Forest and Rangeland Ecosystem Science Center (FRESC)

Publications

Filter Total Items: 1,523
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Year Published: 2019

Vegetation and precipitation shifts interact to alter organic and inorganic carbon storage in cold desert soils

Dryland ecosystems are experiencing shifts in rainfall and plant community composition, which are expected to alter cycling and storage of soil carbon (C). Few experiments have been conducted to examine long‐term effects on (1) soil organic C (SOC) pools throughout the soil profile, and (2) soil inorganic C (SIC) pools as they relate to dynamic...

Huber, David P.; Lohse, Kathleen A.; Commendador, Amy; Joy, Stephen; Aho, Ken A.; Finney, Bruce P.; Germino, Matthew J.

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Year Published: 2019

Trends in landbird density at two national parks in fragmented, mixed-use landscapes of the Pacific Northwest

National parks play a key role in conserving species by providing landscapes where threats from anthropogenic disturbance are reduced. In a recent study of 3 large wilderness parks in the Pacific Northwest, nearly all landbird species were found to be stable or increasing. Nonetheless, contemporary results from the Breeding Bird Survey and mark-...

Holmgren, M.; Wilkerson, R.; Siegel, R.; Ransom, J.; Jenkins, Kurt J.; Boetsch, J.; Ray, Chris; Holmgren, Mandy; Wilkerson, Robert L.; Siegel, Rodney B.; Boetsch, John R.; Jenkins, Kurt J.; Ransom, Jason I.

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Year Published: 2019

An improved mechanical owl for efficient capture of nesting raptors

Scientific study of raptors often requires the use of a lure to capture individuals for marking or collecting various data and samples. Live lure owls in the genus Bubo are commonly used with mist nets or dho-gazas to trap nesting raptors, but the use of these live lures presents ethical, logistical, and financial challenges. Although...

Jensen, Meghan K.; Hamburg, Shanti D.; Rota, Christopher T.; Brinker, David F.; Coles, Dustin L.; Manske, Mark A.; Slabe, Vincent A.; Stuber, Matthew J.; Welsh, Amy B.; Katzner, Todd E.

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Year Published: 2019

Adaptive variation, including local adaptation, requires decades to become evident in common gardens

Population‐level adaptation to spatial variation in factors such as climate and soils is critical for climate‐vulnerability assessments, restoration seeding, and other ecological applications in species management, and the underlying information is typically based on common‐garden studies that are short duration. Here, we show >20 yr were...

Germino, Matthew J.; Moer, Ann M.; Sands, Alan R.

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Year Published: 2019

Effects of nest exposure and spring temperatures on golden eagle brood survival: An opportunity for mitigation

We examined Golden Eagle (Aquila chrysaetos) brood survival in relation to spring temperatures and exposure of nests to afternoon sun in southwestern Idaho from 1970 through 2012. Most (77%) nests classified as shaded in a subset of 96 nests had northwest to east aspects, and most (71%) nests classified as exposed had south to west aspects. We...

Kochert, Michael N.; Steenhof, Karen; Brown, Jessi L.

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Year Published: 2019

Using motion-activated cameras to study diet and productivity of cliff-nesting Golden Eagles

Studies of cliff-nesting raptors can be challenging because direct observations of nest contents are difficult. Our goals were to develop a protocol for installing motionactivated trail cameras at Golden Eagle (Aquila chrysaetos) nests to record diet information and productivity, and to estimate prey detection probability using different diet...

Harrison, Jordan; Kochert, Michael N.; Pauli, Benjamin P; Heath, Julie A.

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Year Published: 2019

Nutrients mediate the effects of temperature on methylmercury concentrations in freshwater zooplankton

Methylmercury (MeHg) bioaccumulation in freshwater aquatic systems is impacted by anthropogenic stressors, including climate change and nutrient enrichment. The goal of this study was to determine how warmer water temperatures and excess nutrients would alter zooplankton communities and phytoplankton concentrations, and whether those changes would...

Jordan, Meredith P; Stewart, Robin; Eagles-Smith, Collin A.; Stracker, Angela L

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Year Published: 2019

Simulating demography, genetics, and spatially explicit processes to inform reintroduction of a threatened char

The success of species reintroductions can depend on a combination of environmental, demographic, and genetic factors. Although the importance of these factors in the success of reintroductions is well‐accepted, they are typically evaluated independently, which can miss important interactions. For species that persist in metapopulations, movement...

Mims, Meryl C.; Day, Casey C.; Burkhart, Jacob J.; Fuller, Matthew R.; Hinkle, Jameson; Bearlin, Andrew; Dunham, Jason B.; DeHaan, Patrick W.; Holden, Zachary A.; Landguth, Erin L.

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Year Published: 2019

Hierarchical multi-population viability analysis

Population viability analysis (PVA) uses concepts from theoretical ecology to provide a powerful tool for quantitative estimates of population dynamics and extinction risks. However, conventional statistical PVA requires long-term data from every population of interest, whereas many species of concern exist in multiple isolated populations that...

Leasure, Douglas R.; Wenger, Seth J.; Chelgren, Nathan; Neville, Helen M.; Dauwalter, Daniel C.; Bjork, Robin; Fesenmyer, Kurt A.; Dunham, Jason B.; Peacock, Mary M.; Luce, Charlie H.; Lute, Abby C.; Isaak, Daniel J.

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Year Published: 2019

Compounding effects of climate change reduce population viability of a montane amphibian

Anthropogenic climate change presents challenges and opportunities to the growth, reproduction, and survival of individuals throughout their life cycles. Demographic compensation among life‐history stages has the potential to buffer populations from decline, but alternatively, compounding negative effects can lead to accelerated population decline...

Kissel, Amanda M.; Palen, Wendy J.; Ryan, Maureen E.; Adams, Michael J.

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Year Published: 2019

Conceptualizing ecological responses to dam removal: If you remove it, what's to come?

One of the desired outcomes of dam decommissioning and removal is the recovery of aquatic and riparian ecosystems. To investigate this common objective, we synthesized information from empirical studies and ecological theory into conceptual models that depict key physical and biological links driving ecological responses to removing dams. We...

Bellmore, J. Ryan; Pess, George R.; Duda, Jeffrey J.; O'Connor, Jim E.; East, Amy E.; Foley, Melissa M.; Wilcox, Andrew C.; Major, Jon J.; Shafroth, Patrick B.; Morley, Sarah A.; Magirl, Christopher S.; Anderson, Chauncey W.; Evans, James E.; Torgersen, Christian E.; Craig, Laura S.

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Year Published: 2019

Probability of streamflow permanence model (PROSPER): A spatially continuous model of annual streamflow permanence throughout the Pacific Northwest

The U.S. Geological Survey (USGS) has developed the PRObability of Streamflow PERmanence (PROSPER) model, a GIS raster-based empirical model that provides streamflow permanence probabilities (probabilistic predictions) of a stream channel having year-round flow for any unregulated and minimally-impaired stream channel in the Pacific Northwest...

Jaeger, Kristin; Sando, Thomas R.; McShane, Ryan R.; Dunham, Jason B.; Hockman-Wert, David; Kaiser, Kendra E; Hafen, Konrad (Contractor); Risley, John; Blasch, Kyle