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- Stable isotope data have made pivotal contributions to nearly every discipline of the physical and natural sciences. As the generation and application of stable isotope data continues to grow exponentially, so does the need for a unifying data repository to improve accessibility and promote collaborative engagement. This paper provides an overview of the design, development, and implementation of IsoBank (www.isobank.org), a community-driven initiative to create an open-access repository for stable isotope data implemented online in 2021. A central goal of IsoBank is to provide a web-access...AuthorsOliver N. Shipley, Anna J. Dabrowski, Gabriel J. Bowen, Brian Hayden, Jonathan N. Pauli, Christopher Jordan, Lesleigh Anderson, Adriana Bailey, Clement P. Bataille, Carla Cicero, Hilary G. Close, Craig Cook, Joseph A. Cook, Ankur R. Desai, Jaivime Evaristo, Tim R. Filley, Christine A. M. France, Andrew L. Jackson, Sora Lee Kim, Sebastian Kopf, Julie Loisel, Philip Manlick, Jamie M. McFarlin, Bailey C. McMeans, Tamsin C. O’Connell, Suzanne E. Pilaar Birch, Annie L. Putman, Brice X. Semmens, Chris Stantis, Craig A. Stricker, Paul Szejner, Tara L. E. Trammell, Mark D. Uhen, Samantha Weintraub-Leff, Matthew J. Wooller, John W. Williams, Christopher T. Yarnes, Hannah B. Vander Zanden, Seth D. NewsomeKeywordsSourcePLOS ONE. 19(9): e0295662.Year2024
- A major threat to small mammalian carnivore populations is human-induced land use change, but conservation and management are inhibited by limited knowledge about their ecology and natural history. To fill a key knowledge gap of the western spotted skunk (Spilogale gracilis), we investigated their spatial ecology at the landscape and home range scale in the temperate rainforests of the Oregon Cascades during 2017–2019. For the landscape scale analysis, we used detections of western spotted skunks at 112 baited camera traps and fitted a dynamic occupancy model to investigate spatial...AuthorsMarie I Tosa, Damon B. Lesmeister, Taal LeviKeywordsSourceEcosphere. 15(8): e4981.Year2024
- 1. The expansion of grey wolves (Canis lupus) across the western United States, including on public lands used for extensive livestock grazing, requires tools and techniques for reducing wolf–livestock conflict and supporting coexistence. We examined approaches used on forested lands managed by the U.S. Forest Service, which we characterize as large, rugged and remote (LRR) landscapes. Research on the spatial aspects of where tools and techniques are deployed and their effectiveness across geographic settings is scant.2. We selected six national forests located in six western states where...AuthorsRobert Anderson, Susan Charnley, Jeffrey V. Martin, Kathleen EpsteinKeywordsSourcePeople and Nature. 4(1): 1-13.Year2024
- We conducted a high-resolution study of lead in an urban moss, Orthotrichum lyellii, to better understand lead distributions and sources in Portland, Oregon (United States). The outdoor lead landscape is found to be heterogenous, with lead concentrations varying with age of neighborhood: on average 8.3× and 19× the rural background in newer (≥1948) and older neighborhoods (≤1915), respectively. This study finds leaded gasoline to be a pervasive and persistent lead source, decades after the complete phase out of leaded gasoline use by on-road vehicles. The highest lead levels, up to 590×...AuthorsAlyssa E. Shiel, Sarah Jovan, Christina J. MurphyKeywordsSourceCommunications Earth & Environment. 5(1): 384.Year2024
- Fine-scale spatial climate variation fosters biodiversity and buffers it from climate change, but ecological studies are constrained by the limited accessibility of relevant fine-scale climate data. In this paper we introduce a novel form of species distribution model that uses species occurrences to predict high-resolution climate variation. This new category of ‘bioclimate' data, representing micro-scale climate as experienced by one or more species of interest, is a useful complement to microclimate data from existing approaches. The modeling method, called BISHOP for ‘bioclimate...AuthorsMatthew M. Kling, Kathryn C. Baer, David D. AckerlySourceEcography. 2024(9): e07131.Year2024
- Model-assisted, two-stage forest survey sampling designs provide a means to combine airborne remote sensing data, collected in a sampling mode, with field plot data to increase the precision of national forest inventory estimates, while maintaining important properties of design-based inventories, such as unbiased estimation and quantification of uncertainty. In this study, we present a comprehensive set of model-assisted estimators for domain-level attributes in a two-stage sampling design, including new estimators for densities, and compare the performance of these estimators with...AuthorsHans Andersen, Göran Ståhl, Bruce D. Cook, Douglas C. Morton, Andrew O. FinleySourceCanadian Journal of Forest Research. 54(12): 1425-1442.Year2024
- The dominant paradigm for assessing ecological responses to climate change assumes that future states of individuals and populations can be predicted by current, species-wide performance variation across spatial climatic gradients. However, if the fates of ecological systems are better predicted by past responses to in situ climatic variation through time, this current analytical paradigm may be severely misleading. Empirically testing whether spatial or temporal climate responses better predict how species respond to climate change has been elusive, largely due to restrictive data...AuthorsDaniel Perret, Margaret E. K. Evans, Dov F. SaxKeywordsSourceProceedings of the National Academy of Sciences. 121(1): e2304404120.Year2024
- Variable radius plot surveys can require updated estimates when the quality of previous estimates have declined over time. We developed a statistical estimator for this purpose that is the product of two estimators, one estimator is for the updated volume-to-basal-area ratio and the other estimator is for the updated basal area. Our estimator relies only on the surveyor identifying previously measured trees and does not require the identification of ingrowth, which simplifies its application. We also propose a variance estimator that relies on the bootstrap method. We investigate the point...AuthorsBryce Frank, Francisco Mauro, Connie Harrington, Kevin R. FordKeywordsSourceCanadian Journal of Forest Research. 54(11): 1213-1229.Year2024
- Alaska’s boreal forests are experiencing rapid changes in climate that may favor deciduous-dominated systems, with important implications for global biogeochemical and energy cycles. However, aspen (Populus tremuloides Michx.) has experienced substantial defoliation from the aspen leaf miner (Phyllocnistis populiella Cham., hereafter ALM) in Alaska, resulting in significant growth reductions. We conducted a tree-ring and Δ13C study to test the hypothesis that moisture limitation may have predisposed aspen to leaf miner damage. Contrary to our hypothesis, differences in climate-growth...AuthorsSean MP. Cahoon, Colin Maher, Daniel Crawford, Patrick F. SullivanKeywordsSourceFrontiers in Forests and Global Change. 7:1419813.Year2024
- Niche construction by biota has been frequently reported for animals and plants, but fungi have received less attention. For mycorrhizal fungi, mutualistic niche construction has been proposed where partners construct niches for each other. However, few eco-evolutionary mechanisms leading to mutualistic symbiotic feedback have been described. Here we report niche construction by two ectomycorrhiza-forming species of truffles, Tuber aestivum and T. melanosporum. The soils of 263 spots of these Tuber, which create bare patches (brûlés), have been monitored (9–10 years) in natural forests to...AuthorsLuis G. García-Montero, Vicente Monleon, Inmaculada Valverde-Asenjo, Cristina Menta, Thomas W. KuyperKeywordsSourceSoil Biology and Biochemistry. 189: 109276.Year2024