The National Landscape Conservation System consists of unique and beautiful places across America’s landscapes where identified resources and values are protected and science is highlighted. The mission of the National Landscape Conservation System (NLCS), which is managed by the Bureau of Land Management and is often referred to as the agency’s National Conservation Lands, is to conserve, protect, and restore nationally significant landscapes for their cultural, ecological, and scientific values. This clear inclusion of science in the NLCS mission sets the stage for individual units to serve as places of learning, teaching, discovery, and innovation. Science is an integral part of managing the National Conservation Lands, and science conducted within and across the more than 900 units that make up the NLCS can inform and influence conservation and public land management well beyond its boundaries. Here, we highlight seven core aspects of National Conservation Lands that present valuable science opportunities: (1) the scientific values for which individual units are designated; (2) the many other resources, objects, and values within units; (3) the value of units as “control” sites for understanding the effects of activities such as mineral extraction that commonly occur elsewhere on multiple-use public lands but are often prohibited within National Conservation Lands; (4) the value of units for studying the effects of activities such as recreation that regularly occur and may be intensified on National Conservation Lands; (5) the high visibility of units, which draws strong interest and engagement from scientists, partners, and the public; (6) the functioning of the units as a network managed for a common purpose, which provides an opportunity to explore cross-cutting science questions across widely varying contexts and geographies; and (7) the opportunities units provide to promote and apply Indigenous Knowledge to scientific research to manage natural and cultural resources. Because of all of these characteristics, National Conservation Lands can serve as hubs for basic and applied science that can inform management of all public lands and resources into the future. We highlight these science opportunities through examples from existing units and suggest two actions that could help further science activities and impact on National Conservation Lands.
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Center","active":true,"usgs":true}],"preferred":true,"id":949016,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Klasner, Frederick L. 0000-0002-7615-495X","orcid":"https://orcid.org/0000-0002-7615-495X","contributorId":355730,"corporation":false,"usgs":false,"family":"Klasner","given":"Frederick L.","affiliations":[{"id":84827,"text":"Bureau of Land Management, 440 West 200 South, Suite 500, Salt Lake City, UT 84101","active":true,"usgs":false}],"preferred":false,"id":949017,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70274179,"text":"70274179 - 2025 - USGS addresses needs for lithium calibration and quality control materials for pLIBS analysis","interactions":[],"lastModifiedDate":"2026-03-05T15:13:19.680371","indexId":"70274179","displayToPublicDate":"2025-09-15T09:06:09","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"USGS addresses needs for lithium calibration and quality control materials for pLIBS analysis","docAbstract":"Lithium (Li) is a globally important commodity used for energy storage, national defense, human health, and advanced technologies. Lithium resource development requires identifying deposits with elevated concentrations and optimal mineralogy, typically associated with select clays and pegmatites. Lithium is a light, highly reactive alkali metal with low atomic mass that is difficult to detect and quantify using conventional portable geochemical techniques such as X-ray fluorescence (XRF). However, portable laser-induced breakdown spectroscopy (pLIBS) is a powerful analytical technique for lithium exploration due to its ability to analyze solids quickly with minimal preparation. The expanded utility of pLIBS is hampered by the lack of matrix-matched calibration and quality control (QC) materials. The United States Geological Survey (USGS) has developed in-house lithium calibration and QC materials for lithium in clay and pegmatite matrices to address this limitation. We present the workflow and implementation of a custom-built matrix specific calibration on a SciAps Z-300 pLIBS, using proprietary Profile Builder software. The implementation of the custom calibration and quality control standards enables us to collect semiquantitative results directly from the pLIBS while in the field. Ultimately, this calibration has improved confidence in sample selection and collection in the field, providing more efficient site characterization.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Orkild-Norton, A., Pfaff, K.I., Meyer, J.M., Carolyn Cantwell, and Key, E., 2025, USGS addresses needs for lithium calibration and quality control materials for pLIBS analysis, 18th SGA Biennial Meeting, v. 3, Golden, CO, August 3-7, 2025, p. 1153-1156.","productDescription":"4 p.","startPage":"1153","endPage":"1156","ipdsId":"IP-176065","costCenters":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"links":[{"id":500777,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":500776,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.e-sga.org/publications/conference-proceedings"}],"volume":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Orkild-Norton, A. Rae Ann 0000-0002-5636-6461 rorkild@usgs.gov","orcid":"https://orcid.org/0000-0002-5636-6461","contributorId":5740,"corporation":false,"usgs":true,"family":"Orkild-Norton","given":"A. Rae Ann","email":"rorkild@usgs.gov","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":956789,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pfaff, Katharina I. 0000-0002-6605-2722","orcid":"https://orcid.org/0000-0002-6605-2722","contributorId":362430,"corporation":false,"usgs":true,"family":"Pfaff","given":"Katharina","middleInitial":"I.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":956790,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Meyer, John Michael 0000-0003-2810-9414","orcid":"https://orcid.org/0000-0003-2810-9414","contributorId":297062,"corporation":false,"usgs":true,"family":"Meyer","given":"John","email":"","middleInitial":"Michael","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":956791,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Carolyn Cantwell 0009-0007-0899-1477","orcid":"https://orcid.org/0009-0007-0899-1477","contributorId":367117,"corporation":false,"usgs":false,"family":"Carolyn Cantwell","affiliations":[{"id":12640,"text":"California Geological Survey","active":true,"usgs":false}],"preferred":false,"id":956792,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Key, Erica 0009-0006-0792-6983","orcid":"https://orcid.org/0009-0006-0792-6983","contributorId":367118,"corporation":false,"usgs":false,"family":"Key","given":"Erica","affiliations":[{"id":12640,"text":"California Geological Survey","active":true,"usgs":false}],"preferred":false,"id":956793,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70272163,"text":"70272163 - 2025 - Evaluation of the acute toxicity of the piscicide TFM to Burbot","interactions":[],"lastModifiedDate":"2025-11-18T15:28:39.859386","indexId":"70272163","displayToPublicDate":"2025-09-15T08:23:55","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of the acute toxicity of the piscicide TFM to Burbot","docAbstract":"Non-target animal sensitivity remains a concern when treating Laurentian Great Lakes streams with 4-nitro-3-(trifluoromethyl)phenol (TFM), the main pesticide used to control Sea Lamprey Petromyzon marinus as part of the bi-national Great Lakes Fishery Commission's Sea Lamprey Control Program. Populations of Burbot Lota lota, a historically and culturally important fish, inhabit some of the streams that are treated with TFM. While many species of fish inhabiting the Great Lakes streams have been assessed for sensitivity to TFM, we are not aware of previous research to assess the risk to Burbot. We assessed the sensitivity of Burbot to TFM using replicate 12-hour flow-through diluter toxicity tests. We found Burbot to have a median lethal concentration (LC50) of 9.74 mg/L, while the minimum lethal concentration (LC99.9) for Sea Lamprey was predicted to be 2.5 mg/L in similar waters. The resulting toxicity ratio (LC50 of non-target organism/LC99.9 of Sea Lamprey) of Burbot was 3.90, well above the toxicity ratios for known sensitive species. Our results suggest Burbot are not expected to be adversely affected during a typical TFM stream treatment.
","language":"English","publisher":"The Wildlife Society","doi":"10.1002/jwmg.70110","usgsCitation":"Schloesser, N., Luoma, J., Kirkeeng, C., Wolfe, S.L., Schueller, J., and Thompson, H.M., 2025, Evaluation of the acute toxicity of the piscicide TFM to Burbot: Journal of Wildlife Management, v. 89, no. 8, e70110, 10 p., https://doi.org/10.1002/jwmg.70110.","productDescription":"e70110, 10 p.","ipdsId":"IP-164918","costCenters":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"links":[{"id":496584,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","otherGeospatial":"Great Lakes","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -91.69562748642463,\n 48.05802044710413\n ],\n [\n -92.51117172294536,\n 46.87833671243604\n ],\n [\n -87.99530971862121,\n 41.65815826878868\n ],\n [\n -81.14672357447232,\n 41.21219694603064\n ],\n [\n -75.24489409556779,\n 43.708024038812454\n ],\n [\n -82.95809831046053,\n 47.17556139162485\n ],\n [\n -85.26817194587964,\n 49.47106575418749\n ],\n [\n -91.69562748642463,\n 48.05802044710413\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"89","issue":"8","noUsgsAuthors":false,"publicationDate":"2025-09-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Schloesser, Nicholas 0000-0002-3815-5302","orcid":"https://orcid.org/0000-0002-3815-5302","contributorId":237025,"corporation":false,"usgs":true,"family":"Schloesser","given":"Nicholas","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950285,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luoma, James A. 0000-0003-3556-0190","orcid":"https://orcid.org/0000-0003-3556-0190","contributorId":355611,"corporation":false,"usgs":false,"family":"Luoma","given":"James A.","affiliations":[{"id":37196,"text":"Retired USGS employee","active":true,"usgs":false}],"preferred":false,"id":950286,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kirkeeng, Courtney A. 0000-0002-7141-1216","orcid":"https://orcid.org/0000-0002-7141-1216","contributorId":237026,"corporation":false,"usgs":true,"family":"Kirkeeng","given":"Courtney","middleInitial":"A.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950287,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wolfe, Samantha L. 0000-0001-8563-8836","orcid":"https://orcid.org/0000-0001-8563-8836","contributorId":274999,"corporation":false,"usgs":true,"family":"Wolfe","given":"Samantha","email":"","middleInitial":"L.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950288,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Schueller, Justin R. 0000-0002-7102-3889","orcid":"https://orcid.org/0000-0002-7102-3889","contributorId":213527,"corporation":false,"usgs":true,"family":"Schueller","given":"Justin","middleInitial":"R.","affiliations":[{"id":606,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":true}],"preferred":true,"id":950289,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Thompson, Hannah Mann 0000-0001-8316-3232","orcid":"https://orcid.org/0000-0001-8316-3232","contributorId":362308,"corporation":false,"usgs":false,"family":"Thompson","given":"Hannah","middleInitial":"Mann","affiliations":[{"id":85472,"text":"Upper Midwest Environmental Sciences Center","active":true,"usgs":false}],"preferred":false,"id":950290,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70271695,"text":"70271695 - 2025 - A soil velocity model for improved ground motion simulations in the U. S. Pacific Northwest","interactions":[],"lastModifiedDate":"2025-09-19T15:07:45.204834","indexId":"70271695","displayToPublicDate":"2025-09-15T07:53:03","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":17454,"text":"Seismica","active":true,"publicationSubtype":{"id":10}},"title":"A soil velocity model for improved ground motion simulations in the U. S. Pacific Northwest","docAbstract":"Near-surface seismic velocity structure may significantly impact the intensity, duration, and frequency content of ground shaking during an earthquake. In this study, we compile 649 shear wave velocity (Vs) profiles throughout the U.S. Pacific Northwest and southern British Columbia (PNW) and use these measured profiles to develop a representative soil velocity model for four major Holocene soil provinces: Puget Lowlands, Willamette Valley, fill and alluvium, and `other' soils. The resulting soil velocity model shows good agreement to measured data for a wide range of site conditions, with variability between different geologic domains reflecting fundamental differences in depositional environments. We then show that using this regional soil velocity model in simulations of the 2001 M6.8 Nisqually, Washington earthquake improves the fit to observed high-frequency (≥ 0.5 Hz) ground motions in the Puget Sound region compared to simulations that do not incorporate shallow (≤ 200 m) seismic velocity structure. Overall, this work shows that incorporating localized soil velocity profiles into seismic velocity models is important for accurately estimating high-frequency ground motion and regional seismic hazard in earthquake simulations. Future earthquake simulations and hazard studies in the PNW could incorporate these soil velocity profiles to capture the region's distinct site response characteristics.
