Publications
Filter Total Items: 2066
Tough places and safe spaces: Can refuges save salmon from a warming climate? Tough places and safe spaces: Can refuges save salmon from a warming climate?
The importance of thermal refuges in a rapidly warming world is particularly evident for migratory species, where individuals encounter a wide range of conditions throughout their lives. In this study, we used a spatially explicit, individual-based simulation model to evaluate the buffering potential of cold-water thermal refuges for anadromous salmon and trout (Oncorhynchus spp.)...
Authors
Marcia N. Snyder, Nathan H. Schumaker, Jason B. Dunham, Joseph L. Ebersole, Mathew L Keefer, Jonathan Halama, Randy L Comeleo, Peter Leinenbach, Allen Brookes, Ben Cope, Jennifer Wu, John Palmer
Passage of adult coho salmon (Oncorhynchus kisutch) over Lake Creek Falls, Oregon, 2019 Passage of adult coho salmon (Oncorhynchus kisutch) over Lake Creek Falls, Oregon, 2019
Across the Pacific Northwest, there are many examples of artificial structures created to allow passage of upstream-migrating salmon over natural barriers. We studied upstream passage across three structures installed in 1989 to allow passage of salmon over Lake Creek Falls, a series of three natural waterfalls at the outlet of Triangle Lake on Lake Creek, in the central Oregon Coast...
Authors
Reed B. Fischer, Jason B. Dunham, Nicholas Scheidt, Amy C. Hansen, Emily D. Heaston
Plant community trajectories following livestock exclusion for conservation vary and hinge on initial invasion and soil-biocrust conditions in shrub steppe Plant community trajectories following livestock exclusion for conservation vary and hinge on initial invasion and soil-biocrust conditions in shrub steppe
Adjustments or complete withdrawal of livestock grazing are among the most common conservation actions in semiarid uplands, but outcomes can vary considerably with ecological context. Invasion by exotic annual grasses and the excessive wildfire they promote are increasing threats to semiarid shrub-steppe, and plant-community response to livestock exclusion in these areas may be...
Authors
Matthew J. Germino, Chad Raymond Kluender, Christopher R. Anthony
Long-billed Curlew Long-billed Curlew
No abstract available.
Authors
Elise Elliott-Smith, Susan M Haig
Barred Owl history in Oregon Barred Owl history in Oregon
No abstract available.
Authors
David Wiens
Black Oystercatchers Black Oystercatchers
No abstract available.
Authors
Elise Elliott-Smith, Joe Liebezeit
Contaminant studies in Oregon Contaminant studies in Oregon
No abstract available.
Authors
Charles J. Henny
Limited rigor in studies of raptor mortality and mitigation at wind power facilities Limited rigor in studies of raptor mortality and mitigation at wind power facilities
Wind power is an expanding source of renewable energy. However, there are ecological challenges related to wind energy generation, including collisions of wildlife with turbines. Lack of rigor, and variation in study design, together limit efforts to understand the broad-scale effects of wind power infrastructure on wildlife populations. It is not clear, however, whether these types of...
Authors
Tara Conkling, Christopher J. W. McClure, Sandra Cuadros, S. R. Loss, Todd E. Katzner
Level and pattern of overstory retention shape the abundance and long-term dynamics of natural and created snags Level and pattern of overstory retention shape the abundance and long-term dynamics of natural and created snags
Standing dead trees, or snags, serve myriad functions in natural forests, but are often scarce in forests managed for timber production. Variable retention (VR), the retention of live and dead trees through harvest, has been adopted globally as a less intensive form of regeneration harvest. In this study, we explore how two key elements of VR systems — level (amount) and spatial pattern...
Authors
Charles B. Halpern, Allison K. Rossman, Joan Hagar
Demographic and environmental correlates of home ranges and long-distance movements of Mohave ground squirrels Demographic and environmental correlates of home ranges and long-distance movements of Mohave ground squirrels
Space use by mammals can differ among age-classes, sexes, or seasons, and these processes are recognized as adaptive behavioral strategies. Semi-fossorial ground squirrels, in particular, have shown age- and sex-specific patterns in their aboveground movement behaviors. We studied space use of Mohave ground squirrels (Xerospermophilus mohavensis) at the Freeman Gulch study site in the...
Authors
Sharon A. Poessel, Philip Leitner, Richard D. Inman, Todd Esque, Todd E. Katzner
Getting ahead of flash drought: From early warning to early action Getting ahead of flash drought: From early warning to early action
Flash droughts, characterized by their unusually rapid intensification, have garnered increasing attention within the weather, climate, agriculture, and ecological communities in recent years due to their large environmental and socioeconomic impacts. Because flash droughts intensify quickly, they require different early warning capabilities and management approaches than are typically...
Authors
Jason Otkin, Molly Woloszyn, Hailan Wang, Mark Svoboda, Marina Skumanich, Roger Pulwarty, Joel Lisonbee, Andrew Hoell, Mike Hobbins, Tonya Haigh, Amanda E. Cravens