Treesearch
Displaying 1 - 10 of 63,171 Publications- Valued for timber and wildlife, oaks (Quercus spp.) face many regeneration challenges in the eastern United States. Decades of fire suppression have produced favorable conditions for tree species that grow well in humid climates, such as maples, and less favorable conditions for species that thrive under drier conditions, such as oaks. The Hoosier National Forest in southern Indiana noticed a lack of oak advance regeneration in the 2010s, when long-term research showed that clearcut harvests performed in the 1980s, which were intended to regenerate oak, were now more dominated by red maple, tu...AuthorsJenna Zukswert, John Kabrick, Daniel DeyKeywordsSourceFS; Rooted in ResearchYear2025
- Hybridization between exotic and native species can lead to negative ecological and economic consequences. The invasive winter moth (WM), Operophtera brumata, uses the same sex-attractant pheromone and mates and produces fertile offspring with a native congener the Bruce spanworm (BSW), O. bruceata, and a stable hybrid zone has formed where their ranges overlap in the northeastern United States. However, the fact that the two species have not merged, despite seasonal overlap of flight, suggests that one or more pre- or post-mating barriers to hybridization might therefore exist. Here, we evalu...AuthorsJennifer Chandler, Joseph S. Elkinton, George H. Boettner, Jeremy C. AndersenSourceJournal of Insect BehaviorYear2025
- Historically, the prices of softwood timber and lumber have shown strong correlations within their supply chain. However, since the 2008 financial crisis, the gap between these prices has widened, a trend further exacerbated during and after the COVID-19 pandemic. This study examines the impact of various economic shocks on this expanding price gap from 1999 to 2023. Using a Markov Switching Autoregressive model and incorporating variables such as housing starts, lumber futures, mortgage rates, Canadian softwood lumber export, and standing inventory, we identify periods of divergence and stabi...AuthorsSabhyata Lamichhane, Rajan Parajuli, Jesse D. Henderson, Bruno Kanieski da Silva, Shaun M. TangerSourceForest ScienceYear2025
A female sterilization method for use in field-based behavioral studies of the invasive Asian longhorned beetle (Anoplophora glabripennis)
Formally Refereed
Asian longhorned beetle (Anoplophora glabripennis Motschulsky), a wood borer (Coleoptera: Cerambycidae) native to China, has been unintentionally and repeatedly introduced to North American and European landscapes as a stow-away in the wood packing material commonly used in international trade. Asian longhorned beetle causes extensive damage and mortality in multiple deciduous tree species and in response, countries in both North America and Europe have adopted policies of eradication. Models that integrate patterns of Asian longhorned beetle dispersal with records of infested trees are critic...AuthorsJennifer Chandler, Robert Talbot Trotter, Brian AukemaKeywordsSourceJournal of Insect ScienceYear2025- ArrayAuthorsRabiu Olatinwo, Wood JohnsonSourceOlatinwo, Rabiu; Johnson, Wood. 2025. Application of Forest Inventory and Analysis data and site-specific factors in understanding flowering dogwood decline in the Southeastern United States. In: Conkling, B.L.; Pandit, K., eds. Forest Health Monitoring: Evaluation Monitoring project summaries 2023. Gen. Tech. Rep. WO-105a. Washington, DC: U.S. Department of Agriculture, Forest Service. 41–51. Chapter 6. https://doi.org/10.2737/WO-GTR-105a-Chap6.Year2025
- ArrayAuthorsLance A. Vickers, Benjamin O. Knapp, Daniel C. Dey, Lauren S.P. KnappSourceVickers, Lance A.; Knapp, Benjamin O.; Dey, Daniel C.; Knapp, Lauren S.P. 2025. Do forest health issues in eastern upland oak forests affect oak regeneration and recruitment. In: Conkling, B.L.; Pandit, K., eds. Forest Health Monitoring: Evaluation Monitoring project summaries 2023. Gen. Tech. Rep. WO-105a. Washington, DC: U.S. Department of Agriculture, Forest Service. 17–24. Chapter 3.Year2025
- ArrayAuthorsB.L. Conkling, K. PanditSourceConkling, B.L.; Pandit, K. 2025. Introduction. In: Conkling, B.L.; Pandit, K., eds. Forest Health Monitoring: Evaluation Monitoring project summaries 2023. Gen. Tech. Rep. WO-105a.Washington, DC: U.S. Department of Agriculture, Forest Service: 5–7. Chapter 1.Year2025
- ArrayAuthorsLance A. Vickers, Alejandro A. Royo, Susan L. Stout, Todd Ristau, William K. Oldland, Benjamin O. Knapp, Lauren S.P. Knapp, Andrea HilleSourceVickers, Lance A.; Royo, Alejandro A.; Stout, Susan L.; Ristau, Todd; Oldland, William K.; Knapp, Benjamin O.; Knapp, Lauren S.P.; Hille, Andrea. 2025. Evaluating the extent and severity of black cherry regeneration declines in eastern forests and exploring potential causes. In: Conkling, B.L.; Pandit, K., eds. Forest Health Monitoring: Evaluation Monitoring project summaries 2023. Gen. Tech. Rep. WO-105a. Washington, DC: U.S. Department of Agriculture, Forest Service. 9–16. Chapter 2.Year2025
- Nonnative species are a major threat to the composition and functioning of global forests (Parry and Teale 2011). Impacts of nonnative tree-feeding insects often occur in concert with impacts of native insects, yet interactive effects between nonnatives and natives on tree performance are poorly understood and have rarely been investigated. Nonnative insects could make trees more or less susceptible to native insects, depending on the magnitude of impacts of nonnatives on tree defense, vigor, and host quality.AuthorsThomas Kolb, Monica Gaylord, Amanda Grady, Matt Hansen, Ann Lynch, Joel McMillin, Justin RunyonKeywordsSourceKolb, Thomas; Gaylord, Monica; Grady, Amanda; Hansen, Matt; Lynch, Ann; McMillin, Joel; Runyon, Justin. 2025. Does spruce aphid defoliation alter Engelmann spruce resistance to spruce beetle? In: Conkling, B.L.; Pandit, K., eds. Forest Health Monitoring: Evaluation Monitoring project summaries 2023. Gen. Tech. Rep. WO-105a. Washington, DC: U.S. Department of Agriculture, Forest Service. 81–87. Chapter 10.Year2025
- Native bee populations are declining worldwide, threatening both natural ecosystems and agriculture as these insects pollinate about 80 percent of all flowering plants. Research at the Starkey Experimental Forest and Range, managed by the U.S. Department of Agriculture, Forest Service, points to strategies for supporting native bees while maintaining grazing and timber production. Scientists with the Forest Service’s Pacific Northwest Research Station and Oregon State University identified more than 300 native bee species at the study site in eastern Oregon. They found that bees rely heavily ...AuthorsSylvia Kantor, Mary Rowland, Sandy DeBanoKeywordsSourceScience Findings 273. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p.Year2025