The purpose of this report is to provide the Marine Corps with an annual summary of the distribution, abundance, and breeding activity of the endangered Southwestern Willow Flycatcher (Empidonax traillii extimus; flycatcher) at Marine Corps Base Camp Pendleton (MCBCP or “Base”). Surveys for the flycatcher were conducted on Base between May 8 and July 24, 2024. All of MCBCP’s historically occupied riparian habitat (core survey area) was surveyed for flycatchers in 2024. None of the non-core survey areas were surveyed in 2024.
Three transient Willow Flycatchers of unknown subspecies were observed on two of the five drainages surveyed in 2024, the Santa Margarita River and San Mateo Creek. No Willow Flycatchers were detected at Fallbrook, Las Flores, or Pilgrim Creeks. Transients in 2024 occurred in riparian scrub habitat, dominated by mule fat (Baccharis salicifolia). Exotic vegetation, primarily poison hemlock (Conium maculatum), was present in all flycatcher locations. None of the transient flycatchers were banded.
In 2024, the resident Southwestern Willow Flycatcher population on Base consisted of one unpaired female occupying one territory in the Air Station breeding area along the Santa Margarita River. No territorial males were observed in 2024. The resident flycatcher territory was located in mixed willow riparian habitat, dominated by arroyo or red willow (Salix lasiolepis or S. laevigata). The female flycatcher was originally banded as a nestling in 2020 at MCBCP, making her 4 years old in 2024.
The resident female flycatcher returned to the same breeding area and territory she occupied in 2023. Nesting was initiated in late May and continued into early August. Three nesting attempts were documented; all were unsuccessful as a result of depredation and presumed infertile eggs. No instances of Brown-headed Cowbird (Molothrus ater) parasitism were observed. The flycatcher nests were placed in two native plants, sandbar willow (S. exigua) and stinging nettle (Urtica dioica).
Two measures were initiated in recent years to attract and retain breeding flycatchers on MCBCP: a conspecific attraction playback study (initiated in 2018) and an artificial seep study (initiated in 2019); both were repeated annually through 2024. The one resident flycatcher (female) detected in 2024 occupied a territory near an automated playback unit, and nested 5 meters from an artificial seep output.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20251023","collaboration":"Prepared in cooperation with Assistant Chief of Staff, Environmental Security, Marine Corps Base Camp Pendleton","programNote":"Ecosystems Mission Area—Species Management Research Program","usgsCitation":"Howell, S.L., and Kus, B.E., 2025, Distribution, abundance, and breeding activities of the Southwestern Willow Flycatcher at Marine Corps Base Camp Pendleton, California—2024 annual report: U.S. Geological Survey Open-File\nReport 2025–1023, 26 p., https://doi.org/10.3133/ofr20251023.","productDescription":"vi, 26 p.","onlineOnly":"Y","ipdsId":"IP-175198","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":490243,"rank":5,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/of/2025/1023/ofr20251023.XML"},{"id":490242,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/of/2025/1023/images"},{"id":490241,"rank":3,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/ofr20251023/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"OFR 2025-1023"},{"id":490240,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2025/1023/ofr20251023.pdf","text":"Report","size":"8.7 MB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2025-1023"},{"id":490239,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2025/1023/coverthb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Marine Corps Base Camp Pendleton","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -117.58338003323524,\n 33.45345643512407\n ],\n [\n -117.60222726717006,\n 33.386233650795276\n ],\n [\n -117.48331835489097,\n 33.30585564997955\n ],\n [\n -117.39614054579035,\n 33.19810587550057\n ],\n [\n -117.26283920032485,\n 33.29512730850755\n ],\n [\n -117.24244991997723,\n 33.33051403790782\n ],\n [\n -117.23302630300994,\n 33.410559433022755\n ],\n [\n -117.4911309974352,\n 33.508615342567545\n ],\n [\n -117.58338003323524,\n 33.45345643512407\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, Western Ecological Research Center
U.S. Geological Survey
3020 State University Drive East
Sacramento, California 95819
Global change is expected to expand and shrink species' distributions in complex ways beyond just retraction at warm edges and expansion at cool ones. Detecting these changes is complicated by the need for robust baseline data for comparison. For instance, gaps in species' distributions may reflect long-standing patterns, recent shifts, or merely insufficient sampling effort. We investigated an apparent gap in the distribution of the American pika, Ochotona princeps, along the North American Sierra Nevada. Historical records from this region are sparse, with ~100 km separating previously documented pika-occupied sites. Surveys during 2014–2023 confirmed that the gap is currently unoccupied by pikas, and evidence of past occurrence indicates that the gap has expanded over time, likely due to contemporary global change. Sites lacking evidence of past pika occurrence were climatically and geographically more distant from sites with signs of recent (former) occurrence and currently occupied sites. Formerly and currently occupied sites were partially climatically distinct, suggesting either metapopulation-like dynamics or an extinction debt that may eventually result in further population losses at the edge of suitable climate space. The Feather River gap aligns with one of several “low points” in the otherwise continuous boreal-like conditions spanning the Cascade Range and Sierra Nevada and is coincident with discontinuities in ranges of other mammals. These results highlight the potential for climate-driven fragmentation and range retraction in regions considered climatically and geographically interior to a species' overall distribution.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/ecs2.70223","usgsCitation":"Beever, E.A., Smith, A., Wright, D.H., Rickman, T., Gerraty, F.D., Stewart, J., Gill, A.M., Klingler, K., and Robinson, M.M., 2025, Expanding barriers: Impassable gaps interior to distribution of an isolated mountain-dwelling species: Ecosphere, v. 16, no. 6, e70223, 19 p., https://doi.org/10.1002/ecs2.70223.","productDescription":"e70223, 19 p.","ipdsId":"IP-167945","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":491309,"rank":1,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P13Y6GCE","text":"USGS data release","linkHelpText":"Ordinal-occurrence states of American pikas in the northern Sierra Nevada and southern Cascade Range from surveys during 2014-2019"},{"id":490992,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/ecs2.70223","text":"Publisher Index Page"},{"id":490917,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"southern Cascade Range, northern Sierra Nevada","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -123.53062851604219,\n 41.27490624787072\n ],\n [\n -123.53062851604219,\n 38.356833712700904\n ],\n [\n -119.69929563366605,\n 38.356833712700904\n ],\n [\n -119.69929563366605,\n 41.27490624787072\n ],\n [\n -123.53062851604219,\n 41.27490624787072\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"16","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Beever, Erik A. 0000-0002-9369-486X ebeever@usgs.gov","orcid":"https://orcid.org/0000-0002-9369-486X","contributorId":2934,"corporation":false,"usgs":true,"family":"Beever","given":"Erik","email":"ebeever@usgs.gov","middleInitial":"A.","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":940656,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Adam B.","contributorId":328715,"corporation":false,"usgs":false,"family":"Smith","given":"Adam B.","affiliations":[{"id":38790,"text":"Missouri Botanical Garden","active":true,"usgs":false}],"preferred":false,"id":940657,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wright, David H.","contributorId":328678,"corporation":false,"usgs":false,"family":"Wright","given":"David","email":"","middleInitial":"H.","affiliations":[{"id":78452,"text":"CA Dept. of Fish & Wildlife HQ, Sacramento","active":true,"usgs":false}],"preferred":false,"id":940658,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rickman, Tom","contributorId":174798,"corporation":false,"usgs":false,"family":"Rickman","given":"Tom","email":"","affiliations":[],"preferred":false,"id":940659,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gerraty, Francis D.","contributorId":328697,"corporation":false,"usgs":false,"family":"Gerraty","given":"Francis","email":"","middleInitial":"D.","affiliations":[{"id":34029,"text":"U.C. Santa Barbara","active":true,"usgs":false}],"preferred":false,"id":940660,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stewart, Joseph A.E.","contributorId":357063,"corporation":false,"usgs":false,"family":"Stewart","given":"Joseph A.E.","affiliations":[{"id":85319,"text":"Institute for the Study of Ecological and Evolutionary Climate Impacts, University of California-Santa Cruz","active":true,"usgs":false}],"preferred":false,"id":940661,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gill, Alisha M.","contributorId":328679,"corporation":false,"usgs":false,"family":"Gill","given":"Alisha","email":"","middleInitial":"M.","affiliations":[{"id":78453,"text":"University of Guam Marine Laboratory","active":true,"usgs":false}],"preferred":false,"id":940662,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Klingler, Kelly","contributorId":150149,"corporation":false,"usgs":false,"family":"Klingler","given":"Kelly","affiliations":[{"id":17922,"text":"Program in Ecology, Evolution, and Conservation Biology, University of Nevada, Reno,","active":true,"usgs":false}],"preferred":false,"id":940663,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Robinson, Megan M.","contributorId":328709,"corporation":false,"usgs":false,"family":"Robinson","given":"Megan","email":"","middleInitial":"M.","affiliations":[{"id":27368,"text":"University of Zurich","active":true,"usgs":false}],"preferred":false,"id":940664,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70268875,"text":"70268875 - 2025 - Status and trends of forest bird populations at Hakalau Forest National Wildlife Refuge, 1987–2024","interactions":[],"lastModifiedDate":"2025-07-09T14:55:53.924747","indexId":"70268875","displayToPublicDate":"2025-06-10T09:48:25","publicationYear":"2025","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":6053,"text":"Hawaii Cooperative Studies Unit Technical Report","active":true,"publicationSubtype":{"id":2}},"seriesNumber":"HCSU-117","title":"Status and trends of forest bird populations at Hakalau Forest National Wildlife Refuge, 1987–2024","docAbstract":"Since 1985, the Hakalau Forest Unit of the Big Island National Wildlife Refuge Complex (hereafter, Hakalau) has protected the largest endemic forest bird diversity in the State of Hawaii. This includes three endangered and one threatened species and their habitats. Hakalau’s vast area (155 km2), mostly high elevation (>1500 m) montane forest, provides refuge from avian malaria (Plasmodium relictum) vectored by introduced southern house mosquitoes (Culex quinquefasciatus). However, increases in the seasonal temperatures optimal for disease carrying mosquitoes associated with climate change have coincided with recent downward trends of native species in the closed forest area of the refuge (1450–1750 m), where disease is most likely to occur. Therefore, to inform refuge management with the most updated information on these populations and their trends, we analyzed forest bird survey data collected using point transect distance sampling with new survey data from 2021–2024. We stratified our analysis across management units, including the open forest and pasture since 1987, and the closed forest since 1999, and across four elevation ranges (<1500, 1500–1700, 1700–1900, and >1900 m) since 1999. We used distance sampling to estimate species- and strata-specific abundances and applied log-linear regression to detect trends across the timeseries. We found a continuation of previous trends, wherein most native forest birds declined in the closed forest strata (mostly below 1700 m) and increased in the highest elevation and pasture strata. Patterns were highly species-specific for the three lower elevations and open forest strata. ‘Apapane (Himatione sanguinea) and warbling white-eye (Zosterops japonicus), the most abundant native and introduced bird species, respectively, increased in nearly all strata. ‘I‘iwi (Drepanis coccinea) and Hawai‘i ‘amakihi (Chlorodrepanis virens virens), also common, decreased in closed forest, were stable in open forest, and increased in pasture. Both species were generally stable or increasing across all elevation bands, except Hawaiʻi ʻamakihi decreased in the below 1500 m and the 1500–1700 m elevation bands. All three of the federally endangered forest bird species declined in closed forest. Hawai‘i ‘ākepa (Loxops coccineus) also declined in the open forest and 1700–1900 m band and was the only species to decline overall. ‘Akiapōlā‘au (Hemignathus wilsoni) declined in closed forest but increased overall. ‘Alawī (Loxops mana, also known as Hawai‘i creeper) also decreased in the closed forest, but was stable to increasing in most strata and remained stable overall. Hawaiʻi ʻelepaio (Chasiempis sandwichensis) declined in closed forest, was stable in open forest and most elevation strata, and increased in pasture. ʻŌmaʻo (Myadestes obscurus) was stable in open and closed forest and at middle elevations and increased in the pasture. Introduced red-billedleiothrix (Leiothrix lutea) declined in closed forest, was stable in the open forest and at most elevations, and increased in the pasture. Coinciding with these changes, seasonal conditions for vector occurrence have continued to lengthen in the lower elevation strata through 2024, while Hakalau’s outplanting efforts continued to increase forest cover in the pasture, suggesting that disease-free habitat may have decreased in the closed forest and increased in the pasture. The declines in the closed forest and mixture of trends in the open forest and middle elevations bands suggest emigration into the higher elevation strata from lower elevation strata, and that possible threats have suppressed forest birds even at elevations >1500 m.