","language":"English","publisher":"OJS/PKP","doi":"10.26443/seismica.v4i2.1672","usgsCitation":"Grant, A.R., Wirth, E.A., and Stone, I.P., 2025, A soil velocity model for improved ground motion simulations in the U. S. Pacific Northwest: Seismica, v. 4, no. 2, 16 p., https://doi.org/10.26443/seismica.v4i2.1672.","productDescription":"16 p.","ipdsId":"IP-177573","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":496140,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.26443/seismica.v4i2.1672","text":"Publisher Index Page"},{"id":495803,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -123.85877339027735,\n 49.01554453682621\n ],\n [\n -123.85877339027735,\n 47.33372471262203\n ],\n [\n -121.59818867979942,\n 47.33372471262203\n ],\n [\n -121.59818867979942,\n 49.01554453682621\n ],\n [\n -123.85877339027735,\n 49.01554453682621\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"4","issue":"2","noUsgsAuthors":false,"publicationDate":"2025-09-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Grant, Alex R. 0000-0002-5096-4305","orcid":"https://orcid.org/0000-0002-5096-4305","contributorId":219066,"corporation":false,"usgs":true,"family":"Grant","given":"Alex","middleInitial":"R.","affiliations":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":949044,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wirth, Erin A. 0000-0002-8592-4442","orcid":"https://orcid.org/0000-0002-8592-4442","contributorId":207853,"corporation":false,"usgs":true,"family":"Wirth","given":"Erin","middleInitial":"A.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":949045,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stone, Ian P. 0000-0003-2622-2691","orcid":"https://orcid.org/0000-0003-2622-2691","contributorId":293630,"corporation":false,"usgs":true,"family":"Stone","given":"Ian","middleInitial":"P.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":949046,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70271448,"text":"70271448 - 2025 - Decision support tools for brown pelican management in the northern Gulf of America (Gulf of Mexico)","interactions":[],"lastModifiedDate":"2025-11-21T22:11:02.518963","indexId":"70271448","displayToPublicDate":"2025-09-15T07:45:11","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Decision support tools for brown pelican management in the northern Gulf of America (Gulf of Mexico)","docAbstract":"Management plans with clear priorities can help to achieve brown pelican Pelecanus occidentalis conservation objectives in the northern Gulf of America (Gulf of Mexico). Efforts to establish clear priorities can be hindered by information gaps, especially those related to the uncertainty associated with changing conditions that influence brown pelican populations. We addressed these gaps by creating a model that uses island-specific conditions (e.g., geomorphology; predator-related conditions; brown pelican terrestrial nesting, roosting, and loafing habitats) to predict the nest count as a proxy for breeding pairs on the island. We used the model and 2000–2015 brown pelican nest count data to estimate if breeding pair targets that we identified or estimated for 10 U.S Fish and Wildlife Service Gulf Coast Biological Planning Units were met while accounting for uncertainty. Our results indicate that breeding pair targets were met in 7 of the 10 units by existing conditions. Our confidence in judging nest deficits tended to decrease from west to east because the model over-predicted total nests in the east Gulf Coast. Using an island from our data, we show how the model could be used to quantify the uncertainty of nest count outcomes under simulated changes in island conditions. The model indicated that the island's existing conditions most probably result in nests (probability = 0.51) and that increasing the area of nesting habitat (shrubs) could increase the probability of nests from 49% to 70%. Increasing shrub habitat in the model also increased nest count uncertainty by 60%, but this was due to a greater probability of larger nest counts. Our model suggests that nest count uncertainty could be reduced by improving data on island size, shrub area, and predator presence, depending on the unit and how isolated the island is from the mainland. These tools could help managers understand and incorporate the uncertainty associated with creating island conditions that are intended to help achieve brown pelican conservation objectives.
","language":"English","publisher":"The Wildlife Society","doi":"10.1002/jwmg.70103","usgsCitation":"Cronin, J.P., Tirpak, B., Dale, L.L., Robenski, V.L., Tirpak, J.M., Wilson, B.C., Vermillion, W.G., and Schoolmaster, D.R., 2025, Decision support tools for brown pelican management in the northern Gulf of America (Gulf of Mexico): Journal of Wildlife Management, v. 89, no. 8, e70103, 20 p., https://doi.org/10.1002/jwmg.70103.","productDescription":"e70103, 20 p.","ipdsId":"IP-140380","costCenters":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":495598,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alabama, Florida, Louisiana, Mississippi, Texas","otherGeospatial":"Gulf of America","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -97.5084812535037,\n 29.23655829920672\n ],\n [\n -97.80290228785537,\n 25.370449130055917\n ],\n [\n -80.69650208536123,\n 24.779624492928477\n ],\n [\n -83.47993279622662,\n 30.702187900532124\n ],\n [\n -94.73880975756701,\n 30.697298309312025\n ],\n [\n -97.5084812535037,\n 29.23655829920672\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"89","issue":"8","noUsgsAuthors":false,"publicationDate":"2025-09-15","publicationStatus":"PW","contributors":{"authors":[{"text":"Cronin, James P. 0000-0001-6791-5828 jcronin@usgs.gov","orcid":"https://orcid.org/0000-0001-6791-5828","contributorId":5834,"corporation":false,"usgs":true,"family":"Cronin","given":"James","email":"jcronin@usgs.gov","middleInitial":"P.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":948794,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tirpak, Blair E. 0000-0002-2679-8378","orcid":"https://orcid.org/0000-0002-2679-8378","contributorId":343682,"corporation":false,"usgs":false,"family":"Tirpak","given":"Blair E.","affiliations":[{"id":36188,"text":"U.S. Fish and Wildlife Service","active":true,"usgs":false}],"preferred":false,"id":948795,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dale, Leah L. 0000-0002-3480-9954","orcid":"https://orcid.org/0000-0002-3480-9954","contributorId":243547,"corporation":false,"usgs":false,"family":"Dale","given":"Leah","middleInitial":"L.","affiliations":[{"id":48726,"text":"Cherokee Nations Technology Solutions","active":true,"usgs":false}],"preferred":false,"id":948796,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Robenski, Virginia L.","contributorId":243548,"corporation":false,"usgs":false,"family":"Robenski","given":"Virginia","middleInitial":"L.","affiliations":[{"id":48726,"text":"Cherokee Nations Technology Solutions","active":true,"usgs":false}],"preferred":false,"id":948797,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tirpak, John M. 0000-0003-1937-9754","orcid":"https://orcid.org/0000-0003-1937-9754","contributorId":361417,"corporation":false,"usgs":false,"family":"Tirpak","given":"John","middleInitial":"M.","affiliations":[{"id":6654,"text":"USFWS","active":true,"usgs":false}],"preferred":false,"id":948798,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wilson, Barry C.","contributorId":361418,"corporation":false,"usgs":false,"family":"Wilson","given":"Barry","middleInitial":"C.","affiliations":[{"id":6654,"text":"USFWS","active":true,"usgs":false}],"preferred":false,"id":948799,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Vermillion, William G.","contributorId":361419,"corporation":false,"usgs":false,"family":"Vermillion","given":"William","middleInitial":"G.","affiliations":[{"id":6654,"text":"USFWS","active":true,"usgs":false}],"preferred":false,"id":948800,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Schoolmaster, Donald R. Jr. 0000-0003-0910-4458","orcid":"https://orcid.org/0000-0003-0910-4458","contributorId":221551,"corporation":false,"usgs":true,"family":"Schoolmaster","given":"Donald","suffix":"Jr.","middleInitial":"R.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":948801,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70273972,"text":"70273972 - 2025 - Population structure and movement dynamics of Redband Trout in the Kootenai River basin","interactions":[],"lastModifiedDate":"2026-02-23T16:49:28.185271","indexId":"70273972","displayToPublicDate":"2025-09-14T09:42:17","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Population structure and movement dynamics of Redband Trout in the Kootenai River basin","docAbstract":"Redband Trout Oncorhynchus mykiss gairdneri is a species of high conservation concern in the Kootenai River basin, United States and Canada. However, identifying the specific mechanisms influencing Redband Trout is difficult as its life history structure is largely unknown. Using otolith microchemistry analysis, we found that 18.5% (n = 66) of the fish sampled (n = 329) were a product of mainstem Kootenai River spawning. The remainder were fish (n = 264) that originated from one of 31 tributaries throughout the basin. Redband Trout were captured between 0 and 153 km from their assigned natal tributaries. Most migratory fish originated from tributaries in the uppermost portion of the study area and had migratory mothers. However, a diversity of life history types (e.g., multi-year resident, migratory) was observed in the population. Redband Trout were estimated to outmigrate from natal habitats at a variety of ages (0–3 years) and lengths (12–430 mm). Our results highlight diversity in the population structure of Redband Trout and provide information valuable to conservation efforts in the Kootenai River system. Interestingly, several tributaries identified as natal habitats of Redband Trout contain substantial obstacles originally considered barriers to upstream fish passage. In addition, some streams in the lower portion of the Kootenai River basin with degraded habitat that were not expected to contribute Redband Trout had natal assignments. These observations indicate previously unknown sources of Redband Trout and support the notion that improved fish passage in disconnected and degraded streams could increase production of Redband Trout throughout the Kootenai River basin. Restoration efforts in the mainstem that include considerations for spawning and natal habitat may also aid in conservation efforts for Redband Trout. Our research demonstrates the value of microchemistry in planning and evaluating habitat restoration to recover fishes in large rivers.
