Publications
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Implications of tree expansion in shrubland ecosystems for two generalist avian predators Implications of tree expansion in shrubland ecosystems for two generalist avian predators
Shrublands globally have undergone structural changes due to plant invasions, including the expansion of native trees. Removal of native conifer trees, especially juniper (Juniperus spp.), is occurring across the Great Basin of the western U.S. to support declining sagebrush (Artemisia spp.) habitats and associated wildlife species, such as greater sage-grouse (Centrocercus urophasianus)...
Authors
Aaron C. Young, Todd E. Katzner, Douglas J. Shinneman, Tracey N. Johnson
Modeling the spatial distribution of carcasses of eagles killed by wind turbines Modeling the spatial distribution of carcasses of eagles killed by wind turbines
Currently, the US Fish and Wildlife Service makes eagle permitting and management decisions nationwide based on a limited understanding of the impacts of wind power generation on eagles, and the factors that influence risk at a given facility. Accurate estimates of eagle mortality at wind power facilities form the basis for comparing the magnitudes of mortality rates in different areas...
Authors
Manuela Huso, Daniel Dalthorp, Jeffrey Michael Mintz, Torgeir Nygard, Roel May
Captive breeding, husbandry, release, and translocation of sciurids Captive breeding, husbandry, release, and translocation of sciurids
Captive breeding and release programs have been instrumental in preventing the extinction of some wildlife species, but these programs have been less successful for other species. Evaluating initial guidelines for procedures to start a captive breeding and release program for a particular species is an important first step in the process of initiating such a program. The Mohave ground...
Authors
Sharon A Poessel
Multi-scale relationships in thermal limits within and between two cold-water frog species uncover different trends in physiological vulnerability Multi-scale relationships in thermal limits within and between two cold-water frog species uncover different trends in physiological vulnerability
1. Critical thermal limits represent an important component of an organism's capacity to cope with future temperature changes. Understanding the drivers of variation in these traits may uncover patterns in physiological vulnerability to climate change. Local temperature extremes have emerged as a major driver of thermal limits, although their effects can be mediated by the exploitation...
Authors
Amanda S. Cicchino, Alisha A. Shah, Brenna R. Forester, Jason B. Dunham, Cameron K. Ghalambor, W. Chris Funk
Anticoagulant rodenticides are associated with increased stress and reduced body condition of avian scavengers in the Pacific Northwest Anticoagulant rodenticides are associated with increased stress and reduced body condition of avian scavengers in the Pacific Northwest
Anticoagulant rodenticides (AR) have been used globally to manage commensal rodents for decades. However their application has also resulted in primary, secondary, and tertiary poisoning in wildlife. Widespread exposure to ARs (primarily second generation ARs; SGARs) in raptors and avian scavengers has triggered considerable conservation concern over their potential effects on...
Authors
Garth Herring, Collin A. Eagles-Smith, Jeremy A. Buck
A retrospective assessment of fuel break effectiveness for containing rangeland wildfires in the sagebrush biome A retrospective assessment of fuel break effectiveness for containing rangeland wildfires in the sagebrush biome
Escalated wildfire activity within the western U.S. has widespread societal impacts and long-term consequences for the imperiled sagebrush (Artemisia spp.) biome. Shifts from historical fire regimes and the interplay between frequent disturbance and invasive annual grasses may initiate permanent state transitions as wildfire frequency outpaces sagebrush communities’ innate capacity to...
Authors
Cali L. Weise, Brianne E. Brussee, Peter S. Coates, Douglas J. Shinneman, Michele R. Crist, Cameron L. Aldridge, Julie A. Heinrichs, Mark A. Ricca
A 37 K SNP array for the management and conservation of Golden Eagles (Aquila chrysaetos) A 37 K SNP array for the management and conservation of Golden Eagles (Aquila chrysaetos)
We describe the development of a custom 37 K Affymetrix Axiom myDesign single nucleotide polymorphism (SNP) array for a culturally and ecologically important apex predator, the golden eagle (Aquila chrysaetos). Using this SNP array, we performed population genomic analysis on 154 individuals of known natal localities and detected three genetic clusters that we designated as Taiga/High...
