insight into recharge, storage, and contamination risk. Although models predict age changes can be driven by pumping and climate variability, direct observational evidence remains limited. Here, we analyzed paired environmental tracer suites (tritium, carbon-14, and tritiogenic helium-3) collected a decade apart from 268 wells across California to assess the prevalence of groundwater age transience. Travel-time distribution models and statistical tests indicated age transience at 29% of sites, occurring most often in agricultural regions, such as the San Joaquin Valley and Southern Coast Ranges, where large carbon-14 changes coincided with substantial nitrate and chloride shifts. Sites with tritiogenic helium-3 data showed more frequent age transience, underscoring the value of multi-tracer data sets. These results provide the first regional evidence of widespread groundwater age change and a method for detecting changing water balances with implications for groundwater sustainability and water quality.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2025GL119794","usgsCitation":"Jurgens, B.C., and Levy, Z.F., 2026, Decadal shifts in groundwater age detected by environmental tracers across California, USA: Geophysical Research Letters, v. 53, no. 6, e2025GL119794, 12 p., https://doi.org/10.1029/2025GL119794.","productDescription":"e2025GL119794, 12 p.","ipdsId":"IP-151777","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":501677,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2025gl119794","text":"Publisher Index Page"},{"id":501458,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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