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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: 5083

Estimating recruitment of Largemouth Bass to exceptional weights using angler-reported catches Estimating recruitment of Largemouth Bass to exceptional weights using angler-reported catches

ABSTRACTObjective Although most facets of Largemouth Bass Micropterus nigricans ecology have been researched, the upper tiers of weight distributions (i.e., ≥3.6 kg; herein, “lunkers”) have received little attention due to the challenges of collecting sufficient sample sizes. Our aim was to estimate Largemouth Bass recruitment to higher weights after reaching 3.6 kg and to identify...
Authors
Leandro E. Miranda, Frank Griffin, Natalie Goldstrohm, J. Wesley Neal, Thomas J. Lang

Modeling diverse environmental responses of reservoirs to floating photovoltaic systems Modeling diverse environmental responses of reservoirs to floating photovoltaic systems

Floating photovoltaic (FPV) systems are emerging as a promising strategy for large-scale clean energy production worldwide. However, by altering key physical drivers such as solar radiation and wind mixing, FPV installations may have also unintended consequences for lakes and reservoirs. Given the wide diversity of freshwater systems globally, understanding the consistency in direction...
Authors
Evan M. Bredeweg, Ivan Arismendi, Christina Amy Murphy, Sarah K. Henkel

Mechanisms influencing thermal refuges and territory occupancy by collared pikas during summer and winter Mechanisms influencing thermal refuges and territory occupancy by collared pikas during summer and winter

Collared pikas (Ochotona collaris) are cold adapted alpine lagomorphs of western Canada and Alaska, USA, that are vulnerable to direct and indirect effects of climate change. However, how and to what extent such changes influence persistence for this species is not well understood, particularly at fine spatial scales. Our goal was to evaluate how microclimate and microhabitat...
Authors
Lillian A. Harrison, Katherine S. Christie, Collette Brandt, Matthew Richard Falcy, Sophie L. Gilbert, Janet L. Rachlow

Fitness consequences of catastrophic wildfire are mitigated by behavioral responses of an iconic bird Fitness consequences of catastrophic wildfire are mitigated by behavioral responses of an iconic bird

Background Drought, human disturbance, and invasive species are reshaping disturbance regimes and increasing the scale, severity, and frequency of wildfire in many ecosystems around the globe, including the sagebrush steppe of western North America. Recent studies suggested greater sage-grouse (Centrocercus urophasianus) adhere to strong site fidelity in the aftermath of wildfire...
Authors
Bryan S. Stevens, Courtney J. Conway, Shane B. Roberts, Devin K. Englestead

Acoustic response of bats to the Brood X Periodical Cicada (Magicicada spp.) emergence Acoustic response of bats to the Brood X Periodical Cicada (Magicicada spp.) emergence

Periodical cicada emergences can positively affect vertebrate reproduction and breeding behavior, yet this response is not well studied for bats. We examined the acoustic response of 6 species/phonic groups of bats in 2021 to the emergence of Brood X periodical cicadas, along the Potomac River corridor, in Maryland and Virginia. Using a before-after-control-impact study design, we...
Authors
Amber S. Litterer, Samuel R. Freeze, W. Mark Ford

Laboratory transmission of adult salmon enteritis and associated pathogens in juvenile Chinook salmon (Oncorhynchus tshawytscha) Laboratory transmission of adult salmon enteritis and associated pathogens in juvenile Chinook salmon (Oncorhynchus tshawytscha)

Adult salmon enteritis (ASE), characterised by severe ulcerative enteritis, has been linked to prespawn mortality (PSM) in spring Chinook salmon (Oncorhynchus tshawytscha) in certain rivers in Oregon, USA. Catastrophic losses of spring Chinook salmon have resulted from PSM, a significant threat to their population stability. Understanding the causes of ASE is therefore critical for...
Authors
Tamsen Polley, Claire Elizabeth Couch, Connor Leong, James T. Peterson, Louis M. Weiss, Peter M. Takvorian, Michael L. Kent

Evaluating detection of temporal trends in long-term freshwater fisheries data to inform future monitoring efforts Evaluating detection of temporal trends in long-term freshwater fisheries data to inform future monitoring efforts

Objective Florida’s Freshwater Fisheries Long-Term Monitoring Program was implemented in 2006 to track changes in freshwater fish populations and communities. As part of an evaluation of the program, this study used a simulation framework to assess trend detection for fish abundance and biomass indices and how sampling intensity (number of samples per year) and frequency (number of years...
Authors
Kimberly I. Bonvechio, Colin P. Shea, Andrew Kenneth Carlson

Irrigated agriculture influences selenium levels in an endangered marsh bird Irrigated agriculture influences selenium levels in an endangered marsh bird

Selenium bioaccumulation in aquatic food webs poses risks to wildlife, particularly in wetlands receiving irrigation runoff. The Salton Sea, California’s largest lake, is primarily sustained by agricultural drainage. This drainage creates wetland habitat along the lakeshore that many bird species depend on, including the federally endangered Yuma Ridgway’s rail (Rallus obsoletus...
Authors
Cydney M. Yost, Kathryn M. Sliwa, Razia Shafique-Sabir, Jonathan Shore, Courtney J. Conway

Seaward movements and mortality of Atlantic salmon Salmo salar L. kelts in the Penobscot River, Maine Seaward movements and mortality of Atlantic salmon Salmo salar L. kelts in the Penobscot River, Maine

The Atlantic salmon Salmo salar L. is an endangered species in the United States, but post-spawn downstream movements remain poorly understood. We conducted a 2-year acoustic telemetry study to characterize downstream movements and to quantify apparent mortality and downstream passage of post-spawn adults (kelts) in the Penobscot River, Maine, USA (N = 112). The majority of tagged S...
Authors
Carolyn A. Merriam, Danielle M. Frechette, Joseph D. Zydlewski

Longer rorqual whale mothers produce more female offspring Longer rorqual whale mothers produce more female offspring

Multiple hypotheses have arisen that predict how mammals with the ability to adapt fetal sex ratios should invest in male versus female offspring to maximize inclusive fitness, but large wild-population datasets necessary for testing these hypotheses are challenging to collect. We used whaling data (n = 209 254 sexed fetuses from seven rorqual whale species) to test whether mothers with...
Authors
Zoe R. Rand, Trevor A. Branch, Sarah J. Converse

Breeder turnover creates allelic variation in groups of gray wolves Breeder turnover creates allelic variation in groups of gray wolves

Genetic diversity is an important driver affecting the health of wildlife populations. In cooperatively breeding species, human impacts and breeder turnover can affect genetic diversity in groups. We generally do not have strong inferences about how the genetic composition of a group changes through time as individuals are lost (e.g., die, emigrate) or adopted (e.g., immigrate). I wanted...
Authors
David Edward Ausband

Integrated species distribution model using historical data shows decline in a common semi-aquatic mammal Integrated species distribution model using historical data shows decline in a common semi-aquatic mammal

Effective conservation requires an understanding of drivers of a species' distribution as well as long-term changes in their distribution. In recent decades, advances in data collection and analysis have allowed researchers to integrate a wide range of information to model species distributions, particularly by allowing presence-only data and detection-nondetection data to be formally...
Authors
John G. Crockett, Charles B. Brown, Brian Daniel Gerber
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