Publications
Filter Total Items: 2066
Rivers are social–ecological systems: Time to integrate human dimensions into riverscape ecology and management Rivers are social–ecological systems: Time to integrate human dimensions into riverscape ecology and management
Incorporation of concepts from landscape ecology into understanding and managing riverine ecosystems has become widely known as riverscape ecology. Riverscape ecology emphasizes interactions among processes at different scales and their consequences for valued ecosystem components, such as riverine fishes. Past studies have focused strongly on understanding the ecological processes in...
Authors
Jason B. Dunham, Paul L. Angermeier, Shelley D. Crausbay, Amanda E. Cravens, Hannah Gosnell, Jamie McEvoy, Max A. Moritz, Nejem Raheem, Todd Sanford
Monitoring stream temperatures—A guide for non-specialists Monitoring stream temperatures—A guide for non-specialists
Executive Summary Water temperature influences most physical and biological processes in streams, and along with streamflows is a major driver of ecosystem processes. Collecting data to measure water temperature is therefore imperative, and relatively straightforward. Several protocols exist for collecting stream temperature data, but these are frequently directed towards specialists...
Authors
Michael P. Heck, Luke D. Schultz, David Hockman-Wert, Eric C. Dinger, Jason B. Dunham
Evaluating autonomous acoustic surveying techniques for rails in tidal marshes Evaluating autonomous acoustic surveying techniques for rails in tidal marshes
There is a growing interest toward the use of autonomous recording units (ARUs) for acoustic surveying of secretive marsh bird populations. However, there is little information on how ARUs compare to human surveyors or how best to use ARU data that can be collected continuously throughout the day. We used ARUs to conduct 2 acoustic surveys for king (Rallus elegans) and clapper rails (R...
Authors
Lydia L. Stiffler, James T. Anderson, Todd E. Katzner
Flight response to spatial and temporal correlates informs risk from wind turbines to the California Condor Flight response to spatial and temporal correlates informs risk from wind turbines to the California Condor
Wind power is a fast-growing energy resource, but wind turbines can kill volant wildlife, and the flight behavior of obligate soaring birds can place them at risk of collision with these structures. We analyzed altitudinal data from GPS telemetry of critically endangered California Condors (Gymnogyps californianus) to assess the circumstances under which their flight behavior may place...
Authors
Sharon A. Poessel, Joseph Brandt, Laura C. Mendenhall, Melissa A. Braham, Michael J. Lanzone, Andrew J. McGann, Todd E. Katzner
New insights into the phylogenetics and population structure of the prairie falcon (Falco mexicanus) New insights into the phylogenetics and population structure of the prairie falcon (Falco mexicanus)
Background Management requires a robust understanding of between- and within-species genetic variability, however such data are still lacking in many species. For example, although multiple population genetics studies of the peregrine falcon (Falco peregrinus) have been conducted, no similar studies have been done of the closely-related prairie falcon (F. mexicanus) and it is unclear how...
Authors
Jacqueline M. Doyle, Douglas A. Bell, Peter H. Bloom, Gavin Emmons, Amy Fesnock-Parker, Todd E. Katzner, Larry LePre, Kolbe Leonard, Phillip SanMiguel, Rick Westerman, J. Andrew DeWoody
Movements and landscape use of Eastern Imperial Eagles Aquila heliaca in Central Asia Movements and landscape use of Eastern Imperial Eagles Aquila heliaca in Central Asia
Capsule: We describe ecological factors associated with movements of a globally declining raptor species, the Eastern Imperial Eagle Aquila heliaca. Aims: To describe the movements, habitat associations and resource selection of Eastern Imperial Eagles marked in Central Asia. Methods: We used global positioning system (GPS) data sent via satellite telemetry devices deployed on Eastern...
Authors
Sharon A. Poessel, Evgeny A. Bragin, Peter B. Sharpe, David K. Garcelon, Kordian Bartoszuk, Todd E. Katzner
Rising synchrony controls western North American ecosystems Rising synchrony controls western North American ecosystems
Along the western margin of North America, the winter expression of the North Pacific High (NPH) strongly influences interannual variability in coastal upwelling, storm track position, precipitation, and river discharge. Coherence among these factors induces covariance among physical and biological processes across adjacent marine and terrestrial ecosystems. Here, we show that over the...
Authors
Bryan A. Black, Peter van der Sleen, Emanuele Di Lorenzo, Daniel Griffin, William J. Sydeman, Jason B. Dunham, Ryan R. Rykaczewski, Marisol Garcia-Reyes, Mohammad Safeeq, Ivan Arismendi, Steven J. Bograd
Gene flow connects coastal populations of a habitat specialist, the Clapper Rail Rallus crepitans Gene flow connects coastal populations of a habitat specialist, the Clapper Rail Rallus crepitans
Examining population genetic structure can reveal patterns of reproductive isolation or population mixing and inform conservation management. Some avian species are predicted to exhibit minimal genetic differentiation among populations as a result of the species high mobility, with habitat specialists tending to show greater fine‐scale genetic structure. To explore the relationship...
Authors
Stephanie S. Coster, Amy B. Welsh, Gary R. Costanzo, Sergio R. Harding, James T. Anderson, Todd E. Katzner
Modeling habitat for Marbled Murrelets on the Siuslaw National Forest, Oregon, using lidar data Modeling habitat for Marbled Murrelets on the Siuslaw National Forest, Oregon, using lidar data
Habitat models using lidar-derived variables that quantify fine-scale variation in vegetation structure can improve the accuracy of occupancy estimates for canopy-dwelling species over models that use variables derived from other remote sensing techniques. However, the ability of models developed at such a fine spatial scale to maintain accuracy at regional or larger spatial scales has...
Authors
Joan C. Hagar, Ramiro Aragon, Patricia Haggerty, Jeff P. Hollenbeck
Functional group, biomass, and climate change effects on ecological drought in semiarid grasslands Functional group, biomass, and climate change effects on ecological drought in semiarid grasslands
Water relations in plant communities are influenced both by contrasting functional groups (grasses, shrubs) and by climate change via complex effects on interception, uptake and transpiration. We modelled the effects of functional group replacement and biomass increase, both of which can be outcomes of invasion and vegetation management, and climate change on ecological drought (soil...
Authors
Scott D. Wilson, Daniel R. Schlaepfer, John B. Bradford, William K. Lauenroth, Michael C. Duniway, Sonia A. Hall, Khishigbayar Jamiyansharav, Gensuo Jia, Ariuntsetseg Lkhagva, Seth M. Munson, David A. Pyke, Britta Tietjen
The Chief Joseph Hatchery Program spring Chinook 2018 annual report The Chief Joseph Hatchery Program spring Chinook 2018 annual report
No abstract available.
Authors
Andrea Pearl, Matthew Laramie, Casey Baldwin, John Rohrback, Brian Dietz, Matt McDaniel
Intraspecific niche models for ponderosa pine (Pinus ponderosa) suggest potential variability in population-level response to climate change Intraspecific niche models for ponderosa pine (Pinus ponderosa) suggest potential variability in population-level response to climate change
Unique responses to climate change can occur across intraspecific levels, resulting in individualistic adaptation or movement patterns among populations within a given species. Thus, the need to model potential responses among genetically distinct populations within a species is increasingly recognized. However, predictive models of future distributions are regularly fit at the species...
Authors
Kaitlin C. Maguire, Douglas J. Shinneman, Kevin M. Potter, Valerie D. Hipkins