Treesearch
Displaying 1,341 - 1,350 of 64,641 Publications- 1. Pollinator species have declined globally during the last several decades due to a variety of factors, including habitat destruction and degradation, pesticides, disease and climate change.2. To examine the effects of climate change on pollinator distributions, I modelled summer occurrences of pollinator species from North America under current climate (i.e. years 1981-2010) and predicted potential climate space for current, past (20, 10 and 6 thousand years ago) and future (six projections during 2071-2100, with North American warming of 4.3°C-8.8°C) climates.3. Accuracies ranged in...AuthorsBrice HanberryKeywordsSourceEcological Solutions and Evidence. 6: e70025.Year2025
- Many ecosystems have been altered since European colonization, resulting in the loss of historical ecosystems along with information about historical ecosystems. Tree density estimation from historical land surveys with alignment to expert classifications of historical vegetation strengthen reconstructions of vegetation history through research triangulation. For the midwestern United States, we extended historical tree density estimates (≥12.7 cm in diameter) to contextualize expert classifications of vegetation types in Illinois and Minnesota, part of the historical Great Plains grassland...AuthorsBrice Hanberry, Charles M. Ruffner, Robert TatinaKeywordsSourceForests. 16(5): 748.Year2025
- One question about historical grassland ecosystems in the Great Plains region of central North America is the percentage of tree cover overall and near major rivers, compared to current tree cover. Here, I assessed tree cover in reconstructions of historical grasslands in the eastern Great Plains, isolating tree cover adjacent to major rivers, and then compared historical land cover to current (year 2019) land cover. As an extension to supply information for the entire Great Plains region, I modeled historical cover. For the 28 million ha extent of the eastern Great Plains, historical land...AuthorsBrice HanberryKeywordsSourceLand. 14(5): 935.Year2025
- Ecosystems are experiencing changing global patterns of mean annual precipitation (MAP) and enrichment with multiple nutrients that potentially colimit plant biomass production. In grasslands, mean aboveground plant biomass is closely related to MAP, but how this relationship changes after enrichment with multiple nutrients remains unclear. We hypothesized the global biomass-MAP relationship becomes steeper with an increasing number of added nutrients, with increases in steepness corresponding to the form of interaction among added nutrients and with increased mediation by changes in plant...AuthorsPhilip A. Fay, Laureano A. Gherardi, Laura Yahdjian, Peter B. Adler, Jonathan D. Bakker, Siddharth Bharath, Elizabeth T. Borer, W. Stanley Harpole, Erika Hersch-Green, Travis E. Huxman, Andrew S. MacDougall, Anita C. Risch, Eric W. Seabloom, Sumanta Bagchi, Isabel C. Barrio, Lori Biederman, Yvonne M. Buckley, Miguel N. Bugalho, Maria C. Caldeira, Jane A. Catford, QingQing Chen, Elsa E. Cleland, Scott L. Collins, Pedro Daleo, Christopher R. Dickman, Ian Donohue, Mary E. DuPre, Nico Eisenhauer, Anu Eskelinen, Nicole Hagenah, Yann Hautier, Robert W. Heckman, Ingibjorg S. Jonsdottir, Johannes M. H. Knops, Ramesh Laungani, Jason P. Martina, Rebecca L. McCulley, John W. Morgan, Harry Olde Venterink, Pablo L. Peri, Sally A. Power, Xavier Raynaud, Zhengwei Ren, Christiane Roscher, Melinda D. Smith, Marie Spohn, Carly J. Stevens, Michelle J. Tedder, Risto Virtanen, Glenda M. Wardley, George R. WheelerKeywordsSourcePNAS. 122(15): e2410748122.Year2025
- The leaf economics spectrum (LES) describes a suite of functional traits that consistently covary at large spatial and taxonomic scales. Despite its importance at these larger scales, few studies have examined the major drivers of intraspecific variation in the LES - phenotypic plasticity and standing genetic variation. ... Using experimental precipitation manipulations, we examined whether covariation among leaf economics traits and selection on leaf economics traits and trait combinations change as diverse genotypes of the widespread perennial grass Panicum virgatum are exposed to...AuthorsRobert W. Heckman, Michael J. Aspinwall, Samuel H. Taylor, David B. Lowry, Albina Khasanova, Jason E. Bonnette, Samsad Razzaque, Philip A. Fay, Thomas E. JuengerKeywordsSourceNew Phytologist. 246: 1583-1596.Year2025
- Whitebark pine (WBP) is a federally threatened species that is easily killed by fire but also dependent on fire. In WPB forests, prescribed burning and mechanical fuel treatments can reduce competition from shade-tolerant conifers, improve vigor of surviving WBP, create openings to foster regeneration of WPB seedlings, and mitigate the risk of large, high-severity wildfires. Burning in WBP stands requires careful planning to avoid killing reproductively mature, cone-bearing WBP, as many of these may have some level of genetic resistance to the exotic pathogen that causes white pine blister...AuthorsSharon M. HoodSourceMissoula, MT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Missoula Fire Sciences Laboratory. 6 p.Year2025
- Wildfire activity in the western United States has been on the rise since the mid-1980s, with longer, higher-risk fire seasons projected for the future. Prescribed burning mitigates the risk of extreme wildfire events, but such treatments are currently underutilized. Fire managers have cited lack of firefighter availability as a key barrier to prescribed burning. We use both principal component analysis (PCA) and logistic regression modeling methodologies to investigate whether or not (and if yes, under what conditions) personnel shortages on a given day are associated with lower odds of a...AuthorsAnna Kenig-Ziesler, Alison C. Cullen, Erin J. BelvalKeywordsSourceFire. 8: 167.Year2025
- Channel incision degrades ecosystems by lowering water tables and disconnecting floodplains. Stream restoration often aims to reverse these impacts. However, projects typically receive minimal monitoring, and treatment effectiveness has not been validated. We used trait-based analysis to evaluate whether two stream restoration techniques - beaver dam analogs (BDAs) and plug-and-ponds - raised water tables and increased overbank flooding, whether these altered environmental filters facilitated recovery of riparian plant communities, and how reassembly impacted the representation of traits...AuthorsKatelyn P. Driscoll, Laurel F. Martinez, Thomas F. TurnerKeywordsSourceRestoration Ecology. https://doi.org/10.1111/rec.70053.Year2025
- Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and nonindustrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found here: https://research.fs.usda.gov/programs/nrum .AuthorsUSDA Forest ServiceSourceUSDA Forest ServiceYear2025
- Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and nonindustrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found here: https://research.fs.usda.gov/programs/nrum .AuthorsUSDA Forest ServiceSourceUSDA Forest ServiceYear2025