144 Works

Montana codling moth trap-based biofix compared to two fixed biofix models, 2018-2020

Rachel Leisso, Katrina Mendrey, Tracy Novak, Chase Anderson, Sandy Perrin, Ashley Kapus, Amy Darling & Zach Miller
Codling moth (Cydia pomonella) is the primary insect pest of apple and pear trees in Montana and can destroy an entire crop if uncontrolled. Understanding the moth's life cycle is important for determining management methods and timing of treatments. The purpose of this study was to compare trap-based biofix (first consistent moth capture in the spring) to two temperature based trap-free models for fixed biofix developed in other apple producing regions. Trap-free models determine a...

Evolutionary sample size and consilience in phylogenetic comparative analysis

Jacob Gardner & Chris Organ
Phylogenetic comparative methods (PCMs) are commonly used to study evolution and adaptation. However, frequently used PCMs for discrete traits mishandle single evolutionary transitions. They erroneously detect correlated evolution in these situations. For example, hair and mammary glands cannot be said to have evolved in a correlated fashion because each evolved only once in mammals, but a commonly used model (Pagel’s Discrete) statistically supports correlated (dependent) evolution. Using simulations, we find that rate parameter estimation, which...

Change in terrestrial human footprint drives continued loss of intact ecosystems

Brooke Williams, Oscar Venter, James Allan, Scott Atkinson, Jose Rehbein, Michelle Ward, Moreno Di Marco, Hedley Grantham, Jamison Ervin, Scott Goetz, Andrew Hansen, Patrick Jantz, Rajeev Pillay, Susana Rodríguez-Buriticá, Christina Supples, Anne Virnig & James Watson
Human pressure mapping is important for understanding humanity's role in shaping Earth’s patterns and processes. Our ability to map this influence has evolved, thanks to powerful computing, earth observing satellites, and new bottom-up census and crowd-sourced data. Here, we provide the latest temporally inter-comparable maps of the terrestrial human footprint, and assessment of change in human pressure at global, biome, and ecoregional scales. In 2013, 42% of terrestrial Earth could be considered relatively free of...

Gunshots recorded in an open field using iPod Touch devices

Seth Cooper & Steven Shaw
Seven different firearms, including four pistols and three rifles, were fired at least three times each, in order, at a target located at a distance of 45 meters from the shooter, in an open field in Gallatin County, Montana. Sound was recorded from four different iPod Touch devices.

Repository Analytics and Metrics Portal (RAMP) 2018 data

Jonathan Wheeler & Kenning Arlitsch
The Repository Analytics and Metrics Portal (RAMP) is a web service that aggregates use and performance use data of institutional repositories. The data are a subset of data from RAMP, the Repository Analytics and Metrics Portal (http://rampanalytics.org), consisting of data from all participating repositories for the calendar year 2018. For a description of the data collection, processing, and output methods, please see the "methods" section below. Note that the RAMP data model changed in August,...

Repository Analytics and Metrics Portal (RAMP) 2019 data

Jonathan Wheeler & Kenning Arlitsch
Version update: The originally uploaded versions of the CSV files in this dataset included an extra column, "Unnamed: 0," which is not RAMP data and was an artifact of the process used to export the data to CSV format. This column has been removed from the revised dataset. The data are otherwise the same as in the first version. The Repository Analytics and Metrics Portal (RAMP) is a web service that aggregates use and performance...

Modeling management strategies for chronic disease in wildlife: predictions for the control of respiratory disease in bighorn sheep

Kezia Manlove, Emily Almberg, E. Frances Cassirer, Jennifer Ramsey, Keri Carson, Justin Gude & Raina Plowright
1. Controlling persistent infectious disease in wildlife populations is an on-going challenge for wildlife managers and conservationists worldwide. 2. Here, we develop a dynamic pathogen transmission model capturing key features of M. ovipneumoniae infection, a major cause of population declines in North American bighorn sheep (Ovis canadensis). We explore the effects of model assumptions and parameter values on disease dynamics, including density versus frequency dependent transmission, the inclusion of a carrier class versus a longer...