","largerWorkTitle":"Hawai‘i Cooperative Studies Unit Technical Report Series","language":"English","publisher":"University of Hawai'i at Hilo","usgsCitation":"Hunt, N., Kendall, S., Bak, T., and Camp, R.J., 2025, Status and trends of forest bird populations at Hakalau Forest National Wildlife Refuge, 1987–2024: Hawaii Cooperative Studies Unit Technical Report HCSU-117, iii, 159 p.","productDescription":"iii, 159 p.","ipdsId":"IP-179408","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":491896,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":491886,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"http://hdl.handle.net/10790/5400"}],"country":"United States","state":"Hawaii","otherGeospatial":"Hakalau Forest National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -155.36090692408706,\n 19.96645706445993\n ],\n [\n -155.36090692408706,\n 19.740582700116107\n ],\n [\n -155.19266790064404,\n 19.740582700116107\n ],\n [\n -155.19266790064404,\n 19.96645706445993\n ],\n [\n -155.36090692408706,\n 19.96645706445993\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Hunt, Noah","contributorId":355564,"corporation":false,"usgs":false,"family":"Hunt","given":"Noah","affiliations":[{"id":13341,"text":"Hawai‘i Cooperative Studies Unit, University of Hawai‘i at Hilo","active":true,"usgs":false}],"preferred":false,"id":942459,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kendall, Steve","contributorId":213517,"corporation":false,"usgs":false,"family":"Kendall","given":"Steve","affiliations":[],"preferred":false,"id":942461,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bak, Trevor","contributorId":292157,"corporation":false,"usgs":false,"family":"Bak","given":"Trevor","affiliations":[{"id":13341,"text":"Hawai‘i Cooperative Studies Unit, University of Hawai‘i at Hilo","active":true,"usgs":false}],"preferred":false,"id":942460,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Camp, Richard J. 0000-0001-7008-923X rick_camp@usgs.gov","orcid":"https://orcid.org/0000-0001-7008-923X","contributorId":189964,"corporation":false,"usgs":true,"family":"Camp","given":"Richard","email":"rick_camp@usgs.gov","middleInitial":"J.","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true},{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"preferred":true,"id":942462,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70268010,"text":"70268010 - 2025 - Application of mercury stable isotopes to examine sources and hydrologic factors impacting mercury bioaccumulation and cycling in invertebrates of a model saline lake","interactions":[],"lastModifiedDate":"2025-06-11T14:29:59.204913","indexId":"70268010","displayToPublicDate":"2025-06-10T09:24:16","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3716,"text":"Water Research","onlineIssn":"1879-2448","printIssn":"0043-1354","active":true,"publicationSubtype":{"id":10}},"title":"Application of mercury stable isotopes to examine sources and hydrologic factors impacting mercury bioaccumulation and cycling in invertebrates of a model saline lake","docAbstract":"Invertebrates, such as brine shrimp and brine flies, are key prey items for millions of resident and migratory birds that utilize saline lakes such as Great Salt Lake (GSL). Elevated methylmercury (MeHg) in invertebrate and waterfowl species of GSL has been assumed to be linked to elevated MeHg in GSL’s anoxic Deep Brine Layer (DBL) where aqueous concentrations can exceed 30 ng/L. Here, we leverage mercury (Hg) concentration and stable isotope measurements on brine flies (Ephydra hians and Ephydra cinerea), brine shrimp (Artemia franciscana), and spider (western spotted orbweaver [Neoscona oaxacensis]) to examine temporal changes in Hg concentrations and sources during periods of DBL presence and absence. Mercury concentrations in brine flies were inversely correlated with lake level and directly correlated with salinity, possibly resulting from factors such as enhanced Hg bioaccumulation due to osmoregulatory stress and stunted growth and/or elevated salinities impacting composition, abundance, and Hg concentrations of food sources. DBL presence did not correspond to higher invertebrate Hg concentrations, highlighting that the DBL is not the primary source of MeHg to biota. Hg stable isotope signatures (Δ199Hg and δ202Hg) in brine shrimp varied seasonally and indicated greater cumulative photochemical Hg loss from the water column in late summer and fall months. Co-located brine fly and western spotted orbweaver samples show equivalent Δ199Hg and δ202Hg signatures, supporting Hg transfer from the aquatic to terrestrial food webs. Furthermore, Hg isotope results (Δ200Hg) indicate that the majority of Hg accumulating in GSL invertebrates is of atmospheric origin. This study highlights temporal controls on Hg bioaccumulation within GSL, which will help assess Hg cycling within the system in response to management actions and declining lake levels.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.watres.2025.123946","usgsCitation":"Lopez, S.F., Janssen, S., Tate, M., Black, F., Mcilwain, H.E., Flucke, L.E., Ogorek, J.M., and Johnson, W.P., 2025, Application of mercury stable isotopes to examine sources and hydrologic factors impacting mercury bioaccumulation and cycling in invertebrates of a model saline lake: Water Research, v. 284, 123946, 11 p., https://doi.org/10.1016/j.watres.2025.123946.","productDescription":"123946, 11 p.","ipdsId":"IP-170249","costCenters":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"links":[{"id":490638,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1016/j.watres.2025.123946","text":"Publisher Index Page"},{"id":490369,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Great Salt Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -113.05436301553972,\n 41.691198839643846\n ],\n [\n -113.05436301553972,\n 40.60652820274288\n ],\n [\n -111.83210764656587,\n 40.60652820274288\n ],\n [\n -111.83210764656587,\n 41.691198839643846\n ],\n [\n -113.05436301553972,\n 41.691198839643846\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"284","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Lopez, Samuel Francisco 0000-0002-3544-7465","orcid":"https://orcid.org/0000-0002-3544-7465","contributorId":344607,"corporation":false,"usgs":true,"family":"Lopez","given":"Samuel","email":"","middleInitial":"Francisco","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939961,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Janssen, Sarah E. 0000-0003-4432-3154","orcid":"https://orcid.org/0000-0003-4432-3154","contributorId":210991,"corporation":false,"usgs":true,"family":"Janssen","given":"Sarah E.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939962,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tate, Michael T. 0000-0003-1525-1219 mttate@usgs.gov","orcid":"https://orcid.org/0000-0003-1525-1219","contributorId":3144,"corporation":false,"usgs":true,"family":"Tate","given":"Michael T.","email":"mttate@usgs.gov","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true},{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939963,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Black, Frank J.","contributorId":356762,"corporation":false,"usgs":false,"family":"Black","given":"Frank J.","affiliations":[{"id":85208,"text":"Westminster University","active":true,"usgs":false}],"preferred":false,"id":939964,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Mcilwain, Hannah Erin 0000-0002-8016-785X","orcid":"https://orcid.org/0000-0002-8016-785X","contributorId":296905,"corporation":false,"usgs":true,"family":"Mcilwain","given":"Hannah","email":"","middleInitial":"Erin","affiliations":[{"id":610,"text":"Utah Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939965,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Flucke, Laura Elizabeth 0009-0002-7335-6828","orcid":"https://orcid.org/0009-0002-7335-6828","contributorId":304726,"corporation":false,"usgs":true,"family":"Flucke","given":"Laura","email":"","middleInitial":"Elizabeth","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939966,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ogorek, Jacob M. 0000-0002-6327-0740 jmogorek@usgs.gov","orcid":"https://orcid.org/0000-0002-6327-0740","contributorId":4960,"corporation":false,"usgs":true,"family":"Ogorek","given":"Jacob","email":"jmogorek@usgs.gov","middleInitial":"M.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":939967,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Johnson, William P.","contributorId":107288,"corporation":false,"usgs":false,"family":"Johnson","given":"William","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":939968,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70269301,"text":"70269301 - 2025 - Challenges and priorities for climate-informed invasive species management across multiple scales","interactions":[],"lastModifiedDate":"2025-07-18T14:26:41.860356","indexId":"70269301","displayToPublicDate":"2025-06-10T09:22:20","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5803,"text":"Conservation Science and Practice","active":true,"publicationSubtype":{"id":10}},"title":"Challenges and priorities for climate-informed invasive species management across multiple scales","docAbstract":"In recent decades, substantial evidence has accumulated regarding the effects of climate change on the establishment, spread, and impact of invasive species. While the importance of incorporating climate change into invasive species management and policy is increasingly recognized, practitioner experiences and perspectives are often overlooked. Consequently, invasive species research may be misaligned with the needs of managers and the threats of climate change. Here, we compare survey responses from a boundary-spanning organization, the Regional Invasive Species and Climate Change (RISCC) Management Network, to identify common priorities and challenges in managing invasive species in a changing climate in the United States. Survey respondents reported that 22% of management and research time is dedicated to emerging invasive species threats. Common barriers to climate-informed invasive species management include limited time, funding, and personnel. Understanding how climate change may impact control strategies was consistently identified as a high priority for invasive species management, followed by identifying resilient ecosystems and range-shifting taxa. These results demonstrate the critical need for stronger researcher-practitioner networks and greater investment in research and policy topics that more closely align with management needs to address the interacting stressors of invasive species and climate change.
","language":"English","publisher":"Society for Conservation Biology","doi":"10.1111/csp2.70074","usgsCitation":"Evans, A., Brewington, L., Brown-Lima, C., Fusco, E., Gregg, R., Lieurance, D., Parsons, E.W., Nagy, R., Thurman, L., and Morelli, T.L., 2025, Challenges and priorities for climate-informed invasive species management across multiple scales: Conservation Science and Practice, v. 7, no. 7, e70074, 16 p., https://doi.org/10.1111/csp2.70074.","productDescription":"e70074, 16 p.","ipdsId":"IP-159569","costCenters":[{"id":5080,"text":"Northeast Climate Adaptation Science Center","active":true,"usgs":true},{"id":49226,"text":"Northwest Climate Adaptation Science Center","active":true,"usgs":true}],"links":[{"id":492862,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/csp2.70074","text":"Publisher Index Page"},{"id":492534,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"7","issue":"7","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Evans, A.E.","contributorId":358275,"corporation":false,"usgs":false,"family":"Evans","given":"A.E.","affiliations":[{"id":36396,"text":"University of Massachusetts","active":true,"usgs":false}],"preferred":false,"id":943403,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brewington, L.","contributorId":358277,"corporation":false,"usgs":false,"family":"Brewington","given":"L.","affiliations":[{"id":6621,"text":"Colorado State University","active":true,"usgs":false}],"preferred":false,"id":943404,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown-Lima, Carrie Jean 0000-0003-0570-2637","orcid":"https://orcid.org/0000-0003-0570-2637","contributorId":355426,"corporation":false,"usgs":true,"family":"Brown-Lima","given":"Carrie Jean","affiliations":[{"id":5080,"text":"Northeast Climate Adaptation Science Center","active":true,"usgs":true}],"preferred":true,"id":943405,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fusco, E.","contributorId":358279,"corporation":false,"usgs":false,"family":"Fusco","given":"E.","affiliations":[{"id":6934,"text":"University of Washington","active":true,"usgs":false}],"preferred":false,"id":943406,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gregg, R.M.","contributorId":358281,"corporation":false,"usgs":false,"family":"Gregg","given":"R.M.","affiliations":[{"id":65726,"text":"Environmental Science Associates","active":true,"usgs":false}],"preferred":false,"id":943407,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lieurance, D.","contributorId":358283,"corporation":false,"usgs":false,"family":"Lieurance","given":"D.","affiliations":[{"id":7260,"text":"Pennsylvania State University","active":true,"usgs":false}],"preferred":false,"id":943408,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Parsons, Elliott W.","contributorId":330758,"corporation":false,"usgs":false,"family":"Parsons","given":"Elliott","email":"","middleInitial":"W.","affiliations":[{"id":79002,"text":"University of Hawai‘i at \nMānoa","active":true,"usgs":false}],"preferred":false,"id":943512,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Nagy, R.C.","contributorId":358285,"corporation":false,"usgs":false,"family":"Nagy","given":"R.C.","affiliations":[{"id":85595,"text":"Old Town High School","active":true,"usgs":false}],"preferred":false,"id":943409,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Thurman, Lindsey 0000-0003-3142-4909","orcid":"https://orcid.org/0000-0003-3142-4909","contributorId":269425,"corporation":false,"usgs":true,"family":"Thurman","given":"Lindsey","email":"","affiliations":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"preferred":true,"id":943513,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Morelli, Toni Lyn 0000-0001-5865-5294 tmorelli@usgs.gov","orcid":"https://orcid.org/0000-0001-5865-5294","contributorId":197458,"corporation":false,"usgs":true,"family":"Morelli","given":"Toni","email":"tmorelli@usgs.gov","middleInitial":"Lyn","affiliations":[{"id":411,"text":"National Climate Change and Wildlife Science Center","active":true,"usgs":true},{"id":5080,"text":"Northeast Climate Adaptation Science Center","active":true,"usgs":true}],"preferred":true,"id":943411,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}} ,{"id":70268915,"text":"70268915 - 2025 - Concentration dependency of PFOS bioaccumulation by freshwater benthic algae","interactions":[],"lastModifiedDate":"2025-08-18T15:12:23.462358","indexId":"70268915","displayToPublicDate":"2025-06-10T08:50:32","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":10742,"text":"ACS ES&T Water","active":true,"publicationSubtype":{"id":10}},"title":"Concentration dependency of PFOS bioaccumulation by freshwater benthic algae","docAbstract":"Although perfluorooctanesulfonic acid (PFOS) has been voluntarily phased out, it remains the most abundant and frequently detected PFAS compound in biota worldwide. A deeper understanding of how PFOS enters the aquatic food web at the energetic base is needed to better characterize and predict the general patterns of PFAS trophic transfer. Research on bioaccumulation by primary producers remains limited. Because diatoms (Bacillariophyta) are often dominant constituents of aquatic biofilms, we exposed freshwater benthic diatoms (Mayamaea atomus) to a range of PFOS concentrations (0.01–100 μg/L) for 7 days in a controlled laboratory experiment to investigate PFAS bioaccumulation patterns. We quantified PFOS in water and algal matrices using liquid chromatography-tandem mass spectrometry and calculated bioconcentration factors (BCFs). Log PFOS concentrations in diatoms increased linearly with log10 exposure concentration, corresponding to a sublinear relationship in arithmetic space. Consequently, BCF values decreased, from 4,831 to 174 L/kg, with increasing PFOS exposure, indicating concentration-dependent bioaccumulation consistent with higher-order organisms (e.g., Crustacea, Mollusca, Chordata). This pattern complicates the use of BCF for predictive purposes and may lead to mis-estimations of risk. Even as PFOS declines in the environment, algae will likely continue to accumulate and transfer PFOS and other PFAS to higher trophic levels.
