Publications
Filter Total Items: 1995
Post-release survival of translocated fishers: Implications for translocation success
As a vital tool for the conservation of species at risk, translocations are also opportunities to identify factors that influence translocation success. We evaluated factors associated with post-release survival of 90 radio-tracked fishers (Pekania pennanti) translocated from central British Columbia, Canada, to the Olympic Peninsula of Washington, USA, from 2008 to 2011. We hypothesized that the
Authors
Jeffrey C. Lewis, Kurt Jenkins, Patricia J. Happe, David J. Manson, Paul C. Griffin
Pathways of productivity and influences on top consumers in forested streams
Forested stream ecosystems involve complex physical and biotic pathways that can influence fish in numerous ways. Consequently, the responses of fish communities to disturbance can be difficult to understand. In this study, we employed a food web model that links biotic (e.g., physiology, predator–prey interactions) and abiotic (e.g., temperature, sunlight) attributes to address fish responses to
Authors
Joseph R. Benjamin, Jason B. Dunham, Sherri L Johnson, Linda Ashkenas, Brooke E Penaluna, Robert E Bilby, Douglas S. Bateman, David W. Leer, James R Bellmore
Age-specific survival rates, causes of death, and allowable take of golden eagles in the western United States
In the United States, the Bald and Golden Eagle Protection Act prohibits take of golden eagles (Aquila chrysaetos) unless authorized by permit, and stipulates that all permitted take must be sustainable. Golden eagles are unintentionally killed in conjunction with many lawful activities (e.g., electrocution on power poles, collision with wind turbines). Managers who issue permits for incidental ta
Authors
Brian Milsap, Guthrie S. Zimmerman, William L. Kendall, Joseph G. Barnes, Melissa A. Braham, Bryan E Bedrosian, Douglas A. Bell, Peter H. Bloom, Ross H. Crandall, Robert Domenech, Daniel Driscoll, Adam E. Duerr, Rick Gerhardt, Samantha E.J. Gibbs, Alan R. Harmata, Kenneth Jacobson, Todd E. Katzner, Robert N. Knight, J. Michael Lockhart, Carol McIntyre, Robert K. Murphy, Steven J. Slater, Brian W. Smith, Jeff P. Smith, Dale W. Stahlecker, James W. Watson
Golden eagle occupancy surveys and monitoring strategy in coastal southern California, United States
Golden eagles (Aquila chrysaetos) are of increasing conservation concern in western North America. Effective conservation measures for this wide-ranging, federally protected raptor species require monitoring frameworks that accommodate strong inference on the status of breeding populations across vast landscapes. We used a broad-scale sampling design to identify relationships between landscape con
Authors
David Wiens, Peter H. Bloom, Melanie C. Madden, Patrick Kolar, Jeff A. Tracey, Robert N. Fisher
Influence of anthropogenic subsidies on movements of common ravens
Anthropogenic subsidies can benefit populations of generalist predators such as common ravens (ravens; Corvus corax), which in turn may depress populations of many types of species at lower-trophic levels, including desert tortoises (Gopherus agassizii) or greater sage-grouse (Centrocercus urophasianus). Management of subsidized ravens often has targeted local breeding populations that are presume
Authors
Adam E. Duerr, Peter H. Bloom, Kerry Ross, Tricia A. Miller, Melissa A. Braham, Amy L Fesnock, Todd E. Katzner
Reconnecting the Elwha River: Spatial patterns of fish response to dam removal
The removal of two large dams on the Elwha River was completed in 2014 with a goal of restoring anadromous salmonid populations. Using observations from ongoing field studies, we compiled a timeline of migratory fish passage upstream of each dam. We also used spatially continuous snorkeling surveys in consecutive years before (2007, 2008) and after (2018, 2019) dam removal during summer baseflow t
Authors
Jeffrey J. Duda, Christian E. Torgersen, Samuel J. Brenkman, Roger J. Peters, Kathryn T. Sutton, Heidi A. Connor, Philip R. Kennedy, Stephen C. Corbett, Ethan Z. Welty, Anna Geffre, Josh Geffre, Patrick Crain, Dave Shreffler, John R. McMillan, Mike McHenry, George R. Pess
What are the toxicological effects of mercury in Arctic biota?
No abstract available.
Authors
Rune Dietz, Robert J. Letcher, Josh T. Ackerman, Benjamin D. Barst, Niladri Basu, Olivier Chastel, John Chételat, Sam Dastnai, Jean-Pierre Desforges, Collin A. Eagles-Smith, Igor Eulaers, Jérôme Fort, Jacob Nabe-Nielsen, Feiyue Wang, Simon Wilson
Plant community succession following ungulate exclusion in a temperate rainforest
Ecosystem structure and processes of coastal temperate rainforests of the Pacific Northwest are thought to be strongly influenced by herbivory primarily of Roosevelt elk (Cervus elaphus roosevelti) and secondarily of Columbian black-tailed deer (Odocoileus hemionus columbianus). Two large (0.5-ha) exclosures were built in old-growth coniferous rainforest communities in Olympic National Park, Washi
Authors
Andrea Woodward, Kurt Jenkins, Mark E Harmon
Golden eagle population surveys in the vicinity of the Altamont Pass Wind Resource Area, California, 2014–21
Golden Eagles (Aquila chrysaetos) are among the highest profile species killed by collisions with wind turbines at the Altamont Pass Wind Resource Area (APWRA) in the northern Diablo Range of west-central California. Understanding the distribution, site occupancy, and nesting status of eagles near the APWRA is needed to identify and minimize possible population-level impacts. We established a broa
Authors
J. David Wiens, Patrick S. Kolar
Factors influencing the post-release movements of translocated fishers: Implications for translocation success
Long distance, post-release movements of translocated wildlife can be a key factor limiting translocation success. Yet, for many species, we have little or no understanding of factors that influence post-release movements. Translocations have been important for recovering fisher Pekania pennanti populations across the southern portion of their North American range. However, little is known abou
Authors
Jeffrey C. Lewis, Patricia J. Happe, Kurt Jenkins, David J. Manson
Thermal conditions predict intraspecific variation in senescence rate in frogs and toads
Variation in temperature is known to influence mortality patterns in ectotherms. Even though a few experimental studies on model organisms have reported a positive relationship between temperature and actuarial senescence (i.e., the increase in mortality risk with age), how variation in climate influences the senescence rate across the range of a species is still poorly understood in free-ranging
Authors
Hugo Cayuela, Jean-François Lemaître, Erin L. Muths, Rebecca McCaffery, Thierry Frétey, Bernard Le Garff, Benedikt R. Schmidt, Kurt Grossenbacher, Omar Lenzi, Blake R. Hossack, Lisa A Eby, Brad A. Lambert, Johan Elmberg, Juha Merilä, Jérôme MW Gippet, Jean-Michel Gaillard, David Pilliod
Patterns of post-fire invasion of semiarid shrub-steppe reveals a diversity of invasion niches within an exotic annual grass community
Disturbances such as fire provide an opportunity for invasive plant species to exploit newly created niche space. Whether initial invaders facilitate, compete with, or do not affect later invaders is important to determine in communities affected by multiple invaders. This analysis focuses on the newer invaders Taeniatherum caput-medusae (medusahead) and Ventenata dubia (ventenata) in sagebrush-st
Authors
Cara Applestein, Matthew Germino