Publications
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Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon
The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted owls has emerged in the form of an invasive...
Authors
J. David Wiens, Robert G. Anthony, Eric D. Forsman
Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study
With seasonal wetting and drying, and high biological productivity, agricultural wetlands (rice paddies) may enhance the conversion of inorganic mercury (Hg(II)) to methylmercury (MeHg), the more toxic, organic form that biomagnifies through food webs. Yet, the net balance of MeHg sources and sinks in seasonal wetland environments is poorly understood because it requires an annual...
Authors
Lisamarie Windham-Myers, Jacob A. Fleck, Joshua T. Ackerman, Mark C. Marvin-DiPasquale, Craig A. Stricker, Wesley A. Heim, Philip Bachand, Collin A. Eagles-Smith, Gary Gill, Mark Stephenson, Charles N. Alpers
Identifying resource manager information needs for the North Pacific Landscape Conservation Cooperative Identifying resource manager information needs for the North Pacific Landscape Conservation Cooperative
Landscape Conservation Cooperatives (LCCs) are a network of 22 public-private partnerships, defined by ecoregion, that share and provide science to ensure the sustainability of land, water, wildlife and cultural resources in North America. LLCs were established by the U.S. Department of Interior (DOI) in recognition that response to climate change must be coordinated on a landscape-level...
Authors
Andrea Woodward, Theresa Liedtke, Karen Jenni
Adaptive responses reveal contemporary and future ecotypes in a desert shrub Adaptive responses reveal contemporary and future ecotypes in a desert shrub
Interacting threats to ecosystem function, including climate change, wildfire, and invasive species necessitate native plant restoration in desert ecosystems. However, native plant restoration efforts often remain unguided by ecological genetic information. Given that many ecosystems are in flux from climate change, restoration plans need to account for both contemporary and future...
Authors
Bryce A. Richardson, Stanley G. Kitchen, Rosemary L. Pendleton, Burton K. Pendleton, Matthew J. Germino, Gerald E. Rehfeldt, Susan E. Meyer
Comparisons of genetic diversity in captive versus wild populations of the federally endangered Quino checkerspot butterfly (Euphydryas editha quino Behr; Lepidoptera: Nymphalidae) Comparisons of genetic diversity in captive versus wild populations of the federally endangered Quino checkerspot butterfly (Euphydryas editha quino Behr; Lepidoptera: Nymphalidae)
Captive populations can play a significant role in threatened and endangered species management. An important consideration when developing and managing captive populations, however, is the maintenance of genetic diversity to ensure that adequate variation exists to avoid the negative consequences of inbreeding. In this investigation, we compared genetic diversity patterns within captive...
Authors
Mark P. Miller, Gordon F. Pratt, Thomas D. Mullins, Susan M. Haig
Reconstructing disturbances and their biogeochemical consequences over multiple timescales Reconstructing disturbances and their biogeochemical consequences over multiple timescales
Ongoing changes in disturbance regimes are predicted to cause acute changes in ecosystem structure and function in the coming decades, but many aspects of these predictions are uncertain. A key challenge is to improve the predictability of postdisturbance biogeochemical trajectories at the ecosystem level. Ecosystem ecologists and paleoecologists have generated complementary data sets...
Authors
Kendra K. McLauchlan, Philip E. Higuera, Daniel G. Gavin, Steven S. Perakis, Michelle C. Mack, Heather Alexander, John Battles, Franco Biondi, Brian Buma, Daniele Colombaroli, Sara K. Enders, Daniel R. Engstrom, Feng Sheng Hu, Jennifer R. Marlon, John Marshall, Matt McGlone, Jesse L. Morris, Lucas E. Nave, Bryan Shuman, Erica A.H. Smithwick, Dunia H. Urrego, David A. Wardle, Christopher J. Williams, Joseph J. Williams
Geographic variability in elevation and topographic constraints on the distribution of native and nonnative trout in the Great Basin Geographic variability in elevation and topographic constraints on the distribution of native and nonnative trout in the Great Basin
Understanding local and geographic factors influencing species distributions is a prerequisite for conservation planning. Our objective in this study was to model local and geographic variability in elevations occupied by native and nonnative trout in the northwestern Great Basin, USA. To this end, we analyzed a large existing data set of trout presence (5,156 observations) to evaluate...
Authors
Dana R. Warren, Jason B. Dunham, David Hockman-Wert
A reference system for animal biometrics: application to the northern leopard frog A reference system for animal biometrics: application to the northern leopard frog
Reference systems and public databases are available for human biometrics, but to our knowledge nothing is available for animal biometrics. This is surprising because animals are not required to give their agreement to be in a database. This paper proposes a reference system and database for the northern leopard frog (Lithobates pipiens). Both are available for reproducible experiments...
Authors
D. Petrovska-Delacretaz, A. Edwards, J. Chiasson, G. Chollet, D. S. Pilliod
Elk monitoring in Lewis and Clark National Historical Park: 2008-2012 synthesis report Elk monitoring in Lewis and Clark National Historical Park: 2008-2012 synthesis report
Maintaining elk (Cervus elaphus roosevelti) herds that frequent Lewis and Clark National Historical Park (NHP) is central to the park’s purpose of preserving the historic, cultural, scenic, and natural resources associated with the winter encampment of the Lewis and Clark expedition. Elk were critically important to the Lewis and Clark expedition in providing food and hides that...
Authors
Paul C. Griffin, Kurt J. Jenkins, Carla Cole, Chris Clatterbuck, John Boetsch, Katherine Beirne
New host and distribution records of the leech Placobdella sophieae Oceguera-Figueroa et al., 2010 (Hirudinida: Glossiphoniidae) New host and distribution records of the leech Placobdella sophieae Oceguera-Figueroa et al., 2010 (Hirudinida: Glossiphoniidae)
Placobdella sophieae Oceguera-Figueroa et al., 2010 (Hirudinida: Glossiphoniidae) is reported from Oregon, California, and British Columbia for the first time. New hosts reported for P. sophieae include Taricha granulosa (rough-skinned newt), Rana pretiosa (Oregon spotted frog), and Anaxyrus boreas (western toad). Placobdella sophieae exhibits relatively low host specificity and all...
Authors
William E. Moser, Jay Bowerman, Peter Hovingh, Christopher A. Pearl, Alajandro Oceguera-Figueroa
Wintering ecology of adult North American ospreys Wintering ecology of adult North American ospreys
North American Ospreys (Pandion haliaetus) typically migrate long distances to their wintering grounds in the tropics. Beyond the general distribution of their wintering range (i.e., the Caribbean, South America, and Central America), very little is known about the wintering ecology of these birds. We used satellite telemetry to determine the duration of wintering period, to examine the
Authors
Brian E. Washburn, Mark S. Martell, Richard O. Bierregaard, Charles J. Henny, Brian S. Dorr, Thomas J. Olexa
Pedological and geological relationships with soil lichen and moss distribution in the eastern Mojave Desert, CA, USA Pedological and geological relationships with soil lichen and moss distribution in the eastern Mojave Desert, CA, USA
Biological soil crusts (biocrusts) are ubiquitous in drylands globally. Lichens and mosses are essential biocrust components and provide a variety of ecosystem services, making their conservation and management of interest. Accordingly, understanding what factors are correlated with their distribution is important to land managers. We hypothesized that cover would be related to geologic...
Authors
Jayne Belnap, David M. Miller, David R. Bedford, Susan L. Phillips