Publications
Filter Total Items: 1990
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
Mercury exposure of tidal marsh songbirds in the northeastern United States and its association with nest survival
The biogeochemistry of tidal marsh sediments facilitates the transformation of mercury (Hg) into the biologically available form methylmercury (MeHg), resulting in elevated Hg exposures to tidal marsh wildlife. Saltmarsh and Acadian Nelson’s sparrows (Ammospiza caudacutua and A. nelsoni subvirgatus, respectively) exclusively inhabit tidal marshes, potentially experiencing elevated risk to Hg expos
Authors
Katherine J Ruskin, Garth Herring, Collin Eagles-Smith, Alyssa B. Eiklor, Chris S Elphick, Matthew A. Etterson, Chrisopher B. Field, Rebecca A. Longnecker, Adrienne I. Kovach, W Greg Shriver, James F. Walsh, Brian J. Olsen
Are drought indices and climate data good indicators of ecologically relevant soil moisture dynamics in drylands?
Droughts are disproportionately impacting global dryland regions where ecosystem health and function are tightly coupled to moisture availability. Drought severity is commonly estimated using algorithms such as the standardized precipitation-evapotranspiration index (SPEI), which can estimate climatic water balance impacts at various hydrologic scales by varying computational length. However, the
Authors
David Barnard, Matthew Germino, John B. Bradford, Rory O'Connor, Caitlin M. Andrews, Robert K Shriver
Climatic aridity shapes post-fire interactions between Ceanothus spp. and Douglas-fir (Pseudotsuga menziesii) across the Klamath Mountains
Climate change is leading to increased drought intensity and fire frequency, creating early-successional landscapes with novel disturbance–recovery dynamics. In the Klamath Mountains of northwestern California and southwestern Oregon, early-successional interactions between nitrogen (N)-fixing shrubs (Ceanothus spp.) and long-lived conifers (Douglas-fir) are especially important determinants of fo
Authors
Damla Cinoglu, Howard E Epstein, Alan J. Tepley, Kristina J. Anderson-Teixeira, Jonathan R. Thompson, Steven Perakis
Riverscape approaches in practice: Perspectives and applications
Landscape perspectives in riverine ecology have been undertaken increasingly in the last 30 years, leading aquatic ecologists to develop a diverse set of approaches for conceptualizing, mapping and understanding ‘riverscapes’. Spatiotemporally explicit perspectives of rivers and their biota nested within the socio-ecological landscape now provide guiding principles and approaches in inland fisheri
Authors
Christian E. Torgersen, Céline Le Pichon, Aimee H. Fullerton, Stephen J. Dugdale, Jeffrey J. Duda, Floriane Giovannini, Évelyne Tales, Jérôme Belliard, Paulo Branco, Normand E. Bergeron, Mathieu L. Roy, Diego Tonolla, Nicolas Lamouroux, Hervé Capra, Colden V. Baxter