Publications
Filter Total Items: 2000
Interannual consistency of migration phenology is season- and breeding region-specific in North American Golden Eagles
Interannual consistency (an indicator of the strength of adjustments) in migration phenology of Golden Eagles (Aquila chrysaetos) in North America is most strongly associated with the breeding region, the season, and with late-season temperature on breeding and wintering grounds. Consistency was greatest in boreal spring migration and the breeding regions of eastern Canada. Using multi-year GPS tr
Authors
Laurie D Maynard, Jean-François Therrien, Jérôme Lemaître, Travis L. Booms, Tricia A. Miller, Todd E. Katzner, Scott Somershoe, Jeff Cooper, Robert Sargent, Nicolas Lecomte
Relocated beaver can increase water storage and decrease stream temperature in headwater streams
Many areas are experiencing increasing stream temperatures due to climate change, and some are experiencing reduced summer stream flows and water availability. Because dam building and pond formation by beaver can increase water storage, stream cooling, and riparian ecosystem resilience, beaver have been proposed as a potential climate adaption tool. Despite the large number of studies that have e
Authors
Benjamin J. Dittbrenner, Jason W. Schilling, Christian E. Torgersen, Joshua J. Lawler
Ten-year ecological responses to fuel treatments within semiarid Wyoming big sagebrush ecosystems
Sagebrush ecosystems of western North America are threatened by invasive annual grasses and wildfires that can remove fire-intolerant shrubs for decades. Fuel reduction treatments are used ostensibly to aid in fire suppression, conserve wildlife habitat, and restore historical fire regimes, but long-term ecological impacts of these treatments are not clear. In 2006, we initiated fuel reduction tre
Authors
David A. Pyke, Scott Shaff, Jeanne C. Chambers, Eugene W. Schupp, Beth A. Newingham, Margaret L Gray, Lisa M. Ellsworth
Warming temperatures affect meadow-wide nectar resources, with implications for plant-pollinator communities
Nectar production may be a point of sensitivity that can help link primary and secondary trophic responses to climate shifts, and is therefore important to our understanding of ecosystem responses. We evaluated the nectar response of two widespread native forbs, Balsamorhiza sagittata and Eriogonum umbellatum, to experimental warming in a high-elevation sagebrush meadow in the Teton Range, WY, USA
Authors
Audrey L. McCombs, Diane Debinski, Keith Reinhardt, Matthew Germino, Petrutza Caragea
Relationship of greater sage-grouse to natural and assisted recovery of key vegetation types following wildfire: Insights from scat
Megafires are creating severe conservation problems worldwide for wildlife that have obligate dependencies on plant species that are foundational but fire-intolerant. Wildfire-induced loss of native perennials and increases in exotic annual grasses threaten greater sage-grouse (GRSG, Centrocercus urophasianus) in its sagebrush steppe habitat in western North America. Post-fire restoration using he
Authors
Matthew Germino, Christopher R. Anthony, Chad Raymond Kluender, Ethan A. Ellsworth, Ann M. Moser, Cara Applestein, Matthew Fisk
Statistical consideration of nonrandom treatment applications reveal region-wide benefits of widespread post-fire restoration action
Accurate predictions of ecological restoration outcomes are needed across the increasingly large landscapes requiring treatment following disturbances. However, observational studies often fail to account for nonrandom treatment application, which can result in invalid inference. Examining a spatiotemporally extensive management treatment-- post-fire seeding of declining sagebrush shrubs across th
Authors
Allison B. Simler-Williamson, Matthew Germino
Assessing runoff and erosion on woodland-encroached sagebrush steppe using the Rangeland Hydrology and Erosion Model
The transition of sagebrush-dominated (Artemisia spp.) shrublands to pinyon (Pinus spp.) and juniper (Juniperus spp.) woodlands markedly alters resource-conserving vegetation structure typical of these landscapes. Land managers and scientists in the western United States need knowledge and predictive tools for assessment and effective targeting of tree-removal treatments to conserve or restore sag
Authors
C. Jason Williams, Frederick B. Pierson, Osama Z. Al-Hamdan, S. Kossi Nouwakpo, Justin C. Johnson, Viktor O. Polyakov, Patrick R. Kormos, Scott Shaff, Kenneth E. Spaeth
Resist, accept, and direct responses to biological invasions: A social–ecological perspective
Biological invasions represent an important and unique case of ecological transformation that can strongly influence species and entire ecosystems. Challenges in managing invasions arise on multiple fronts, ranging from diverse and often divergent values associated with native and introduced species, logistical constraints, and transformation via other change agents (e.g., climate and land-use cha
Authors
Jason B. Dunham, Joseph R. Benjamin, David J. Lawrence, Katherine Clifford
A haploid pseudo-chromosome genome assembly for a keystone sagebrush species of western North American rangelands
Increased ecological disturbances, species invasions, and climate change are creating severe conservation problems for several plant species that are widespread and foundational. Understanding the genetic diversity of these species and how it relates to adaptation to these stressors are necessary for guiding conservation and restoration efforts. This need is particularly acute for big sagebrush (A
Authors
Anthony E. Melton, Andrew W. Child, Richard S. Beard, Carlos Dave C. Dumaguit, Jennifer S. Forbey, Matthew Germino, Marie-Anne de Graaff, Andrew Kliskey, Ilia J. Leitch, Peggy Martinez, Stephen J. Novak, Jaume Pellicer, Bryce A. Richardson, Desiree Self, Marcelo D. Serpe, Sven Buerki
How do accuracy and model agreement vary with versioning, scale, and landscape heterogeneity for satellite-derived vegetation maps in sagebrush steppe?
Maps of the distribution and abundance of dominant plants derived from satellite data are essential for ecological research and management, particularly in the vast semiarid shrub-steppe. Appropriate application of these maps requires an understanding of model accuracy and precision, and how it might vary across space, time, and different vegetation types. For a 113 k Ha burn area, we compared mod
Authors
Cara Applestein, Matthew J. Germino
Dammed water quality — Longitudinal stream responses below beaver ponds in the Umpqua River Basin, Oregon
Beaver-related restoration (BRR) has gained popularity as a means of improving stream ecosystems, but the effects are not fully understood. Studies of dissolved oxygen (DO) and water temperature, key water quality metrics for salmonids, have demonstrated improved conditions in some cases, but warming and decreased DO have been more commonly reported in meta-analyses. These results point to the con
Authors
John R. Stevenson, Jason B. Dunham, Steve M. Wondzell, Jimmy D. Taylor
Migration of first-year steppe eagles (Aquila nipalensis) from northern Kazakhstan and implications for conservation
Extensive anthropogenic alteration of steppe ecosystems throughout Eurasia leaves central Asia with some of the world’s last remaining large expanses of grassland habitat. Steppe eagles (Aquila nipalensis) are globally endangered breed primarily in these steppe ecosystems. We evaluated migratory movements of first year steppe eagles hatched in northern Kazakhstan, to understand their migration and
Authors
Todd E. Katzner, R. Efrat, A. E. Bragin, Y. Lehnardt, E. A. Bragin, N. Sapir