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Not all publications have extents, not all extents are completely accurate
Evaluating mark–resight survey design performance using simulation: A case study of endangered Steller sea lions
Amanda J. Warlick, Brian S. Fadely, Peter Mahoney, Sharon R. Melin, Tom Gelatt, Kim Raum-Suryan, Sarah J. Converse
2025, Ecosphere (16)
Effective monitoring is fundamental to estimating wildlife population parameters with a level of accuracy and precision that is adequate to inform management decisions. However, managers must balance trade-offs between the costs of monitoring and the resulting data quality to identify cost-effective monitoring survey designs. As such, evaluating the expected performance...
Evaluating slash piles as habitat for a threatened salamander
Rachel A. Loehman, Nancy E Karraker
2025, Fire Ecology (21)
BackgroundAmplified wildfire activity in forests of the western United States threatens biodiversity. Fuel treatments can reduce fire severity, modify fire behavior, and restore forest structure and composition, yet impacts of some treatments, including slash piling and burning, on wildlife have received little attention. Piling of residual woody material...
U.S. Geological Survey science strategy to address highly pathogenic avian influenza and its effects on wildlife health 2025–29
Andrew M. Ramey, Diann J. Prosser, Laura E. Hubbard, Guelaguetza Vazquez-Meves, Amy George, M. Camille Hopkins
2025, Circular 1558
Executive SummaryHighly pathogenic avian influenza (HPAI) is an ecologically and economically important animal disease that can also directly affect humans (a “zoonotic” disease). HPAI was once limited almost exclusively to domestic poultry but has rapidly adapted to diverse animal hosts. Viruses causing HPAI now appear to be maintained and dispersed...
A generalized deep learning model to detect and classify volcano seismicity
David Fee, Darren Tan, John J. Lyons, Mariangela Sciotto, Andrea Cannata, Alicia J. Hotovec-Ellis, Tarsilo Girona, Aaron Wech, Diana Roman, Matthew M. Haney, Silvio De Angelis
2025, Volcanica (8) 305-323
Volcano seismicity is often detected and classified based on its spectral properties. However, the wide variety of volcano seismic signals and increasing amounts of data make accurate, consistent, and efficient detection and classification challenging. Machine learning (ML) has proven very effective at detecting and classifying tectonic seismicity, particularly using Convolutional...
Assessing the combined influence of biotic and anthropogenic stressors on polar bears to inform conservation planning
Todd C. Atwood, Bruce G. Marcot, David C. Douglas, Jeffrey F. Bromaghin, Anthony M. Pagano
2025, Ecosphere (16)
Developing conservation strategies for species vulnerable to the effects of climate change, like polar bears (Ursus maritimus), can be challenging given the uncertainty of future environmental conditions. Effective conservation planning requires identifying and ranking threats to the persistence of polar bears throughout their circumpolar range and then assessing the ability...
