Treesearch
Displaying 1 - 10 of 61,996 Publications- The European spruce bark beetle, Ips typographus (L.), is the most important forest pest in Europe due to the profound impacts of periodic outbreaks on ecosystem goods and services. Herein, we evaluated the responses of I. typographus to different doses of verbenone (SPLAT® Verb, 10% (−)-verbenone by weight; ISCA Inc., Riverside, CA, USA) in traps baited with its aggregation pheromones. Results are based on 1,492,289 I. typographus collected in five experiments over 3 years. SPLAT® Verb inhibited the response of I. typographus to baited traps out to 14 m from the point of release (dollop) and ...AuthorsHelge Löcken, Tobias Frühbrodt, Baoguo Du, Christopher J. Fettig, Peter H. W. Biedermann, Jürgen Kreuzwieser, Tim Burzlaff, Horst DelbKeywordsSourceJournal of Applied Entomology. 64(2): 98Year2024
- Spruce beetle, Dendroctonus rufipennis (Kirby) (Coleoptera: Curculionidae), is the most destructive pest of mature spruce (Picea) in western North America. Recent outbreaks in Alaska and other western US states highlight the need for tools to protect Picea from D. rufipennis. The primary antiaggregation pheromone of D. rufipennis (3-methylcyclohex-2-en-1-one, MCH) and various combinations of potential repellents (1-octen-3-ol, exo-brevicomin, endo-brevicomin, ipsdienol, ipsenol, limonene, and verbenone) were tested for their ability to disrupt the response of D. rufipennis to attractant-baited...AuthorsJackson Audley, Christopher Fettig, Jason Moan, Jessie Moan, Steve Swenson, A Steven Munson, Leif Mortenson, Darren Blackford, Elizabeth Graham, Agenor Mafra-NetoKeywordsSourceJournal of Economic Entomology. 115(1): 2772.Year2024
- Floral traits such as color, scent, and nectar often vary substantially within plant species. However, when it comes to pollen chemistry, the scale of intraspecific variation is largely unknown, as are its potential abiotic drivers. Bees collect pollen as their primary source of protein and lipids, and interspecific variation in pollen quality influences bee foraging preferences. Understanding the scale of intraspecific spatiotemporal variation in pollen macronutrient content could further uncover the nutritional basis of many plant-pollinator interactions influenced by geographic and climatic...AuthorsAnthony D. Vaudo, Eva Lin, Jillian A. Luthy, Anne S. Leonard, Eliza M. GramesKeywordsSourceEvolutionary Ecology. https://doi.org/10.1007/s10682-024-10313-4.Year2024
- Transhumance is a form of extensive livestock production that involves seasonal movements among ecological zones or landscape types. Rangeland-based transhumance constitutes an important social and economic relationship to nature in many regions of the world, including across the Western US. However, social and ecological drivers of change are reshaping transhumant practices, and managers must adapt to increased demands for public rangeland use. Specifically, concerns for wildlife conservation have led to reduced access to seasonal public lands grazing for western US livestock producers. To un...AuthorsHailey Wilmer, J. Bret Taylor, Daniel Macon, Matthew C. Reeves, Carrie S. Wilson, Jacalyn Mara Beck, Nicole K. StrongKeywordsSourceAgriculture and Human Values. https://doi.org/10.1007/s10460-024-10591-2.Year2024
- Historical and contemporary policies and practices, including the suppression of lightning-ignited fires and the removal of intentional fires ignited by Indigenous peoples, have resulted in over a century of fire exclusion across many of the USA’s landscapes. Within many designated wilderness areas, this intentional exclusion of fire has clearly altered ecological processes and thus constitutes a fundamental and ubiquitous act of trammeling. Through a framework that recognizes four orders of trammeling, we demonstrate the substantial, long-term, and negative effects of fire exclusion on the na...AuthorsClare E. Boerigter, Sean A. Parks, Jonathan W. Long, Jonathan D. Coop, Melanie Armstrong, Don L. HankinsKeywordsSourceFire Ecology. 20: 76.Year2024