","language":"English","publisher":"American Chemical Society","doi":"10.1021/acsestwater.5c00048","usgsCitation":"Zachritz, A., Steevens, J.A., Miranda, D., Perrotta, B.G., Dorman, R.A., Whitehead, H., Pulster, E.L., Walters, D., Soucek, D.J., Peaslee, G., and Lamberti, G.A., 2025, Concentration dependency of PFOS bioaccumulation by freshwater benthic algae: ACS ES&T Water, v. 5, no. 8, p. 4415-4422, https://doi.org/10.1021/acsestwater.5c00048.","productDescription":"8 p.","startPage":"4415","endPage":"4422","ipdsId":"IP-174278","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"links":[{"id":492007,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"8","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Zachritz, Alison M.","contributorId":357788,"corporation":false,"usgs":false,"family":"Zachritz","given":"Alison M.","affiliations":[{"id":39516,"text":"University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":942573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Steevens, Jeffery A. 0000-0003-3946-1229","orcid":"https://orcid.org/0000-0003-3946-1229","contributorId":207511,"corporation":false,"usgs":true,"family":"Steevens","given":"Jeffery","middleInitial":"A.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":942574,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miranda, Daniele A.","contributorId":357790,"corporation":false,"usgs":false,"family":"Miranda","given":"Daniele A.","affiliations":[{"id":39516,"text":"University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":942575,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Perrotta, Brittany G. 0000-0003-2669-3047","orcid":"https://orcid.org/0000-0003-2669-3047","contributorId":301929,"corporation":false,"usgs":true,"family":"Perrotta","given":"Brittany","middleInitial":"G.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":942576,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dorman, Rebecca A. 0000-0002-5748-7046","orcid":"https://orcid.org/0000-0002-5748-7046","contributorId":28522,"corporation":false,"usgs":true,"family":"Dorman","given":"Rebecca","email":"","middleInitial":"A.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":942577,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Whitehead, Heather D.","contributorId":357792,"corporation":false,"usgs":false,"family":"Whitehead","given":"Heather D.","affiliations":[{"id":39516,"text":"University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":942578,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pulster, Erin L. 0000-0003-4574-8613","orcid":"https://orcid.org/0000-0003-4574-8613","contributorId":300266,"corporation":false,"usgs":true,"family":"Pulster","given":"Erin","email":"","middleInitial":"L.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":942579,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Walters, David 0000-0002-4237-2158","orcid":"https://orcid.org/0000-0002-4237-2158","contributorId":205921,"corporation":false,"usgs":true,"family":"Walters","given":"David","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":942580,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Soucek, David J. 0000-0002-7741-0193 drieckssoucek@usgs.gov","orcid":"https://orcid.org/0000-0002-7741-0193","contributorId":295408,"corporation":false,"usgs":true,"family":"Soucek","given":"David","email":"drieckssoucek@usgs.gov","middleInitial":"J.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":942581,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Peaslee, Graham F.","contributorId":357794,"corporation":false,"usgs":false,"family":"Peaslee","given":"Graham F.","affiliations":[{"id":39516,"text":"University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":942582,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Lamberti, Gary A.","contributorId":296154,"corporation":false,"usgs":false,"family":"Lamberti","given":"Gary","email":"","middleInitial":"A.","affiliations":[{"id":39516,"text":"University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":942583,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}} ,{"id":70272245,"text":"70272245 - 2025 - Quantifying the substantive influence of public comment on United States federal environmental decisions under NEPA","interactions":[],"lastModifiedDate":"2025-11-20T15:46:01.51476","indexId":"70272245","displayToPublicDate":"2025-06-10T08:41:16","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1562,"text":"Environmental Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Quantifying the substantive influence of public comment on United States federal environmental decisions under NEPA","docAbstract":"A citizen’s right to comment on, and criticize, government decisions makes a difference. The U.S. National Environmental Policy Act of 1969 (NEPA) institutionalized public engagement in environmental review in the belief it would lead to better decisions and more sustainable outcomes. But, 50 years later, NEPA’s public comment process has been criticized as costly and slow, while doing little to change outcomes. Data science now makes it possible to track progress and evaluate the influence of public participation. We examined 108 environmental impact statement (EIS) processes spanning 22 years. Our analysis revealed that public comments resulted in substantive decision alterations in 62% of cases, with 64% showing modifications to alternatives, 42% showing modifications to mitigation plans and 11% leading to the selection of an entirely new preferred alternative. When federal agencies changed project alternatives (78 EISs), 88% of the time (69 of the 78 EISs) they credited public comments as the reason. In 45 of the 108 EISs, agencies modified mitigation plans and credited public comments as the reason 100% of the time. Agencies only occasionally selected a new preferred alternative (21 out of 104 EISs), but when they did, they credited public comments as the reason 100% of the time. As the United States and the 190+ states and countries that have adopted NEPA’s example consider how to address environmental change, it is important to assess the role of public participation in environmental decision making. Our data say public comments matter.
","language":"English","publisher":"IOPscience","doi":"10.1088/1748-9326/addee5","usgsCitation":"Stava, A., Thogmartin, W.E., Merideth, R., Bethard, S., Currim, F., Derbridge, J.J., Emerson, K., Laparra, E., Lien, A., McGovern, E., Pidot, J., Miller, M., Romero-Carvenas, K., Smith, B., Winnebald, C., and Lopez-Hoffman, L., 2025, Quantifying the substantive influence of public comment on United States federal environmental decisions under NEPA: Environmental Research Letters, v. 20, 074028, 12 p., https://doi.org/10.1088/1748-9326/addee5.","productDescription":"074028, 12 p.","ipdsId":"IP-169563","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":496757,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1088/1748-9326/addee5","text":"Publisher Index Page"},{"id":496686,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Stava, Ashley","contributorId":362474,"corporation":false,"usgs":false,"family":"Stava","given":"Ashley","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950557,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thogmartin, Wayne E. 0000-0002-2384-4279 wthogmartin@usgs.gov","orcid":"https://orcid.org/0000-0002-2384-4279","contributorId":2545,"corporation":false,"usgs":true,"family":"Thogmartin","given":"Wayne","email":"wthogmartin@usgs.gov","middleInitial":"E.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950558,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Merideth, Robert","contributorId":220060,"corporation":false,"usgs":false,"family":"Merideth","given":"Robert","affiliations":[{"id":33382,"text":"Udall Center for Studies in Public Policy","active":true,"usgs":false}],"preferred":false,"id":950559,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bethard, Steven","contributorId":362476,"corporation":false,"usgs":false,"family":"Bethard","given":"Steven","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950560,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Currim, Faiz","contributorId":362478,"corporation":false,"usgs":false,"family":"Currim","given":"Faiz","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950561,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Derbridge, Jonathan J.","contributorId":362480,"corporation":false,"usgs":false,"family":"Derbridge","given":"Jonathan","middleInitial":"J.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950562,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Emerson, Kirk","contributorId":171623,"corporation":false,"usgs":false,"family":"Emerson","given":"Kirk","affiliations":[{"id":26929,"text":"University of Arizona, School of Natural Resources and the Environment","active":true,"usgs":false}],"preferred":false,"id":950563,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Laparra, Egoitz","contributorId":362483,"corporation":false,"usgs":false,"family":"Laparra","given":"Egoitz","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950564,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Lien, Aaron M.","contributorId":338453,"corporation":false,"usgs":false,"family":"Lien","given":"Aaron M.","affiliations":[{"id":40855,"text":"UA","active":true,"usgs":false}],"preferred":false,"id":950565,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"McGovern, Emily","contributorId":362487,"corporation":false,"usgs":false,"family":"McGovern","given":"Emily","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950566,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Pidot, Justin","contributorId":362728,"corporation":false,"usgs":false,"family":"Pidot","given":"Justin","affiliations":[],"preferred":false,"id":950734,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Miller, Marc","contributorId":362490,"corporation":false,"usgs":false,"family":"Miller","given":"Marc","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950567,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Romero-Carvenas, Krista","contributorId":362493,"corporation":false,"usgs":false,"family":"Romero-Carvenas","given":"Krista","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950568,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Smith, Blaze","contributorId":362495,"corporation":false,"usgs":false,"family":"Smith","given":"Blaze","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950569,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Winnebald, Carly","contributorId":362498,"corporation":false,"usgs":false,"family":"Winnebald","given":"Carly","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":950570,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Lopez-Hoffman, Laura","contributorId":338457,"corporation":false,"usgs":false,"family":"Lopez-Hoffman","given":"Laura","affiliations":[{"id":40855,"text":"UA","active":true,"usgs":false}],"preferred":false,"id":950571,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70271338,"text":"70271338 - 2025 - Crustal structure along and surrounding the Hawaiian Islands: Volcanic island construction across scarred oceanic crust","interactions":[],"lastModifiedDate":"2025-09-08T15:17:58.996502","indexId":"70271338","displayToPublicDate":"2025-06-10T08:10:06","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2312,"text":"Journal of Geophysical Research","active":true,"publicationSubtype":{"id":10}},"title":"Crustal structure along and surrounding the Hawaiian Islands: Volcanic island construction across scarred oceanic crust","docAbstract":"The Hawaiian Ridge is a classic example of an intraplate volcanic island chain emplaced on oceanic lithosphere. We seek to constrain both the deformation from island loading around the Hawaiian Ridge and the influence of the oceanic lithosphere, including the Molokaʻi fracture zone (MFZ), on off-axis volcanic emplacement. To examine these processes, we conducted a marine geophysical experiment in 2018 that included the acquisition of eight multichannel seismic reflection lines and used a 6,600 in3 tuned air gun array and an ultra-long hydrophone streamer cable towed behind R/V Marcus G. Langseth across and around the southern Hawaiian Ridge. We image both the top of igneous oceanic crust and the Moho, and we observe significant variations in regional crustal structure and thickness variations, Moho characteristics, the locations of the buried MFZ, and the flexure of the Pacific oceanic lithosphere under the Hawaiian Ridge. We observe up to ∼4.5 km of deflection of the igneous oceanic crust in response to the volcanic load with sediment thickness increasing to ∼3–3.4 km near the ridge but not correlating with the deflection. A systematic difference in igneous oceanic crustal thickness is found north (average ∼5.2 km) and south (average ∼5.9 km), of the MFZ that also correspond to changes in Moho characteristics. The MFZ itself is associated with the largest crustal thickness variations (∼3.7–7.6 km). Magma ascent through these different crustal regions may account for some variations of magmatic flux to the surface along the Hawaiian Ridge.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2024JB030377","usgsCitation":"Boston, B., Shillington, D.J., Watts, A.B., Cilli, P., Dunn, R., Ito, G., Wessel, P., and ten Brink, U.S., 2025, Crustal structure along and surrounding the Hawaiian Islands: Volcanic island construction across scarred oceanic crust: Journal of Geophysical Research, v. 130, e2024JB030377, 22 p., https://doi.org/10.1029/2024JB030377.","productDescription":"e2024JB030377, 22 p.","ipdsId":"IP-177650","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":495381,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2024jb030377","text":"Publisher Index Page"},{"id":495219,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -160.42664052372106,\n 22.68304476574633\n ],\n [\n -160.42664052372106,\n 18.78716441875237\n ],\n [\n -154.57812942664066,\n 18.78716441875237\n ],\n [\n -154.57812942664066,\n 22.68304476574633\n ],\n [\n -160.42664052372106,\n 22.68304476574633\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"130","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"Boston, Brian","contributorId":252937,"corporation":false,"usgs":false,"family":"Boston","given":"Brian","email":"","affiliations":[{"id":40272,"text":"Japan Agency for Marine-Earth Science and Technology","active":true,"usgs":false}],"preferred":false,"id":948094,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shillington, Donna J.","contributorId":361000,"corporation":false,"usgs":false,"family":"Shillington","given":"Donna","middleInitial":"J.","affiliations":[{"id":12698,"text":"Northern Arizona University","active":true,"usgs":false}],"preferred":false,"id":948095,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Watts, Anthony B.","contributorId":361001,"corporation":false,"usgs":false,"family":"Watts","given":"Anthony","middleInitial":"B.","affiliations":[{"id":25447,"text":"University of Oxford","active":true,"usgs":false}],"preferred":false,"id":948096,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cilli, Philip","contributorId":361002,"corporation":false,"usgs":false,"family":"Cilli","given":"Philip","affiliations":[{"id":25447,"text":"University of Oxford","active":true,"usgs":false}],"preferred":false,"id":948097,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dunn, Robert","contributorId":223058,"corporation":false,"usgs":false,"family":"Dunn","given":"Robert","affiliations":[{"id":40659,"text":"Met Office Hadley Centre, Exeter","active":true,"usgs":false}],"preferred":false,"id":948098,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ito, Garrett","contributorId":361005,"corporation":false,"usgs":false,"family":"Ito","given":"Garrett","affiliations":[{"id":36402,"text":"University of Hawaii","active":true,"usgs":false}],"preferred":false,"id":948099,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wessel, Paul","contributorId":169097,"corporation":false,"usgs":false,"family":"Wessel","given":"Paul","email":"","affiliations":[{"id":6977,"text":"University of Hawai`i at Hilo","active":true,"usgs":false}],"preferred":false,"id":948100,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"ten Brink, Uri S. 0000-0001-6858-3001","orcid":"https://orcid.org/0000-0001-6858-3001","contributorId":201741,"corporation":false,"usgs":true,"family":"ten Brink","given":"Uri","email":"","middleInitial":"S.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":948101,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70268000,"text":"70268000 - 2025 - First-year survival of Lake Sturgeon reintroduced to the Maumee River","interactions":[],"lastModifiedDate":"2025-08-18T15:09:51.706685","indexId":"70268000","displayToPublicDate":"2025-06-10T07:50:14","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"First-year survival of Lake Sturgeon reintroduced to the Maumee River","docAbstract":"Lake Sturgeon Acipenser fulvescens have experienced large population declines due to overfishing, habitat degradation, and pollution. Due to these factors, Lake Sturgeon were extirpated from the Maumee River watershed (Ohio, United States). In 2018, a 20-year reintroduction program began that aims to establish a self-sustaining population in the Maumee River. To understand the potential success of the reintroduction program, our objectives were to estimate poststocking survival of reintroduced Lake Sturgeon from age 0 to age 1. We also wanted to understand whether survival differed between age-0 Lake Sturgeon reared in a streamside facility and those reared in a traditional hatchery.
