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- High severity fire is far outpacing post-fire reforestation capacity across the American West, highlighting the need to better understand when and where natural regeneration is sufficient to meet short- and long-term reforestation goals. The vast majority of available post-fire data represents regeneration in the first few years following a fire, raising the question of how well recovery trajectories can be predicted from early post-fire snapshots. We utilize a unique dataset from seven wildfires and 78 plots surveyed twice following stand-replacing fire in two California ecoregions, the north...AuthorsClaire M. Tortorelli, Derek J.N. Young, Matthew J. Reilly, Ramona J. Butz, Hugh D. Safford, Nina E. Venuti, Kevin R. Welch, Andrew M. LatimerKeywordsSourceForest Ecology and Management. 566(5): 122100.Year2024
- Hunting is a popular recreational pursuit that can provide social, economic, and ecological benefits. It also serves as a primary tool for managing deer and elk populations. Yet hunter behavior—how different types of hunters (elk vs deer, rifle vs archery) use landscapes and the factors that influence hunting success—is seldom quantified. Scientists at the Starkey Experimental Forest and Range collected real-time data from tracking units worn by hunters to better understand their movements as well as how deer and elk respond to their presence. They found that hunters used a small portion of t...AuthorsSylvia Kantor, Mary Rowland, Michael Wisdom, Darren ClarkKeywordsSourceScience Findings 269. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p.Year2024
- Decreases in body sizes of animals related to recent climate warming can affect population persistence and stability. However, direct observations of average sizes over time and their interrelationships with underlying density-dependent and density-independent processes remain poorly understood owing to the lack of appropriate long-term datasets. We measured body size of two species common to headwater streams in coastal and Cascades ecoregions of the Pacific Northwest of North America over multiple decades, comparing old-growth and managed forests. We found consistent decreases in median leng...AuthorsIvan Arismendi, Stanley V Gregory, Douglas S. Bateman, Brooke E. PenalunaKeywordsSourceScientific Reports. 14(1): 13614.Year2024
- This paper presents findings from a study that examined how well mountain bikers' cognitive processes predicted their recommendation intent—the intention to share their recreation experience with others. Specifically, we examined relationships between different mountain biking recreation goal appraisals, emotions, and mountain bikers’ intentions to suggest mountain biking destinations to others. We tested hypothesized relationships using a structural equation modeling approach. Our results show that goal congruence and interest are the primary appraisal factors predicting recommendation intent...AuthorsIan E. Munanura, Jeffrey D. Kline, Javier A. Parada Torres, Randall Rosenberger, Miles Phillips, Julie MillerSourceJournal of Outdoor Recreation and Tourism. 47(1): 100791.Year2024
- Wood turtles (Glyptemys insculpta) are a species of conservation concern throughout their geographic distribution. Several studies have investigated individual-level habitat selection of wood turtles in the Upper Midwest in the United States, but the effects of habitat characteristics on abundance are poorly understood. This information is needed to improve landscape-level habitat management and conservation initiatives for the species. Our study aimed to identify important aquatic and terrestrial habitat characteristics and quantify their influence on abundance dynamics of adult wood turtles ...AuthorsJena M. Staggs, Donald Brown, Andrew F. Badje, James T. Anderson, Lena V Carlson, Carly N. Lapin, Madaline M. Cochrane, Ron A. MoenKeywordsSourceThe Journal of Wildlife Management. 88(5): e22589.Year2024
- Wisconsin encompasses a substantial portion of the Upper Midwest distribution for the globally endangered Glyptemys insculpta (Wood Turtle). However, the paucity of prior research and population monitoring statewide has limited our understanding of their status and population trends in the state. To address this information gap, we conducted standardized Wood Turtle population surveys at 50 sites across 8 HUC-8 watersheds in Wisconsin from 2018 to 2023 to estimate adult abundance and population demographic parameters. We captured turtles at 29 of 50 sites, and detected 250 unique individuals, ...AuthorsAndrew F. Badje, Donald J. Brown, Jena M. Staggs, Lena V Carlson, Carly N. LapinKeywordsSourceNortheastern Naturalist. 31(sp12): G28-G46.Year2024
- Understanding space-use dynamics of wildlife populations is important for informing habitat management and restoration initiatives. In West Virginia, Clemmys guttata (Spotted Turtle) is restricted to the eastern panhandle region and is considered a species of greatest conservation need. The West Virginia Division of Natural Resources is interested in managing and restoring Spotted Turtle habitat, but information on space use is limited. To address this information gap, we used radiotelemetry to track space-use patterns of 9 Spotted Turtles at 2 sites that represent different wetland types in t...AuthorsKevin J. Oxenrider, Donald J. BrownKeywordsSourceNortheastern Naturalist. 31(sp12): C17-C26.Year2024
- Urban smoke exposure events from large wildfires have become increasingly common in California and throughout the western United States. The ability to study the impacts of high smoke aerosol exposures from these events on the public is limited by the availability of high-quality, spatially resolved estimates of aerosol concentrations. Methods for assigning aerosol exposure often employ multiple data sets that are time-consuming to create and difficult to reproduce. As these events have gone from occasional to nearly annual in frequency, the need for rapid smoke exposure assessments has increa...AuthorsSean Raffuse, Susan O'Neill, Rebecca SchmidtKeywordsSourceGeoscientific Model Development. 17(1): 381-397.Year2024
- Forest ecosystems store large amounts of carbon and can be important sources, or sinks, of the atmospheric carbon dioxide that is contributing to global warming. Understanding the carbon storage potential of different forests and their response to management and disturbance events are fundamental to developing policies and scenarios to partially offset greenhouse gas emissions. Projections of live tree carbon accumulation are handled differently in different models, with inconsistent results. We developed growth-and-yield style models to predict stand-level live tree carbon density as a functi...AuthorsPaul J. Chisholm, Andrew N. GrayKeywordsSourcePLOS ONE. 19(5): e0302823.Year2024
- Data from tree cores and disks were used to develop biomass and carbon mass taper models for five major Sierra Nevada conifer species. These taper models were used to predict masses of tree boles, tree bole portions, branch, and foliage using carbon fraction data for oven-dried and living tissues. Taper models developed using core data were well modeled to disk data with R2 values ranging from 0.98 to 0.99 by inclusion of a calibration parameter. The fit of the final models suggests our approach can be used to include large diameter trees that cannot be cut down in biomass data collection effo...AuthorsDryw A. Jones, Kevin L. O'HaraKeywordsSourceCanadian Journal of Forest Research. 54(2): 192-206.Year2024