","language":"English","publisher":"Wiley","doi":"10.1002/rra.70027","usgsCitation":"Ghere, C.L., Willmes, M., Hardy, R.S., Ross, T.J., Dunnigan, J., Wilson, S., Carleton, S., Quist, M., 2025, Population structure and movement dynamics of Redband Trout in the Kootenai River basin: River Research and Applications, v. 41, no. 10, p. 2218-2233, https://doi.org/10.1002/rra.70027.","productDescription":"16 p.","startPage":"2218","endPage":"2233","ipdsId":"IP-173297","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":500421,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, Idaho, Montana","otherGeospatial":"Kootenai River basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.54820217627145,\n 49.255751254397154\n ],\n [\n -116.54820217627145,\n 48.57844550786413\n ],\n [\n -115.27704937851809,\n 48.57844550786413\n ],\n [\n -115.27704937851809,\n 49.255751254397154\n ],\n [\n -116.54820217627145,\n 49.255751254397154\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"41","issue":"10","noUsgsAuthors":false,"publicationDate":"2025-09-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Ghere, Courtnie L.","contributorId":352032,"corporation":false,"usgs":false,"family":"Ghere","given":"Courtnie","middleInitial":"L.","affiliations":[{"id":36394,"text":"University of Idaho","active":true,"usgs":false}],"preferred":false,"id":955955,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Willmes, Malte","contributorId":198500,"corporation":false,"usgs":false,"family":"Willmes","given":"Malte","email":"","affiliations":[],"preferred":false,"id":955956,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hardy, Ryan S.","contributorId":167032,"corporation":false,"usgs":false,"family":"Hardy","given":"Ryan","email":"","middleInitial":"S.","affiliations":[{"id":6764,"text":"Idaho Department of Fish and Game, Nampa, Idaho","active":true,"usgs":false}],"preferred":false,"id":955957,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ross, Tyler J.","contributorId":366471,"corporation":false,"usgs":false,"family":"Ross","given":"Tyler","middleInitial":"J.","affiliations":[{"id":36224,"text":"Idaho Department of Fish and Game","active":true,"usgs":false}],"preferred":false,"id":955958,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dunnigan, James","contributorId":279960,"corporation":false,"usgs":false,"family":"Dunnigan","given":"James","affiliations":[{"id":48633,"text":"MT FWP","active":true,"usgs":false}],"preferred":false,"id":955959,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wilson, Sean","contributorId":352033,"corporation":false,"usgs":false,"family":"Wilson","given":"Sean","affiliations":[{"id":36224,"text":"Idaho Department of Fish and Game","active":true,"usgs":false}],"preferred":false,"id":955960,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Carleton, Scott","contributorId":217295,"corporation":false,"usgs":false,"family":"Carleton","given":"Scott","email":"","affiliations":[{"id":37461,"text":"fws","active":true,"usgs":false}],"preferred":false,"id":955961,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Quist, Michael C. 0000-0001-8268-1839","orcid":"https://orcid.org/0000-0001-8268-1839","contributorId":272016,"corporation":false,"usgs":true,"family":"Quist","given":"Michael C.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":955962,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70274045,"text":"70274045 - 2025 - Breeder turnover, harvest, and food affect recruitment of young nonbreeders in groups of gray wolves","interactions":[],"lastModifiedDate":"2026-02-20T16:48:52.72485","indexId":"70274045","displayToPublicDate":"2025-09-14T09:42:11","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":774,"text":"Animal Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Breeder turnover, harvest, and food affect recruitment of young nonbreeders in groups of gray wolves","docAbstract":"Groups of cooperative breeders typically have social hierarchies, with breeders at the top guiding group decisions and influencing the behavior of subordinates in the group. Because of breeders' strong influence on group dynamics and behaviors, breeder turnover can affect the survival of remaining group members. We lack a solid understanding of the nuanced but important effects of breeder turnover on group composition. I first asked how harvest (i.e., hunting and trapping) affected rates of breeder turnover in groups of gray wolves (Canis lupus) in Idaho, USA, from 2008 to 2020. Then, I asked how breeder turnover, group size, and food availability affected the recruitment of 1- and 2-year-old nonbreeders into groups. Harvest was associated with an increase in breeding female, but not breeding male, turnover. Breeding female turnover was negatively associated with the probability of 1-year-old, but not 2-year-old, nonbreeders being in a group the following year. The only significant variable associated with the recruitment of 2-year-old nonbreeders into groups was sex, as males were less likely than females to be present in groups at time(t+1). Finally, an index of prey biomass was positively associated with the probability of 1-year-olds being present in groups at time(t+1) (i.e., apparent pup survival to age 1). I show that harvest, social factors such as breeder turnover, and food availability influence the presence of young nonbreeders in groups, ultimately affecting group composition in a cooperative breeder.
","language":"English","publisher":"Zoological Society of London","doi":"10.1111/acv.70034","usgsCitation":"Ausband, D.E., 2025, Breeder turnover, harvest, and food affect recruitment of young nonbreeders in groups of gray wolves: Animal Conservation, 9 p., https://doi.org/10.1111/acv.70034.","productDescription":"9 p.","ipdsId":"IP-169777","costCenters":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"links":[{"id":500351,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","edition":"Online First","noUsgsAuthors":false,"publicationDate":"2025-09-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Ausband, David Edward 0000-0001-9204-9837","orcid":"https://orcid.org/0000-0001-9204-9837","contributorId":275329,"corporation":false,"usgs":true,"family":"Ausband","given":"David","email":"","middleInitial":"Edward","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":956286,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70271460,"text":"70271460 - 2025 - Uppermost Oligocene and Miocene diatom biostratigraphy of Ocean Drilling Program Sites 682 and 688 from the Peru Margin","interactions":[],"lastModifiedDate":"2025-09-16T14:40:56.866315","indexId":"70271460","displayToPublicDate":"2025-09-14T09:35:50","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"Uppermost Oligocene and Miocene diatom biostratigraphy of Ocean Drilling Program Sites 682 and 688 from the Peru Margin","docAbstract":"The diatom biochronology of ODP (Ocean Drilling Program) Holes 682A and 688E provides a detailed framework for refiningMiocene diatom zonation in the East Pisco Basin of southern Peru, establishing both a nearly complete offshore reference section and a correlation tool for the fragmentary onshore vertebrate-bearing deposits. This new biostratigraphic record documents a complete succession of low latitude and/or northeastern Pacific Miocene diatom zones, with two notable exceptions: a dissolution and/or hiatus interval (*16.5–14 Ma) during the Middle Miocene Climatic Optimum and a likely earliest Miocene hiatus (*23.4–21.8 Ma). Although eastern equatorial Pacific diatom zones characterize the Upper Oligocene and Lower Miocene strata, an increased abundance of cool-water diatoms that lived during the Middle and Late Miocene allows better application of northeast Pacific diatom zones, except during the Messinian (7–6 Ma) when warm-water diatoms predominate. The effects of eustatic sea level and tectonics on depositional sequences in the EPB and in offshore cores off central Peru are discussed.