Lake Sturgeon from the two facilities were surgically implanted with acoustic transmitters; tagged fish (n = 40 per year) were released into the Maumee River in 2018, 2019, and 2021, and their movements were monitored by the Great Lakes Acoustic Telemetry Observation System.
Approximately 75% of Lake Sturgeon were detected at 100 d after release and 50% were detected at 200 d after release. We found no differences in tag attrition between the two rearing strategies. Monthly survival estimates for Lake Sturgeon were 0.87 (95% CI = 0.81–0.92) in 2018, 0.97 (95% CI = 0.89–0.99) in 2019, and 0.95 (95% CI = 0.90–0.97) in 2021. No differences in survival between rearing strategies within release years existed. Annual survival estimates ranged from 0.19 to 0.71 among the three release years.
Our results, along with known survival rates for adult Lake Sturgeon, suggest that achieving the goal of 1,500 naturally reproducing individuals in the Maumee River is possible if reintroduced fish return to the Maumee River to spawn as adults.
","language":"English","publisher":"Oxford Academic","doi":"10.1093/najfmt/vqaf036","usgsCitation":"McKenna, J.R., Chiotti, J., Vandergoot, C., Kraus, R., Faust, M., Weimer, E., Cross, M., and Hintz, W.D., 2025, First-year survival of Lake Sturgeon reintroduced to the Maumee River: North American Journal of Fisheries Management, v. 45, no. 4, p. 557-569, https://doi.org/10.1093/najfmt/vqaf036.","productDescription":"13 p.","startPage":"557","endPage":"569","ipdsId":"IP-160416","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":490375,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":490931,"rank":1,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P13YXIQY","text":"USGS data release","linkHelpText":"Telemetry based determination of first-year survival for lake sturgeon reintroduced to the Maumee River"}],"country":"United States","state":"Ohio","otherGeospatial":"Maumee River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -83.46881169358088,\n 41.71504235122566\n ],\n [\n -83.80247859487282,\n 41.52938717320348\n ],\n [\n -84.14030288866898,\n 41.430852123254496\n ],\n [\n -84.81595398552021,\n 41.20586449889879\n ],\n [\n -84.79719945869009,\n 41.141431459993214\n ],\n [\n -84.30430006069692,\n 41.26029252232689\n ],\n [\n -83.77949531768375,\n 41.40196544198699\n ],\n [\n -83.44529277638556,\n 41.68441080181641\n ],\n [\n -83.46881169358088,\n 41.71504235122566\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"45","issue":"4","noUsgsAuthors":false,"publicationDate":"2025-06-10","publicationStatus":"PW","contributors":{"authors":[{"text":"McKenna, Jorden R.","contributorId":341316,"corporation":false,"usgs":false,"family":"McKenna","given":"Jorden","email":"","middleInitial":"R.","affiliations":[{"id":81722,"text":"Lake Erie Biological Station","active":true,"usgs":false}],"preferred":false,"id":939911,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chiotti, Justin A.","contributorId":26629,"corporation":false,"usgs":false,"family":"Chiotti","given":"Justin A.","affiliations":[{"id":12428,"text":"U. S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":939912,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vandergoot, Christopher","contributorId":351529,"corporation":false,"usgs":false,"family":"Vandergoot","given":"Christopher","affiliations":[{"id":84005,"text":"Michigan State University/GLATOS","active":true,"usgs":false}],"preferred":false,"id":939913,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kraus, Richard 0000-0003-4494-1841","orcid":"https://orcid.org/0000-0003-4494-1841","contributorId":356743,"corporation":false,"usgs":false,"family":"Kraus","given":"Richard","affiliations":[],"preferred":false,"id":939914,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Faust, Matthew","contributorId":268770,"corporation":false,"usgs":false,"family":"Faust","given":"Matthew","affiliations":[{"id":16232,"text":"Ohio Department of Natural Resources","active":true,"usgs":false}],"preferred":false,"id":939915,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Weimer, Eric","contributorId":244720,"corporation":false,"usgs":false,"family":"Weimer","given":"Eric","affiliations":[{"id":16232,"text":"Ohio Department of Natural Resources","active":true,"usgs":false}],"preferred":false,"id":939916,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Cross, Matthew","contributorId":356746,"corporation":false,"usgs":false,"family":"Cross","given":"Matthew","affiliations":[{"id":85203,"text":"Toledo Zoo","active":true,"usgs":false}],"preferred":false,"id":939918,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Hintz, William D. 0000-0002-9755-5314","orcid":"https://orcid.org/0000-0002-9755-5314","contributorId":289161,"corporation":false,"usgs":false,"family":"Hintz","given":"William","email":"","middleInitial":"D.","affiliations":[{"id":62060,"text":"Department of Environmental Sciences and Lake Erie Center, The University of Toledo 6200 Bay Shore Rd., Oregon OH 43616","active":true,"usgs":false}],"preferred":false,"id":939919,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70268818,"text":"70268818 - 2025 - Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissions","interactions":[],"lastModifiedDate":"2025-07-07T16:02:03.371452","indexId":"70268818","displayToPublicDate":"2025-06-09T10:58:00","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1587,"text":"Estuarine, Coastal and Shelf Science","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissions","title":"Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissions","docAbstract":"Wetlands are significant carbon (C) sinks and are expected to promote greater C assimilation as atmospheric CO2 concentrations rise. However, the fate of C with environmental change along fresh-to-oligohaline wetland transitions is not well understood. We established an ex-situ mesocosm experiment to mimic future elevated atmospheric CO2 concentrations (eCO2, 720 ppm) versus current (380 ppm), and we exposed four co-occurring coastal wetland communities that naturally transgress (i.e., freshwater forest, mixed forest and marsh, marsh, mudflat) to these concentrations for two years. Overall, wetland communities with marsh plants in monoculture and mixed culture maintained high ecosystem C uptake with eCO2 versus freshwater forested wetlands or mudflats, likely from superior plant species photosynthetic adjustment versus leaf area increases. eCO2 promoted greater CO2 uptake by leaves in all communities except mudflats, while promoting CH4 efflux from whole ecosystems only when marsh plants were present. eCO2 is projected to stimulate C gain 2.2-fold for forested wetlands and oligohaline marsh and 2.9-fold for forest-marsh mixture through greater CO2 uptake. However, this comes at a cost of stimulated CH4 flux by 1.4-to-1.7-fold in mixed and marsh communities versus reduced CH4 fluxes with eCO2 by forest and mudflat communities, perhaps through different oxidation pathways. Freshwater forested wetlands limited greenhouse gas emissions compared with transitional habitats, oligohaline marshes, and mudflats as atmospheric CO2 concentrations increased. Stimulated C uptake in marshes may not offset higher methane emissions from these systems, potentially facilitating greater warming in a future with elevated atmospheric CO2.
","language":"English","publisher":"Elsevier","doi":"10.1016/j.ecss.2025.109385","usgsCitation":"Chen, L., Schoolmaster, D., Krauss, K., Stagg, C., Cormier, N., Moss, R., Xiong, Y., and Weston, N., 2025, Elevated CO2 enables brackish marsh transgression into freshwater forested wetlands while stimulating CH4 emissions: Estuarine, Coastal and Shelf Science, v. 323, 109385, 11 p., https://doi.org/10.1016/j.ecss.2025.109385.","productDescription":"109385, 11 p.","ipdsId":"IP-141567","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":491741,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"323","noUsgsAuthors":false,"publicationDate":"2025-06-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Chen, Luzhen","contributorId":194706,"corporation":false,"usgs":false,"family":"Chen","given":"Luzhen","email":"","affiliations":[],"preferred":false,"id":942100,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schoolmaster, Donald 0000-0003-0910-4458","orcid":"https://orcid.org/0000-0003-0910-4458","contributorId":202356,"corporation":false,"usgs":true,"family":"Schoolmaster","given":"Donald","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":942101,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krauss, Ken 0000-0003-2195-0729","orcid":"https://orcid.org/0000-0003-2195-0729","contributorId":223022,"corporation":false,"usgs":true,"family":"Krauss","given":"Ken","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":942102,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stagg, Camille 0000-0002-1125-7253","orcid":"https://orcid.org/0000-0002-1125-7253","contributorId":221943,"corporation":false,"usgs":true,"family":"Stagg","given":"Camille","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":942103,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cormier, Nicole 0000-0003-2453-9900","orcid":"https://orcid.org/0000-0003-2453-9900","contributorId":214726,"corporation":false,"usgs":false,"family":"Cormier","given":"Nicole","affiliations":[{"id":16788,"text":"Macquarie University","active":true,"usgs":false}],"preferred":false,"id":942104,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Moss, Rebecca 0000-0002-7599-9758 mossr@usgs.gov","orcid":"https://orcid.org/0000-0002-7599-9758","contributorId":169722,"corporation":false,"usgs":true,"family":"Moss","given":"Rebecca","email":"mossr@usgs.gov","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":942105,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Xiong, Yiyi","contributorId":357642,"corporation":false,"usgs":false,"family":"Xiong","given":"Yiyi","affiliations":[{"id":63579,"text":"Xiamen University","active":true,"usgs":false}],"preferred":false,"id":942106,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Weston, Nathaniel B.","contributorId":357643,"corporation":false,"usgs":false,"family":"Weston","given":"Nathaniel B.","affiliations":[{"id":12766,"text":"Villanova University","active":true,"usgs":false}],"preferred":false,"id":942107,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70267590,"text":"ofr20251028 - 2025 - Preliminary field report of landslide hazards following Hurricane Helene","interactions":[],"lastModifiedDate":"2025-08-14T19:21:57.113137","indexId":"ofr20251028","displayToPublicDate":"2025-06-09T10:45:00","publicationYear":"2025","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2025-1028","displayTitle":"Preliminary Field Report of Landslide Hazards Following Hurricane Helene","title":"Preliminary field report of landslide hazards following Hurricane Helene","docAbstract":"This report reflects our knowledge regarding the widespread landslide activity associated with Hurricane Helene observed during the U.S. Geological Survey’s (USGS) mission assignment to North Carolina in October 2024. The material in this report was originally prepared for the Federal Emergency Management Agency under mission assignment DR-4827-NC. The data and commentary in this report are reflective of a report provided to the Federal Emergency Management Agency (FEMA) on October 18, 2024, as well as information provided in briefings at the Buncombe County Emergency Operations Center. The report has been modified for public dissemination.