Global tracking of marine megafauna space use reveals how to achieve conservation targets
Ana M. M. Sequeira, Jorge P. Rodriguez, Sarah A. Marley, Hannah J. Calich, Mirjam van der Mheen, Michelle VanCompernolle, Lucy M. Arrowsmith, Lauren R. Peel, Nuno Queiroz, Marisa Vedor, Ivo da Costa, Gonzalo Mucientes, Ana Couto, Nicolas E. Humphries, Sara Abalo-Morla, Francisco J. Abascal, Debra L. Abercrombie, Katya Abrantes, F. Alberto Abreu-Grobois, André S. Afonso, Pedro Afonso, Heidi Ahonen, Susanne Åkesson, Joanna Alfaro-Shigueto, Russel D. Andrews, Frederic Angelier, Marina Antonopoulou, Javier A. Arata, Gonzalo Araujo, Randall Arauz, Jose Manuel Arcos, Igor Arregui, Haritz Arrizabalaga, Marie Auger-Methe, Steffen Bach, Fred Bailleul, Robin W. Baird, George H. Balazs, Susan G. Barco, Adam Barnett, Warren Baverstock, Alastair M. M. Baylis, Annalea Beard, Juan Bécares, Eduardo J. Belda, Ian Bell, Ashley Bennison, Scott R. Benson, Diego Bernal, Michael L. Berumen, Sandra Bessudo, Natalia P.A. Bezerra, Antonin V. Blaison, Gabriela S. Blanco, Barbara A. Block, Mark Bolton, Mark E. Bond, Ramón Bonfil, Camrin D. Braun, Annette C. Broderick, Michael de L. Brooke, Annabelle M.L. Brooks, Edward J. Brooks, Ignacio M. Bruno, Jennifer M. Burns, Michael E. Byrne, Steven E. Campana, Hamish A. Campbell, Richard A. Campbell, Aaron Carlisle, Ruth H. Carmichael, Gemma Carroll, Paolo Casale, Filipe R. Ceia, Demian D. Chapman, Taylor K. Chapple, Jean-Benoit Charrassin, Andre Chiaradia, John Chisholm, Christopher R. Clarke, Thomas A. Clay, Christophe Cleguer, Elizabeth Clingham, Eric E. G. Clua, Jesse E.M. Cochran, Rochelle Constantine, Robert W. Cooper, Estelle Crochelet, Michelle Cronin, Eduardo Cuevas, Kayla P. DaCosta, Laurent Dagorn, Ryan Daly, Randall W. Davis, Nico P. J. de Bruyn, Carlos Delgado-Trejo, Thomas Dellinger, Solène Derville, Stella Diamant, Andrew DiMatteo, Kara L. Dodge, Philip D. Doherty, Michael C. Double, Alistair D. M. Dove, Thomas K Doyle, Michael J. Drew, Lindsay L. Dubbs, Clinton A.J. Duffy, Peter H. Dutton, Ewan W.J. Edwards, Luke D. Einoder, Mark V. Erdmann, Eduardo Espinoza, Nicole Esteban, Ana Isabel Fagundes, Chris Feare, Steven H. Ferguson, Luciana C. Ferreira, Francesco Ferretti, John Filmalter, Brittany Finucci, G. Chris Fischer, Richard J. Fitzpatrick, Jorge Fontes, Angela Formia, Sabrina Fossette, Malcolm P. Francis, Ari S. Friedlaender, Miguel Furtado, Austin J. Gallagher, Claire Garrigue, Enrico Gennari, H. Grant Gilchrist, Brendan J. Godley, Simon D. Goldsworthy, Matthew Gollock, Victoria González Carman, W. James Grecian, Jonathan R. Green, Christophe Guinet, Johan Gustafson, Tristan L. Guttridge, Hector M. Guzman, Derek Hamer, Keith C. Hamer, Neil Hammerschlag, Mike O. Hammill, Luke Harman, Emma Harrison, Catherine E. Hart, A. Errol Harris, Gordon Hastie, Fabio H.V. Hazin, Matt Heard, Alex R. Hearn, Mads Peter Heide-Jorgensen, Leeann Henry, Robert William Henry III, Vicente Guzman Hernandez, Arturo E. Herrera, Mark A. Hindell, John C. Holdsworth, Bonnie J. Holmes, Lucy A. Howey, Edgar Mauricio Hoyos Padilla, Luis A. Huckstadt, Robert E. Hueter, Paulo H. Lara, Nigel E. Hussey, Charlie Huveneers, Kevin Hyland, Dylan T. Irion, David M.P. Jacoby, Audrey Jaeger, Mohammed Y. Jaidah, Mark Jessopp, Oliver J.D. Jewell, Ryan Johnson, Carl G. Jones, Ian D. Jonsen, Lance K.B. Jordan, Salvador J. Jorgensen, Akiko