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Browse publications authored by our scientists.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more. **Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.

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Blooming wildflowers in Pinnacles National Park.

The circular highlights how our research efforts fulfill larger USGS strategic goals.

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Tricolored Heron at Ding Darling National Park

This book is dedicated to those who are or have been associated with the unit program. 

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Yellow-billed Loon on a lake in the northern area of Alaska.

This report provides abstracts of most of the ongoing and recently completed research.

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Filter Total Items: 4348

The socioecology of fear: A critical geographical consideration of human-wolf-livestock conflict

Animal fear can be an important driver of ecological community structure: predators affect prey not only through predation, but by inducing changes in behavior and distribution—a phenomenon evocatively called the “ecology of fear.” The return of wolves to the western United States is a notable instance of such dynamics, yet plays out in a complex socio-ecological system where efforts to mitigate i
Authors
Robert M. Anderson, Susan Charnley, Kathleen Epstein, Kaitlyn M. Gaynor, Jeff Vance Martin, Michael (Alex) C Mcinturff
By
Cooperative Research Units

Diversity in spawning habitat use among Great Lakes Cisco populations

Cisco (Coregonus artedi) once dominated fish communities in the Laurentian Great Lakes. Restoring the abundance and distribution of this species has emerged as a management priority, yet our understanding of Cisco spawning habitat use is insufficient to characterise habitat needs for these populations and assess whether availability of suitable spawning habitat could be a constraint to recovery. W
Authors
Matthew R. Paufve, Suresh Sethi, Brian C. Weidel, Brian F. Lantry, Daniel Yule, Lars G. Rudstam, Jory L. Jonas, Eric K. Berglund, Michael J. Connerton, Dimitry Gorsky, Matthew Herbert, Jason Smith
By
Ecosystems Mission Area, Cooperative Research Units, Great Lakes Science Center

Projected stream fish community risk to climate impacts in the Northeastern and Midwestern United States

Climate change is expected to alter stream fish habitat potentially leading to changes in the composition and distribution of fish communities. In the Northeastern and Midwestern United States we identified the distribution and characteristics of those fish communities most and least at risk of experiencing changes in climate which deviate from the climate they are associated with. We classified s
Authors
N. Sievert, Craig Paukert, J. B. Whittier, Wesley Daniel, D.M. Infante, Jana Stewart
By
Water Resources Mission Area, Ecosystems Mission Area, Cooperative Research Units, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center, Wetland and Aquatic Research Center

A life cycle model for evaluating estuary residency and restoration potential in Chinook salmon

Understanding the spatial and temporal habitat use of a population is a necessary step for recovery planning. For Chinook salmon (Oncorhynchus tshawytscha), variation in their migration and habitat use complicate predicting how restoring habitats could impact total recruitment. To evaluate how juvenile life history variation affects a population’s response to potential restoration, we developed a
Authors
Emily K. Chen, Nicholas A. Som, John Deibner-Hanson, David G. Anderson, Mark J. Henderson
By
Cooperative Research Units

Hydrologic and environmental thresholds in stream fish assemblage structure across flow regimes

The characteristic pattern of variation in flow magnitude, frequency, duration, timing, and rate of change defines the flow regime of rivers and streams and is a key driver of ecosystem processes in fluvial ecosystems. Understanding how freshwater biotic assemblages change across gradients of hydrology and anthropogenic-source disturbance in different streamflow regimes is crucial to managing for
Authors
John Tyler Fox, Daniel D. Magoulick
By
Cooperative Research Units

A hierarchical approach to fish conservation in semiarid landscapes: A need to understand multiscale environmental relationships

A multiscale perspective is essential for conservation planning of riverine fishes. Coarse-scale habitat (e.g., basis) can influence both finer-scale habitat characteristics (e.g., reaches and microhabitat) and associated species distributions. Finer-scale management and habitat rehabilitation efforts can fail without the consideration of coarser-scale constraints. We provide a conceptual hierarch
Authors
Robert Michael Mollenhauer, Shannon K. Brewer, Desiree Moore, Dusty Swedberg, Maeghen Wedgeworth
By
Cooperative Research Units