This assessment was based on systematic visual examination and mapping of landslide locations from aerial and satellite imagery, visual and photographic observations from low-level helicopter overflights and conversations with local landslide experts from the North Carolina Geological Survey and Appalachian Landslide Consultants PLLC, and more than 50 years of combined landslide hazard professional experience of the mission-assigned field team. No systematic field investigations were done by the USGS.
While responding to the event, the USGS did not identify any landslides that posed an immediate major threat to recovery personnel in parts of nine counties in North Carolina (Avery, Buncombe, Henderson, McDowell, Mitchell, Polk, Rutherford, Watauga, and Yancey); however, threats from renewed landslide activity may remain heightened in localized areas for months or even years. Known areas of the most abundant landslide occurrence include Bat Cave, Lake Lure, Chimney Rock, Swannanoa, Black Mountain, Fairview, steep areas in Asheville, and the Blue Ridge Parkway. The USGS shared detailed locations of known landslides with the Emergency Operations Centers. The thousands of landslide scars on hillsides and landslide deposits on flatter ground may present some threat to recovery activities. Soil and rocks will continue to erode from newly exposed landslide scars and may pose a threat to people and infrastructure who are immediately nearby. In general, the steeper and taller the landslide scar, the greater the potential threat. This threat is heightened during periods of rainfall and increases with the duration and intensity of rainstorms. Very heavy rainfall, or repeated rainfall events during short periods, could also initiate new landslides on steep slopes. Excavation of landslide deposits, particularly excavation of those deposits directly adjacent to steep slopes, may also pose a threat to nearby people and equipment.
An interagency collaborative mapping effort led by the USGS that informed this assessment identified 1,155 landslide locations by the October 2024 briefings, but that number increased to 2,217 in a final reviewed version of the locations published in January 2025. Locations were mapped from satellite imagery, fixed-wing and helicopter surveys, media and social media, and field reports in the 3 weeks following the passage of the remnants of Hurricane Helene. USGS products outlined in this report are publicly available and include geotagged photographs from aerial reconnaissance, hazard models, an interactive view of mapped landslide locations, and landslide safety and education resources.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/ofr20251028","programNote":"Landslide Hazards Program","usgsCitation":"Allstadt, K.E., McBride, S.K., Godt, J.W., Slaughter, S.L., Baxstrom, K.W., Sobieszczyk, S., and Stull, A., 2025, Preliminary field report of landslide hazards following Hurricane Helene: U.S. Geological Survey Open-File Report 2025–1028, 15 p., https://doi.org/10.3133/ofr20251028.","productDescription":"Report vi, 15 p.; Data Release","onlineOnly":"Y","ipdsId":"IP-175853","costCenters":[{"id":78941,"text":"Geologic Hazards Science Center - Landslides / Earthquake Geology","active":true,"usgs":true}],"links":[{"id":494134,"rank":7,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_118637.htm","linkFileType":{"id":5,"text":"html"}},{"id":490259,"rank":6,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/ofr20251028/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"OFR 2025-1028"},{"id":488392,"rank":5,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/of/2025/1028/ofr20251028.xml"},{"id":488391,"rank":4,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/of/2025/1028/images"},{"id":486657,"rank":3,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P1C5W3PQ","text":"USGS data release","description":"USGS data release for OFR 2025-1028","linkHelpText":"Oblique Aerial Photographs from October 13 and 17, 2024, of Landslides and Flooding Caused by Hurricane Helene (ver 1.1, March 2025)"},{"id":486656,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2025/1028/ofr20251028.pdf","text":"Report","size":"7.42 MB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 2025-1028"},{"id":486655,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2025/1028/coverthb.jpg"}],"country":"United States","state":"North Carolina, South Carolina, Tennessee, Virginia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -81,\n 36.667\n ],\n [\n -83.25,\n 36.667\n ],\n [\n -83.25,\n 35\n ],\n [\n -81,\n 35\n ],\n [\n -81,\n 36.667\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, Geologic Hazards Science Center
U.S. Geological Survey
Box 25046, Mail Stop 966
Denver, CO 80225
Hybridization and interspecific gene flow play a substantial role in the evolution of plant taxa. The eastern North American white oak syngameon, a group of approximately 15 ecologically, morphologically and genomically distinguishable species, has long been recognised as a model system for studying introgressive hybridization in temperate trees. However, the prevalence, genomic context and environmental correlates of introgression in this system remain largely unknown. To assess introgression in the eastern North American white oak syngameon and population structure within the widespread Quercus macrocarpa, we conducted a rangewide survey of Q. macrocarpa and four sympatric eastern North American white oak species. Using a Hyb-Seq approach, we assembled a dataset of 3412 thinned single-nucleotide polymorphisms (SNPs) in 445 enriched target loci including 62 genes putatively associated with various ecological functions, as well as associated intronic regions and some off-target intergenic regions (not associated with the exons). Admixture analysis and hybrid class inference demonstrated species coherence despite hybridization and introgressive gene flow (due to backcrossing of F1s to one or both parents). Additionally, we recovered a genetic structure within Q. macrocarpa associated with latitude. Generalised linear mixed models (GLMMs) indicate that proximity to range edge predicts interspecific admixture, but rates of genetic differentiation do not appear to vary between putative functional gene classes. Our study suggests that gene flow between eastern North American white oak species may not be as rampant as previously assumed and that hybridization is most strongly predicted by proximity to a species' range margin.
","language":"English","publisher":"Wiley","doi":"10.1111/mec.17822","usgsCitation":"Ribicoff, G., Garner, M., Pham, K., Althaus, K., Cavendar-Bares, J., Crowl, A., Gray, S., Gugger, P.F., Hahn, M., Liao, S., Manos, P., Mohn, R., Pearse, I.S., Steichmann, N., Tuffin, A., Whittemore, A.T., and Hipp, A., 2025, Introgression, phylogeography, and genomic species cohesion in the eastern North American white oak syngameon: Molecular Ecology, v. 34, no. 21, e17822, 22 p., https://doi.org/10.1111/mec.17822.","productDescription":"e17822, 22 p.","ipdsId":"IP-173668","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":497374,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/mec.17822","text":"Publisher Index Page"},{"id":497284,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, Mexico, United States","geographicExtents":"{\n 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data","interactions":[],"lastModifiedDate":"2025-07-18T14:20:50.575081","indexId":"70269339","displayToPublicDate":"2025-06-09T09:13:32","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1475,"text":"Ecosphere","active":true,"publicationSubtype":{"id":10}},"title":"Assessing uncertainty in forecasts of refugia for Joshua trees using high-density distribution data","docAbstract":"Joshua trees (Yucca brevifolia and Yucca jaegeriana) are iconic, foundational species of the Mojave and Sonoran Deserts in North America. Due to their ecosystem importance, long generation times, and low resilience to disturbance, these hybridizing sister species are increasingly the focus of conservation efforts. Predicting Joshua tree responses to impending climate variability, along with the extent of suitable future habitat and/or climate refugia, is critical to ongoing management planning. Previous modeling efforts have been hampered by incomplete distribution data and are now out-of-date with the most recent global climate projections. We used a high-resolution, field-validated distributional database of nearly complete presence and absence records, along with a simulation of dispersal, to project Joshua tree distributions into future time periods and Coupled Model Intercomparison Project phase 6 (CMIP6) emissions scenarios. Overall, our models predict widespread habitat loss with limited availability of newly suitable habitat. Under the highest emissions scenario (SSP5–8.5), we project that up to 80% of current habitat may become unsuitable by 2100. Even so, our models predict a larger area of potential refugia than some previous efforts, particularly in the southern parts of the range, where we project persistent refugia through 2100. We also found a non-negligible influence of baseline climate period (the period used to represent “current” climate) on predicted future habitat probabilities. Simulations of dispersal based on the Joshua tree's limited capacity suggest that over 25% of suitable future habitat could be inaccessible, while much of the remaining future habitat area consists of refugia within the upper elevations of the species' current range. An increasing frequency of wildfire appears to be the greatest rangewide threat to future suitable habitat for Joshua trees, followed by renewable energy development. Over 80% of future suitable habitat occurs on federally managed lands, including up to 47% within Bureau of Land Management-administered areas and 15% within National Park Service units.
","language":"English","publisher":"Ecological Society of America","doi":"10.1002/ecs2.70308","usgsCitation":"Shryock, D., Esque, T., Berr, G.A., and DeFalco, L., 2025, Assessing uncertainty in forecasts of refugia for Joshua trees using high-density distribution data: Ecosphere, v. 16, no. 6, e70308, 25 p., https://doi.org/10.1002/ecs2.70308.","productDescription":"e70308, 25 p.","ipdsId":"IP-169416","costCenters":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":492861,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/ecs2.70308","text":"Publisher Index Page"},{"id":492533,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Nevada, Utah","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -120,\n 39\n ],\n [\n -120,\n 34\n ],\n [\n -112,\n 34\n ],\n [\n -112,\n 39\n ],\n [\n -120,\n 39\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"16","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-09","publicationStatus":"PW","contributors":{"authors":[{"text":"Shryock, Daniel F. 0000-0003-0330-9815 dshryock@usgs.gov","orcid":"https://orcid.org/0000-0003-0330-9815","contributorId":208659,"corporation":false,"usgs":true,"family":"Shryock","given":"Daniel F.","email":"dshryock@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":943483,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Esque, Todd 0000-0002-4166-6234 tesque@usgs.gov","orcid":"https://orcid.org/0000-0002-4166-6234","contributorId":195896,"corporation":false,"usgs":true,"family":"Esque","given":"Todd","email":"tesque@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":943484,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Berr, Gabrielle A. 0009-0004-1531-7761","orcid":"https://orcid.org/0009-0004-1531-7761","contributorId":333759,"corporation":false,"usgs":false,"family":"Berr","given":"Gabrielle","email":"","middleInitial":"A.","affiliations":[{"id":24583,"text":"former USGS employee","active":true,"usgs":false}],"preferred":false,"id":943485,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"DeFalco, Lesley A. 0000-0002-7542-9261","orcid":"https://orcid.org/0000-0002-7542-9261","contributorId":208658,"corporation":false,"usgs":true,"family":"DeFalco","given":"Lesley A.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":943486,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70270548,"text":"70270548 - 2025 - Population genomics of recovery and extinction in Hawaiian honeycreepers","interactions":[],"lastModifiedDate":"2025-08-20T14:53:55.287196","indexId":"70270548","displayToPublicDate":"2025-06-09T07:44:59","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1352,"text":"Current Biology","active":true,"publicationSubtype":{"id":10}},"title":"Population genomics of recovery and extinction in Hawaiian honeycreepers","docAbstract":"Native Hawaiian forest birds are experiencing an unprecedented extinction crisis. In particular, the iconic Hawaiian honeycreeper radiation has declined to just 17 out of ∼60 species remaining, most threatened with extinction due to avian malaria. Here, we investigate the genomic signatures of these declines in three honeycreeper species: the critically endangered ʻakikiki (Oreomystis bairdi) and ʻakekeʻe (Loxops caeruleirostris) and the extinct poʻouli (Melamprosops phaeosoma). Surprisingly, we find that Hawaiian honeycreepers, even the last known po‘ouli individual, maintain high heterozygosity compared with other island birds, reflecting historically large population sizes. This high heterozygosity may contribute to an elevated impact of inbreeding depression, as evidenced by reduced survival and reproductive success among highly inbred ‘akikiki. Demographic analysis revealed that recent precipitous declines in ‘akikiki and ‘akekeʻe coincide with the spread of avian malaria in the late 20th century, consistent with malaria being the primary driver of population collapse. Using predictive population viability modeling, we explore potential recovery scenarios for ʻakekeʻe, which has recently declined below 100 individuals in the wild. Our models predict that, under current conditions, ‘akekeʻe is likely to go extinct in the near future. However, if mosquito control campaigns are effective at reducing malaria, recovery can still occur. These findings emphasize the urgency of ongoing mosquito control efforts, demonstrating hope for a species nearing the brink of extinction. More broadly, our study provides a detailed examination of genomic diversity, inbreeding depression, and extinction risk in a collapsing adaptive radiation, with implications for conservation of other endangered island species.
