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Publications

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.

Filter Total Items: 5125

Demographic drivers of a refugee species: Large‐scale experiments guide strategies for reintroductions of hirola Demographic drivers of a refugee species: Large‐scale experiments guide strategies for reintroductions of hirola

Effective reintroduction strategies require accurate estimates of vital rates and the factors that influence them. The hirola (Beatragus hunteri) is the rarest antelope on Earth, with a global population size of
Authors
Abdullahi H. Ali, Matthew J. Kauffman, Rajan Amin, Amos Kibara, Juliet King, David P. Mallon, Charles Musyoki, Jacob R. Goheen

Rearing environment influences boldness and prey acquisition behavior, and brain and lens development of bull trout Rearing environment influences boldness and prey acquisition behavior, and brain and lens development of bull trout

Animals reared in barren captive environments exhibit different developmental trajectories and behaviors than wild counterparts. Hence, the captive phenotypes may influence the success of reintroduction and recovery programs for threatened and endangered species. We collected wild bull trout embryos from the Metolius River Basin, Oregon and reared them in differing environments to better
Authors
William R. Brignon, Martin M. Pike, Lars O.E. Ebbesson, Howard A. Schaller, James T. Peterson, Carl B. Schreck

Efficacy of otoliths and first dorsal spines for preliminary age and growth determination in Atlantic Tripletails Efficacy of otoliths and first dorsal spines for preliminary age and growth determination in Atlantic Tripletails

The Atlantic Tripletail Lobotes surinamensis is a popular sport fish for which age and growth data are scarce in general and nonexistent for Georgia (GA), USA, waters. These data are necessary to ensure that management regulations are adequate to protect this species, especially given its popularity as a sport fish. We evaluated whether otoliths and spines were suitable for determining...
Authors
Russell T. Parr, Robert B. Bringolf, Cecil A. Jennings

Monitoring Least Bitterns (Ixobrychis exilis) in Vermont: Detection probability and occupancy modeling Monitoring Least Bitterns (Ixobrychis exilis) in Vermont: Detection probability and occupancy modeling

Ixobrychus exillis (Least Bittern) is listed as a species of high concern in the North American Waterbird Conservation Plan and is a US Fish and Wildlife Service migratory bird species of conservation concern in the Northeast. Little is known about the population of Least Bitterns in the Northeast because of their low population density, tendency to nest in dense wetland vegetation, and...
Authors
Aswini Cherukuri, Allan Strong, Therese M. Donovan

Evidence for regional nitrogen stress on chlorophyll a in lakes across large landscape and climate gradients Evidence for regional nitrogen stress on chlorophyll a in lakes across large landscape and climate gradients

Nitrogen (N) and phosphorus (P) commonly stimulate phytoplankton production in lakes, but recent observations from lakes from an agricultural region suggest that nitrate may have a subsidy‐stress effect on chlorophyll a (Chl a). It is unclear, however, how generalizable this effect might be. Here, we analyzed a large water quality dataset of 2385 lakes spanning 60 regions across 17...
Authors
Christopher T. Filstrup, Tyler Wagner, Samantha K. Oliver, Craig A. Stow, Katherine E. Webster, Emily H. Stanley, John A. Downing

Response of beach-nesting American Oystercatchers to off-road vehicles: An experimental approach reveals physiological nuances and decreased nest attendance Response of beach-nesting American Oystercatchers to off-road vehicles: An experimental approach reveals physiological nuances and decreased nest attendance

Shorebird populations face increasing challenges as rising sea levels and growing human populations constrain their breeding habitats. On recreational beaches, the nesting season often coincides with a season of high visitor use, increasing the potential for conflict, which may negatively influence beach-nesting shorebird species. We designed a field experiment to study the responses of...
Authors
Shilo K. Felton, Kenneth H. Pollock, Theodore R. Simons

Quantifying seining detection probability for fishes of Great Plains sand‐bed rivers Quantifying seining detection probability for fishes of Great Plains sand‐bed rivers

Species detection error (i.e., imperfect and variable detection probability) is an essential consideration when investigators map distributions and interpret habitat associations. When fish detection error that is due to highly variable instream environments needs to be addressed, sand‐bed streams of the Great Plains represent a unique challenge. We quantified seining detection...
Authors
Robert Mollenhauer, Daniel R. Logue, Shannon K. Brewer

Combining multiple sources of data to inform conservation of Lesser Prairie-Chicken populations Combining multiple sources of data to inform conservation of Lesser Prairie-Chicken populations

Conservation of small populations is often based on limited data from spatially and temporally restricted studies, resulting in management actions based on an incomplete assessment of the population drivers. If fluctuations in abundance are related to changes in weather, proper management is especially important, because extreme weather events could disproportionately affect population...
Authors
Beth Ross, David A. Haukos, Christian A. Hagen, James Pitman

Species‐ and habitat‐specific otolith chemistry patterns inform riverine fisheries management Species‐ and habitat‐specific otolith chemistry patterns inform riverine fisheries management

Geology and hydrology are drivers of water chemistry and thus important considerations for fish otolith chemistry research. However, other factors such as species and habitat identity may have predictive ability, enabling selection of appropriate elemental signatures prior to costly, perhaps unnecessary water/age‐0 fish sampling. The goal of this study was to develop a predictive...
Authors
William Radigan, Andrew K. Carlson, Jeremy Kientz, Steven R. Chipps, Mark J. Fincel, Brian D. S. Graeb

Distinguishing values from science in decision making: Setting harvest quotas for mountain lions in Montana Distinguishing values from science in decision making: Setting harvest quotas for mountain lions in Montana

The relative roles of science and human values can be difficult to distinguish when informal processes are used to make complex and contentious decisions in wildlife management. Structured Decision Making (SDM) offers a formal process for making such decisions, where scientific results and concepts can be disentangled from the values of differing stakeholders. We used SDM to formally...
Authors
Michael S. Mitchell, Hilary Cooley, Justin A. Gude, Jay Kolbe, J. Joshua Nowak, Kelly M. Proffitt, Sarah N. Sells, Mike Thompson

Adaptive influence of extrinsic and intrinsic factors on variation of incubation periods among tropical and temperate passerines Adaptive influence of extrinsic and intrinsic factors on variation of incubation periods among tropical and temperate passerines

Understanding intrinsic (physiological) and extrinsic (e.g., temperature) causes of variation in embryonic development time (incubation period) is important because they can have different impacts on individual quality. Robert Ricklefs and colleagues have argued that longer incubation periods result primarily from intrinsic physiological programs that increase individual quality and...
Authors
Thomas E. Martin, Riccardo Ton, Juan C. Oteyza
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