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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Genetic diversity and connectivity of moose (Alces americanus americanus) in eastern North America Genetic diversity and connectivity of moose (Alces americanus americanus) in eastern North America
Genetic diversity is critical to a population’s ability to overcome gradual environment change. Large-bodied wildlife existing in regions with relatively high human population density are vulnerable to isolation-induced genetic drift, population bottlenecks, and loss of genetic diversity. Moose (Alces americanus americanus) in eastern North America have a complex history of drastic...
Authors
Elias Rosenblatt, Katherina Gieder, Therese M. Donovan, James Murdoch, Timothy P.L. Smith, Stephanie McKay, Michael P. Heaton, Theodore S. Kalbfleisch, Brenda M. Murdoch, Suraj Bhattarai, Emory Pacht, Emma Verbist, Veronica Basnayake, Stephanie McKay
Changes in habitat suitability for wintering dabbling ducks during dry conditions in the Central Valley of California Changes in habitat suitability for wintering dabbling ducks during dry conditions in the Central Valley of California
In arid and Mediterranean regions, landscape-scale wetland conservation requires understanding how wildlife responds to dynamic freshwater availability and conservation actions to enhance wetland habitat. Taking advantage of Landsat satellite data and structured and community science bird survey data, we built species distribution models to describe how three duck species, the Northern...
Authors
Erin E. Conlisk, Kristin B. Byrd, Elliott Matchett, Austen Lorenz, Michael L. Casazza, Gregory H. Golet, Mark D. Reynolds, Kristin A. Sesser, Matthew E. Reiter
Nest-site selection model for endangered Everglade snail kites to inform ecosystem restoration Nest-site selection model for endangered Everglade snail kites to inform ecosystem restoration
dictors of nesting for snail kites in south Florida. The results of our modeling indicate that hydrology, percent canopy cover, and proximity to recently burned areas were the most important factors associated with nest-site selection for snail kites. Water depths between 75 and 100 cm, water recession rates between 0 and 1.25 cm/day, percent canopy covers
Authors
Allison Benscoter, Laura D’Acunto, Saira M. Haider, Robert J. Fletcher, Stephanie Romanach
Elevation-based probabilistic mapping of irregularly flooded wetlands along the northern Gulf of Mexico coast Elevation-based probabilistic mapping of irregularly flooded wetlands along the northern Gulf of Mexico coast
Irregularly flooded wetlands are found above the mean high water tidal datum and are exposed to tides and saltwater less frequently than daily. These wetlands provide important ecosystem services, such as providing habitat for fish and wildlife, enhancing water quality, ameliorating flooding impacts, supporting coastal food webs, and protecting upslope areas from erosion. Mapping...
Authors
Nicholas Enwright, Wyatt C. Cheney, Kristine O. Evans, Hana R. Thurman, Mark S. Woodrey, Auriel Fournier, Dean B. Gesch, Jonathan L. Pitchford, Jason M. Stoker, Stephen C. Medeiros
Juvenile life history diversity is associated with lifetime individual heterogeneity in a migratory fish Juvenile life history diversity is associated with lifetime individual heterogeneity in a migratory fish
Differences in the life history pathways (LHPs) of juvenile animals are often associated with differences in demographic rates in later life stages. For migratory animals, different LHPs often result in animals from the same population occupying distinct habitats subjected to different environmental drivers. Understanding how demographic rates differ among animals expressing different...
Authors
Mark H. Sorel, Andrew R. Murdoch, Richard W. Zabel, Jeffrey C. Jorgensen, Cory M. Kamphaus, Sarah J. Converse
Genetic basis of thiaminase I activity in a vertebrate, zebrafish Danio rerio Genetic basis of thiaminase I activity in a vertebrate, zebrafish Danio rerio
Thiamine (vitamin B1) metabolism is an important driver of human and animal health and ecological functioning. Some organisms, including species of ferns, mollusks, and fish, contain thiamine-degrading enzymes known as thiaminases, and consumption of these organisms can lead to thiamine deficiency in the consumer. Consumption of fish containing thiaminase has led to elevated mortality...