","language":"English","publisher":"Micropaleontology Press","doi":"10.29041/strat.22.3.01","usgsCitation":"Coenen, J., Barron, J.A., and Thomas J. DeVries, 2025, Uppermost Oligocene and Miocene diatom biostratigraphy of Ocean Drilling Program Sites 682 and 688 from the Peru Margin: Stratigraphy, v. 22, no. 3, p. 155-180, https://doi.org/10.29041/strat.22.3.01.","productDescription":"26 p.","startPage":"155","endPage":"180","ipdsId":"IP-175163","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":495595,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Peru","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -80,\n -7.809435147132788\n ],\n [\n -80,\n -15\n ],\n [\n -75,\n -15\n ],\n [\n -75,\n -7.809435147132788\n ],\n [\n -80,\n -7.809435147132788\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"22","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Coenen, Jason 0000-0001-5848-5424","orcid":"https://orcid.org/0000-0001-5848-5424","contributorId":356809,"corporation":false,"usgs":false,"family":"Coenen","given":"Jason","affiliations":[{"id":16602,"text":"University of Nebraska, Lincoln","active":true,"usgs":false}],"preferred":false,"id":948829,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barron, John A. 0000-0002-9309-1145 jbarron@usgs.gov","orcid":"https://orcid.org/0000-0002-9309-1145","contributorId":2222,"corporation":false,"usgs":true,"family":"Barron","given":"John","email":"jbarron@usgs.gov","middleInitial":"A.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":948830,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thomas J. DeVries","contributorId":361444,"corporation":false,"usgs":false,"family":"Thomas J. DeVries","affiliations":[{"id":86275,"text":"Burke Museum, Washington University","active":true,"usgs":false}],"preferred":false,"id":948831,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70271692,"text":"70271692 - 2025 - Calcareous nannofossil biostratigraphy and floral response to environmental changes recorded in the Pliocene Yorktown Formation, southeastern Virginia, USA","interactions":[],"lastModifiedDate":"2025-09-19T14:00:53.937709","indexId":"70271692","displayToPublicDate":"2025-09-14T08:55:37","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3481,"text":"Stratigraphy","active":true,"publicationSubtype":{"id":10}},"title":"Calcareous nannofossil biostratigraphy and floral response to environmental changes recorded in the Pliocene Yorktown Formation, southeastern Virginia, USA","docAbstract":"The Pliocene Yorktown Formation, deposited on the U.S. Mid-Atlantic Coastal Plain, has played an important role in advancing our knowledge of Pliocene paleoclimate. To refine the age and paleoenvironment of the Yorktown Formation, we analyzed the calcareous nannofossil assemblage and compared it with variations in lithology and calculated sea surface temperature (SST) from previous studies. The Yorktown Formation in the studied sections consists of, in ascending order, the Sunken Meadow, Rushmere, Morgarts Beach, and Moore House members. Sediment samples were collected from these units and analyzed for calcareous nannoplankton assemblages. The last occurrences of both Reticulofenestra pseudoumbilicus (3.82 Ma) and Sphenolithus spp. (3.61 Ma) were recognized within the Sunken Meadow Member. Discoaster tamalis and Discoaster surculus sporadically occurred within the Rushmere Member, but no specimens of the genus Sphenolithus were recorded, suggesting that this unit was deposited sometime between 3.61–2.76Ma. Rare occurrences of the genus Discoaster made it difficult to constrain the age of the Morgarts Beach and Moore House members, but they are most likely deposited before re-entrance of small Gephyrocapsa (ca. 2.5 Ma), supporting previous age estimates based on planktic foraminiferal biostratigraphy and variation in alkenone-based sea-surface temperature estimates. The abrupt decline of both cold-water species (Coccolithus pelagicus) and coastal species (Helicosphaera spp.) is associated with a rise in SST within the Rushmere Member just below the Morgarts Beach Member, and it may reflect a rapid transgression following the global sea-level low stand associated with Marine Isotope Stage (MIS)M2.
","language":"English","publisher":"Micropaleontological Press","doi":"10.29041/strat.22.3.02","usgsCitation":"Utsunomiya, M., and Dowsett, H.J., 2025, Calcareous nannofossil biostratigraphy and floral response to environmental changes recorded in the Pliocene Yorktown Formation, southeastern Virginia, USA: Stratigraphy, v. 22, no. 3, p. 181-193, https://doi.org/10.29041/strat.22.3.02.","productDescription":"13 p.","startPage":"181","endPage":"193","ipdsId":"IP-176133","costCenters":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":495781,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Virginia","otherGeospatial":"Yorktown Formation","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -76.98737121401622,\n 37.28802783610621\n ],\n [\n -76.98737121401622,\n 37.023565116443024\n ],\n [\n -76.52207462557801,\n 37.023565116443024\n ],\n [\n -76.52207462557801,\n 37.28802783610621\n ],\n [\n -76.98737121401622,\n 37.28802783610621\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"22","issue":"3","noUsgsAuthors":false,"publicationDate":"2025-09-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Utsunomiya, Masayuki","contributorId":347801,"corporation":false,"usgs":false,"family":"Utsunomiya","given":"Masayuki","affiliations":[{"id":83252,"text":"Research Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology","active":true,"usgs":false}],"preferred":false,"id":949038,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dowsett, Harry J. 0000-0003-1983-7524","orcid":"https://orcid.org/0000-0003-1983-7524","contributorId":269579,"corporation":false,"usgs":true,"family":"Dowsett","given":"Harry","email":"","middleInitial":"J.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":949039,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70271453,"text":"70271453 - 2025 - Reframing fish passage prioritization for human nutrition outcomes","interactions":[],"lastModifiedDate":"2025-11-21T22:09:23.791782","indexId":"70271453","displayToPublicDate":"2025-09-13T09:43:53","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1547,"text":"Environmental Management","active":true,"publicationSubtype":{"id":10}},"title":"Reframing fish passage prioritization for human nutrition outcomes","docAbstract":"Water control infrastructure forms barriers that fragment river habitats, reducing aquatic biodiversity and the ecosystem services it provides. Irrigation infrastructure, for example, although implemented to support food production, highlights problematic trade-offs against wild food systems like inland fisheries which are a critical food resource for tens of millions of people, particularly in tropical countries. To reduce fragmentation at a broad range of barriers, fish passage technology is sometimes implemented to support migrating fish, aided by frameworks designed to prioritize barriers for remediation. This study critically evaluated 93 fish passage barrier prioritization frameworks globally to explore how they could strategically guide fish passage investments in tropical contexts and identify criteria relevant to delivering on nutrition security outcomes. Results showed prioritization frameworks were ill-equipped to support the broader human development goals that may drive fish passage investments in tropical countries, such as supporting human nutrition under United Nations Sustainable Development Goal (SDG) 2: Zero Hunger. Tropical contexts were underrepresented despite substantial recent fish passage investment, whereas temperate and conservation focused frameworks, particularly from North America, dominated. These findings prompt reflection on the inherent biases in fish passage barrier prioritization frameworks and criteria. Improving understanding of and collaboration with local partners to integrate SDG 2 into future prioritization frameworks could improve fish passage infrastructure and help support better nutrition and food production for communities.
","language":"English","publisher":"Springer","doi":"10.1007/s00267-025-02271-6","usgsCitation":"Duncan, N., Horta, A., Conallin, J., Marsden, T., Lynch, A.J., and Stuart, I., 2025, Reframing fish passage prioritization for human nutrition outcomes: Environmental Management, v. 75, p. 3401-3417, https://doi.org/10.1007/s00267-025-02271-6.","productDescription":"17 p.","startPage":"3401","endPage":"3417","ipdsId":"IP-179174","costCenters":[{"id":36940,"text":"National Climate Adaptation Science Center","active":true,"usgs":true}],"links":[{"id":496350,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s00267-025-02271-6","text":"Publisher Index Page"},{"id":495597,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"75","noUsgsAuthors":false,"publicationDate":"2025-09-13","publicationStatus":"PW","contributors":{"authors":[{"text":"Duncan, Nicolette","contributorId":361437,"corporation":false,"usgs":false,"family":"Duncan","given":"Nicolette","affiliations":[{"id":40173,"text":"Charles Sturt University","active":true,"usgs":false}],"preferred":false,"id":948809,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Horta, Ana","contributorId":361438,"corporation":false,"usgs":false,"family":"Horta","given":"Ana","affiliations":[{"id":40173,"text":"Charles Sturt University","active":true,"usgs":false}],"preferred":false,"id":948810,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conallin, John","contributorId":220478,"corporation":false,"usgs":false,"family":"Conallin","given":"John","email":"","affiliations":[{"id":40173,"text":"Charles Sturt University","active":true,"usgs":false}],"preferred":false,"id":948811,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Marsden, Tim","contributorId":361440,"corporation":false,"usgs":false,"family":"Marsden","given":"Tim","affiliations":[{"id":86273,"text":"Australasian Fish Passage Services Pty Ltd","active":true,"usgs":false}],"preferred":false,"id":948812,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lynch, Abigail J. 0000-0001-8449-8392","orcid":"https://orcid.org/0000-0001-8449-8392","contributorId":204271,"corporation":false,"usgs":true,"family":"Lynch","given":"Abigail","middleInitial":"J.","affiliations":[{"id":411,"text":"National Climate Change and Wildlife Science Center","active":true,"usgs":true}],"preferred":true,"id":948813,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stuart, Ivor","contributorId":361442,"corporation":false,"usgs":false,"family":"Stuart","given":"Ivor","affiliations":[{"id":40173,"text":"Charles Sturt University","active":true,"usgs":false}],"preferred":false,"id":948814,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70271451,"text":"70271451 - 2025 - Alteration mapping in granitic gneiss using handheld geophysical and geochemical instruments: Implications for iron oxide-apatite and rare earth elements exploration","interactions":[],"lastModifiedDate":"2025-09-16T14:19:09.963501","indexId":"70271451","displayToPublicDate":"2025-09-13T09:11:59","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":22359,"text":"Ore and Energy Resource Geology","active":true,"publicationSubtype":{"id":10}},"title":"Alteration mapping in granitic gneiss using handheld geophysical and geochemical instruments: Implications for iron oxide-apatite and rare earth elements exploration","docAbstract":"The Cretaceous Mancos Shale is a geologic source of selenium in the lower Gunnison River Basin. Natural weathering processes and human activity mobilize selenium from the Mancos Shale and derived materials, and surface water, groundwater, and sediment all affect the transport of selenium from source areas to receiving streams and biota. Selenium accumulates through the aquatic food chain, and its toxic effects can result in invertebrate mortality and mortality, decreased reproduction, and deformities to fish and birds. The Bureau of Reclamation, in cooperation with the State of Colorado and Gunnison River Basin water users, is implementing a Selenium Management Program to reduce selenium concentrations in the lower Gunnison River Basin of Colorado. Goals of the Selenium Management Program are to (1) achieve compliance with the State of Colorado chronic aquatic-life standard for dissolved selenium (4.6 micrograms per liter) in the Gunnison River near Grand Junction, Colorado; (2) sufficiently improve water-quality conditions to assist in the recovery of endangered species in the Gunnison and Colorado Rivers by reducing selenium concentrations; and (3) support continued water uses in the basin.
