Publications
Filter Total Items: 2070
Predicting invasion in grassland ecosystems: Is exotic dominance the real embarrassment of richness? Predicting invasion in grassland ecosystems: Is exotic dominance the real embarrassment of richness?
Invasions have increased the size of regional species pools, but are typically assumed to reduce native diversity. However, global-scale tests of this assumption have been elusive because of the focus on exotic species richness, rather than relative abundance. This is problematic because low invader richness can indicate invasion resistance by the native community or, alternatively...
Authors
Eric Seabloom, Elizabeth Borer, Yvonne Buckley, Elsa E. Cleland, Kendi Davies, Jennifer Firn, W. Stanley Harpole, Yann Hautier, Eric M. Lind, Andrew MacDougall, John L. Orrock, Suzanne M. Prober, Peter Adler, Juan Alberti, T. Michael Anderson, Jonathan D. Bakker, Lori A. Biederman, Dana Blumenthal, Cynthia S. Brown, Lars A. Brudvig, Maria Caldeira, Cheng-Jin Chu, Michael J. Crawley, Pedro Daleo, Ellen Ingman Damschen, Carla M. D'Antonio, Nicole M. DeCrappeo, Chris R. Dickman, Guozhen Du, Philip A. Fay, Paul Frater, Daniel S. Gruner, Nicole Hagenah, Andrew Hector, Aveliina Helm, Helmut Hillebrand, Kirsten S. Hofmockel, Hope C. Humphries, Oscar Iribarne, Virginia L. Jin, Adam Kay, Kevin P. Kirkman, Julia A. Klein, Johannes M.H. Knops, Kimberly J. La Pierre, Laura M. Ladwig, G. John, Andrew D.B. Leakey, Qi Li, Wei Li, Rebecca McCulley, Brett Melbourne, E. Charles, Joslin L. Moore, John Morgan, Brent Mortensen, Lydia R. O’Halloran, Meelis Pärtel, Jesus Pascual, David A. Pyke, Anita C. Risch, Roberto Salguero-Gomez, Mahesh Sankaran, Martin Schuetz, Anna Simonsen, Melinda Smith, Carly Stevens, Lauren Sullivan, Glenda M. Wardle, Elizabeth M. Wolkovich, Peter D. Wragg, Justin Wright, Louie Yang
Genetic structure, diversity and subspecies status of Gull-billed Terns (Gelochelidon nilotica) from the United States Genetic structure, diversity and subspecies status of Gull-billed Terns (Gelochelidon nilotica) from the United States
Gull-billed Terns (Gelochelidon nilotica) are among the most widespread, yet scarce, Charadriiformes in the world. Two subspecies are recognized in the United States: G. n. aranea breeds along the U.S. Atlantic and Gulf coasts and G. n. vanrossemi breeds in the Salton Sea and San Diego Bay of California. Conservation concerns exist for the species due to its low abundance in the United...
Authors
Mark P. Miller, Thomas D. Mullins, Susan M. Haig
Monitoring of livestock grazing effects on Bureau of Land Management land Monitoring of livestock grazing effects on Bureau of Land Management land
Public land management agencies, such as the Bureau of Land Management (BLM), are charged with managing rangelands throughout the western United States for multiple uses, such as livestock grazing and conservation of sensitive species and their habitats. Monitoring of condition and trends of these rangelands, particularly with respect to effects of livestock grazing, provides critical...
Authors
Kari E. Veblen, David A. Pyke, Cameron L. Aldridge, Michael L. Casazza, Timothy J. Assal, Melissa A. Farinha
A hybrid double-observer sightability model for aerial surveys A hybrid double-observer sightability model for aerial surveys
Raw counts from aerial surveys make no correction for undetected animals and provide no estimate of precision with which to judge the utility of the counts. Sightability modeling and double-observer (DO) modeling are 2 commonly used approaches to account for detection bias and to estimate precision in aerial surveys. We developed a hybrid DO sightability model (model MH) that uses the...
Authors
Paul C. Griffin, Bruce C. Lubow, Kurt J. Jenkins, David J. Vales, Barbara J. Moeller, Mason Reid, Patricia J. Happe, Scott M. Mccorquodale, Michelle J. Tirhi, Jim P. Schaberi, Katherine Beirne
Diel horizontal migration in streams: juvenile fish exploit spatial heterogeneity in thermal and trophic resources Diel horizontal migration in streams: juvenile fish exploit spatial heterogeneity in thermal and trophic resources
Vertical heterogeneity in the physical characteristics of lakes and oceans is ecologically salient and exploited by a wide range of taxa through diel vertical migration to enhance their growth and survival. Whether analogous behaviors exploit horizontal habitat heterogeneity in streams is largely unknown. We investigated fish movement behavior at daily timescales to explore how...