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Jacqueline","contributorId":359945,"corporation":false,"usgs":false,"family":"Robinson","given":"Jacqueline","affiliations":[{"id":47822,"text":"University of California, San Francisco","active":true,"usgs":false}],"preferred":false,"id":946520,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Fleischer, Robert C.","contributorId":258062,"corporation":false,"usgs":false,"family":"Fleischer","given":"Robert C.","affiliations":[{"id":52221,"text":"Center for Conservation Genomics, Smithsonian Conservation Biology Institute","active":true,"usgs":false}],"preferred":false,"id":946521,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Ryder, Oliver A.","contributorId":289423,"corporation":false,"usgs":false,"family":"Ryder","given":"Oliver","email":"","middleInitial":"A.","affiliations":[{"id":62140,"text":"San Diego Zoo Global, Escondido, CA, USA","active":true,"usgs":false}],"preferred":false,"id":946522,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Campana, Michael G.","contributorId":359946,"corporation":false,"usgs":false,"family":"Campana","given":"Michael","middleInitial":"G.","affiliations":[{"id":85949,"text":"Smithsonian’s National Zoo & Conservation Biology Institute","active":true,"usgs":false}],"preferred":false,"id":946523,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Wilder, Aryn P.","contributorId":359947,"corporation":false,"usgs":false,"family":"Wilder","given":"Aryn","middleInitial":"P.","affiliations":[{"id":65735,"text":"San Diego Zoo Wildlife Alliance","active":true,"usgs":false}],"preferred":false,"id":946524,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70268015,"text":"70268015 - 2025 - Wake Atoll: Evaluation of plant biosecurity","interactions":[],"lastModifiedDate":"2025-06-11T14:02:38.010603","indexId":"70268015","displayToPublicDate":"2025-06-08T08:57:06","publicationYear":"2025","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":6053,"text":"Hawaii Cooperative Studies Unit Technical Report","active":true,"publicationSubtype":{"id":2}},"title":"Wake Atoll: Evaluation of plant biosecurity","docAbstract":"Introduced organisms can cause substantial effects across most landscapes. Island ecosystems, especially tropical islands, are at elevated risk from introduced organisms. The risks are even higher for tropical islands with moderate or high levels of transit, yet this can be minimized by application of appropriate biosecurity requirements. In this study, we examined the potential for non-native plant species introductions, especially invasive plants, via shipping containers to be transported to Wake Atoll, one of the most remote terrestrial land masses in the Pacific Ocean. We sowed debris collected from 30 shipping containers in a greenhouse experiment to determine if any live plants could be germinated, identify any species that germinated, and ascertain if they posed a threat if they were to be transported to Wake Atoll and became established there. During this study 23 plant species were identified, including ferns, monocots, and dicots. Fifteen of these species reached reproductive maturity over the course of seven months. From previous plant surveys on the atoll, we know that 13 of the 23 identified species were not previously recorded, and four species are already known to be invasive on Wake Atoll. This study provides insight into the potential for debris found in shipping containers to contribute to the spread of non-native, possibly invasive species. This information may help with the refinement of biosecurity strategies to prevent the accidental introduction of invasive species into sensitive natural areas such as Wake Atoll.
","language":"English","publisher":"Hawai‘i Cooperative Studies Unit, University of Hawai‘i at Hilo","usgsCitation":"Yanger, C., Jacobi, J.D., Yelenik, S.G., and Hathaway, S.A., 2025, Wake Atoll: Evaluation of plant biosecurity: Hawaii Cooperative Studies Unit Technical Report, iii, 14 p.","productDescription":"iii, 14 p.","ipdsId":"IP-140278","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":490361,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":490357,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"http://hdl.handle.net/10790/5395","linkFileType":{"id":5,"text":"html"}}],"otherGeospatial":"Wake Atoll","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 166.58673055603924,\n 19.333295310398526\n ],\n [\n 166.58673055603924,\n 19.2571320045799\n ],\n [\n 166.66824179925123,\n 19.2571320045799\n ],\n [\n 166.66824179925123,\n 19.333295310398526\n ],\n [\n 166.58673055603924,\n 19.333295310398526\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Yanger, Corie","contributorId":238981,"corporation":false,"usgs":false,"family":"Yanger","given":"Corie","email":"","affiliations":[{"id":33492,"text":"TBD","active":true,"usgs":false}],"preferred":false,"id":939976,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jacobi, James D. 0000-0003-2313-7862 jjacobi@usgs.gov","orcid":"https://orcid.org/0000-0003-2313-7862","contributorId":3705,"corporation":false,"usgs":true,"family":"Jacobi","given":"James","email":"jjacobi@usgs.gov","middleInitial":"D.","affiliations":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true},{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true}],"preferred":true,"id":939977,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yelenik, Stephanie G. 0000-0002-9011-0769","orcid":"https://orcid.org/0000-0002-9011-0769","contributorId":256836,"corporation":false,"usgs":false,"family":"Yelenik","given":"Stephanie","email":"","middleInitial":"G.","affiliations":[{"id":51875,"text":"formerly U.S. Geological Survey; currently Rocky Mountain Research Station, U.S. Forest Service","active":true,"usgs":false}],"preferred":false,"id":939978,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hathaway, Stacie A. 0000-0002-4167-8059","orcid":"https://orcid.org/0000-0002-4167-8059","contributorId":206793,"corporation":false,"usgs":true,"family":"Hathaway","given":"Stacie","email":"","middleInitial":"A.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":939979,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70274046,"text":"70274046 - 2025 - Genetic variation and metapopulation structure inform recovery goals in a threatened species","interactions":[],"lastModifiedDate":"2026-02-23T17:06:47.020325","indexId":"70274046","displayToPublicDate":"2025-06-07T10:01:36","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":19845,"text":"Genes","active":true,"publicationSubtype":{"id":10}},"title":"Genetic variation and metapopulation structure inform recovery goals in a threatened species","docAbstract":"Background: Monitoring genetic parameters is important for setting effective conservation and management strategies, particularly for small, fragmented, and isolated populations. Small, isolated populations face increased rates of genetic drift and inbreeding, which increase extinction risk especially when gene flow is limited. Methods: Here, we applied a Genotyping-in-Thousands by sequencing (GT-seq) panel to inform recovery action for the federally threatened northern Idaho ground squirrel (Urocitellus brunneus). We evaluated genetic diversity, structure, connectivity, and effective population size to address species recovery goals. Results: We delineated three types of conservation units: (1) three evolutionarily significant units that represent long-term population structure and variation, (2) nine management units that reflect current demographic connectivity and restrictions to gene flow, and (3) three adaptive units that capture adaptive differentiation across the species range. Effective population sizes per management unit were small overall (mean 38.16, range 2.3–220.9), indicating that recovery goals of 10 subpopulations with Ne > 500 have not been reached. Conclusions: Our results support the maintenance of connectivity within evolutionarily significant units through the restoration of dispersal corridors. Next steps could include further sampling of some subpopulations with low sample sizes, unsampled subpopulations, and subpopulations that are geographically isolated. Genotyping future samples with the same GT-seq panel would help to detect dispersal, assess effective population size, monitor the effects of inbreeding, and evaluate adaptive differentiation to monitor the effects of management action and environmental change.
","language":"English","publisher":"MDPI","doi":"10.3390/genes16060694","usgsCitation":"Garrett, M.J., Conway, C.J., Waits, L.P., Hohenlohe, P.A., 2025, Genetic variation and metapopulation structure inform recovery goals in a threatened species: Genes, v. 16, no. 6, 694, 19 p., https://doi.org/10.3390/genes16060694.","productDescription":"694, 19 p.","ipdsId":"IP-169931","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":500590,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3390/genes16060694","text":"Publisher Index Page"},{"id":500425,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Idaho","county":"Adams County, Valley County","otherGeospatial":"central Idaho","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.75400908328447,\n 45.11582369105611\n ],\n [\n -117.04818943054073,\n 44.6392090511051\n ],\n [\n -116.00623172767331,\n 44.16247922591529\n ],\n [\n -115.54567062867841,\n 44.68080329283654\n ],\n [\n -116.75400908328447,\n 45.11582369105611\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"16","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-08","publicationStatus":"PW","contributors":{"authors":[{"text":"Garrett, Molly J.","contributorId":366831,"corporation":false,"usgs":false,"family":"Garrett","given":"Molly","middleInitial":"J.","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":956287,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":956288,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Waits, Lisette P.","contributorId":366832,"corporation":false,"usgs":false,"family":"Waits","given":"Lisette","middleInitial":"P.","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":956289,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hohenlohe, Paul A.","contributorId":366833,"corporation":false,"usgs":false,"family":"Hohenlohe","given":"Paul","middleInitial":"A.","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":956290,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70268082,"text":"70268082 - 2025 - Outwash events inhibit vegetation recovery and prolong coastal vulnerability","interactions":[],"lastModifiedDate":"2025-06-12T14:47:53.144697","indexId":"70268082","displayToPublicDate":"2025-06-07T09:44:25","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7357,"text":"JGR Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Outwash events inhibit vegetation recovery and prolong coastal vulnerability","docAbstract":"Overwash, when high ocean water levels and waves flood a coastline, is a common phenomenon that can lead to washover deposits and barrier rollover. Outwash, by contrast, involves seaward flow, often driven by high back-barrier water levels, and can produce washout channels and nearshore deposition. Our observations show that washout channels were quickly (days to weeks) filled and reshaped into beaches, berms, and washover deposits and ponds often formed at the landward ends. However, there was a significant delay in revegetation of former washout areas compared with washover areas. North Core Banks, North Carolina, was affected by repeat hurricanes in different ways: Hurricane Florence (2018) deposited large washover fans 0.5–1 m thick, and Hurricane Dorian (2019) removed 1–4 m of sediment from washout channels. Aerial surveys captured vegetation recolonization on the Florence washover fans within a year but, after Dorian, surveys showed that although the washout channels and ponds quickly filled with marine sand, the channel throats and new washover platforms remained mostly unvegetated for five years. New vegetation growth was associated with the washout ponds and was characteristic of low-elevation hydrophilic environments. We observed comparable outcomes at washout and washover locations on the coasts of Texas and New York and suggest that outwash interrupts the normal cycle of vegetation and dune growth that is key to rebuilding barrier islands after storms. The lack of vegetation in the former washout channels prolongs vulnerability to overwash, further delaying recovery. Our findings have implications for best-management practices and modeling of coastal geomorphic evolution.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2024JF008162","usgsCitation":"Over, J.R., and Sherwood, C.R., 2025, Outwash events inhibit vegetation recovery and prolong coastal vulnerability: JGR Earth Surface, v. 130, no. 6, e2024JF008162, 14 p., https://doi.org/10.1029/2024JF008162.","productDescription":"e2024JF008162, 14 p.","ipdsId":"IP-170789","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":490932,"rank":0,"type":{"id":30,"text":"Data Release"},"url":"https://doi.org/10.5066/P1PGG57F","text":"USGS data release","linkHelpText":"Supplemental data for Over and Sherwood (2025), Washover and washout locations and landcover classifications after hurricanes Florence, Dorian, Harvey, Ike, and Sandy in North Carolina, Texas, and New York"},{"id":490510,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"130","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Over, Jin-Si R. 0000-0001-6753-7185 jover@usgs.gov","orcid":"https://orcid.org/0000-0001-6753-7185","contributorId":260178,"corporation":false,"usgs":true,"family":"Over","given":"Jin-Si","email":"jover@usgs.gov","middleInitial":"R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940168,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sherwood, Christopher R. 0000-0001-6135-3553 csherwood@usgs.gov","orcid":"https://orcid.org/0000-0001-6135-3553","contributorId":2866,"corporation":false,"usgs":true,"family":"Sherwood","given":"Christopher","email":"csherwood@usgs.gov","middleInitial":"R.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940169,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70268303,"text":"70268303 - 2025 - Waterline responses to climate forcing along the North American West Coast","interactions":[],"lastModifiedDate":"2025-06-20T14:41:50.092888","indexId":"70268303","displayToPublicDate":"2025-06-07T09:41:16","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":8956,"text":"Communications Earth & Environment","active":true,"publicationSubtype":{"id":10}},"title":"Waterline responses to climate forcing along the North American West Coast","docAbstract":"Understanding waterline variability at seasonal to interannual timescales is crucial for predicting coastal responses to climate forcing. However, relationships between large-scale climate variability and coastal morphodynamics remain underexplored beyond intensively monitored sites. This study leverages a newly developed 25-year (1997–2022) satellite-derived waterline dataset along the North American West Coast. Our results reveal distinct latitudinal patterns in seasonal waterline change, with excursions exceeding 25 m in the Pacific Northwest, decreasing to less than 10 m in Southern California and farther south. Waterline fluctuations strongly follow wave power in the Pacific Northwest (R = −0.78), northern California (R = −0.75), and Baja California (R = −0.62), while Baja California Sur aligns more with sea-level variations (R = −0.42). Interannually, waterline change exhibits latitudinal dependence: south of southern California, variability is low, with major erosion confined to strong El Niño-Southern Oscillation (ENSO) events, while northern regions show mixed responses. ENSO-driven storm track shifts modulate winter wave climate, resulting in enhanced (attenuated) erosion from southern California to Baja California Sur during El Niño (La Niña). However, further north, ENSO impacts are less consistent, reflecting a complex interplay of storm track displacement and intensification. These findings highlight the spatial complexity of ENSO-driven morphodynamics and provide a framework for assessing climate-induced coastal vulnerability.
