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- 1. Outdoor recreation is an essential way many people engage with nature. The provision of public spaces for recreation intersects with conservation practices motivated by intertwined social and ecological values, such as strict practices associated with the concept of ‘wilderness’. Debates persist about how such concepts and management practices influence people's recreation experiences.2. Many US public land management agencies facilitate opportunities for outdoor recreation, relying on management frameworks and tools intended to foster specific experiential qualities. But these framework...AuthorsMonika Derrien, Samantha G. Winder, Spencer A. Wood, Lesley Miller, Emilia H. Lia, Lee K. Cerveny, Sarah Lange, Sonja Kolstoe, Grace McGrady, Anna RothKeywordsSourcePeople and Nature. 6(1): 202-219.Year2024
- Species management and conservation efforts are often based on range-wide trends, assuming dynamic equilibrium across space and time, even though fine-scale variability may be driving local dynamics. Oncorhynchus mykiss is a globally introduced, facultatively anadromous salmonid that is experiencing demographic shifts characterized by greater proportions of population remaining in freshwater. The degree of niche overlap between age classes of O. mykiss in freshwater environments may dictate how resources are partitioned within populations. We conducted a meta-analysis of age-specific O....AuthorsLauren Diaz, Adam Duarte, Michael Beakes, James T. PetersonKeywordsSourceGlobal Ecology and Conservation. 49(11): e02770.Year2024
- Smallmouth bass populations have expanded far beyond their native range and these predatory fish present a pervasive threat to native aquatic species throughout North America. In the western United States, smallmouth bass are now present in river and reservoir habitats where Pacific salmon are found and are considered a potential threat to salmon recovery in many locations. We conducted a study to determine if smallmouth bass are expanding their range in the mainstem Willamette River, Oregon, and developed a model to assess habitat overlap between smallmouth bass and juvenile Chinook...AuthorsJames S. White, Tobias J. Kock, Brooke Penaluna, Stan Gregory, Josh Williams, Randy WildmanKeywordsSourceRiver Research and Applications. 40(2): 251-263.Year2024
- Rapid warming of high-latitude ecosystems is increasing microbial activity and accelerating the decomposition of permafrost soils. This proliferation of microbial energy could restructure high-latitude food webs and alter carbon cycling between above-ground and below-ground habitats. We used stable isotope analysis (δ13C) of amino acids to trace carbon flow through food webs exposed to warming and quantified changes in the assimilation of microbial carbon by Arctic tundra and boreal forest consumers. From 1990 to 2021, small mammals in boreal forests exhibited a significant reduction in...AuthorsPhilip Manlick, Nolan L. Perryman, Amanda M. Koltz, Joseph A. Cook, Seth D. NewsomeKeywordsSourceNature Climate Change. 14(2): 184-189.Year2024
- Biomass burning has shaped many of the ecosystems of the planet and for millennia humans have used it as a tool to manage the environment. When widespread fires occur, the health and daily lives of millions of people can be affected by the smoke leading to a range of health consequences such as respiratory issues, cardiovascular issues, and mortality. It is critical to include smoke and its consequences in atmospheric modeling systems to meet needs such as informing and protecting the public during smoke episodes. This chapter profiles many of the global and regional smoke prediction...AuthorsSusan O'Neill, Peng Xian, Johannes Flemming, Martin Cope, Alexander Baklanov, Sim Larkin, Joseph Vaughan, Daniel Tong, Rosie Howard, Roland Stull, Didier Davignon, Ravan Ahmadov, Mehmet Odman, John Innis, Merched Azzi, Christopher Gan, Radenko Pavlovic, Boon Ning Chew, Jeffrey S. Reid, Edward J. Hyer, Zak Kipling, Angela Benedetti, Peter R. Colarco, Arlindo Da Silva, Taichu Tanaka, Jeffrey McQueen, Partha Bhattacharjee, Jonathan Guth, Nicole Asencio, Oriol Jorba, Carlos Pérez García-Pando, Rostislav Kouznetsov, Mikhail Sofiev, Melissa E. Brooks, Jack Chen, Eric James, Fabienne Reisen, Alan Wain, Kerryn McTaggart, Angus MacNeilSourceIn: Loboda, Tatiana V.; French, Nancy H. F.; Puett, Robin C., eds. Landscape fire, smoke, and health: linking biomass burning emissions to human well-being. Hoboken, NJ: Wiley. Geophysical monograph series 280: 149-191. Chapter 9.Year2024