Many previous studies have contributed to the understanding of selenium in the environment; however, monitoring and research data gaps exist in the lower Gunnison River Basin. The purpose of this report is to summarize information regarding selenium in the lower Gunnison River Basin and describe strategies for scientific research and monitoring to potentially improve understanding of selenium sources; processes affecting the mobilization, transport, and fate of selenium; and the effects of selenium-mitigation projects in the lower Gunnison River Basin. Monitoring and research data gaps discussed in this report include geologic mapping and geochemical source characterization, long-term and ongoing monitoring of the surface-water and groundwater networks, developing and refining statistical models, characterizing selenium on suspended sediment, modeling selenium in the food web, evaluating best management practices, and more.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston VA","doi":"10.3133/cir1559","collaboration":"Prepared in cooperation with the Colorado Water Conservation Board, the Bureau of Reclamation, the Colorado River Water Conservation District, the U.S. Fish and Wildlife Service, the Bureau of Land Management, and the Natural Resources Conservation Service","usgsCitation":"Gidley, R.G., Leib, K.J., and Williams, C.A., 2025, Summary of selenium in the lower Gunnison River Basin, Colorado—Information and data gaps: U.S. Geological Survey Circular 1559, 44 p., https://doi.org/10.3133/cir1559.","productDescription":"vi, 44 p.","onlineOnly":"Y","ipdsId":"IP-139023","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"links":[{"id":495449,"rank":5,"type":{"id":39,"text":"HTML Document"},"url":"https://pubs.usgs.gov/publication/cir1559/full","text":"Report","linkFileType":{"id":5,"text":"html"},"description":"Circular 1559"},{"id":496026,"rank":6,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_118831.htm","linkFileType":{"id":5,"text":"html"}},{"id":495259,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1559/cir1559.pdf","text":"Report","size":"36.9 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Circular 1559"},{"id":495258,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1559/coverthb.jpg"},{"id":495444,"rank":4,"type":{"id":31,"text":"Publication XML"},"url":"https://pubs.usgs.gov/circ/1559/cir1559.xml"},{"id":495443,"rank":3,"type":{"id":34,"text":"Image Folder"},"url":"https://pubs.usgs.gov/circ/1559/images"}],"country":"United States","state":"Colorado","otherGeospatial":"Lower Gunnison River basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -109,\n 39.5\n ],\n [\n -109,\n 37.5\n ],\n [\n -106.5,\n 37.5\n ],\n [\n -106.5,\n 39.5\n ],\n [\n -109,\n 39.5\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","contact":"Director, Colorado Water Science Center
U.S. Geological Survey
Box 25046, Mail Stop 415
Denver, CO 80225
A mineral systems approach to mineral exploration provides a comprehensive framework for understanding ore deposit formation by examining the geodynamic, magmatic, hydrothermal, and sedimentary processes responsible for mineralization, alteration, and remobilization of economic mineral deposits. Temporal and thermal constraints on ore genesis are crucial for refining mineral system models and guiding predictive exploration strategies. Geochronology and thermochronology offer invaluable insights into the timing and thermal evolution of ore-forming processes, whereas isotopic analyses provide critical information on the source and geochemical history of ore-forming fluids. Combining these methodologies have proven highly effective for mineral exploration in regions like Australia, however, their combined application has been limited in the United States.
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","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society of Geology Applied to Mineral Deposits","usgsCitation":"Thomson, K.D., Hillenbrand, I.W., Gilmer, A.K., Morgan, L.E., Engle, Z.T., and Miller, A.T., 2025, Enhancing mineral systems exploration through geochronology, thermochronology, and isotope analysis: USGS Geochron and USGS Isotope databases, 18th SGA Biennial Meeting, v. 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0000-0003-2801-3674","orcid":"https://orcid.org/0000-0003-2801-3674","contributorId":299032,"corporation":false,"usgs":true,"family":"Hillenbrand","given":"Ian","email":"","middleInitial":"William","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":947583,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gilmer, Amy K. 0000-0001-5038-8136","orcid":"https://orcid.org/0000-0001-5038-8136","contributorId":218307,"corporation":false,"usgs":true,"family":"Gilmer","given":"Amy","email":"","middleInitial":"K.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":947584,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Morgan, Leah E. 0000-0001-9930-524X lemorgan@usgs.gov","orcid":"https://orcid.org/0000-0001-9930-524X","contributorId":176174,"corporation":false,"usgs":true,"family":"Morgan","given":"Leah","email":"lemorgan@usgs.gov","middleInitial":"E.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":947585,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Engle, Zachary T. 0000-0002-6412-7727","orcid":"https://orcid.org/0000-0002-6412-7727","contributorId":300814,"corporation":false,"usgs":true,"family":"Engle","given":"Zachary","email":"","middleInitial":"T.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":947586,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miller, Anna T.","contributorId":360754,"corporation":false,"usgs":false,"family":"Miller","given":"Anna","middleInitial":"T.","affiliations":[{"id":40487,"text":"USGS (former employee)","active":true,"usgs":false}],"preferred":false,"id":947587,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70271358,"text":"70271358 - 2025 - Origin of the high Pd/Pt ratio of the J-M Reef, Stillwater Complex Montana USA","interactions":[],"lastModifiedDate":"2025-09-17T15:50:42.913471","indexId":"70271358","displayToPublicDate":"2025-09-12T10:47:37","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":18,"text":"Abstract or summary"},"title":"Origin of the high Pd/Pt ratio of the J-M Reef, Stillwater Complex Montana USA","docAbstract":"The J-M Reef of the Stillwater Complex exhibits a high and consistent Pd/Pt ratio (~3.8). This ratio results from the equilibration of an immiscible sulfide liquid with a relatively high Pd/Pt silicate melt rather than an unusually Pd- and Pt-enriched parental melt. Numerical modeling suggests that the original silicate melt contained typical mantle-derived concentrations of Pd and Pt (~10–20 ppb Pd/Pt ~1). The partitioning of Pt and Pd between sulfide liquid and silicate melt alone cannot explain the consistently high Pd/Pt ratio across variable melt-to-sulfide mass ratios (R factors). Instead Pt-depletion caused by the early fractionation of Pt-alloy from S-undersaturated silicate magma likely established the high Pd/Pt signature. High Pd/Pt ratios can form through batch equilibration of sulfide liquid with silicate melt if partition coefficients are extremely high (>10⁶). Alternatively Pd enrichment may result from sulfide upgrading within the resident footwall mush under smaller partition coefficients (10⁴–10⁶) in this model the instantaneous R factors remain low (R ≈ 100–700). This limits the impact of Pt and Pd partitioning on sulfide composition and helps explain the Pd-enriched character of the J-M Reef.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Jenkins, M., and Smith, W.D., 2025, Origin of the high Pd/Pt ratio of the J-M Reef, Stillwater Complex Montana USA, 18th SGA Biennial Meeting, v. II, Golden, CO, August 3-7, 2025, p. 603-606.","productDescription":"4 p.","startPage":"603","endPage":"606","ipdsId":"IP-175537","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":495641,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":495640,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.e-sga.org/publications/conference-proceedings","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Montana","otherGeospatial":"J-M Reef Stillwater Complex","volume":"II","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Jenkins, Michael 0000-0002-4261-409X mjenkins@usgs.gov","orcid":"https://orcid.org/0000-0002-4261-409X","contributorId":172433,"corporation":false,"usgs":true,"family":"Jenkins","given":"Michael","email":"mjenkins@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":948210,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, William D.","contributorId":361061,"corporation":false,"usgs":false,"family":"Smith","given":"William","middleInitial":"D.","affiliations":[{"id":36909,"text":"CSIRO","active":true,"usgs":false}],"preferred":false,"id":948211,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70270174,"text":"70270174 - 2025 - Evidence for offset of Cretaceous plutons by the Tintina fault in eastern Alaska: Implications for regional metallogeny","interactions":[],"lastModifiedDate":"2025-09-19T15:36:46.95571","indexId":"70270174","displayToPublicDate":"2025-09-12T10:28:51","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Evidence for offset of Cretaceous plutons by the Tintina fault in eastern Alaska: Implications for regional metallogeny","docAbstract":"Cretaceous magmatism in eastern interior Alaska is voluminous, but temporally and spatially diverse – suggestive of varying sources and drivers. More than 150 new U-Pb zircon and more than 500 geochemical analyses of Cretaceous plutonic units allow for the grouping of distinct plutonic suites. Magmatism was continuous from 120-66 Ma but can be grouped into temporally distinct pulses from ca. 115-100 Ma, 100-90 Ma, and 75-66 Ma. Geochemical diversity occurs during each pulse, further distinguishing multiple suites. Diverse metallogenic epochs are strongly correlated to pluton chemistry. Mineralization is largely absent prior to 108 Ma. From 108-100 Ma, plutonism is coeval with sparse, but notable Au-quartz veins with variable Bi, As, W, and Mo. From 100-90 Ma, intrusion-related mineralization zones from Au-Cu(-Bi) and U-Th in the northwest to central Au- Bi-As-Te(-W), and Mo-W to the southeast. Porphyry style Cu-Mo(-Au) occurrences occur with the latest Cretaceous plutons emplaced from 75-66 Ma . Restoration of ~450 km of dextral movement on the Tintina fault and comparison of metallogenic and geochemical characteristics of Alaska plutons suggest 100-90 Ma plutons may be the continuation of the metallogenically significant Tombstone, Mayo, and Tungsten suites from the Yukon.