Publications
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Associations between forest fragmentation patterns and geneticstructure in Pfrimer’s Parakeet (Pyrrhura pfrimeri), an endangered endemic to central Brazil’s dry forests Associations between forest fragmentation patterns and geneticstructure in Pfrimer’s Parakeet (Pyrrhura pfrimeri), an endangered endemic to central Brazil’s dry forests
When habitat becomes fragmented, populations of species may become increasingly isolated. In the absence of habitat corridors, genetic structure may develop and populations risk reductions in genetic diversity from increased genetic drift and inbreeding. Deforestation of the Cerrado biome of Brazil, particularly of the dry forests within the Parana˜ River Basin, has incrementally...
Authors
Susan M. Haig, Leonard F. Miller, Carlos Bianchi, Thomas D. Mullins
Elevated CO2 did not mitigate the effect of a short-term drought on biological soil crusts Elevated CO2 did not mitigate the effect of a short-term drought on biological soil crusts
Biological soil crusts (biocrusts) are critical components of arid and semi-arid ecosystems that contribute significantly to carbon (C) and nitrogen (N) fixation, water retention, soil stability, and seedling recruitment. While dry-land ecosystems face a number of environmental changes, our understanding of how biocrusts may respond to such perturbation remains notably poor. To determine...
Authors
Timothy M. Wertin, Susan L. Phillips, Sasha C. Reed, Jayne Belnap
Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades
Large-scale commercial thinning of young forests in the Pacific Northwest is currently promoted on public lands to accelerate the development of late-seral forest structure for the benefit of wildlife species such as northern spotted owls (Strix occidentalis caurina) and their prey, including the northern flying squirrel (Glaucomys sabrinus). Attempts to measure the impact of commercial...
Authors
Tom Manning, Joan C. Hagar, Brenda C. McComb
Effects of multiple interacting disturbances and salvage logging on forest carbon stocks Effects of multiple interacting disturbances and salvage logging on forest carbon stocks
Climate change is anticipated to increase the frequency of disturbances, potentially impacting carbon stocks in terrestrial ecosystems. However, little is known about the implications of either multiple disturbances or post-disturbance forest management activities on ecosystem carbon stocks. This study quantified how forest carbon stocks responded to stand-replacing blowdown and wildfire...
Authors
J.B. Bradford, S. Fraver, A.M. Milo, A.W. D’Amato, B. Palik, D.J. Shinneman
A riverscape perspective of Pacific salmonids and aquatic habitats prior to large-scale dam removal in the Elwha River, Washington, USA A riverscape perspective of Pacific salmonids and aquatic habitats prior to large-scale dam removal in the Elwha River, Washington, USA
Dam removal has been increasingly proposed as a river restoration technique. In 2011, two large hydroelectric dams will be removed from Washington State’s Elwha River. Ten anadromous fish populations are expected to recolonise historical habitats after dam removal. A key to understanding watershed recolonisation is the collection of spatially continuous information on fish and aquatic...
Authors
S.J. Brenkman, J.J. Duda, C.E. Torgersen, E. Welty, G.R. Pess, R. Peters, M.L. McHenry
Genetic applications in avian conservation Genetic applications in avian conservation
A fundamental need in conserving species and their habitats is defining distinct entities that range from individuals to species to ecosystems and beyond (Table 1; Ryder 1986, Moritz 1994, Mayden and Wood 1995, Haig and Avise 1996, Hazevoet 1996, Palumbi and Cipriano 1998, Hebert et al. 2004, Mace 2004, Wheeler et al. 2004, Armstrong and Ball 2005, Baker 2008, Ellis et al. 2010, Winker...
Authors
Susan M. Haig, Whitcomb M. Bronaugh, Rachel S. Crowhurst, Jesse D'Elia, Collin A. Eagles-Smith, Clinton W. Epps, Brian Knaus, Mark P. Miller, Michael L. Moses, Sara Oyler-McCance, W. Douglas Robinson, Brian Sidlauskas
Migration patterns, use of stopover areas, and austral summer movements of Swainson's hawks Migration patterns, use of stopover areas, and austral summer movements of Swainson's hawks
From 1995 to 1998, we tracked movements of adult Swainson's Hawks (Buteo swainsoni), using satellite telemetry to characterize migration, important stopover areas, and movements in the austral summer. We tagged 46 hawks from July to September on their nesting grounds in seven U.S. states and two Canadian provinces. Swainson's Hawks followed three basic routes south on a broad front...
