Treesearch
Displaying 5,941 - 5,950 of 64,719 Publications- Ponderosa pine is an integral part of the forested landscape in the western US; it is the dominant tree species on landscapes that provide critical ecosystem services. Moderate drought tolerance allows it to occupy the transition zone between forests, open woodlands, and grasslands. Increases in stand density resulting from wildfire suppression, combined with lengthening, intensifying, and more frequent droughts have resulted in reduced tree vigor and stand health in dry ponderosa pine throughout its range. To address a management need for efficient landscape-level surveys of forest...AuthorsCharlie Schrader-Patton, Nancy E. Grulke, Craig BienzKeywordsSourceForests. 12(5): 612.Year2021
- Forest landscapes across western North America (wNA) have experienced extensive changes over the last two centuries, while climatic warming has become a global reality over the last four decades. Resulting interactions between historical increases in forested area and density and recent rapid warming, increasing insect mortality, and wildfire burned areas, are now leading to substantial abrupt landscape alterations. These outcomes are forcing forest planners and managers to identify strategies that can modify future outcomes that are ecologically and/or socially undesirable. Past forest...AuthorsPaul F. Hessburg, Susan J. Prichard, R. Keala Hagmann, Nicholas Povak, Frank K. LakeKeywordsSourceEcological Applications. 31(8): 54-71.Year2021
- Mesopredator release theory suggests that dominant predators suppress subordinate carnivores and ultimately shape community dynamics, but the assumption that subordinate species are only negatively affected ignores the possibility of facilitation through scavenging. We examined the interplay within a carnivore community consisting of cougars, coyotes, black bears, and bobcats using contemporaneous Global Positioning System telemetry data from 51 individuals; diet analysis from 972 DNA-metabarcoded scats; and data from 128 physical investigations of cougar kill sites, 28 of which were...AuthorsJoel Ruprecht, Charlotte E. Eriksson, Tavis D. Forrester, Derek B. Spitz, Darren A. Clark, Michael Wisdom, Marcus Bianco, Mary M. Rowland, Joshua B. Smith, Bruce K. Johnson, Taal LeviKeywordsSourceProceedings of the National Academy of Sciences. 118(35): e2101614118.Year2021
- Higher temperatures, lower snowpacks, drought, and extended dry periods have contributed to increased wildfire activity in recent decades. Climate change is expected to increase the frequency of large fires, the cumulative area burned, and fire suppression costs and risks in many areas of the USA. Fire regimes are likely to change due to interactions among climate, fire, and other stressors and disturbances; resulting in persistent changes in forest structure and function. The remainder of the twenty-first century will present substantial challenges, as natural resource managers are faced...AuthorsJames Vose, Rachel A. Loehman, Michael C. Stambaugh, David L. Peterson, Christopher J. Fettig, Jessica Halofsky, J. Kevin. Hiers, Robert E. KeaneKeywordsSourceIn: Greenberg, Cathryn H.; Collins, Beverly., eds. Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems, Managing Forest Ecosystems 39, 465-502 Chapter 12.Year2021
- Resilience of forest-dependent communities is an indicator of social sustainability. The goal of this indicator is to provide information on the extent to which communities that depend on forests for their well being; livelihoods; subsistence; quality of life; or cultural identity are able to respond and adapt to social and economic change using definitions and approaches that best reflect each country’s national experiences. The resultant methodology should enable reporting on the health of forest-dependent counties and trends over time.AuthorsChalisa Kallayanamitra, Philadelphia Wilkens, Natasha James, Gregory E. FreySourceWashington, DC: U.S. Department of Agriculture, Forest ServiceYear2021
- Occupancy models are often used to analyze long-term monitoring data to better understand how and why species redistribute across dynamic landscapes while accounting for incomplete capture. However, this approach requires replicate detection/non-detection data at a sample unit and many long-term monitoring programs lack temporal replicate surveys. In such cases, it has been suggested that surveying subunits within a larger sample unit may be an efficient substitution (i.e., space-for-time substitution). Still, the efficacy of fitting occupancy models using a space-for-time substitution has...AuthorsAdam Duarte, James T. PetersonKeywordsSourceEcology and Evolution. 11(23): 16727-16744.Year2021