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society of Geology Applied to Mineral Deposits","usgsCitation":"Kreiner, D.C., Todd, E., Jones, J.V., Holm-Denoma, C., Pianowski, L., and O’Sullivan, P., 2025, Evidence for offset of Cretaceous plutons by the Tintina fault in eastern Alaska: Implications for regional metallogeny, 18th SGA Biennial Meeting, v. 1, Golden, CO, August 3-7, 2025, p. 29-32.","productDescription":"4 p.","startPage":"29","endPage":"32","ipdsId":"IP-177542","costCenters":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"links":[{"id":495807,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -148.35962861711747,\n 66.93683184233925\n ],\n [\n -152.5099193605727,\n 65.44850930821072\n ],\n [\n -151.98004460356876,\n 64.60419684949497\n ],\n [\n -141.0348460065452,\n 63.034342184922565\n ],\n [\n -141.0348460065452,\n 66.21324024800344\n ],\n [\n -148.35962861711747,\n 66.93683184233925\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Kreiner, Douglas C. 0000-0002-4405-1403","orcid":"https://orcid.org/0000-0002-4405-1403","contributorId":220474,"corporation":false,"usgs":true,"family":"Kreiner","given":"Douglas","email":"","middleInitial":"C.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":945642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Todd, Erin 0000-0002-4871-9730 etodd@usgs.gov","orcid":"https://orcid.org/0000-0002-4871-9730","contributorId":202811,"corporation":false,"usgs":true,"family":"Todd","given":"Erin","email":"etodd@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":945643,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jones, James V. III 0000-0002-6602-5935 jvjones@usgs.gov","orcid":"https://orcid.org/0000-0002-6602-5935","contributorId":201245,"corporation":false,"usgs":true,"family":"Jones","given":"James","suffix":"III","email":"jvjones@usgs.gov","middleInitial":"V.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":945644,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Holm-Denoma, Christopher S. 0000-0003-3229-5440","orcid":"https://orcid.org/0000-0003-3229-5440","contributorId":219763,"corporation":false,"usgs":true,"family":"Holm-Denoma","given":"Christopher S.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":945645,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pianowski, Laura 0000-0002-5346-8251","orcid":"https://orcid.org/0000-0002-5346-8251","contributorId":218817,"corporation":false,"usgs":true,"family":"Pianowski","given":"Laura","email":"","affiliations":[],"preferred":true,"id":945646,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"O’Sullivan, Paul 0000-0002-7247-5107","orcid":"https://orcid.org/0000-0002-7247-5107","contributorId":254377,"corporation":false,"usgs":false,"family":"O’Sullivan","given":"Paul","email":"","affiliations":[{"id":51089,"text":"Geosep Services","active":true,"usgs":false}],"preferred":false,"id":945647,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70271437,"text":"70271437 - 2025 - The role of alkali bicarbonate-sulfate brines in the genesis of carbonatite REE resources at the Bear Lodge Alkaline Complex, Wyoming","interactions":[],"lastModifiedDate":"2026-02-04T14:05:18.896474","indexId":"70271437","displayToPublicDate":"2025-09-12T10:28:24","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The role of alkali bicarbonate-sulfate brines in the genesis of carbonatite REE resources at the Bear Lodge Alkaline Complex, Wyoming","docAbstract":"Rare-earth element (REE) resources in the Bear Lodge Alkaline Complex, Wyoming, are hosted in a variably leached carbonatite dike swarm spatially related to bodies of diatreme breccia. This study examines fluid inclusions in carbonatite dikes, peripheral fluorite breccias, and smoky quartz veins to reconstruct the physiochemical conditions of REE mineralization. Results reveal a multi-stage evolution of carbonatitic fluids: 1) high-temperature (330–432°C), CO2-rich magmatic fluids, 2) REE-enriched alkali bicarbonate-sulfate brines, and 3) low-temperature meteoric (117–182°C) or diluted magmatic fluids. Multiphase inclusions (stage-2) contain burbankite, nahcolite, and alkali sulfate daughter crystals, linking the brines to early burbankite [(Na,Ca)3(Sr,Ba,REE)3(CO3)5] mineralization in carbonatite. REE mobility has been linked to the stability of aqueous complexes with ligands such as Cl-, SO42-, and HCO3-. However, light REEs were not initially transported significant distances, rather they crystallized as burbankite from brines or brine-melts associated with the carbonatite magma. Crystallization of burbankite removed Na from the system, leaving residual fluids with high K/Na ratios and promoting potassic fenitization throughout the complex. Fractionation of light and heavy REEs and involvement of low temperature (<300°C), high K/Na bicarbonate brines may have facilitated transport and formation of peripheral occurrences that are more enriched in heavy REEs at Bear Lodge.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Andersen, A.K., Olinger, D., and Bennett, M.M., 2025, The role of alkali bicarbonate-sulfate brines in the genesis of carbonatite REE resources at the Bear Lodge Alkaline Complex, Wyoming, 18th SGA Biennial Meeting, v. 2, Golden, CO, August 3-7, 2025, p. 619-622.","productDescription":"4 p.","startPage":"619","endPage":"622","ipdsId":"IP-175605","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":495474,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.e-sga.org/publications/conference-proceedings","linkFileType":{"id":5,"text":"html"}},{"id":495633,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"Bear Lodge Alkaline Complex","volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Andersen, Allen K. 0000-0002-6865-2561","orcid":"https://orcid.org/0000-0002-6865-2561","contributorId":217476,"corporation":false,"usgs":true,"family":"Andersen","given":"Allen","email":"","middleInitial":"K.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":948756,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Olinger, Danielle A. 0000-0001-8375-5852 dolinger@usgs.gov","orcid":"https://orcid.org/0000-0001-8375-5852","contributorId":201968,"corporation":false,"usgs":true,"family":"Olinger","given":"Danielle A.","email":"dolinger@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":948757,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bennett, Mitchell M. 0000-0001-9533-9557 mbennett@usgs.gov","orcid":"https://orcid.org/0000-0001-9533-9557","contributorId":199379,"corporation":false,"usgs":true,"family":"Bennett","given":"Mitchell","email":"mbennett@usgs.gov","middleInitial":"M.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":948758,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70271465,"text":"70271465 - 2025 - Low-sulfidation epithermal deposits of the central Basin and Range Province, USA","interactions":[],"lastModifiedDate":"2025-09-17T15:20:27.013872","indexId":"70271465","displayToPublicDate":"2025-09-12T10:27:57","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Low-sulfidation epithermal deposits of the central Basin and Range Province, USA","docAbstract":"The Basin and Range Province is host to many important low-sulfidation epithermal deposits. Within this broad zone of extension, epithermal deposits are hosted by specific areas of Miocene and younger bimodal volcanism. In northern Nevada, rifting and related volcanic activity occurred in response to thermal bulging during the development of the Yellowstone hotspot. The Colorado River Extensional Corridor in southern Nevada, adjoining eastern California and northwestern Arizona, is a major zone of Miocene crustal extension formed during the transformation of the western margin of North America from a convergent to a transform plate boundary. The style of mineralization in the low-sulfidation epithermal deposits in these areas is strongly controlled by the nature of the volcanic successions. Highgrade, low-tonnage deposits are commonly found in flow-dominated volcanic successions where ore deposition occurred through short-lived periods of fluid flashing. In contrast, low-grade, large-tonnage deposits are more commonly located in clastic-dominated successions where fluid infiltration of the permeable hosts and cooling predominated.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Monecke, T., Terry, L.R., Tharalson, E., Reynolds, T.J., Seitter, G., Taksavasu, T., and Anderson, E., 2025, Low-sulfidation epithermal deposits of the central Basin and Range Province, USA, 18th SGA Biennial Meeting, v. 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This is the case in Hawaii, where avian malaria is devastating native forest birds that are highly susceptible to non-native diseases. However, mosquito trapping is difficult and labor intensive. A typical operation requires traps to be visited multiple times within a 24-hour period to control their active components and batteries. For example, traps for nocturnal mosquitoes require trap fans and carbon dioxide (CO2) tanks turned on in the evening and then turned off the following morning, with batteries changed frequently. For traps in very remote locations, this frequent attendance accrues considerable cost and personnel time. To help minimize field efforts required for maintaining mosquito trapping arrays, we developed an automated power system to operate the mosquito traps. The traps can be set to operate on a schedule using a built-in timer, eliminating the need for personnel to manually turn traps on and off. Additionally, this system is powered by a solar-recharged battery so that the system can run indefinitely in many field locations. We tested the system at ‘Āinahou Ranch in Hawai‘i Volcanoes National Park, Island of Hawai‘i, where we operated a trapping array continuously for over two years. Specifically, two types of traps were deployed at each location, one a gravid trap and another a CO2 trap. We provide a step-by-step guide on how to build the systems and describe how to deploy them in the field.