Authors
Cathy A. Richter, Allison N. Evans, Scott A. Heppell, James L. Zajicek, Donald E. Tillitt
The influence of short-term temporal variability on the efficacy of dragonfly larvae as mercury biosentinels The influence of short-term temporal variability on the efficacy of dragonfly larvae as mercury biosentinels
Mercury (Hg) exposure to fish, wildlife, and humans is widespread and of global concern, thus stimulating efforts to reduce emissions. Because the relationships between rates of inorganic Hg loading, methylmercury (MeHg) production, and bioaccumulation are extremely complex and challenging to predict, there is a need for reliable biosentinels to understand the distribution of Hg in the...
Authors
James Willacker, Collin A. Eagles-Smith, Sarah J. Nelson, Colleen M. Flanagan-Pritz, David P. Krabbenhoft
Editorial: Advanced physico-chemical technologies for water detoxification and disinfection Editorial: Advanced physico-chemical technologies for water detoxification and disinfection
One of the most critical challenges we face today is access to clean water. Climate change, industrialization, high rates of urbanization, and population growth have resulted in many countries suffering from water crises, especially in the arid and semi-arid areas. Countries in different regions of the world have also been struggling over regional water availability and it is anticipated...
Authors
Yaneth A. Bustos-Terrones, Laura M. Norman, Leonidas Perez-Estrada, Ahmed El Nemr, Erick R. Bandala
Broadening benefits and anticipating tradeoffs with a proposed ecosystem service analysis framework for the US Army Corps of Engineers Broadening benefits and anticipating tradeoffs with a proposed ecosystem service analysis framework for the US Army Corps of Engineers
Would-be adopters of ecosystem service analysis frameworks might ask, ‘Do such frameworks improve ecosystem service provision or social benefits sufficiently to compensate for any extra effort?’ Here we explore that question by retrospectively applying an ecosystem goods and services (EGS) analysis framework to a large river restoration case study conducted by the US Army Corps of...
Authors
Lisa A. Wainger, Elizabeth O. Murray, Charles H. Theiling, Anna McMurray, Janet Alice Cushing, Shawn Komlos, Alfred Cofrancesco
Sea level rise may pose conservation challenges for the endangered Cape Sable seaside sparrow Sea level rise may pose conservation challenges for the endangered Cape Sable seaside sparrow
Biodiversity conservation under a changing climate is a challenging endeavor. Landscapes are shifting as a result of climate change and sea level rise but plant communities in particular may not keep up with the pace of change. Predictive ecological models can help decision makers understand how species are likely to respond to change and then adjust management actions to align with...
Authors
Stephanie Romanach, Saira M. Haider, Allison Benscoter
Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates
The “dimensional stability” approach measures different components of ecological stability to investigate how they are related. Yet, most empirical work has used small-scale and short-term experimental manipulations. Here, we apply this framework to a long-term observational dataset of stream macroinvertebrates sampled between the winter flooding and summer monsoon seasons. We test...
Authors
Daniel C Allen, Brian A Gill, Anya Metcalfe, Sophia M Bonjour, Scott Starr, Junna Wang, Diana Valentin, Nancy B. Grimm
Approaching the upper boundary of driver-response relationships: Identifying factors using a novel framework integrating quantile regression with interpretable machine learning Approaching the upper boundary of driver-response relationships: Identifying factors using a novel framework integrating quantile regression with interpretable machine learning
The identification of factors that may be forcing ecological observations to approach the upper boundary provides insight into potential mechanisms affecting driver-response relationships, and can help inform ecosystem management, but has rarely been explored. In this study, we propose a novel framework integrating quantile regression with interpretable machine learning. In the first...
Authors
Zhongyao Liang, Yaoyang Xu, Gang Zhao, Wentao Lu, Zhenghui Fu, Shuhang Wang, Tyler Wagner