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Stream metabolism increases with drainage area and peaks asynchronously across a stream network Stream metabolism increases with drainage area and peaks asynchronously across a stream network

Quantifying the spatial and temporal dynamics of stream metabolism across stream networks is key to understanding carbon cycling and stream food web ecology. To better understand intra-annual temporal patterns of gross primary production (GPP) and ecosystem respiration (ER) and their variability across space, we continuously measured dissolved oxygen and modeled stream metabolism for an...
Authors
Francine H. Mejia, Alexander K. Fremier, Joseph R. Benjamin, J. Ryan Bellmore, Adrianne Z. Grimm, Grace A. Watson, Michael Newsom

Vegetation and precipitation shifts interact to alter organic and inorganic carbon storage in cold desert soils 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 changes in C storage and climate change. We...
Authors
David P. Huber, Kathleen A. Lohse, Amy Commendador, Stephen Joy, Ken A. Aho, Bruce P. Finney, Matthew J. Germino

Trends in landbird density at two national parks in fragmented, mixed-use landscapes of the Pacific Northwest 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-recapture studies fuel concerns that some...
Authors
Chris Ray, Mandy Holmgren, Robert L. Wilkerson, Rodney B. Siegel, John R. Boetsch, Kurt J. Jenkins, Jason I. Ransom

An improved mechanical owl for efficient capture of nesting raptors 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 owls mounted by taxidermists and mechanical owls have...
Authors
Meghan K. Jensen, Shanti D. Hamburg, Christopher T. Rota, David F. Brinker, Dustin L. Coles, Mark A. Manske, Vincent A. Slabe, Matthew J. Stuber, Amy B. Welsh, Todd E. Katzner

Adaptive variation, including local adaptation, requires decades to become evident in common gardens 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 required for adaptive differences to emerge among...
Authors
Matthew J. Germino, Ann M. Moer, Alan R. Sands

Landscape and organismal factors affecting sagebrush-seedling transplant survival after megafire restoration Landscape and organismal factors affecting sagebrush-seedling transplant survival after megafire restoration

Larger and more frequent disturbances are motivating efforts to accelerate recovery of foundational perennial species by focusing efforts into establishing island patches to sustain keystone species and facilitate recovery of the surrounding plant community. Evaluating the variability in abiotic and biotic factors that contribute to differences in survival and establishment can provide...
Authors
Bill Davidson, Matthew J. Germino, Bryce Richardson, David Barnard

Effects of nest exposure and spring temperatures on golden eagle brood survival: An opportunity for mitigation 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 analyzed survival of 1154 Golden Eagle...
Authors
Michael N. Kochert, Karen Steenhof, Jessi L. Brown

Using motion-activated cameras to study diet and productivity of cliff-nesting Golden Eagles 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 study methods. In 2014 and 2015, we installed...
Authors
Jordan Harrison, Michael N. Kochert, Benjamin P. Pauli, Julie A. Heath

Can’t see the random forest for the decision trees: Selecting predictive models for restoration ecology Can’t see the random forest for the decision trees: Selecting predictive models for restoration ecology

Improving predictions of restoration outcomes is increasingly important to resource managers for accountability and adaptive management, yet there is limited guidance for selecting a predictive model from the multitude available. The goal of this paper was to identify an optimal predictive framework for restoration ecology using eleven modeling frameworks (including, machine learning...
Authors
David Barnard, Matthew Germino, David S. Pilliod, Robert Arkle, Cara Applestein, Bill Davidson, Matthew Fisk

Nutrients mediate the effects of temperature on methylmercury concentrations in freshwater zooplankton 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 in turn increase or decrease MeHg...
Authors
Meredith P Jordan, A. Robin Stewart, Collin A. Eagles-Smith, Angela L Stracker

Simulating demography, genetics, and spatially explicit processes to inform reintroduction of a threatened char 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 through and interaction with the...
Authors
Meryl C. Mims, Casey C. Day, Jacob J. Burkhart, Matthew R. Fuller, Jameson Hinkle, Andrew Bearlin, Jason B. Dunham, Patrick W. DeHaan, Zachary A. Holden, Erin L. Landguth

A strategy for defining the reference for land health and degradation assessments A strategy for defining the reference for land health and degradation assessments

Much of the confusion about the definition of reference conditions for land health and degradation assessments is due to differences in policy and management objectives. Selection of a historic reference where it is not necessary, such as in the definition of future land degradation neutrality, can add significant cost and uncertainty to land management projects that require some...
Authors
Jeffrey E. Herrick, Patrick Shaver, David A. Pyke, Mike Pellant, David Toledo, Nika Lepak
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