","language":"English","publisher":"University of Hawai‘i at Hilo","usgsCitation":"Paxton, E.H., and van Bergeijk, L., 2025, Improving efficiency of disease vector sampling in the field: An automatic solar-powered mosquito trapping system: Hawaii Cooperative Studies Unit Technical Report HCSU-118, iii, 23 p.","productDescription":"iii, 23 p.","ipdsId":"IP-179402","costCenters":[{"id":521,"text":"Pacific Island Ecosystems Research Center","active":false,"usgs":true}],"links":[{"id":496228,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":496190,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://hdl.handle.net/10790/5401","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Paxton, Eben H. 0000-0001-5578-7689","orcid":"https://orcid.org/0000-0001-5578-7689","contributorId":19640,"corporation":false,"usgs":true,"family":"Paxton","given":"Eben","email":"","middleInitial":"H.","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true}],"preferred":true,"id":949485,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"van Bergeijk, Laura 0000-0002-8429-2316","orcid":"https://orcid.org/0000-0002-8429-2316","contributorId":361804,"corporation":false,"usgs":false,"family":"van Bergeijk","given":"Laura","affiliations":[{"id":86358,"text":"Former volunteer USGS PIERC","active":true,"usgs":false}],"preferred":false,"id":949486,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70269647,"text":"70269647 - 2025 - Quantitative mineral resource assessment of lithium pegmatite deposits in the Appalachian Orogen, USA","interactions":[],"lastModifiedDate":"2025-09-23T15:22:34.243119","indexId":"70269647","displayToPublicDate":"2025-09-12T10:05:46","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Quantitative mineral resource assessment of lithium pegmatite deposits in the Appalachian Orogen, USA","docAbstract":"Lithium is classified as a U.S. critical mineral commodity, and its demand is projected to drastically increase through 2040, driven by electric vehicle production and energy storage applications (IEA 2021).Most global lithium production is not in the United States increasing vulnerability to a supply disruption. The U.S. Geological Survey is actively assessing domestic lithium deposits including lithium-bearing pegmatites in the Appalachian orogen. Permissive tracts for lithium pegmatite deposits were delineated by integrating lithological, tectonic, geochemical, geophysical, and mineral occurrence data. The geospatial data and permissive tracts were used to estimate the number of undiscovered lithium pegmatite deposits. Estimates were then integrated into probabilistic simulations along with a new global lithium pegmatite grade and tonnage dataset to quantify potential contained undiscovered lithium resources. An economic filter was used to estimate the amount of potentially recoverable undiscovered resources. Preliminary computations for the northern Appalachians, including application of the economic filter to the median recoverable contained resource, yields 900,000 metric tons of Li2O that correspond to enough Li2O to replace 127 years of import reliance at the current rate (7,100 t Li2O/yr; USGS, 2025). For the southern Appalachians, preliminary computations yielded 1,430,000 metric tons of Li2O, which corresponds to 201 years of import reliance.
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To evaluate domestic graphite resources, the U.S. Geological Survey (USGS) conducted two airborne electromagnetic (AEM) surveys as part of the Earth Mapping Resources Initiative (Earth MRI) over prospective areas in the southern Appalachians of Alabama and the Seward Peninsula of Alaska. These surveys aimed to refine areas of interest by revealing subsurface electrical resistivity patterns indicative of graphite-bearing rocks. The results of the AEM surveys were integrated with existing geological knowledge and supplemented by field observations to assess the likelihood of undiscovered resources in these regions. This multidisciplinary approach combined geophysical techniques with traditional geological methods, enhancing the understanding of graphite potential in areas that may have been previously overlooked. The findings from this initiative are expected to contribute significantly to the ongoing efforts to secure a reliable domestic supply of graphite, thereby reducing import reliance and supporting national interests in mineral resource management.","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Macqueen, P.G., Case, G.N., Bedrosian, P.A., Hammarstrom, J.M., Karl, S., Lederer, G.W., Bollen, E.M., Whitmore, J., VanDervoort, D., Emond, A.M., Fusso, L., Brown, P.J., Walsh, G., Labay, K.A., Stokes, M., and Stewart, A., 2025, Synergy between geology and geophysics in graphite mineral resource assessment, 18th SGA Biennial Meeting, v. 3, Golden, CO, August 3-7, 2025, p. 1235-1238.","productDescription":"4 p.","startPage":"1235","endPage":"1238","ipdsId":"IP-176049","costCenters":[{"id":35995,"text":"Geology, Geophysics, and 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0000-0002-9505-9923","orcid":"https://orcid.org/0000-0002-9505-9923","contributorId":202407,"corporation":false,"usgs":true,"family":"Lederer","given":"Graham","email":"","middleInitial":"W.","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":945628,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Bollen, Elizabeth M.","contributorId":304625,"corporation":false,"usgs":false,"family":"Bollen","given":"Elizabeth","email":"","middleInitial":"M.","affiliations":[{"id":36730,"text":"University of Alabama","active":true,"usgs":false}],"preferred":false,"id":945629,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Whitmore, John 0000-0003-2444-9825","orcid":"https://orcid.org/0000-0003-2444-9825","contributorId":359482,"corporation":false,"usgs":false,"family":"Whitmore","given":"John","affiliations":[{"id":13327,"text":"Geological Survey of Alabama","active":true,"usgs":false}],"preferred":false,"id":945630,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"VanDervoort, Dane 0000-0003-3376-005X","orcid":"https://orcid.org/0000-0003-3376-005X","contributorId":359483,"corporation":false,"usgs":false,"family":"VanDervoort","given":"Dane","affiliations":[{"id":13327,"text":"Geological Survey of Alabama","active":true,"usgs":false}],"preferred":false,"id":945631,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Emond, Abraham M.","contributorId":216313,"corporation":false,"usgs":false,"family":"Emond","given":"Abraham","email":"","middleInitial":"M.","affiliations":[{"id":16126,"text":"Alaska Division of Geological and Geophysical Surveys","active":true,"usgs":false}],"preferred":false,"id":945632,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Fusso, Logan 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0000-0003-4264-8836","orcid":"https://orcid.org/0000-0003-4264-8836","contributorId":355444,"corporation":false,"usgs":true,"family":"Walsh","given":"Gregory J.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":945635,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Labay, Keith A. 0000-0002-6763-3190 klabay@usgs.gov","orcid":"https://orcid.org/0000-0002-6763-3190","contributorId":217714,"corporation":false,"usgs":true,"family":"Labay","given":"Keith","email":"klabay@usgs.gov","middleInitial":"A.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":945636,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Stokes, Martha 0000-0002-2838-8380","orcid":"https://orcid.org/0000-0002-2838-8380","contributorId":269608,"corporation":false,"usgs":true,"family":"Stokes","given":"Martha","email":"","affiliations":[{"id":49175,"text":"Geology, Energy & Minerals Science Center","active":true,"usgs":true}],"preferred":true,"id":945637,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Stewart, Andrew Arnold 0000-0002-3948-3148","orcid":"https://orcid.org/0000-0002-3948-3148","contributorId":359485,"corporation":false,"usgs":true,"family":"Stewart","given":"Andrew Arnold","affiliations":[{"id":432,"text":"National Minerals Information Center","active":true,"usgs":true}],"preferred":true,"id":945638,"contributorType":{"id":1,"text":"Authors"},"rank":16}]}} ,{"id":70270943,"text":"70270943 - 2025 - Mineralization processes at Escanaba Trough","interactions":[],"lastModifiedDate":"2025-09-19T15:04:47.387082","indexId":"70270943","displayToPublicDate":"2025-09-12T09:57:50","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Mineralization processes at Escanaba Trough","docAbstract":"Escanaba Trough off northern California is the southernmost and only sediment covered segment of the Gorda Ridge. Hydrothermal mineralization was first discovered in Escanaba Trough in 1985, and subsequent investigations included the delineation of the NESCA (northern Escanaba) and SESCA (southern Escanaba) sections of Escanaba Trough, as well as drilling by Ocean Drilling Program (ODP) Leg 169 in 1996. Preliminary research conducted in the 1980s distinguished two classes of sulfide mineral assemblages within the Escanaba Trough: one dominated by pyrrhotite (Fe1-xS) and one containing ‘mixed sulfides’ including chalcopyrite (CuFeS2) and sphalerite (ZnS). In 2022, we conducted a research expedition to the Escanaba Trough to more thoroughly characterize mineralization processes and consider preservation of precipitated minerals throughout hydrothermally active and inactive sections of Escanaba Trough, with the specific objective of characterizing the host minerals, and processes of enrichment for specific elements which are currently listed as critical elements and can also be toxic under certain conditions (Sb, As, Ba, Co, Ga, Ge, Te). The following will include initial results from that work.