- Amphibians are among the most sensitive taxa to climate change, and species inhabiting arid and semiarid landscapes at the extremes of their range are especially vulnerable to drought. The Jack Creek, Oregon, USA, population of Oregon spotted frogs (Rana pretiosa) faces unique challenges because it occupies the highest elevation site in the species' extant range and one that has been transformed by loss of American beavers (Castor canadensis), which historically maintained open water. We evaluated the effects of drought mitigation (addition of excavated ponds) on relationships between...AuthorsJennifer C. Rowe, Christopher A. Pearl, Adam Duarte, Brome McCreary, Michael J. AdamsKeywordsSourceThe Journal of Wildlife Management. 88(1): e22496.Year2024
- Using a metaphor based on a historical debate between socialist and free-market economists, Salliou and Stritih (Environ. Res. Lett. 18 151001) advocate for decentralizing environmental management to harness emergent complexity and promote ecosystem health. Concerningly, however, their account seems to leave little room for top-down processes like government-led sustainability programs or centrally-planned conservation initiatives, the cornerstone of the post-2020 biodiversity framework. While we appreciate their call for humbleness, we offer a few words in defense of planning. Drawing on...AuthorsLogan Robert Bingham, Lucy Van Kleunen, Bohdan Kolisnyk, Olha Nahorna, Frederico Tupinambà-Simões, Keith M. Reynolds, Rasoul Yousefpour, Thomas KnokeKeywordsSourceEnvironmental Research Letters. 19(1): 018002.Year2024
- In 2014, the U.S. Department of Agriculture Forest Service Forest Inventory and Analysis program collected forest and tree measurements from 56 forest plots among three forest communities (lowland forest, mangrove, and strand forest) in the Republic of Palau, across Babeldaob, Koror, Peleliu, Angaur, and the Rock Islands. A total of 125 tree species and 196 dominant vascular plants were recorded, most in lowland tropical rainforest. Strand forest had the lowest stem density and highest basal area and volume per acre among forest communities. The Rock Islands had the highest basal area,...AuthorsJulian Dendy, Olaf Kuegler, Ashley Lehman, Pua MichaelKeywordsSourceGen. Tech. Rep. PNW-GTR-1022. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p.Year2024
- Quantifying the effects of environmental stressors on natural resources is problematic because of complex interactions among environmental factors that influence endpoints of interest. This complexity, coupled with data limitations, propagates uncertainty that can make it difficult to causally associate specific environmental stressors with injury endpoints. The Natural Resource Damage Assessment and Restoration (NRDAR) regulations under the Comprehensive Environmental Response, Compensation, and Liability Act and Oil Pollution Act aim to restore natural resources injured by oil spills and...AuthorsFreya E. Rowland, Christopher J. Kotalik, Bruce G. Marcot, Jo Ellen Hinck, David M. WaltersKeywordsSourceIntegrated Environmental Assessment and Management. 20(2): 562-573.Year2024
- Fire exclusion and past management have altered the composition, structure, and function of frequent-fire forests throughout western North America. In mixed-conifer forests of the California Sierra Nevada, fire exclusion has exacerbated the effects of drought and endemic bark beetles, resulting in extensive mortality of fire-adapted pine species. Thinning and prescribed fire are widely used in these forests to reduce fuels, moderate fire behavior, and restore ecosystems. Tree regeneration influences future forest composition and structure, and therefore future resilience to disturbances,...AuthorsHarold Zald, Carolina J. May, Andrew Gray, Malcolm P. North, Matthew D. HurteauSourceForest Ecology and Management. 551(2): 121531.Year2024