Kato, James T. Ketchum, Alexander S. Kitaysky, A. Peter Klimley, Alison A. Kock, Pieter Koen, Felipe Ladino Archila, Fernanda O. Lana, Jude V. Lane, Matthieu Le Corre, Mary-Anne Lea, Eliza H.K. Leat, Olivia A. Lee, J. Jacob Levenson, César P. Ley-Quiñonez, Fiona Llewellyn, Gwen Lockhart, Gustave G. Lopez, Milagros Lopez Mendilaharsu, Andrew D. Lowther, Paolo Luschi, Molly E. Lutcavage, Warrick S. Lyon, Bruno C.L. Macena, Alice I. Mackay, Christine A. Madden Hof, Mark L. Mallory, Jeffrey C. Mangel, Michael Manning, Kate L. Mansfield, David March, Adolfo Marco, Marianne Marcoux, David Acuña-Marrero, Helene Marsh, Heather Marshall, Bruce R Mate, Jaime D. McAllister, Rebecca L. McGuire, Jane McKenzie, Lachlan McLeay, Clive R. McMahon, Michelle Modest, John T Morris, Mônica M.C. Muelbert, Naveen Namboothri, Wallace J. Nichols, Malcolm A. C. Nicoll, Bradley M. Norman, Ken Norris, Erik Olsen, Steffen Oppel, Sabine Orlowski, Anthony M. Pagano, Brad Page, Vitor H. Paiva, Daniel M. Palacios, Yannis P. Papastamatiou, Denise M. Parker, Charitha B Pattiaratchi, Hoyt Peckham, Cesar R. Peñaherrera-Palma, Julian G. Pepperell, Richard A. Phillips, Simon J. Pierce, Stephen K. Pikesley, Nicolas J. Pilcher, Patrick Pinet, Matt Pinkerton, Enrico Pirotta, Virginie Plot, Abby Powell, Kevin D. Powers, Clare E.M. Prebble, Tiana J. Preston, Rui Prieto, Laura Prosdocimi, John L. Quinn, Lina Maria Quintero, Thierry Raclot, Iván Ramirez, Dení Ramírez-Macías, Jaime A. Ramos, Andrew J. Read, Rolf Ream, Alan F. Rees, Richard D. Reina, Ryan R. Reisinger, Ohiana Revuelta, Samantha D. Reynolds, Anthony J. Richardson, Leena Riekkola, Federico G. Riet-Sapriza, David P. Robinson, Patrick W. Robinson, Carlos F.D. Rocha, Tracey L. Rogers, Christoph A. Rohner, Yan Ropert-Coudert, Monica Ross, David R. L. Rowat, Kevin Ruhomaun, Paul M. Sagar, Melita A. Samoilys, Sonia Sanchez, Alejandra G. Sandoval-Lugo, Erik A.P. dos Santos, António M. Santos, Kylie L. Scales, Gail Schofield, Jayson M. Semmens, Edy Setyawan, Scott A. Shaffer, Kartik Shanker, Marcus Sheaves, George L. Shillinger, Mahmood S. Shivji, Abraham Sianipar, Janet R.D. Silk, Mónica A. Silva, Jolene Sim, Samantha J. Simpson, Gregory B. Skomal, David J. Slip, Malcolm J. Smale, German A. Soler, Marc Soria, Lara L. Sousa, Emily J. Southall, Jean-Claude Stahl, Kilian M. Stehfest, Jeremy T. Sterling, John D. Stevens, Guy M.W. Stevens, Joshua D. Stewart, Adhith Swaminathan, Akinori Takahashi, Vikash Tatayah, Jean-Baptiste Thiebot, Paul M. Thompson, Simon R. Thorrold, Michele Thums, Jesus Tomas, Leigh G. Torres, Alison Towner, Philip N. Trathan, John P. Tyminski, Ricardo Sagarminaga van Buiten, Robert P. van Dam, Frederic Vandeperre, Nuria Varo-Cruz, Jeremy J. Vaudo, Michel Vely, Stella Villegas-Amtmann, Cecile Vincent, David Waayers, Sarah Wanless, Yuuki Y. Watanabe, Cortney A. Watt, Sam B. Weber, Nicola Weber, Michael J. Weise, Linda Welch, Randall S. Wells, Jonathan M. Werry, Bradley M. Wetherbee, Timothy D. White, Scott D. Whiting, Andrea U. Whiting, Annelise Wiebkin, Barbara Wienecke, Natalie E. Wildermann, David N. Wiley, Alexis Will, Sean Williams, Marie Windstein, Saskia Wischnewski, Matthew J. Witt, Freya C. Womersley, Andrew G. Wood, Lucy J. Wright, José C. Xavier, Takashi Yamamoto, David J. Yurkowski, Patricia M. Zarate, Alan Zavala-Norzagaray, Alexandre N. Zerbini, Daniel P. Costa, Robert Harcourt, Mark G. Meekan, Graeme C. Hays, David W. Sims, Carlos M. Duarte, Víctor M. Eguíluz
