Treesearch
Displaying 1 - 10 of 63,154 PublicationsLong-term tree population growth can predict woody encroachment patterns
Formally Refereed
Recent increases in woody plant density in dryland ecosystems - or “woody encroachment”- around the world are often attributed to land-use changes such as increased livestock grazing and wildfire suppression or to global environmental trends (e.g., increasing atmospheric carbon dioxide). While such changes have undoubtedly impacted ecosystem structure and function, the evidence linking them to woody encroachment is mixed, and the underlying processes are not fully understood. To clarify the role of demographic processes in changing woody plant abundance, we conducted a meta-analysis of tree ag...AuthorsRobert K. Shriver, Elise Pletcher, Franco Biondi, Alexandra K. Urza, Peter J. WeisbergSourceProceedings of the National Academy of Science. 122(18): e2424096122.Year2025Fire directly affects tree carbon balance and indirectly affects hydraulic function: Consequences for post-fire mortality in two conifers
Formally Refereed
-- The mechanistic links between fire-caused injuries and post-fire tree mortality are poorly understood. Current hypotheses differentiate effects of fire on tree carbon balance and hydraulic function, yet critical uncertainties remain about the relative importance of each and how they interact. -- We utilize two prescribed burns with Douglas-fir and ponderosa pine to examine: the relative evidence for fire-caused changes in hydraulic function and carbon dynamics, and how such impacts relate to fire injuries; which impacts most likely lead to post-fire mortality; and how these impacts vary by ...AuthorsCharlotte C. Reed, Sharon M. Hood, Aaron R. Ramirez, Anna SalaKeywordsSourceNew Phytologist. https://doi.org/10.1111/nph.70212.Year2025- Survival of perennial grasses between wet seasons depends on the maintenance of belowground buds and root systems. Belowground bud and root traits were evaluated in three perennial grasses (Pennisetum mezianum (Leeke), Digitaria macroblephara (Hack. ex Schinz) Paoli, and Themeda triandra (Forssk.) in semi-arid Kenyan rangelands during the short dry season. Bud number remained stablae while bud size declined for all three grass species during the study period. Non-structural carbohydrates in roots and percent root dry matter had increased in all three species by the end of the dry season. Penni...AuthorsEdwin M. Kakusu, R.N. Kinuthia, Jacqueline P. Ott, O.K. KoechSourceJournal of Range and Forage Science. 42: 1-12.Year2025
- Myrtle rust caused by Austropuccinia psidii is one of the most important diseases affecting eucalypts (Eucalyptus spp. and Corymbia spp.) in Brazil. Asexual spores of the myrtle pathogen, urediniospores, give rise to infection of young tissues (e.g., leaf, stem, flower and fruit) of the myrtaceous hosts. Symptoms of myrtle rust disease are necrosis and leaf deformation, and death of the apical shoots, whereas the primary diagnostic signs of myrtle rust disease are yellow urediniospores, which are formed by the myrtle rust pathogen on the infected organs. Occasionally, teliospores are formed in...AuthorsRosiane F. Almeida, Joao Vitor P. V Ferreira, Vitor M. Sousa, Rafael F. Alfenas, Ned B. Klopfenstein, Acelino C. AlfenasKeywordsSourceForest Pathology. 55: e70023.Year2025
- Fuels treatments intended to reduce fuel loads and improve forest health on public lands offer one way to reduce wildfire hazards in the wildland-urban interface (WUI), where the natural and built environments meet. However, for fuels treatment implementation to be successful, it must comply with regulatory and scientific standards and be supported by local communities, as lack of acceptance can lead to alterations, delays, or abandonment. To foster support, public land managers can engage directly with residents in communities near treatment areas through various communication channels or eng...AuthorsKelly Wallace, Hannah Brenkert-Smith, Patricia A. Champ, James R. Meldrum, Grant Webster, Christine Taniguchi, Julia B. Goolsby, Colleen Donovan, Carolyn Wagner, Christopher M. Barth, Josh Kuehn, Suzanne WittenbrinkKeywordsSourceForest Policy and Economics. 176: 103537.Year2025
