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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: 4348

Using biodiversity metrics to guide conservation planning in altered tropical landscapes

Biodiversity metrics are frequently used to guide conservation planning because they can summarize biogeographical attributes of plant and animal communities quickly and at multiple scales. Attributes include habitat features of high conservation value, representativeness, and redundancy of biological communities. We conducted a rapid ecological assessment of resident avian species in the west-cen
Authors
K. E. Battle, Krishna Pacifici, Jaime A. Collazo, B. J. Reigh

Case study 1: Acoustic Surveys at Fort Drum Military Installation – the Value of Long-term Monitoring

Prior to the advent of white-nose syndrome (WNS), most bat conservation in the eastern United States consisted of one issue: the known or suspected presence of the endangered Indiana bat (Myotis sodalis). The National Environmental Policy Act and the Endangered Species Act requires Department of Defense land managers to prioritize identification, monitoring, and conservation of Indiana bat day-roo
Authors
W. Mark Ford, Christopher A. Dobony, David S. Jachowski, Laci S. Coleman, Tomas Nocera, Eric R. Britzke

Inter-individual differences in the foraging behavior of breeding Adélie penguins are driven by individual quality and sex

Inter-individual differences in demographic traits of iteroparous species can arise through learning and maturation, as well as from permanent differences in individual ‘quality’ and sex-specific constraints. As the ability to acquire energy determines the resources an individual can allocate to reproduction and self-maintenance, foraging behavior is a key trait to study to better understand the m
Authors
Amelie Lescroël, Phil O’B. Lyver, Dennis Jongsomjit, Sam Veloz, Katie Dugger, Peter Kappes, Brian J. Karl, Amy L. Whitehead, Roger Pech, Theresa L. Cole, Grant Ballard

Intrinsic and extrinsic drivers of life-history variability for a south-western cutthroat trout

The impacts of climate change on cold-water fishes will likely negatively manifest in populations at the trailing edge of their distributions. Rio Grande cutthroat trout (Oncorhynchus clarkii virginalis, RGCT) occupy arid south-western U.S. streams at the southern-most edge of all cutthroat trout distributions, making RGCT particularly vulnerable to the anticipated warming and drying in this regio
Authors
Brock M. Huntsman, Colleen A. Caldwell, Abigail Lynch, Fitsum Abadi

Northern Goshawk (Accipiter gentilis) home range, movement and forays revealed by GPS-tracking

The Northern Goshawk (Accipiter gentilis) is an apex predator occurring across North America and Eurasia. The species has received considerable conservation focus in late-seral conifer forests of western North America, where its habitat has been substantially reduced and altered by timber harvest and is increasingly at risk from high severity fire, drought, and forest pathogens. In the Sierra Neva
Authors
R.V. Blakley, R.B. Siegel, Elisabeth B. Webb, C.P. Dillingham, M. Tracy Johnson, D.C. Kesler

Variation in black bass angler characteristics by stream size and accessibility in Oklahoma’s Ozark Highland streams

Fishing in streams and rivers is a popular outdoor recreation activity in eastern Oklahoma, where most anglers target black bass (Micropterus) species. Since the early 1990s, when the last assessment of black bass fishing in the region was conducted, broadscale factors such as harvesting behavior, state fishery regulations, and bass population dynamics have changed. In 2018, we conducted creel and
Authors
B. Chapagain, James M. Long, Andrew T. Taylor, O. Joshi

Canada goose survival and recovery rates in urban and rural areas of Iowa, USA

Once extirpated from much of their North American range, temperate-breeding Canada geese (Branta canadensis maxima) have reached high abundance. As a result, focus has shifted from restoration to managing harvest and addressing human-goose conflict. Conflict persists or is increasing in urban areas throughout the Mississippi Flyway. Managers need more information regarding demographic rates to det
Authors
Benjamin Z. Luukkonen, Orrin E. Jones, Robert W. Klaver

Survival and movement patterns of Rainbow Trout stocked in a groundwater-influenced warmwater stream

Stocking Rainbow Trout Oncorhynchus mykiss to create additional angling opportunities is common; however, the spatial and temporal dynamics of such stocking practices are unclear in groundwater-influenced, warmwater streams. Our objectives were to determine Rainbow Trout dispersal from a stocking location on Spavinaw Creek, Oklahoma and to quantify apparent survival of two cohorts of Rainbow Trout
Authors
S. L. Wolf, Shannon K. Brewer

Exploring relationships among stream health, human well-being, and demographics in Virginia, USA

Quantification of empirical relationships between ecosystem health and human well-being is uncommon at broad spatial scales. We used public data for Virginia (USA) counties to examine pairwise correlations among two indicators of stream health, thirteen indicators of human well-being, and four demographic metrics. Our indicators of stream health included the Virginia Stream Condition Index (VSCI)
Authors
Paul L. Angermeier, Marc J. Stern, Leigh Anne Krometis, Tyler L. Hemby

Effects of increased temperature on arctic slimy sculpin Cottus cognatus is mediated by food availability: Implications for climate change

Lakes are vulnerable to climate change, and warming rates in the Arctic are faster than anywhere on Earth. Fishes are sensitive to changing temperatures, which directly control physiological processes. Food availability should partly dictate responses to climate change because energetic demands change with temperature, but few studies have simultaneously examined temperature and food availability.
Authors
Casey A. Pennock, Phaedra E. Budy, Carla Atkinson, Nick Barrett

Estimating the invasion extent of Asian swamp eel (Monopterus: Synbranchidae) in an altered river of the south-eastern United States

The first reported invasion of Asian swamp eels (Monopterus albus, ASE) in the continental United States was in the state of Georgia in 1994. This population was first discovered within several ponds on a private nature centre, but the ponds drained via an outflow pipe into marsh habitats along the Chattahoochee River. Our objective was to delineate the current invasion extent of ASE in the Chatta
Authors
J. R. Johnson, A. T. Taylor, James M. Long

Comparing husbandry techniques for optimal head-starting of the Mojave desert tortoise (Gopherus agassizii)

Mojave Desert Tortoise (Gopherus agassizii) populations continue to decline throughout their range. Head-starting—the captive rearing of offspring to a size where they are presumably more likely to survive post-release—is being explored as a potential recovery tool. Previous Desert Tortoise head-starting programs have reared neonates exclusively outdoors. Here, we explore using a combination of in
Authors
P. A. McGovern, K. A. Buhlmann, B. D. Todd, Clinton T. Moore, J. M. Peaden, J. Hepinstall-Cymerman, J. A. Daly, T. D. Tuberville
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