","conferenceTitle":"18th SGA Biennial Meeting","conferenceDate":"August 3-7, 2025","conferenceLocation":"Golden, CO","language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Gartman, A., Favela, J., Adamczyk, K., Jamieson, J., Zierenberg, R., and Yeo, I., 2025, Mineralization processes at Escanaba Trough, 18th SGA Biennial Meeting, v. 2, Golden, CO, August 3-7, 2025, p. 737-739.","productDescription":"3 p.","startPage":"737","endPage":"739","ipdsId":"IP-174691","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":494933,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.e-sga.org/publications/conference-proceedings","linkFileType":{"id":5,"text":"html"}},{"id":495802,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Escanaba Trough","volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Gartman, Amy 0000-0001-9307-3062 agartman@usgs.gov","orcid":"https://orcid.org/0000-0001-9307-3062","contributorId":215546,"corporation":false,"usgs":true,"family":"Gartman","given":"Amy","email":"agartman@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":947413,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Favela, Jaycee Janet 0000-0001-9175-8324","orcid":"https://orcid.org/0000-0001-9175-8324","contributorId":339910,"corporation":false,"usgs":true,"family":"Favela","given":"Jaycee Janet","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":947414,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adamczyk, Katlin Bowman 0000-0003-3324-0062","orcid":"https://orcid.org/0000-0003-3324-0062","contributorId":301253,"corporation":false,"usgs":true,"family":"Adamczyk","given":"Katlin Bowman","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":947415,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jamieson, John","contributorId":339557,"corporation":false,"usgs":false,"family":"Jamieson","given":"John","affiliations":[{"id":40744,"text":"Memorial University","active":true,"usgs":false}],"preferred":false,"id":947416,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Zierenberg, Rob","contributorId":360683,"corporation":false,"usgs":false,"family":"Zierenberg","given":"Rob","affiliations":[{"id":86084,"text":"3Department of Earth and Planetary Sciences, University of California Davis","active":true,"usgs":false}],"preferred":false,"id":947417,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Yeo, Isobel","contributorId":360684,"corporation":false,"usgs":false,"family":"Yeo","given":"Isobel","affiliations":[{"id":86087,"text":"National Oceanography Center, Southampton","active":true,"usgs":false}],"preferred":false,"id":947418,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70271476,"text":"70271476 - 2025 - Comparing magmatism and hydrothermal alteration using magnetic modelling and stable isotopes at the Clementine porphyry copper prospect, Montana, USA","interactions":[],"lastModifiedDate":"2025-09-17T14:57:28.463629","indexId":"70271476","displayToPublicDate":"2025-09-12T09:49:07","publicationYear":"2025","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Comparing magmatism and hydrothermal alteration using magnetic modelling and stable isotopes at the Clementine porphyry copper prospect, Montana, USA","docAbstract":"Recent mapping of the underexplored Clementine prospect in southwestern Montana has revealed evidence of hydrothermal alteration and mineralized breccia vein gossan interpreted to represent the upper expression of a Cretaceous, sediment-hosted copper porphyry system. The prospect is at the nexus of several Cretaceous granites, including the pre-mineralization Butte Granite and Big Hole Canyon plutons and local pre- to post-mineralization granite intrusions. Here, 3D magnetic inversions and stable isotope data are used to evaluate the spatial and genetic relationship of mineralization and Cretaceous magmatism. Magnetic inversions reveal a zone of high magnetic susceptibility beneath the prospect that is related to an exposure of unaltered, likely post-mineralization granite. The granite appears to connect to the Big Hole Canyon pluton at depth, suggesting it is a late-stage differentiate of the cooling, pre-mineralization pluton that may have been one of several potential heat sources for the mineral system at Clementine. This is supported by carbon isotope values of graphite that indicate organic material in shale of the Cretaceous Kootenai Formation was subject to metamorphism. Preliminary light hydrogen isotope values of actinolite hydrothermal orbs suggest formation following magmatic outgassing during thermal advection from an underlying intrusion.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the 18th Biennial SGA Meeting","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Society for Geology Applied to Mineral Deposits","usgsCitation":"Magnin, B.P., McIntosh, J.A., and Brimhall, G.H., 2025, Comparing magmatism and hydrothermal alteration using magnetic modelling and stable isotopes at the Clementine porphyry copper prospect, Montana, USA, in Proceedings of the 18th Biennial SGA Meeting, v. 2, p. 471-474.","productDescription":"4 p.","startPage":"471","endPage":"474","ipdsId":"IP-175774","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":495631,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":495608,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.e-sga.org/publications/conference-proceedings"}],"country":"United States","state":"Montana","otherGeospatial":"Clementine prospect","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -113,\n 45.9167\n ],\n [\n -113,\n 45.5\n ],\n [\n -112.5,\n 45.5\n ],\n [\n -112.5,\n 45.9167\n ],\n [\n -113,\n 45.9167\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Magnin, Benjamin Patrick 0000-0001-9951-4404","orcid":"https://orcid.org/0000-0001-9951-4404","contributorId":300679,"corporation":false,"usgs":true,"family":"Magnin","given":"Benjamin","email":"","middleInitial":"Patrick","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":948882,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McIntosh, Julia A. 0000-0003-2819-8664","orcid":"https://orcid.org/0000-0003-2819-8664","contributorId":331662,"corporation":false,"usgs":true,"family":"McIntosh","given":"Julia","email":"","middleInitial":"A.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":948883,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brimhall, George H.","contributorId":361483,"corporation":false,"usgs":false,"family":"Brimhall","given":"George","middleInitial":"H.","affiliations":[{"id":86298,"text":"Clementine Exploration LLC","active":true,"usgs":false}],"preferred":false,"id":948884,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70272024,"text":"70272024 - 2025 - Complex sound scattering layer and water-column dynamics over a mesophotic coral ecosystem: Southwest Puerto Rico, U.S.A.","interactions":[],"lastModifiedDate":"2025-12-01T16:47:18.117009","indexId":"70272024","displayToPublicDate":"2025-09-12T09:41:03","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1338,"text":"Coral Reefs","active":true,"publicationSubtype":{"id":10}},"title":"Complex sound scattering layer and water-column dynamics over a mesophotic coral ecosystem: Southwest Puerto Rico, U.S.A.","docAbstract":"A nearly 5-month record of high-resolution temperature and acoustic backscatter profiles from the upper insular slope off southwest Puerto Rico reveals complex sound scattering layer (SSL) dynamics over a mesophotic coral ecosystem (MCE). The SSLs exhibited both diel and reverse diel vertical migration, thin layer (< 5 m) and multiple layer formations, depth modulation due to internal waves, and vertical layering in the absence of water column stratification. The long-term observations also capture SSL and water column dynamics across changing seasons and two category five hurricanes, Irma and María. The SSLs, likely comprosed of zooplankton, represent an important food source for both the sessile (e.g., corals and sponges) and mobile (e.g., fish) MCE taxa, and their effective vertical mobility underscores their importance to trophic connectivity between the upper and lower slope MCEs, as well as the shelf. Our results also underscore the challenges in adequately resolving zooplankton aggregations using conventional sampling techniques.
","language":"English","publisher":"Springer Nature","doi":"10.1007/s00338-025-02747-1","usgsCitation":"Cheriton, O.M., Storlazzi, C.D., Sherman, C.E., Rosenberger, K.J., and Schizas, N.V., 2025, Complex sound scattering layer and water-column dynamics over a mesophotic coral ecosystem: Southwest Puerto Rico, U.S.A.: Coral Reefs, v. 44, p. 2147-2154, https://doi.org/10.1007/s00338-025-02747-1.","productDescription":"8 p.","startPage":"2147","endPage":"2154","ipdsId":"IP-172712","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":496424,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1007/s00338-025-02747-1","text":"Publisher Index Page"},{"id":496409,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Puerto Rico","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -67.26443611756584,\n 18.08156998737445\n ],\n [\n -67.26443611756584,\n 17.906141767871972\n ],\n [\n -66.87248059498367,\n 17.906141767871972\n ],\n [\n -66.87248059498367,\n 18.08156998737445\n ],\n [\n -67.26443611756584,\n 18.08156998737445\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"44","noUsgsAuthors":false,"publicationDate":"2025-09-12","publicationStatus":"PW","contributors":{"authors":[{"text":"Cheriton, Olivia M. 0000-0003-3011-9136","orcid":"https://orcid.org/0000-0003-3011-9136","contributorId":204459,"corporation":false,"usgs":true,"family":"Cheriton","given":"Olivia","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":949755,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Storlazzi, Curt D. 0000-0001-8057-4490","orcid":"https://orcid.org/0000-0001-8057-4490","contributorId":213610,"corporation":false,"usgs":true,"family":"Storlazzi","given":"Curt","middleInitial":"D.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":949756,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sherman, Clark E. 0000-0003-0758-7900","orcid":"https://orcid.org/0000-0003-0758-7900","contributorId":259180,"corporation":false,"usgs":false,"family":"Sherman","given":"Clark","middleInitial":"E.","affiliations":[{"id":34129,"text":"University of Puerto Rico Mayaguez","active":true,"usgs":false}],"preferred":false,"id":949757,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rosenberger, Kurt J. 0000-0002-5185-5776 krosenberger@usgs.gov","orcid":"https://orcid.org/0000-0002-5185-5776","contributorId":140453,"corporation":false,"usgs":true,"family":"Rosenberger","given":"Kurt","email":"krosenberger@usgs.gov","middleInitial":"J.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":949758,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Schizas, Nikolaos V.","contributorId":362022,"corporation":false,"usgs":false,"family":"Schizas","given":"Nikolaos","middleInitial":"V.","affiliations":[],"preferred":false,"id":949829,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70271470,"text":"70271470 - 2025 - RUSH: Rapid remote sensing Updates of land cover for Storm and Hurricane forecast models","interactions":[],"lastModifiedDate":"2025-09-17T14:16:15.20186","indexId":"70271470","displayToPublicDate":"2025-09-12T09:10:15","publicationYear":"2025","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3250,"text":"Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"RUSH: Rapid remote sensing Updates of land cover for Storm and Hurricane forecast models","docAbstract":"Coastal vegetated ecosystems, including tidal marshes, vegetated dunes, and shrub- and forest-dominated wetlands, can mitigate hurricane impacts such as coastal flooding and erosion by increasing surface roughness and reducing wave energy. Land cover maps can be used as input to improve simulations of surface roughness in advanced hydro-morphological models. Consequently, there is a need for efficient tools to develop up-to-date land cover maps that include the accurate distribution of vegetation types prior to an extreme storm. In response, we developed the RUSH tool (Rapid remote sensing Updates of land cover for Storm and Hurricane forecast models). RUSH delivers high-resolution maps of coastal vegetation for near-real-time or historical conditions via a Jupyter Notebook application and a graphical user interface (GUI). The application generates 3 m spatial resolution land cover maps with classes relevant to coastal settings, especially along mainland beaches, headlands, and barrier islands, as follows: (1) open water; (2) emergent wetlands; (3) dune grass; (4) woody wetlands; and (5) bare ground. These maps are developed by applying one of two seasonal random-forest machine learning models to Planet Labs SuperDove multispectral imagery. Cool Season and Warm Season Models were trained on 665 and 594 reference points, respectively, located across study regions in the North Carolina Outer Banks, the Mississippi Delta in Louisiana, and a portion of the Florida Gulf Coast near Apalachicola. Cool Season and Warm Season Models were tested with 666 and 595 independent points, with an overall accuracy of 93% and 94%, respectively. The Jupyter Notebook application provides users with a flexible platform for customization for advanced users, whereas the GUI, designed with user-experience feedback, provides non-experts access to remote sensing capabilities. This application can also be used for long-term coastal geomorphic and ecosystem change assessments.
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