Authors
Megan E. Judkins, Gary W. Roemer, Brian Millsap, Joseph G. Barnes, Bryan E. Bedrosian, Stephen L. Clarke, Robert Domenech, Garth Herring, Myles Lamont, Brian W. Smith, Dale W. Stahlecker, Matthew J. Stuber, Wesley C. Warren, Ronald A. Van Den Bussche
Ferruginous Hawk movements respond predictably to intra-annual variation but unexpectedly to anthropogenic habitats Ferruginous Hawk movements respond predictably to intra-annual variation but unexpectedly to anthropogenic habitats
Birds exhibit flexible movement responses to environmental variation across the annual cycle, and those responses can provide insight into potential impacts that environmental changes may have on these species. To understand year-round variation in space use by Ferruginous Hawks Buteo regalis, we tracked 12 birds breeding in southwestern Idaho, USA, using GPS telemetry collected over 207...
Authors
Georgia H. Isted, Robert J. Thomas, Kevin S. Warner, Matthew J. Stuber, Ethan A. Ellsworth, Todd E. Katzner
Tree symbioses sustain nitrogen fixation despite excess nitrogen supply Tree symbioses sustain nitrogen fixation despite excess nitrogen supply
Symbiotic nitrogen fixation (SNF) is a key ecological process whose impact depends on the strategy of SNF regulation—the degree to which rates of SNF change in response to limitation by N versus other resources. SNF that is obligate or exhibits incomplete downregulation can result in excess N fixation, whereas a facultative SNF strategy does not. We hypothesized that tree-based SNF...
Authors
Duncan N.L. Menge, Amelia A. Wolf, Jennifer L. Funk, Steven S. Perakis, Palani R. Akana, Rachel Arkebauer, Thomas A. Bytnerowicz, K. A. Carreras Pereira, Alexandra M. Huddell, Sian Kou-Giesbrecht, Sarah K. Ortiz
Estimating northern spotted owl (Strix occidentalis caurina) pair detection probabilities based on call-back surveys associated with long-term mark-recapture studies, 1993–2018 Estimating northern spotted owl (Strix occidentalis caurina) pair detection probabilities based on call-back surveys associated with long-term mark-recapture studies, 1993–2018
The northern spotted owl (Strix occidentalis caurina; hereinafter NSO) was listed as “threatened” under the Endangered Species Act in 1990 and population declines have continued since that listing. Given the species’ protected status, any proposed activities on Federal lands that might impact NSO require consultation with U.S. Fish and Wildlife Service and part of that consultation often...
Authors
Katie M. Dugger, Alan B. Franklin, Damon B. Lesmeister, Raymond J. Davis, J. David Wiens, Gary C. White, James D. Nichols, James E. Hines, Charles B. Yackulic, Carl J. Schwarz, Steven H. Ackers, L. Steven Andrews, Larissa L. Bailey, Robin Bown, Jesse Burgher, Kenneth P. Burnham, Peter C. Carlson, Tara Chestnut, Mary M Conner, Krista E. Dilione, Eric D. Forsman, Scott A. Gremel, Keith A. Hamm, Dale R. Herter, J. Mark Higley, Rob B. Horn, Julianna M Jenkins, William L. Kendall, David W Lamphear, Christopher McCafferty, Trent L. McDonald, Janice A Reid, Jeremy T. Rockweit, David C. Simon, Stan G Sovern, James K. Swingle, Heather Wise
Supervised versus unsupervised approaches to classification of accelerometry data Supervised versus unsupervised approaches to classification of accelerometry data
Sophisticated animal-borne sensor systems are increasingly providing novel insight into how animals behave and move. Despite their widespread use in ecology, the diversity and expanding quality and quantity of data they produce have created a need for robust analytical methods for biological interpretation. Machine learning tools are often used to meet this need. However, their relative
Authors
Maitreyi Sur, Jonathan C. Hall, Joseph Brandt, Molly Astell, Sharon A. Poessel, Todd E. Katzner
Who spawns where? Temperature, elevation, and discharge differentially affect the distribution of breeding by six Pacific salmonids within a large river basin Who spawns where? Temperature, elevation, and discharge differentially affect the distribution of breeding by six Pacific salmonids within a large river basin
Within the geographic range of salmonid fishes, many apparently suitable rivers and streams are used for reproduction by some species but not others. This is widely known but seldom addressed, as studies often examine factors determining the distribution of one or only a few species. We examined physical factors associated with the spawning distribution of six native Pacific salmonids...
Authors
Catherine S Austin, Christian E. Torgersen, Thomas P. Quinn