Dietary composition and fatty acid content of giant salmonflies (Pteronarcys californica) in two Rocky Mountain rivers

Michelle Briggs, Lindsey Albertson, Zach Maguire, Sophia Swart, Wyatt Cross, Cornelia Twining, Jeff Wesner, Colden Baxter & David Walters
Many aquatic invertebrates are declining or facing extinction from stressors that compromise physiology, resource consumption, reproduction, and phenology. However, the influence of these common stressors specifically on consumer-resource interactions for aquatic invertebrate consumers is only beginning to be understood. We conducted a field study to investigate Pteronarcys californica (i.e., the ‘giant salmonfly’), a large-bodied insect that is ecologically and culturally significant to rivers throughout the western U.S. We sampled gut contents and polyunsaturated fatty acid...

Analytic dataset informing modeling of winter species distributions of North American bat species

Sarah Olson, Meredith McClure, Catherine Haase, Carter Hranac, David Hayman, Brett Dickson, Liam McGuire, Daniel Crowley, Nathan Fuller, Cori Lausen & Raina Plowright
The fungal pathogen Pseudogymnoascus destructans and resultant white-nose syndrome (WNS) continues to advance across North America, infecting new bat populations, species, and hibernacula. Western North America hosts the highest bat diversity in the U.S. and Canada, yet little is known about hibernacula and hibernation behavior in this region. An improved understanding of where bats hibernate and the conditions that create suitable hibernacula is critical if land managers are to anticipate and address the conservation needs...

Conceptualizing relationships among hyporheic exchange, storage, and water age: data represented in published figures

Geoffrey Poole, S. Katie Fogg, Scott O'Daniel, Ann Marie Reinhold, Samuel Carlson, Elizabeth Mohr & Hayley Oakland
Hyporheic exchange is a key driver of ecosystem processes in streams, yet stream ecologists often fail to leverage detailed conceptual models developed by engineers and hydrologists describing the relationship between water storage, water balance, and water age (time elapsed since a conceptual parcel of water entered the hyporheic zone) in hyporheic zones. In a companion paper (G.C. Poole et al. Hyporheic Hydraulic Geometry: Conceptualizing relationships among hyporheic exchange, storage, and water age, published in PLoS...

Data from: Microstructural description of the maniraptoran egg Protoceratopsidovum

Seung Choi, Daniel Barta, Miguel Moreno-Azanza, Noe-Heon Kim, Colin Shaw & David Varricchio
Since their discovery in the 1920s, the affinity of asymmetric, elongated dinosaur eggs from the Late Cretaceous of Mongolian has been controversial, with previous hypotheses supporting either a ceratopsian or maniraptoran affinity. Recent technical advancements in palaeontology provide a novel approach to diagnose maniraptoran eggs, and the discovery of soft ceratopsian eggs makes the controversy a timely issue worth revisiting. Here, we analysed Protoceratopsidovum eggshell from southern Mongolia with electron backscatter diffraction (EBSD) and the...

Cross-biome synthesis of source versus sink limits to tree growth

Antoine Cabon, Steven A. Kannenberg, Flurin Babst, Dennis Baldocchi, Soumaya Belmecheri, Nicolas Delpierre, Rossella Guerrieri, Justin Maxwell, Shawn McKenzie, Chritoforos Pappas, Adrian Rocha, Paul Szejner, Masahito Ueyama, Danielle Ulrich, Caroline Vincke, Jingshu Wei, David Woodruff, Altaf Arain, Rick Meinzer, David J. P. Moore, Steven L. Voelker, William R. L. Anderegg & Frederick C. Meinzer
Uncertainties surrounding tree carbon allocation to growth are a major limitation to projections of forest carbon sequestration and response to climate change. The prevalence and extent to which carbon assimilation (source) or cambial activity (sink) mediate wood production are fundamentally important and remain elusive. We quantified source-sink relations across biomes by combining eddy-covariance gross primary production with extensive on-site and regional tree ring observations. We found widespread temporal decoupling between carbon assimilation and tree growth,...