- AuthorsJonathan W. Lopez, Carla L. Atkinson, Angela K. Burrow, Garrett W. Hopper, Wendell R. HaagSourceEcosphereYear2024
- Background Fire models have used pyrolysis data from oxidising and non-oxidising environments for flaming combustion. In wildland fires pyrolysis, flaming and smouldering combustion typically occur in an oxidising environment (the atmosphere). Aims Using compositional data analysis methods, determine if the composition of pyrolysis gases measured in non-oxidising and ambient (oxidising) atmospheric conditions were similar. Methods Permanent gases and tars were measured in a fuel-rich (non-oxidising) environment in a flat flame burner (FFB). Permanent and light hydrocarbon gases were meas...AuthorsDavid R. Weise, Thomas H. Fletcher, Timothy J. Johnson, Wei Min Hao, Mark Dietenberger, Marko Princevac, Bret W. Butler, Sara S. McAllister, Joseph O’Brien, E. Louise Loudermilk, Roger D. Ottmar, Andrew Hudak, Akira Kato, Babak Shotorban, Shankar Mahalingam, Tanya L. Myers, Javier Palarea-Albaladejo, Stephen P. BakerKeywordsSourceInternational Journal of Wildland Fire. 33(9): 375Year2024
- We investigated the light-absorption properties ofbrown carbon (BrC) as part of the Georgia Wildland-FireSimulation Experiment. We constructed fuel beds representativeof three ecoregions in the Southeastern U.S. and varied the fuel-bed moisture content to simulate either prescribed fires ordrought-induced wildfires. Based on decreasing fire radiativeenergy normalized by fuel-bed mass loading (FREnorm), thecombustion conditions were grouped into wildfire (Wild),prescribed fire (Rx), and wildfire involving duff ignition (Wild-Duff). The emitted BrC ranged from weakly absorbing (WildDuff)to moder...AuthorsChase K. Glenn, Omar El Hajj, Zachary McQueen, Ryan P. Poland, Robert Penland, Elijah T. Roberts, Jonathan H. Choi, Bin Bai, Nara Shin, Anita Anosike, Kruthika V Kumar, Muhammad Isa Abdurrahman, Pengfei Liu, I. Jonathan Amster, Geoffrey D. Smith, Steven Flanagan, Mac A. Callaham, Eva L. Loudermilk, Joseph J. O’Brien, Rawad SalehKeywordsSourceACS ES&T AirYear2024
- We report measurements of the absorption Ångström exponent (AAE) and single scattering albedo (SSA) of biomass burning aerosol from the combustion of fuel beds representing three eco-regions of the Southeast U.S. (Piedmont, Coastal Plain, and Blue Ridge Mountains) with moisture content representative of wildfires and prescribed fires. We find a strong correlation between the AAE and SSA for both simulated wildfires (low fuel moisture) and prescribed fires (higher fuel moisture). For wildfires, the AAE and SSA are strongly dependent on the eco-region of the fuel bed and span a much wider range ...AuthorsZachary C. McQueen, Ryan P. Poland, Chase K. Glenn, Omar El Hajj, Robert Penland, Anita Anosike, Kruthika V Kumar, Joseph J. O’Brien, Rawad Saleh, Geoffrey D. SmithKeywordsSourceACS ES&T AirYear2024
- The global biodiversity crisis affects species across all continents and taxonomic groups. Direct destruction of species and habitats has been a primary driver of declines, though climate change and associated sea level rise are expected to accelerate loss. The flora of low-lying, relatively isolated islands is especially threatened when high species richness intersects with vulnerability to sea level rise. The Florida Keys represent a hotspot for cactus diversity in the eastern United States, with eight species recognized, three of which are endemic to the islands. Though not endemic to the i...AuthorsJennifer Possley, James J. Lange, Alan R. Franck, George D. Gann, Trudy Wilson, Susan Kolterman, Janice Duquesnel, Joseph O’BrienKeywordsSourceJournal of the Botanical Research Institute of TexasYear2024