- The onset of the global pandemic in 2020 significantly increased the complexity and uncertainty of wildfire incident response in the United States, and there was a clear role for decision support to inform and enhance coordination and communication efforts. Epidemiological modeling suggested the risk of COVID-19 outbreak at a traditional large fire camp could be substantial and supported the broadscale implementation of mitigations, and management of COVID-19 required expanding the response network to interface with entities such as local public health agencies, hospitals, and emergency...AuthorsMatthew P. Thompson, Erin J. Belval, Jake Dilliott, Jude BayhamKeywordsSourceFrontiers in Forests and Global ChangeYear2021
- Maximizing the effectiveness of fuel treatments at the landscape scale is a key research and management need given the inability to treat all areas at risk from wildfire, and there is a growing body of scientific literature assessing this need. We synthesized existing scientific literature on landscape-scale fuel treatment effectiveness in North American ecosystems through a systematic literature review. We identified 127 studies that addressed this topic using one of three approaches: simulation modeling, empirical analysis, or case studies. Of these 127 studies, most focused on forested...AuthorsTerrie B. Jain, Ilana Abrahamson, Nathaniel Anderson, Sharon M. Hood, Brice Hanberry, Francis F. Kilkenny, Shawn McKinney, Jeffrey E. Ott, Alexandra K. Urza, Jeanne C. Chambers, Michael A. Battaglia, J. Morgan Varner, Joseph J. O'BrienKeywordsSourceJFSP PROJECT ID: 19-S-01-2. Boise, ID: Joint Fire Sciences Program. 65 p.Year2021
- It is a critical time to reflect on the National Ecological Observatory Network (NEON) science to date as well as envision what research can be done right now with NEON (and other) data and what training is needed to enable a diverse user community. NEON became fully operational in May 2019 and has pivoted from planning and construction to operation and maintenance. In this overview, the history of and foundational thinking around NEON are discussed. A framework of open science is described with a discussion of how NEON can be situated as part of a larger data constellation - across...AuthorsAnika P. Staccone, Kaitlin Stack Whitney, Diane M. Stanitski, Eva Stricker, Thilina D. Surasinghe, Sarah K. Thomsen, Patrisse M. Vasek, Li Xiaolu, Di Yang, Rong Yu, Kelsey M. Yule, Kai Zhu, R. Chelsea Nagy, Jennifer K. Balch, Erin K. Bissell, Megan E. Cattau, Nancy F. Glenn, Benjamin S. Halpern, Nayani Ilangakoon, Brian Johnson, Maxwell B. Joseph, Sergio Marconi, Catherine O’Riordan, James Sanovia, Tyson L. Swetnam, William R. Travis, Leah A. Wasser, Elizabeth Woolner, Phoebe Zarnetske, Mujahid Abdulrahim, John Adler, Grenville Barnes, Kristina J. Bartowitz, Rachael E. Blake, Sara P. Bombaci, Julien Brun, Jacob D. Buchanan, K. Dana Chadwick, Melissa S. Chapman, Steven S. Chong, Y. Anny Chung, Jessica R. Corman, Jannelle Couret, Erika Crispo, Thomas G. Doak, Alison Donnelly, Katharyn A. Duffy, Kelly H. Dunning, Sandra M. Duran, Jennifer W. Edmonds, Dawson E. Fairbanks, Andrew J. Felton, Christopher R. Florian, Daniel Gann, Martha Gebhardt, Nathan S. Gill, Wendy K. Gram, Jessica S. Guo, Brian J. Harvey, Katherine R. Hayes, Matthew R. Helmus, Robert T. Hensley, Kelly L. Hondula, Tao Huang, Wiley J. Hundertmark, Virginia Iglesias, Pierre-Andre Jacinthe, Lara S. Jansen, Marta A. Jarzyna, Tiona M. Johnson, Katherine D. Jones, Megan A. Jones, Michael G. Just, Youssef O. Kaddoura, Aurora K. Kagawa-Vivani, Aleya Kaushik, Adrienne B. Keller, Katelyn B. S. King, Justin Kitzes, Michael J. Koontz, Paige V Kouba, Wai-Yin Kwan, Jalene M. LaMontagne, Elizabeth A. LaRue, Daijiang Li, Bonan Li, Yang Lin, Daniel Liptzin, William Alex Long, Adam L. Mahood, Samuel S. Malloy, Sparkle L. Malone, Joseph M. McGlinchy, Courtney L. Meier, Brett A. Melbourne, Nathan Mietkiewicz, Jeffrey T. Morisette, Moussa Moustapha, Chance Muscarella, John Musinsky, Ranjan Muthukrishnan, Kusum Naithani, Merrie Neely, Kari Norman, Stephanie M. Parker, Mariana Perez Rocha, Laís Petri, Colette A. Ramey, Sydne Record, Matthew W. Rossi, Michael SanClements, Victoria M. Scholl, Anna K. Schweiger, Bijan Seyednasrollah, Debjani Sihi, Kathleen R. Smith, Eric R. Sokol, Sarah A. Spaulding, Anna I Spiers, Lise A. St. DenisKeywordsSourceEcosphere. 12(12): e03833.Year2021
- The origins of the Luquillo Long Term Ecological Research Program are traced through four historical trends that still influence research activity in Puerto Rico’s Luquillo Mountains: (1) A history of identifying lands for protection and their designation for public uses; (2) A history of governmental and non-governmental institutions acting with the foresight to pursue scientific research for the benefit of economic development and the will to support scientific activity; (3) The uninterrupted progression of scientific activity through projects and programs that cumulatively developed a...AuthorsAriel E. LugoKeywordsYear2021