Forest and Rangeland Ecosystem Science Center

Publications

Filter Total Items: 1,754
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Year Published: 2020

Evaluating contributions of recent tracking-based animal movement ecology to conservation management

The use of animal-born sensors for location-based tracking and bio-logging in terrestrial systems has expanded dramatically in the past 10 years. This rapid expansion has generated new data on how animals interact with and respond to variation in their environment, resulting in important ecological, physiological, and evolutionary insights....

Katzner, Todd E.; Arlettaz, Raphaël

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Year Published: 2020

The lead (Pb) lining of agriculture‐related subsidies: enhanced Golden Eagle growth rates tempered by Pb exposure

Supplementary food resources (e.g., subsidies) associated with agriculture can benefit wildlife species, increasing predictability and availability of food. Avian scavengers including raptors often utilize subsidies associated with both recreational hunting and pest shooting on agricultural lands. However, these subsidies can contain lead (Pb)...

Herring, Garth; Eagles-Smith, Collin; Buck, Jeremy A.; Shiel, Alyssa E.; Vennum, Chris R.; Emery, Colleen; Johnson, Branden L.; Leal, David; Heath, Julie A.; Dudek, Benjamin M; Preston, Charles R.; Woodbridge, Brian

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Year Published: 2020

Frequent burning causes large losses of carbon from deep soil layers in a temperate savanna

Fire activity is changing dramatically across the globe, with uncertain effects on ecosystem processes, especially below‐ground. Fire‐driven losses of soil carbon (C) are often assumed to occur primarily in the upper soil layers because the repeated combustion of above‐ground biomass limits organic matter inputs into surface soil. However, C...

Pellegrini, Adam; McLauchlan, Kendra K; Hobbie, Sarah E; Mack, Michelle C.; Marcotte, Abbey L; Nelson, David M.; Perakis, Steven; Reich, Peter B.; Whittinghill, Kyle

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Year Published: 2020

Components and predictors of biological soil crusts vary at the regional vs. plant community scales

Although biological soil crusts (biocrusts) occur globally in arid and semi-arid environments, most of our knowledge of biocrust cover and ecology is from a relatively small number of locations worldwide. Some plant communities are known to have high cover of biocrusts, but the abundance of biocrusts is largely undocumented in most plant...

Condon, Lea A.; Pyke, David A.

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Year Published: 2020

Not all fuel‐reduction treatments degrade biocrusts: Herbicides cause mostly neutral to positive effects on cover of biocrusts

In response to increasing fire, fuel‐reduction treatments are being used to minimize large fire risk. Although biocrusts are associated with reduced cover of fire‐promoting, invasive grasses, the impact of fuel‐reduction treatments on biocrusts is poorly understood. We use data from a long‐term experiment, the Sagebrush Steppe Treatment Evaluation...

Condon, Lea A.; Gray, Margaret L

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Year Published: 2020

Weed-suppressive bacteria applied as a spray or seed mixture did not control Bromus tectorum

We conducted two case studies testing effectiveness of a soil-borne bacteria, Pseudomonas fluorescens strain D7, in controlling Bromus tectorum (cheatgrass) and in affecting the density of sown desirable seedlings. We conducted two case studies testing D7’s ability to control of B. tectorum (cover, biomass and density) when mixed with native seeds...

Pyke, David A.; Shaff, Scott; Gregg, Michael A; Conley, Julie L.

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Year Published: 2020

Weed-suppressive bacteria have no effect on exotic or native plants in sagebrush-steppe

Approaches and techniques for control of exotic annual grasses are a high priority in rangelands including sagebrush steppe. Strains of the soil bacterium Pseudomonas fluorescens have been proposed to be selectively pathogenic to multiple species of exotic annual grasses (“Pf,” weed-suppressive bacteria, “WSB”). However, defensible tests...

Germino, Matthew; Lazarus, Brynne E.

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Year Published: 2020

Occupancy patterns in a reintroduced fisher population during reestablishment

Monitoring population performance in the years following species reintroductions is key to assessing population restoration success and evaluating assumptions made in planning species restoration programs. From 2008–2010 we translocated 90 fishers (Pekania pennanti) from British Columbia, Canada, to Washington's Olympic Peninsula, USA, providing...

Happe, Patricia J.; Jenkins, Kurt; McCaffery, Rebecca; Lewis, J. C.; Pilgrim, Kristine; Schwartz, Michael K.

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Year Published: 2020

Estimating population size with imperfect detection using a parametric bootstrap

We develop a novel method of estimating population size from imperfectly detected counts of individuals and a separate estimate of detection probability. Observed counts are separated into classes within which detection probability is assumed constant. Within a detection class, counts are modeled as a single binomial observation X with...

Madsen, Lisa; Dalthorp, Daniel; Huso, Manuela; Aderman, Andy

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Year Published: 2020

Post-fire aspen (Populus tremuloides) regeneration varies in response to winter precipitation across a regional climate gradient

Altered climate and changing fire regimes are synergistically impacting forest communities globally, resulting in deviations from historical norms and creation of novel successional dynamics. These changes are particularly important when considering the stability of a keystone species such as quaking aspen (Populus tremuloides Michx.), which...

McIlroy, Susan; Shinneman, Douglas J.

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Year Published: 2020

Context-dependent effects of livestock grazing in deserts of western North America

This chapter provides a general review of grazing disturbance by large mammalian grazers and the role of ecological context in moderating its effects, with emphasis on North American deserts. It discusses the ecological consequences of cessation of livestock grazing and present a case study from the Mojave Desert, United States of America. A...

Veblen, Kari E.; Beever, Erik A.; Pyke, David A.

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Year Published: 2020

Relevance of individual and environmental drivers of movement of Golden Eagles

An animal's movement is expected to be governed by an interplay between goals determined by its internal state and energetic costs associated with navigating through the external environment. Understanding this ecological process is challenging when an animal moves in two dimensions and even more difficult for birds that move in a third dimension...

Sur, Maitreyi; Duerr, Adam E.; Bell, Doug A.; Fisher, Robert N.; Tracey, Jeff A.; Bloom, Peter H.; Miller, Trish; Katzner, Todd E.