","language":"English","publisher":"Nature","doi":"10.1038/s43247-025-02414-x","usgsCitation":"Graffin, M., Almar, R., Bergsma, E., Boucharel, J., Vitousek, S., Taherkhani, M., and Ruggiero, P., 2025, Waterline responses to climate forcing along the North American West Coast: Communications Earth & Environment, v. 6, no. 1, 444, 15 p., https://doi.org/10.1038/s43247-025-02414-x.","productDescription":"444, 15 p.","ipdsId":"IP-176082","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":491492,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1038/s43247-025-02414-x","text":"Publisher Index Page"},{"id":491023,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Mexico, United States","otherGeospatial":"North American West Coast","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -110.2593217632257,\n 21.579599951497116\n ],\n [\n -107.78246959015371,\n 24.439607185630067\n ],\n [\n -113.38712854090997,\n 31.78944985739807\n ],\n [\n -117.82933273647194,\n 34.52100659732692\n ],\n [\n -122.3885260560478,\n 38.99674000208634\n ],\n [\n -122.69292289258158,\n 48.4491737214054\n ],\n [\n -125.47504604528146,\n 48.56644212375616\n ],\n [\n -125.8512434363422,\n 41.747408051533455\n ],\n [\n -125.27944419064954,\n 37.302919506512524\n ],\n [\n -120.86710575526862,\n 33.41903458083323\n ],\n [\n -114.71330020847188,\n 25.80963272357718\n ],\n [\n -110.2593217632257,\n 21.579599951497116\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"6","issue":"1","noUsgsAuthors":false,"publicationDate":"2025-06-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Graffin, Marcan","contributorId":357126,"corporation":false,"usgs":false,"family":"Graffin","given":"Marcan","affiliations":[{"id":47711,"text":"University of Toulouse","active":true,"usgs":false}],"preferred":false,"id":940751,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Almar, Rafael","contributorId":357129,"corporation":false,"usgs":false,"family":"Almar","given":"Rafael","affiliations":[{"id":47711,"text":"University of Toulouse","active":true,"usgs":false}],"preferred":false,"id":940752,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bergsma, Erwin W.J.","contributorId":357132,"corporation":false,"usgs":false,"family":"Bergsma","given":"Erwin W.J.","affiliations":[{"id":49049,"text":"CNES","active":true,"usgs":false}],"preferred":false,"id":940753,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boucharel, Julien","contributorId":357135,"corporation":false,"usgs":false,"family":"Boucharel","given":"Julien","affiliations":[{"id":47711,"text":"University of Toulouse","active":true,"usgs":false}],"preferred":false,"id":940754,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Vitousek, Sean 0000-0002-3369-4673 svitousek@usgs.gov","orcid":"https://orcid.org/0000-0002-3369-4673","contributorId":149065,"corporation":false,"usgs":true,"family":"Vitousek","given":"Sean","email":"svitousek@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940755,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Taherkhani, Mohsen","contributorId":357138,"corporation":false,"usgs":false,"family":"Taherkhani","given":"Mohsen","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":940756,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ruggiero, Peter","contributorId":357141,"corporation":false,"usgs":false,"family":"Ruggiero","given":"Peter","affiliations":[{"id":6680,"text":"Oregon State University","active":true,"usgs":false}],"preferred":false,"id":940757,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70267973,"text":"70267973 - 2025 - Rainfall thresholds for postfire debris-flow initiation vary with short-duration rainfall climatology","interactions":[],"lastModifiedDate":"2025-06-10T14:27:36.321627","indexId":"70267973","displayToPublicDate":"2025-06-07T09:26:20","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":7357,"text":"JGR Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Rainfall thresholds for postfire debris-flow initiation vary with short-duration rainfall climatology","docAbstract":"The size, frequency, and geographic scope of severe wildfires are expanding across the globe, including in the Western United States. Recently burned steeplands have an increased likelihood of debris flows, which pose hazards to downstream communities. The conditions for postfire debris-flow initiation are commonly expressed as rainfall intensity-duration thresholds, which can be estimated given sufficient observational history. However, the spread of wildfire across diverse climates poses a challenge for accurate threshold prediction in areas with limited observations. Studies of mass-movement processes in unburned areas indicate that thresholds vary with local climate, such that higher rainfall rates are required for initiation in climates characterized by frequent intense rainfall. Here, we use three independent methods to test whether initiation of postfire runoff-generated debris flows across the Western United States varies similarly with climate. Through the compilation of observed thresholds at various fires, analysis of the spatial density of observed debris flows, and quantification of feature importance at different spatial scales, we show that postfire debris-flow initiation thresholds vary systematically with short-duration rainfall-intensity climatology. The predictive power of climatological data sets that are readily available before a fire occurs offers a much-needed tool for hazard management in regions that are facing increased wildfire activity, have sparse observational history, and/or have limited resources for field-based hazard assessment. Furthermore, if the observed variation in thresholds reflects long-term adjustment of the landscape to local climate, rapid shifts in rainfall intensity related to climate change will likely induce spatially variable shifts in postfire debris-flow likelihood.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2024JF007781","usgsCitation":"Cavagnaro, D.B., McCoy, S., Lindsay, D.N., McGuire, L.A., Kean, J.W., and Trugman, D.T., 2025, Rainfall thresholds for postfire debris-flow initiation vary with short-duration rainfall climatology: JGR Earth Surface, v. 130, no. 6, e2024JF007781, 20 p., https://doi.org/10.1029/2024JF007781.","productDescription":"e2024JF007781, 20 p.","ipdsId":"IP-164533","costCenters":[{"id":78941,"text":"Geologic Hazards Science Center - Landslides / Earthquake Geology","active":true,"usgs":true}],"links":[{"id":490626,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2024jf007781","text":"Publisher Index Page"},{"id":490307,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Colorado, Nevada, New Mexico, 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Survey","active":true,"usgs":false}],"preferred":false,"id":939840,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McGuire, Luke A. 0000-0001-8178-7922 lmcguire@usgs.gov","orcid":"https://orcid.org/0000-0001-8178-7922","contributorId":203420,"corporation":false,"usgs":false,"family":"McGuire","given":"Luke","email":"lmcguire@usgs.gov","middleInitial":"A.","affiliations":[{"id":7042,"text":"University of Arizona","active":true,"usgs":false}],"preferred":false,"id":939841,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kean, Jason W. 0000-0003-3089-0369 jwkean@usgs.gov","orcid":"https://orcid.org/0000-0003-3089-0369","contributorId":1654,"corporation":false,"usgs":true,"family":"Kean","given":"Jason","email":"jwkean@usgs.gov","middleInitial":"W.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":true,"id":939842,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Trugman, Daniel T.","contributorId":197011,"corporation":false,"usgs":false,"family":"Trugman","given":"Daniel","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":939843,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70268149,"text":"70268149 - 2025 - The δ13C signature of dissolved organic and inorganic carbon reveals complex carbon transformations within a salt marsh","interactions":[],"lastModifiedDate":"2025-06-16T13:50:57.35113","indexId":"70268149","displayToPublicDate":"2025-06-07T08:44:15","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":9326,"text":"JGR Biogeosciences","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The δ13C signature of dissolved organic and inorganic carbon reveals complex carbon transformations within a salt marsh","title":"The δ13C signature of dissolved organic and inorganic carbon reveals complex carbon transformations within a salt marsh","docAbstract":"Coastal wetlands have high rates of atmospheric CO2 uptake, which is subsequently respired back to the atmosphere, stored as organic matter within flooded, anoxic soils, or exported to the coastal ocean. Transformation of fixed carbon occurs through a variety of subsurface aerobic and anaerobic microbial processes, and results in a large inventory of dissolved carbon. Carbon source and the roles of aerobic respiration, sulfate reduction, and methane cycling were evaluated within salt marsh peat and the underlying sandy subterranean estuary. There is a large increase in dissolved inorganic carbon (DIC, 7,350 ± 3,900 μmol L−1), dissolved organic carbon (DOC, 1,040 ± 1,480 μmol L−1) and CH4 (14.5 ± 33.3 μmol L−1) within the marsh porewaters compared to creek waters. Alkalinity production (5,730 ± 2,170 μeq L−1) and sulfate removal (1,810 ± 1,970 μmol L−1) indicate anaerobic respiration, however, relative contributions from the various decomposition pathways cannot be identified due to overlapping geochemical signatures. The δ13C of the DOC (−29.0 ± 3.7‰) and DIC (−11.2 ± 1.1‰) produced within the marsh differed from the bulk soil organic matter δ13C (−14.5 ± 0.2‰). We explore a variety of mechanisms that could result in co-occurring depleted δ13C-DOC and enriched δ13C-DIC compared to the bulk soil organic carbon pool and salt marsh vegetation, including selective mineralization, production of δ13C-depleted bacterial biomass, and methane-derived DOC. While important questions remain about carbon cycling pathways, we found evidence of a cryptic methane cycle. Alteration of the δ13C of carbon species complicates source attribution in solid and dissolved phases and careful consideration should be used when carbon is partitioned between in situ salt marsh production and external marine and terrestrial sources.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2025JG008898","usgsCitation":"Eagle, M.J., Kroeger, K.D., Pohlman, J., Tamborski, J., Wang, Z., Brooks, T.W., O’Keefe Suttles, J.A., and Mann, A.G., 2025, The δ13C signature of dissolved organic and inorganic carbon reveals complex carbon transformations within a salt marsh: JGR Biogeosciences, v. 130, no. 6, e2025JG008898, 17 p., https://doi.org/10.1029/2025JG008898.","productDescription":"e2025JG008898, 17 p.","ipdsId":"IP-174273","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":491005,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2025jg008898","text":"Publisher Index Page"},{"id":490749,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape, Cod, Sage Lot Pond salt marsh observatory","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -70.51707536067447,\n 41.55833577906864\n ],\n [\n -70.51707536067447,\n 41.55140117618592\n ],\n [\n -70.49982929720429,\n 41.55140117618592\n ],\n [\n -70.49982929720429,\n 41.55833577906864\n ],\n [\n -70.51707536067447,\n 41.55833577906864\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"130","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-07","publicationStatus":"PW","contributors":{"authors":[{"text":"Eagle, Meagan J. 0000-0001-5072-2755 meagle@usgs.gov","orcid":"https://orcid.org/0000-0001-5072-2755","contributorId":242890,"corporation":false,"usgs":true,"family":"Eagle","given":"Meagan","email":"meagle@usgs.gov","middleInitial":"J.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kroeger, Kevin D. 0000-0002-4272-2349 kkroeger@usgs.gov","orcid":"https://orcid.org/0000-0002-4272-2349","contributorId":1603,"corporation":false,"usgs":true,"family":"Kroeger","given":"Kevin","email":"kkroeger@usgs.gov","middleInitial":"D.","affiliations":[{"id":41100,"text":"Coastal and Marine Hazards and Resources Program","active":true,"usgs":true}],"preferred":true,"id":940363,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pohlman, John 0000-0002-3563-4586","orcid":"https://orcid.org/0000-0002-3563-4586","contributorId":220804,"corporation":false,"usgs":true,"family":"Pohlman","given":"John","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":940364,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tamborski, J.J.","contributorId":350271,"corporation":false,"usgs":false,"family":"Tamborski","given":"J.J.","affiliations":[{"id":36518,"text":"Old Dominion University","active":true,"usgs":false}],"preferred":false,"id":940365,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wang, Z.A.","contributorId":350270,"corporation":false,"usgs":false,"family":"Wang","given":"Z.A.","affiliations":[{"id":83704,"text":"Woods Hole Oceanography Institution","active":true,"usgs":false}],"preferred":false,"id":940366,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brooks, Thomas W. 0000-0002-0555-3398 wallybrooks@usgs.gov","orcid":"https://orcid.org/0000-0002-0555-3398","contributorId":5989,"corporation":false,"usgs":true,"family":"Brooks","given":"Thomas","email":"wallybrooks@usgs.gov","middleInitial":"W.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940367,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"O’Keefe Suttles, Jennifer A. 0000-0003-2345-5633","orcid":"https://orcid.org/0000-0003-2345-5633","contributorId":202609,"corporation":false,"usgs":true,"family":"O’Keefe Suttles","given":"Jennifer","email":"","middleInitial":"A.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940368,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Mann, Adrian G. 0000-0003-1689-8524 adriangreen@usgs.gov","orcid":"https://orcid.org/0000-0003-1689-8524","contributorId":4328,"corporation":false,"usgs":true,"family":"Mann","given":"Adrian","email":"adriangreen@usgs.gov","middleInitial":"G.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":940369,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70267962,"text":"70267962 - 2025 - Understanding the evolution of scoria cone morphology using multivariate models","interactions":[],"lastModifiedDate":"2025-06-09T15:14:31.734183","indexId":"70267962","displayToPublicDate":"2025-06-06T10:11:39","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":8956,"text":"Communications Earth & Environment","active":true,"publicationSubtype":{"id":10}},"title":"Understanding the evolution of scoria cone morphology using multivariate models","docAbstract":"Scoria cones are the most abundant type of volcano in the Solar System. They occur in every tectonic setting and often overlap with human populations, yet our ability to provide complete geochronology within volcanic fields remains limited. Appropriate geochronology underpins the reconstruction of size-frequency distribution and is a key input for robust volcanic hazard assessment. Morphometric data have long been used to estimate relative ages of scoria cones; however, they have only shown promise at single volcanic fields and simple cones with homogenous pyroclastics. Here, we present a new global inventory of dated scoria cones (n = 572) from 71 volcanic fields formed under diverse magmatic, tectonic and climatic regimes, and build data-driven age models for dating scoria cones using easily accessible morphometric, reflectance and climatic variables. Our models suggest chemical composition of ascending magma may influence the initial scoria cone morphology which is then gradually modified by erosion over time.