Authors
Michael N. Kochert, Mark R. Fuller, Linda S. Schueck, Laura Bond, Marc J. Bechard, Brian Woodbridge, Geoff L. Holroyd, Mark S. Martell, Ursula Banasch
Role of climate and invasive species in structuring trout distributions in the interior Columbia River Basin, USA Role of climate and invasive species in structuring trout distributions in the interior Columbia River Basin, USA
Recent and projected climate warming trends have prompted interest in impacts on coldwater fishes. We examined the role of climate (temperature and flow regime) relative to geomorphology and land use in determining the observed distributions of three trout species in the interior Columbia River Basin, USA. We considered two native species, cutthroat trout (Oncorhynchus clarkii) and bull...
Authors
Seth J. Wenger, Daniel J. Isaak, Jason B. Dunham, Kurt D. Fausch, Charles H. Luce, Helen M. Neville, Bruce E. Rieman, Michael K. Young, David E. Nagel, Dona L. Horan, Gwynne L. Chandler
Vegetation recovery after fire in the Klamath-Siskiyou region, southern Oregon Vegetation recovery after fire in the Klamath-Siskiyou region, southern Oregon
In July 2002, lightning strikes started five forest fires that merged into one massive wildfire in the Klamath-Siskiyou Ecoregion of southern Oregon. Aided by drought, severe weather conditions, dry fuels, and steep topography, the fire grew to more than 200,000 hectares of mostly public forest land. Known as the Biscuit Fire, it was Oregon's largest forest fire in more than 130 years...
Authors
David Hibbs, Ruth Jacobs
Wind energy and wildlife research at the Forest and Rangeland Ecosystem Science Center Wind energy and wildlife research at the Forest and Rangeland Ecosystem Science Center
The United States has embarked on a goal to increase electricity generation from clean, renewable sources by 2012. Towards this end, wind energy is emerging as a widely distributed form of renewable energy throughout the country. The national goal is for energy from wind to supply 20 percent of the country's electricity by 2030. As with many land uses, trade-offs exist between costs and...
Authors
Susan L. Phillips
Productivity is a poor predictor of plant species richness Productivity is a poor predictor of plant species richness
For more than 30 years, the relationship between net primary productivity and species richness has generated intense debate in ecology about the processes regulating local diversity. The original view, which is still widely accepted, holds that the relationship is hump-shaped, with richness first rising and then declining with increasing productivity. Although recent meta-analyses...
Authors
Peter B. Adler, Eric W. Seabloom, Elizabeth T. Borer, Helmut Hillebrand, Yann Hautier, Andy Hector, W. Stanley Harpole, Lydia R. O’Halloran, James B. Grace, T. Michael Anderson, Jonathan D. Bakker, Lori A. Biederman, Cynthia S. Brown, Yvonne M. Buckley, Laura B. Calabrese, Cheng-Jin Chu, Elsa E. Cleland, Scott L. Collins, Kathryn L. Cottingham, Michael J. Crawley, Ellen Ingman Damschen, Kendi F. Davies, Nicole M. DeCrappeo, Philip A. Fay, Jennifer Firn, Paul Frater, Eve I. Gasarch, Daneil S. Gruner, Nicole Hagenah, Janneke Hille Ris Lambers, Hope Humphries, Virginia L. Jin, Adam D. Kay, Kevin P. Kirkman, Julia A. Klein, Johannes M.H. Knops, Kimberly J. La Pierre, John G. Lambrinos, Wei Li, Andrew S. MacDougall, Rebecca L. McCulley, Brett A. Melbourne, Charles E. Mitchell, Joslin L. Moore, John W. Morgan, Brent Mortensen, John L. Orrock, Suzanne M. Prober, David A. Pyke, Anita C. Risch, Martin Schuetz, Melinda D. Smith, Carly J. Stevens, Lauren L. Sullivan, Gang Wang, Peter D. Wragg, Justin P. Wright, Louie H. Yang