Exploring urban vegetation type and defensible space’s role in building loss during wildfire-driven events in California
Formally Refereed
The role of building characteristics and survival during wildfires are well studied. Less so is the role of urban vegetation type, condition, and location on building loss in fire events. We mapped and statistically modeled parcel-scale urban vegetation characteristics across different Defensible Space Buffers (DSBs) and their role in predicting building loss in shrub and forest dominated urban ecosystems. Using 3.0 m resolution PlanetScope imagery, geospatial data, and eCognition we mapped parcel-scale vegetation types and building characteristics in fire affected neighborhoods in Ventura and...AuthorsFrancisco Escobedo, Kamini Yadav, Onofrio Cappelluti, Nels JohnsonKeywordsSourceLandscape and Urban Planning. 262(4): 105421.Year2025- This report traces the flow of timber harvested in Colorado during calendar year 2020, describes the composition and operations of the State’s primary forest products industry, and quantifies volumes and uses of wood fiber. Recent wood products industry changes are discussed as well as trends in timber harvest, production, and sales of primary wood products.AuthorsBenjamin T. Irey, Lucas Townsend, Thale Dillon, Samuel G. Scott, Eric A. Simmons, Todd A. Morgan, John D. ShawKeywordsSourceResour. Bull. RMRS-RB-41. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 30 p. https://doi.org/10.2737/RMRS-RB-41Year2025
- 1 - Resource managers are interested in whether thinning second-growth forests may be a viable restoration strategy for stream and riparian habitats, but may be concerned about the potential impacts that increases in stream temperature associated with riparian thinning treatments may have on cold-water salmonid fishes. 2 - We evaluated the effects of riparian forest thinning on resident populations of coastal cutthroat trout (Oncorhynchus clarkii clarkii) in coastal northern California catchments using a manipulative field experiment with a replicated before-after-control-impact design (pre-...AuthorsDavid A. Roon, Jason B. Dunham, Joseph R. Benjamin, Bret C. Harvey, J. Ryan. BellmoreKeywordsSourceFreshwater Biology. 70(5): e70040.Year2025
- Technology for the acoustic detection of animals has advanced rapidly over the past few decades. Due to ease of use, consistency, and safety, acoustic methods are particularly useful for science applications that engage the public. In this study, we evaluated the technological and educational trade-offs between 2 acoustic bat detectors in a participatory science application along the Colorado River in the Grand Canyon, Arizona. Both devices were deployed simultaneously by commercial river guides in parallel with sampling insect prey for 1 h at dusk on 48 dates between April and October 2022. T...AuthorsAnya Metcalfe, Theodore J. Weller, Carol A. Fritzinger, Brandon P. Holton, Theodore A. Kennedy, Chrissy HowellKeywordsSourceJournal of North American Bat Research. Special Issue 1 (2025): 89–99.Year2025
To diversify or not to diversify: a preliminary report on farmers’ perspectives on diversification in the U.S. Midwest
Formally Refereed
Diversifying the simplified landscape of corn and soybeans in the Midwest is an emerging priority in both the public and private sectors to reap a suite of climate, social, agronomic, and economic benefits. However, little research has documented the perspectives of farmers, the primary stakeholders in diversification efforts. This preliminary report uses newly collected survey data (n = 725) from farmers in the states of Illinois, Indiana, and Iowa to provide descriptive statistics and tests to understand what farmers in the region think about agricultural diversification, including their per...AuthorsLauren Asprooth, J. Gordon Arbuckle, Rebecca Traldi, Sarah P. Church, Kristin Floress, Benjamin M. Gramig, Andrew J. Margenot, Elizabeth T. Maynard, Aaron W. Thompson, Ariana P. Torres, Emily M. Usher, Ishraq Awashra, Katherine Pivaral, Finnleigh S. Woodings, Linda S. ProkopyKeywordsSourceRenewable Agriculture and Food SystemsYear2025