2025, Science (388) 1086-1097
The recent Kunming-Montreal Global Biodiversity Framework (GBF) sets ambitious goals but no clear pathway for how zero loss of important biodiversity areas and halting human-induced extinction of threatened species will be achieved. We assembled a multi-taxa tracking dataset (11 million geopositions from 15,845 tracked individuals across 121 species) to provide...
Observing northern high-latitude river systems to understand changes in a warming Arctic
Joshua C. Koch, J. A. O’Donnell
2025, Current Climate Change Reports (11)
Purpose of ReviewStreams and rivers are undergoing rapid change as the Arctic warms and thaws. We review recent observations in Arctic stream systems to identify ubiquitous changes and the most useful tools for observing change and exploring the underlying processes.Recent FindingsRecent literature indicates increasingly significant trends...
Critical minerals in orogenic (gold) and Coeur d’Alene-type mineral systems of the United States
Ryan D. Taylor, Albert H. Hofstra
2025, Data Report 1198
Orogenic and Coeur d’Alene-type mineral systems are produced by metamorphic devolatilization of thick volcanic or siliciclastic sedimentary rock sequences and the focused flow of hydrothermal fluids upwards along crustal-scale faults. Most orogenic systems are found along the Cordilleran orogen, stretching from California northwards into Alaska, whereas most Coeur d’Alene-type systems...
Modeling individual-level and population-level nest success of California Condors from movement data
Andrea Blackburn, Joseph Michael Eisaguirre, Joseph C. Brandt, Arianna Punzalan, Laura Mcmahon, Molly Astell, Nadya E. Seal Faith, David J. Meyer, Estelle A. Sandhaus
2025, Journal of Raptor Research (59)
The California Condor (Gymnogyps californianus) is a critically endangered species with populations that are not currently self-sustaining. Although understanding nest success is key to understanding trends in their populations, field monitoring of condor nests has become increasingly challenging as the number of nesting condors has increased and their range has...
Linking fire radiative power to land cover, fire history, and environmental setting in Alaska, 2003–2022
Jessica J. Walker, Rachel A. Loehman, Britt Windsor Smith, Christopher E. Soulard
2025, International Journal of Wildland Fire (34)
BackgroundFire radiative power (FRP) shows promise as a diagnostic and predictive indicator of fire behavior and post-fire effects in Alaska, USA.AimsTo investigate relationships between FRP, vegetation functional groups, and environmental settings in Alaska (2003–2022) under various fire history conditions.MethodsWe tested for distinctness of MODIS...
Mapping eelgrass (Zostera marina) cover and biomass at Izembek Lagoon, Alaska, using in-situ field data and Sentinel-2 satellite imagery
David C. Douglas, Michael D. Fleming, Vijay P. Patil, David H. Ward
2025, Open-File Report 2025-1007
The U.S. Geological Survey and the U.S. Fish and Wildlife Service have developed a three-tiered strategy for monitoring eelgrass (Zostera marina) beds at Izembek Lagoon, Alaska, that targets different spatial and temporal scales. The broadest-scale monitoring (tier-1) uses satellite imagery about every 5 years to delineate the spatial extent of...