","language":"English","publisher":"Nature","doi":"10.1038/s43247-025-02425-8","usgsCitation":"Kereszturi, G., Grosse, P., Whitehead, M., Guilbaud, M., Downs, D.T., Noguchi, R., and Kervyn, M., 2025, Understanding the evolution of scoria cone morphology using multivariate models: Communications Earth & Environment, v. 6, 439, 11 p., https://doi.org/10.1038/s43247-025-02425-8.","productDescription":"439, 11 p.","ipdsId":"IP-171151","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":490624,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1038/s43247-025-02425-8","text":"Publisher Index Page"},{"id":490265,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","noUsgsAuthors":false,"publicationDate":"2025-06-06","publicationStatus":"PW","contributors":{"authors":[{"text":"Kereszturi, Gabor 0000-0003-4336-2012","orcid":"https://orcid.org/0000-0003-4336-2012","contributorId":247601,"corporation":false,"usgs":false,"family":"Kereszturi","given":"Gabor","email":"","affiliations":[{"id":49587,"text":"Volcanic Risk Solutions, Massey University, Palmerston North, 4474, New Zealand","active":true,"usgs":false}],"preferred":false,"id":939787,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grosse, Pablo","contributorId":356702,"corporation":false,"usgs":false,"family":"Grosse","given":"Pablo","affiliations":[{"id":85189,"text":"Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Fundación Miguel Lillo","active":true,"usgs":false}],"preferred":false,"id":939788,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Whitehead, Melody","contributorId":356703,"corporation":false,"usgs":false,"family":"Whitehead","given":"Melody","affiliations":[{"id":13571,"text":"Massey University","active":true,"usgs":false}],"preferred":false,"id":939789,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Guilbaud, Marie-Noëlle","contributorId":356704,"corporation":false,"usgs":false,"family":"Guilbaud","given":"Marie-Noëlle","affiliations":[{"id":25354,"text":"Universidad Nacional Autónoma de México","active":true,"usgs":false}],"preferred":false,"id":939790,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Downs, Drew T. 0000-0002-9056-1404 ddowns@usgs.gov","orcid":"https://orcid.org/0000-0002-9056-1404","contributorId":173516,"corporation":false,"usgs":true,"family":"Downs","given":"Drew","email":"ddowns@usgs.gov","middleInitial":"T.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":939791,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Noguchi, Rina","contributorId":356705,"corporation":false,"usgs":false,"family":"Noguchi","given":"Rina","affiliations":[{"id":85190,"text":"Niigata University","active":true,"usgs":false}],"preferred":false,"id":939792,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kervyn, Matthieu","contributorId":213338,"corporation":false,"usgs":false,"family":"Kervyn","given":"Matthieu","email":"","affiliations":[],"preferred":false,"id":939793,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70267945,"text":"70267945 - 2025 - Resiliency of land change monitoring efforts to input data resampling","interactions":[],"lastModifiedDate":"2025-06-09T15:10:26.407318","indexId":"70267945","displayToPublicDate":"2025-06-06T10:04:51","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":17157,"text":"Frontiers in Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Resiliency of land change monitoring efforts to input data resampling","docAbstract":"The geometric transformation of remotely sensed imagery from one map projection to another necessitates a data resampling operation which alters the recorded values. The global Landsat archive is made available in the Universal Transverse Mercator (UTM) projection system which preserves geographic shape across small area but introduces small errors in distance and area. As remote sensing-based studies develop from local scales to regional and global, they need to adopt more appropriate map projections from which accurate area measurements can be made. While effects of resampling on recorded values have been studied in the past, the impacts on higher-level results such as land cover have not been widely reported. This study investigates an approach for monitoring land cover and land change using two input datasets derived from identical source Landsat data, where one input dataset is transformed to an equal-area map projection and thereby resampled. Recorded surface reflectance values are changed through the reprojection/resampling process, and our study highlights observed differences in derived land cover from these two different input datasets throughout the various stages of deriving land cover and related characteristics. Our findings suggest that large-scale analyses of land cover will not be substantially impacted by reprojection of input data, but small-scale analyses should exercise caution when interpreting timing and magnitude of pixel-level change and classification dynamics.
","language":"English","publisher":"Frontiers Media","doi":"10.3389/frsen.2025.1570580","usgsCitation":"Healey, N.C., Barber, C., Smith, K., Mital, R., Brown, J.F., and Robison, C., 2025, Resiliency of land change monitoring efforts to input data resampling: Frontiers in Remote Sensing, v. 6, 1570580, 11 p., https://doi.org/10.3389/frsen.2025.1570580.","productDescription":"1570580, 11 p.","ipdsId":"IP-175401","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":490669,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3389/frsen.2025.1570580","text":"Publisher Index Page"},{"id":490264,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Georgia","city":"Atlanta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -84.333,\n 34.667\n ],\n [\n -84.333,\n 33.333\n ],\n [\n -83,\n 33.333\n ],\n [\n -83,\n 34.667\n ],\n [\n -84.333,\n 34.667\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"6","noUsgsAuthors":false,"publicationDate":"2025-06-06","publicationStatus":"PW","contributors":{"authors":[{"text":"Healey, Nathan C. 0000-0002-8516-2636","orcid":"https://orcid.org/0000-0002-8516-2636","contributorId":280023,"corporation":false,"usgs":false,"family":"Healey","given":"Nathan","email":"","middleInitial":"C.","affiliations":[{"id":57411,"text":"KBR, Inc.","active":true,"usgs":false}],"preferred":false,"id":939736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barber, Christopher P. 0000-0003-0570-1140","orcid":"https://orcid.org/0000-0003-0570-1140","contributorId":223102,"corporation":false,"usgs":true,"family":"Barber","given":"Christopher","middleInitial":"P.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":939737,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Kelcy 0000-0001-6811-1485","orcid":"https://orcid.org/0000-0001-6811-1485","contributorId":272037,"corporation":false,"usgs":false,"family":"Smith","given":"Kelcy","affiliations":[{"id":56338,"text":"KBR, Inc., Contractor under USGS","active":true,"usgs":false}],"preferred":false,"id":939738,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mital, Rohan 0009-0001-3241-756X","orcid":"https://orcid.org/0009-0001-3241-756X","contributorId":356687,"corporation":false,"usgs":false,"family":"Mital","given":"Rohan","affiliations":[{"id":85186,"text":"KBR, Inc. contractor to the USGS EROS Center","active":true,"usgs":false}],"preferred":false,"id":939739,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brown, Jesslyn F. 0000-0002-9976-1998 jfbrown@usgs.gov","orcid":"https://orcid.org/0000-0002-9976-1998","contributorId":176609,"corporation":false,"usgs":true,"family":"Brown","given":"Jesslyn","email":"jfbrown@usgs.gov","middleInitial":"F.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":939740,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Robison, Charles 0000-0002-7623-2380","orcid":"https://orcid.org/0000-0002-7623-2380","contributorId":217916,"corporation":false,"usgs":false,"family":"Robison","given":"Charles","email":"","affiliations":[{"id":39714,"text":"SGT Inc. (USGS Contractor)","active":true,"usgs":false}],"preferred":false,"id":939741,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70267957,"text":"70267957 - 2025 - Autumn as an overlooked opportunity for limnology","interactions":[],"lastModifiedDate":"2025-06-09T15:03:25.858843","indexId":"70267957","displayToPublicDate":"2025-06-06T09:56:12","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":16703,"text":"PLOS Climate","active":true,"publicationSubtype":{"id":10}},"title":"Autumn as an overlooked opportunity for limnology","docAbstract":"Ecological disciplines, from forestry to soil sciences and ornithology, recognize the critical role of autumn in an array of physical and biological processes. Terrestrial studies categorize autumn as the end of the growing season. Autumn weather conditions can disrupt plant-soil interactions, affecting nutrient cycling and soil fertility [1]; determine dormancy and freezing tolerance of trees during winter [2]; and create phenological mismatches that affect diet quality and predator-prey relationships [3]. In many lakes, autumn is marked by an important period of flux within the water column, affecting nutrient cycling, phytoplankton, and fish productivity [4]. Despite their importance, autumnal limnological processes remain understudied.
","language":"English","publisher":"PLoS","doi":"10.1371/journal.pclm.0000648","usgsCitation":"Ferrato, F., Sharma, S., Culpepper, J.A., Talbot, C., Meyer, M.F., and Hampton, S.E., 2025, Autumn as an overlooked opportunity for limnology: PLOS Climate, v. 4, no. 6, e0000648, 5 p., https://doi.org/10.1371/journal.pclm.0000648.","productDescription":"e0000648, 5 p.","ipdsId":"IP-177586","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":490622,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pclm.0000648","text":"Publisher Index Page"},{"id":490261,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4","issue":"6","noUsgsAuthors":false,"publicationDate":"2025-06-06","publicationStatus":"PW","contributors":{"authors":[{"text":"Ferrato, Faith R","contributorId":356693,"corporation":false,"usgs":false,"family":"Ferrato","given":"Faith R","affiliations":[{"id":16184,"text":"York University","active":true,"usgs":false}],"preferred":false,"id":939775,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sharma, Sapna","contributorId":150332,"corporation":false,"usgs":false,"family":"Sharma","given":"Sapna","email":"","affiliations":[{"id":16184,"text":"York University","active":true,"usgs":false}],"preferred":false,"id":939776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Culpepper, Joshua A. 0000-0002-0468-0539","orcid":"https://orcid.org/0000-0002-0468-0539","contributorId":344026,"corporation":false,"usgs":false,"family":"Culpepper","given":"Joshua","middleInitial":"A.","affiliations":[{"id":16184,"text":"York University","active":true,"usgs":false}],"preferred":false,"id":939777,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Talbot, Ceara J 0000-0002-6227-6868","orcid":"https://orcid.org/0000-0002-6227-6868","contributorId":356694,"corporation":false,"usgs":false,"family":"Talbot","given":"Ceara J","affiliations":[{"id":85187,"text":"Carnegie Science","active":true,"usgs":false}],"preferred":false,"id":939778,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Meyer, Michael Frederick 0000-0002-8034-9434 mmeyer@usgs.gov","orcid":"https://orcid.org/0000-0002-8034-9434","contributorId":304191,"corporation":false,"usgs":true,"family":"Meyer","given":"Michael","email":"mmeyer@usgs.gov","middleInitial":"Frederick","affiliations":[{"id":37786,"text":"WMA - Observing Systems Division","active":true,"usgs":true}],"preferred":true,"id":939779,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hampton, Stephanie E.","contributorId":178718,"corporation":false,"usgs":false,"family":"Hampton","given":"Stephanie","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":939780,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70268119,"text":"70268119 - 2025 - An empirical Green’s function approach for isolating directivity effects in earthquake ground-motion amplitudes","interactions":[],"lastModifiedDate":"2025-09-22T15:21:31.317811","indexId":"70268119","displayToPublicDate":"2025-06-06T09:54:27","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"An empirical Green’s function approach for isolating directivity effects in earthquake ground-motion amplitudes","docAbstract":"In this study, we apply an empirical Green’s function (eGf) method within a ground‐motion modeling framework to mitigate trade‐offs between source, path, and site effects. Many physical processes contribute to spatial variations in observed ground motions, including earthquake radiation pattern, directivity, variable path attenuation, and site effects. Current nonergodic ground‐motion models use spatially varying coefficients for path and site effects, but they do not address trade‐offs with complex earthquake source effects. To quantify the influence of directivity on ground‐motion amplitudes, we use records from multiple smaller earthquakes with epicenters near that of a larger event. We use these small magnitude events as eGfs and estimate repeatable path and site effects at individual stations, assuming that the average adjustments are not controlled by directivity. We adjust residuals from the larger earthquake using the eGf terms, isolating effects related to the rupture. This method clearly enhances the observed broadband directivity observed in the 2022 M 5.1 and 2007 M 5.4 Alum Rock earthquake ground motions, reinforcing the conclusion that their ruptures were unilateral. For the 2004 M 6.0 Parkfield earthquake, we find a bilateral rupture model better fits the data because variations in rupture velocity, slip rate, and slip distribution seem to have a stronger effect on the ground motions than rupture direction alone. Applying eGf adjustments reduces the standard deviation of the rupture models over the three earthquakes by 32% on average and by up to 57% for the 2022 Alum Rock earthquake, confirming we have effectively removed repeatable effects related to the wave propagation path and site response. We propose a novel measure of the frequency‐dependent directivity amplification strength as the reduction in ground‐motion residual variability gained by fitting a directivity model; for the three earthquakes considered, this parameter varies between 25% and 75%, indicating that directivity can strongly influence ground motions and should be considered in ground‐motion modeling.
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