Publications
Filter Total Items: 2066
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
Mount Rainier National Park Mount Rainier National Park
Natural Resource Condition Assessments (NRCAs) evaluate current conditions for a subset of natural resources and resource indicators in national parks. NRCAs also report on trends in resource condition (when possible), identify critical data gaps, and characterize a general level of confidence for study findings. The resources and indicators emphasized in a given project depend on the...
Authors
Robert Hoffman, Andrea Woodward, Patricia K. Haggerty, Kurt J. Jenkins, Paul C. Griffin, M. J. Adams, Joan Hagar, Tonnie Cummings, Dan Duriscoe, Karen Kopper, Jon Riedel, Barbara Samora, Lelaina Marin, Guillaume S. Mauger, Karen Bumbaco, Jeremy S. Littell
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
Interactions between a group of Golden Eagles and a herd of North American elk Interactions between a group of Golden Eagles and a herd of North American elk
Raptors are generally considered solitary predators (Schoener 1969), but occasionally they interact socially (Brown and Amadon 1968). Certain raptor species (e.g., Swallow-tailed Kites [Elanoides forficatus] and Swainson's Hawks [Buteo swainsoni]) concentrate in aggregations in response to localized, abundant food sources (Ellis et al. 1993). Many raptor species engage in group hunting...
Authors
Matt P. O’Connell, Michael N. Kochert
Outplanting Wyoming big sagebrush following wldfire: stock performance and economics Outplanting Wyoming big sagebrush following wldfire: stock performance and economics
Finding ecologically and economically effective ways to establish matrix species is often critical for restoration success. Wyoming big sagebrush (Artemisia tridentata subsp. wyomingensis) historically dominated large areas of western North America, but has been extirpated from many areas by large wildfires; its re-establishment in these areas often requires active management. We...
Authors
Eva Dettweiler-Robinson, Jonathan D. Bakker, James R. Evans, Heidi Newsome, G. Matt Davies, Troy A. Wirth, David A. Pyke, Richard T. Easterly, Debra Salstrom, Peter W. Dunwiddle
Raptor nesting near oil and gas development: an overview of key findings and implications for management based on four reports by HawkWatch International Raptor nesting near oil and gas development: an overview of key findings and implications for management based on four reports by HawkWatch International
The project was undertaken because of a paucity of information about the possible effects of OG operations and resource management on nesting raptors. BLM raptor management has included stipulations that restricted human activity near raptor nests during the raptor nesting season. The BLM and the Department of Energy (DOE), which provided financial support for the study, seek information
Authors
Mark R. Fuller