Rapid recovery of an arctic lake ecosystem from a pulse disturbance caused by thermokarst failure
Phaedra E. Budy, Casey A. Pennock, Sarah Messenger, Hunter Pehrson, Emily Adler, Gary P. Thiede, Natasha R. Christman, Byron C. Crump, Anne E. Giblin, George W. Kling
2025, Oecologia (207)
Due to rapid climate change, arctic ecosystems are experiencing an increase in disturbances including localized land-surface failures caused by melting ground ice (thermokarst failures). These failures result in the mass transport of sediment and organic materials into surface waters, with the potential to dramatically alter aquatic ecosystem function and biotic...
Genetic connectivity in a cooperatively breeding carnivore between two protected areas
Ariana L. Cerreta, Jennifer R. Adams, Bridget L. Borg, Mathew S. Sorum, Lisette P. Waits, David Edward Ausband
2025, Ecology and Evolution (15)
Wildlife populations are increasingly threatened by human activities. Most studies, however, are often short in duration or do not encompass the large spatial extent necessary to measure the potential effects of human activities on population vital rates. Furthermore, the life history features of species with high fecundity and excellent dispersal...
Linking permafrost to the abundance, biomass, and energy density of fish in Arctic headwater streams
Michael P. Carey, Joshua C. Koch, Jonathan A. O’Donnell, Brett Poulin, Christian E. Zimmerman
2025, Ecosphere (16)
Permafrost thaw alters groundwater flow, river hydrology, stream-catchment interactions, and the availability of carbon and nutrients in headwater streams. The impact of permafrost on watershed hydrology and biogeochemistry of headwater streams has been demonstrated, but there is little understanding of how permafrost influences fish in these ecosystems. We examined relations...
Bayesian mapping of regionally grouped, sparse, univariate earth science data
Karl J. Ellefsen, Bronwen Wang, Margaret A. Goldman
2025, Techniques and Methods 7-C29
Some earth science data are naturally grouped by region, and it is often desirable to map these data by region. However, if there are only a few samples within each region, then the map should be smoothed in an appropriate way to mitigate the problems that arise from having only...
Marginalizing time in habitat selection and species distribution models improves inference
Joseph Michael Eisaguirre, Layne G. Adams, Bridget Borg, Heather E. Johnson
2025, Diversity and Distributions (31)
AimRecent methodological advances for studying how animals move and use space with telemetry data have focused on fine-scale, more mechanistic inference. However, in many cases, researchers and managers remain interested in larger scale questions regarding species distribution and habitat use across study areas, landscapes, or seasonal ranges. Point processes offer...
Organic matter composition versus microbial source: Controls on carbon loss from fen wetland and permafrost soils
Sommer F. Starr, Kimberly Wickland, Anne M. Kellerman, Amy M. McKenna, Martin M. Kurek, Aubrey Miller, Ariana Karsaras, Thomas A. Douglas, Rachel Mackelprang, Ashley L. Shade, Robert G.M. Spencer
2025, JGR Biogeosciences (130)
Wetland and permafrost soils contain some of Earth's largest reservoirs of organic carbon, and these stores are threatened by rapid warming across the Arctic. Nearly half of northern wetlands are affected by permafrost. As these ecosystems warm, the cycling of dissolved organic matter (DOM) and the opportunities for microbial degradation...
Using long-term ecological datasets to unravel the impacts of short-term meteorological disturbances on phytoplankton communities
V. Tran-Khac, J.P. Doubek, Vijay P. Patil, J.D. Stockwell, R. Adrian, C.-W. Change, G. Dur, A. Lewandowska, J.A. Rusak, N. Salmaso, D. Straile, S.J. Thackeray, P. Venail, R. Bhattacharya, J. Brentrup, R. Bruel, H. Feuchtmayr, M.O. Gessner, H-P. Grossart, B.W. Ibelings, S. Jacquet, S. MacIntyre, S.S. Matsuzaki, E. Nodine, P. Nõges, L.G. Rudstam, F. Soulignac, P. Verburg, P. Znachor, T. Zohary, O. Anneville
2025, Freshwater Biology (70)
Extreme meteorological events such as storms are increasing in frequency and intensity, but our knowledge of their impacts on aquatic ecosystems and emergent system properties is limited. Understanding the ecological impacts of storms on the dynamics of primary producers remains a challenge that needs to be addressed to assess...
