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- The success of long-term wildlife monitoring programs can be influenced by many factors and study designs often represent compromises between spatial scales and costs. Adaptive monitoring programs can iteratively manage this tension by adopting new cost-efficient technologies, which can provide projects the opportunity to reallocate costs to address new hypotheses, adapt to changing ecological conditions, or adjust sampling scale or resolution. If there is interest in longer time series of monitoring data, methodological transitions may necessitate integrated models to link newer data with...AuthorsMatthew J. Weldy, Damon B. Lesmeister, Charles B. Yackulic, Cara L. Appel, Chris McCafferty, J. David WiensKeywordsSourceEcological Indicators. 146: 109815.Year2023
- The pursuit of ungulates as game animals, whether for recreation, cultural tradition, or meat, is a dominant activity on public and private lands in North America and much of the world. Strategic regulation of hunting is key for managing game population abundance, age and sex structure, and distribution, with harvest rates a function of both hunter success and participation. Hunter satisfaction is often linked to success and ultimately with hunter recruitment and retention, a growing concern for wildlife agencies. Yet knowledge is lacking about what hunter characteristics or behaviors are...AuthorsMary M. Rowland, Ryan M. Nielson, Michael Wisdom, Darren A. Clark, Guy T. DiDonato, Jennifer Hafer, Bridgett Naylor, Bruce K. JohnsonKeywordsSourceWildlife Society Bulletin. 47(2): 796-821.Year2023
- We conducted a range-wide investigation of the dynamics of site-level reproductive rate of northern spotted owls using survey data from 11 study areas across the subspecies geographic range collected during 1993–2018. Our analytical approach accounted for imperfect detection of owl pairs and misclassification of successful reproduction (i.e., at least one young fledged) and contributed further insights into northern spotted owl population ecology and dynamics. Both nondetection and state misclassification were important, especially because factors affecting these sources of error also...AuthorsJeremy T. Rockweit, Julianna M. Jenkins, James E. Hines, James D. Nichols, Katie M. Dugger, Alan B. Franklin, Peter C. Carlson, William L. Kendall, Damon B. Lesmeister, Christopher McCafferty, Steven H. Ackers, L. Steven Andrews, Larissa L. Bailey, Jesse Burgher, Kenneth P. Burnham, Tara Chestnut, Mary M. M. Conner, Raymond J. Davis, Krista E. Dilione, Eric D. Forsman, Elizabeth M. Glenn, Scott A. Gremel, Keith A. Hamm, Dale R. Herter, J. Mark Higley, Rob B. Horn, David W. Lamphear, Trent L. McDonald, Janice A. Reid, Carl J. Schwarz, David C. Simon, Stan Sovern, James K. Swingle, J. David Wiens, Heather Wise, Charles B. YackulicKeywordsSourceEcological Applications. 33(1): 1050-.Year2023
- The 1980 volcanic eruption of Mount St. Helens had profound impacts on the geology, hydrology, and ecology of its surrounding landscapes. Consequently, the event provided a unique opportunity to study ecological change over time in relation to abiotic factors. To better assess the role localized environmental conditions play in these larger processes, we have monitored micrometeorological conditions across 6 disturbance zones on Mount St. Helens created by the eruption. We deployed 823 environmental sensors at 191 sites from 1997-2022 to measure the temperature and relative humidity of...AuthorsChristian Che‐Castaldo, Charlie CrisafulliKeywordsSourceEcology. 104(3): e3950.Year2023
- Understanding how trees respond to drought is critical to understanding forest sensitivity to global climate change, which can help inform forest policy and management decisions. However, mechanisms governing carbon fixation and water fluxes in response to increased temperatures and water limitation in regions with Mediterranean climates, with wet winters and dry summers, remain only partially understood. We tested the effect of increased vapor pressure deficit (VPD) and decreased rainfall on water and carbon fluxes of Douglas-fir (Pseudotsuga menziesii) trees using the Soil-Plant-Atmospher...AuthorsKarla M. Jarecke, Linnia R. Hawkins, Kevin D. Bladon, Steve WondzellKeywordsSourceAgricultural and Forest Meteorology. 329(451): 109267.Year2023