Suppression of invasive fish in the west: Synthesis and suggestions for improvement

Reservoirs are ubiquitous features on the landscape of the western United States. Although reservoirs provide numerous benefits (e.g., irrigation, flood control, hydropower, recreational use), these systems are often a concern from an ecological perspective. Reservoirs support fisheries primarily composed of nonindigenous sport fishes that may become invasive and negatively influence recipient eco
Authors
Zachary B. Klein, Michael Quist, Christopher S. Guy
By
Cooperative Research Units

The effects of estradiol-17β on the sex reversal, survival, and growth of green sunfish Lepomis cyanellus

The feminization of green sunfish Lepomis cyanellus could expand their utility as a game fish or aquacultured species by preventing overcrowding and precocious reproduction in stocked systems. Feminization of green sunfish could also help elucidate information on their sex determination system. We report the feminization of green sunfish cohorts via oral administration of estradiol-17β (E2) during
Authors
Chad N. Teal, Daniel J. Schill, Susan B. Fogelson, Colby M. Roberts, Kevin Fitzsimmons, Javan Mathias Bauder, William T. Stewart, Scott A. Bonar
By
Cooperative Research Units

Estimating Pacific walrus abundance and survival with multievent mark-recapture models

Arctic marine ecosystems are undergoing rapid physical and biological change associated with climate warming and loss of sea ice. Sea ice loss will impact many species through altered spatial and temporal availability of resources. In the Bering and Chukchi Seas, the Pacific walrus Odobenus rosmarus divergens is one species that could be impacted by rapid environmental change, and thus, population

Authors
William S. Beatty, Patrick R. Lemons, Jason P. Everett, Cara J. Lewis, Rebecca L. Taylor, Robert J. Lynn, Suresh A. Sethi, Lori T. Quakenbush, John J. Citta, Michelle Kissling, Natalia Kryukova, John K. Wennburg
By
Ecosystems Mission Area, Cooperative Research Units, Alaska Science Center, Upper Midwest Environmental Sciences Center

Golden eagle nesting territory distribution in wind energy landscapes of the southern Great Plains

Deaths of four Golden Eagles (Aquila chrysaetos) due to collision trauma at a new wind energy facility in east-central New Mexico during 2004–2005 prompted concerns about the species' population status in the encompassing Southern Great Plains region, primarily because its breeding distribution there was poorly documented and wind energy development was expanding rapidly. Therefore, we conducted a
Authors
D.W. Stahlecker, Z.P. Wallace, D.G. Mikesic, Clint W. Boal, R.K. Murphy, W.H. Howe, M.B. Ruehmann
By
Cooperative Research Units

Foraging ecology of Red-billed Tropicbird Phaethon aethereus in the Caribbean during early chick rearing revealed by GPS tracking

Investigating the foraging patterns of tropical seabirds can provide important information about their ocean habitat affinities as well as prey choice. Foraging studies of Red-billed Tropicbird Phaethon aethereus populations in the Caribbean are lacking. We sought to rectify this by opportunistically sampling regurgitates at nest sites on the island of St. Eustatius, Lesser Antilles, and by linkin
Authors
H. Madden, Y. G. Satgé, B. Wilkinson, Patrick Jodice
By
Cooperative Research Units

Blood biochemistry and hematology of adult and chick brown pelicans in the northern Gulf of Mexico: Baseline health values and ecological relationships

The northern Gulf of Mexico supports a diverse community of nearshore seabirds during both breeding and nonbreeding periods of the annual cycle and is also a highly industrialized marine ecosystem with substantial levels of oil and gas development particularly in the west and central regions. Stakeholders in the region often assess risk to species of interest based on these differing levels of dev
Authors
Patrick Jodice, J.S. Lamb, Y.G. Satgé, Christine V. Fiorello
By
Cooperative Research Units
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