USGS critical minerals review
Graham W. Lederer, James V. Jones III, Darcy McPhee, Patricia J Loferski, Robert R. Seal, Paul A. Bedrosian, Patricia Grace Macqueen, V. J. S. Grauch, Federico Solano, Joshua Mark Rosera, David George Pineault
2025, Mining Engineering 38-53
No abstract available....
Alaskan hydrology in transition: Changing precipitation and evapotranspiration patterns are projected to reshape seasonal streamflow and water temperature by midcentury (2035-2064)
D Blaskey, Yifan Cheng, A. C. Newman, Joshua C. Koch, M Goseff, K Musselman
2025, Journal of Hydrometeorology (26) 613-626
High spatial and temporal resolution models are essential for understanding future climate impacts and developing effective climate resilience plans. However, existing regional and global river models often lack the resolution needed to accurately capture local conditions. This study uses a series of high-resolution models, including the Regional Arctic System Model,...
Factors influencing daily nest survival rates of Aleutian terns in the Kodiak Archipelago, Alaska
Jill E. Tengeres, Katie M. Dugger, Robin M. Corcoran, Donald E. Lyons
2025, Journal of Wildlife Management (89)
The Aleutian tern (Onychoprion aleuticus) is a species of high conservation concern in Alaska, USA, owing to large declines at known breeding locations since the 1960s. The small population size and ephemeral behavior of this species have limited the collection of basic biological information and hindered the identification of potential...
Integrating marine historical ecology into management of Alaska’s Pacific cod fishery for climate readiness
Catherine F. West, Loren McClenachan, Steven J. Barbeaux, Ingrid B. Spies, Jason A. Addison, Bruce T. Anderson, Courtney A. Hofman, Katherine L. Reedy, Emma A. Elliott Smith, Michael A. Etnier, Thomas E. Helser, Bruce P. Finney
2025, ICES Journal of Marine Science (82)
The Pacific cod (Gadus macrocephalus) fishery was closed in 2020 after a rapid decline in biomass caused by the marine heat waves of 2014–2019. Pacific cod are exceptionally thermally sensitive and management of this fishery is now challenged by increasingly unpredictable climate conditions. Fisheries monitoring is critical for climate readiness,...
International gas hydrate research and development
Timothy Collett
2025, Conference Paper
Gas hydrates are increasingly acknowledged as a potential future natural gas resource, sparking extensive global research into their geological characteristics and the technology needed for production. This paper offers a comprehensive review of gas hydrate-related research initiatives and production testing activities, including those in the Alaska North Slope (USA), Mackenzie...
Increased flood exposure in the Pacific Northwest following earthquake-driven subsidence and sea-level rise
Tina Dura, William Chilton, David Small, Andra Garner, Andrea D. Hawkes, Diego Melgar, Simon E. Engelhart, Lydia M. Staisch, Robert C. Witter, Alan Nelson, Harvey Kelsey, Jonathan Allan, David S. Bruce, Jessica DePaolis, Mike Priddy, Richard W. Briggs, Robert Weiss, SeanPaul La Selle, Michael J. Willis, Benjamin P. Horton
2025, PNAS (122)
Climate-driven sea-level rise is increasing the frequency of coastal flooding worldwide, exacerbated locally by factors like land subsidence from groundwater and resource extraction. However, a process rarely considered in future sea-level rise scenarios is sudden (over minutes) land subsidence associated with great (>M8) earthquakes, which can exceed 1 m. Along...