- Height growth in trees is expensive in terms of the amount of stem tissue required to maintain productive tissue in sunlight. However, shifting allocation from stem support to leader growth and foliage production may allow trees to minimize shading effects on photosynthesis, especially for shorter trees within the population. This hypothesis was evaluated with data collected in competition studies for red alder (Alnus rubra Bong.), Douglas-fir (Pseudotsuga menziesii var. menziesii [Mirb.] Franco), and red pine (Pinus resinosa Ait.). Stem allocation per unit height growth was defined as a...AuthorsThomas J. Dean, Constance A. Harrington, Anthony D'Amato, Brian J. J. PalikKeywordsSourceForest Ecology and ManagementYear2023
- 1. Lure attraction strength for red turpentine beetle, Dendroctonus valens (Coleoptera: Curculionidae: Scolytinae) observed previously in US Pacific Northwest ponderosa pine forests is (–)-β-pinene+ethanol > (+)-3-carene+ethanol, but untested elsewhere in its western US range. Thus, both were tested with (–)-β-pinene, (+)-3-carene, ethanol, and a blank in Oregon and California sites burned by wildfire, whereas in Arizona the first four lures were tested in a thinned-unburned site. 2. The D. valens responses in burned Oregon and California sites were similar, (–)-β-pinene+ethanol > (–)-β-pin...AuthorsRick G. Kelsey, Douglas J. Westlind, Monica L. GaylordKeywordsSourceAgricultural and Forest Entomology. 25(1): 111-118.Year2023
- This report provides detailed estimates and highlights key findings from Forest Inventory and Analysis (FIA) data collected across the Tanana unit in interior Alaska, 2014–2018. The Tanana unit encompasses much of the Tanana River basin and is one of six inventory units distributed throughout the expansive boreal forest that comprises much of Alaska. Estimates of forest area, volume, aboveground biomass, and ecosystem carbon are provided across land ownerships, forest types, and forest demographics throughout the unit. The Tanana unit covers approximately 33.4 million ac, of which 20.8...AuthorsSean MP. Cahoon, Kathryn C. Baer, Kate Legner, Loretta Winton, Garret Dubois, Will Putman, Patrick Sullivan, Kate C. Marcille, Hans Andersen, Jacob L. Strunk, Richard Smith, John M. Chase, Glenn Christensen, Jane Terzibashian, Andrew GrayKeywordsSourceGen. Tech. Rep. PNW-GTR-1005. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 92 p.Year2022
- To investigate how source and processing control the composition of “terrestrial” dissolved organic matter (DOM), we combine soil and tree leachates, tree DOM, laboratory bioincubations, and ultrahigh resolution Fourier-transform ion cyclotron resonance mass spectrometry in three common landscape types (upland forest, forested wetland, and poor fen) of Southeast Alaska’s temperate rainforest. Tree (Tsuga heterophylla and Picea sitchensis) needles and bark and soil layers from each site were leached, and tree stemflow and throughfall collected to examine DOM sources. Dissolved organic...AuthorsM. I Behnke, J. B. Fellman, David V. D'Amore, S. M. Gomez, R. G. M. SpencerKeywordsSourceBiogeochemistry. 51: 4328-4349.Year2022
- Black ash wetlands cover approximately 1.2 million ha of wetland forest in the western Great Lakes region, providing critical habitat for wildlife. The future of these wetlands is critically threatened by a variety of factors, including emerald ash borer (Agrilus planipennis; emerald ash borer [EAB]), which has been eliminating native populations of otherwise healthy ash throughout the Great Lakes region since it was discovered in 2002. To quantify the potential impacts of tree mortality from EAB on wildlife communities, we measured seasonal bird, mammal, and amphibian diversity in black...AuthorsAlexis Grinde, Melissa Youngquist, Robert A. Slesak, Stephen Kolbe, Josh Bednar, Brian J. J. Palik, Anthony D'AmatoKeywordsSourceEcological Applications. 32(4): 345-365.Year2022