Public opinion about management strategies for a low-profile Species across multiple jurisdictions: whitebark pine in the northern Rockies

Elizabeth Shanahan, Eric Raile, Helen Naughton, Michael Wallner & Kendall Houghton
1. As public land managers seek to adopt and implement conservation measures aimed at reversing or slowing the negative effects of climate change, they are looking to understand public opinion regarding different management strategies. 2. This study explores drivers of attitudes toward different management strategies (i.e., no management, protection, and restoration) for a low-profile but keystone tree species, the whitebark pine (Pinus albicaulis), in the Greater Yellowstone Ecosystem. Since the whitebark pine species has a...

Predation strongly limits demography of a keystone migratory herbivore in a recovering transfrontier ecosystem

Fred Watson, Matthew Becker, Daan Smit, Egil Droge, Teddy Mukula, Sandra Martens, Shadrach Mwaba, David Christianson, Scott Creel, Angela Brennan, Jassiel M'soka, Angela Gaylard, Chuma Simukonda, Moses Nyirenda & Bridget Mayani
Large herbivore migrations are imperiled globally; however, the factors limiting a population across its migratory range are typically poorly understood. Zambia’s Greater Liuwa Ecosystem (GLE) contains one of the largest remaining blue wildebeest (Connochaetes taurinus taurinus) migrations, yet the population structure, vital rates, and limiting factors are virtually unknown. We conducted a long-term demographic study of GLE wildebeest from 2012–2019 of 107 collared adult females and their calves, 7,352 herd observations, 12 aerial population surveys,...

Fish carcass deposition to suppress invasive lake trout through hypoxia causes limited, non-target effects on benthic invertebrates in Yellowstone Lake

Michelle Briggs, Lindsey Albertson, Dominique Lujan, Lusha Tronstad, Hayley Glassic, Christopher Guy & Todd Koel
Invasive species can have negative effects on native biodiversity and ecosystem function, and suppression is often required to minimize the effects. However, management actions to suppress invasive species may cause negative, unintended effects on non-target taxa. Across the USA, lake trout (Salvelinus namaycush) are invasive in many freshwater ecosystems, reducing native fish abundance and diversity through predation and competition. In an integrated pest management approach, lake trout embryos in Yellowstone Lake, Wyoming are suppressed by...

Data from: Pathogen spillover driven by rapid changes in bat ecology. Dataset J: Winter flower pulses

Peggy Eby, Alison Peel, Andrew Hoegh, Wyatt Madden, John Giles, Peter Hudson & Raina Plowright

Data from: Pathogen spillover driven by rapid changes in bat ecology. Dataset I: Landcover data

Peggy Eby, Alison Peel, Andrew Hoegh, Wyatt Madden, John Giles, Peter Hudson & Raina Plowright

Data and figure from: Pathogen spillover driven by rapid changes in bat ecology. Bayesian network model

Peggy Eby, Alison Peel, Andrew Hoegh, Wyatt Madden, John Giles, Peter Hudson & Raina Plowright

Increasing prevalence of severe fires change the structure of arthropod communities: Evidence from a meta-analysis

Blyssalyn Bieber, Dhaval Vyas, Amanda Koltz, Laura Burkle, Kiaryce Bey, Claire Guzinski, Shannon Murphy & Mayra Vidal
1. Animal ecology and evolution are shaped by environmental perturbations, which are undergoing unprecedented alterations due to climate change. Fire is one such perturbation that causes significant disruption by causing mortality and altering habitats and resources for animals. Fire regimes are changing on a global scale, but the effects of these changes on animal communities are poorly understood. Arthropods are one of the most ubiquitous and diverse animal taxa on the planet and their populations...

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  • Montana State University
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  • Center for Large Landscape Conservation
  • United States Geological Survey
  • University of Montana
  • University of Arizona