Authors
Jonathan B. Armstrong, Daniel E. Schindler, Casey P. Ruff, Gabriel T. Brooks, Kale E. Bentley, Christian E. Torgersen
SSR_pipeline: a bioinformatic infrastructure for identifying microsatellites from paired-end Illumina high-throughput DNA sequencing data SSR_pipeline: a bioinformatic infrastructure for identifying microsatellites from paired-end Illumina high-throughput DNA sequencing data
SSR_pipeline is a flexible set of programs designed to efficiently identify simple sequence repeats (e.g., microsatellites) from paired-end high-throughput Illumina DNA sequencing data. The program suite contains 3 analysis modules along with a fourth control module that can automate analyses of large volumes of data. The modules are used to 1) identify the subset of paired-end sequences...
Authors
Mark P. Miller, Brian J. Knaus, Thomas D. Mullins, Susan M. Haig
Probabilistic accounting of uncertainty in forecasts of species distributions under climate change Probabilistic accounting of uncertainty in forecasts of species distributions under climate change
Forecasts of species distributions under future climates are inherently uncertain, but there have been few attempts to describe this uncertainty comprehensively in a probabilistic manner. We developed a Monte Carlo approach that accounts for uncertainty within generalized linear regression models (parameter uncertainty and residual error), uncertainty among competing models (model...
Authors
Seth J. Wenger, Nicholas A. Som, Daniel C. Dauwalter, Daniel J. Isaak, Helen M. Neville, Charles H. Luce, Jason B. Dunham, Michael K. Young, Kurt D. Fausch, Bruce E. Rieman
Evaluating the effectiveness of an ultrasonic acoustic deterrent for reducing bat fatalities at wind turbines Evaluating the effectiveness of an ultrasonic acoustic deterrent for reducing bat fatalities at wind turbines
Large numbers of bats are killed by wind turbines worldwide and minimizing fatalities is critically important to bat conservation and acceptance of wind energy development. We implemented a 2-year study testing the effectiveness of an ultrasonic acoustic deterrent for reducing bat fatalities at a wind energy facility in Pennsylvania. We randomly selected control and treatment turbines...
Authors
Edward B. Arnett, Cris D. Hein, Michael R. Schirmacher, Manuela M.P. Huso, Joseph M. Szewczak
Decomposition and nitrogen dynamics of 15N-labeled leaf, root, and twig litter in temperate coniferous forests Decomposition and nitrogen dynamics of 15N-labeled leaf, root, and twig litter in temperate coniferous forests
Litter nutrient dynamics contribute significantly to biogeochemical cycling in forest ecosystems. We examined how site environment and initial substrate quality influence decomposition and nitrogen (N) dynamics of multiple litter types. A 2.5-year decomposition study was installed in the Oregon Coast Range and West Cascades using 15N-labeled litter from Acer macrophyllum, Picea...
Authors
Tiff L. van Huysen, Mark E. Harmon, Steven S. Perakis, Hua Chen
Factors influencing detection of eDNA from a stream-dwelling amphibian Factors influencing detection of eDNA from a stream-dwelling amphibian
Environmental DNA (eDNA) methods for detecting and estimating abundance of aquatic species are emerging rapidly, but little is known about how processes such as secretion rate, environmental degradation, and time since colonization or extirpation from a given site affect eDNA measurements. Using stream-dwelling salamanders and quantitative PCR (qPCR) analysis, we conducted three...
Authors
David S. Pilliod, Caren S. Goldberg, Robert S. Arkle, Lisette P. Waits
Greater Sage-Grouse National Research Strategy Greater Sage-Grouse National Research Strategy
The condition of the sagebrush ecosystem has been declining in the Western United States, and greater sage-grouse (Centrocercus urophasianus), a sagebrush-obligate species, has experienced concurrent decreases in distribution and population numbers. This has prompted substantial research and management over the past two decades to improve the understanding of sage-grouse and its habitats...
Authors
Steven E. Hanser, Daniel J. Manier
Importance of the National Petroleum Reserve-Alaska for aquatic birds Importance of the National Petroleum Reserve-Alaska for aquatic birds
We used data from aerial surveys (1992–2010) of >100,000 km2 and ground surveys (1998–2004) of >150 km2 to estimate the density and abundance of birds on the North Slope of Alaska (U.S.A.). In the ground surveys, we used double sampling to estimate detection ratios. We used the aerial survey data to compare densities of birds and Arctic fox (Vulpes lagopus), the major nest predator of...
Authors
Jonathan Bart, Robert M. Platte, Brad Andres, Stephen Brown, James A. Johnson, William Larned