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Displaying 6,221 - 6,230 of 65,165 Publications- Quantifying fuel load over large areas is essential to support integrated fire management initiatives in fire-prone regions to preserve carbon stock, biodiversity and ecosystem functioning. It also allows a better understanding of global climate regulation as a potential carbon sink or source. Large area assessments usually require data from spaceborne remote sensors, but most of them cannot measure the vertical variability of vegetation structure, which is required for accurately measuring fuel loads and defining management interventions. The recently launched NASA’s Global Ecosystem...AuthorsRodrigo Vieira Leite, Carlos Alberto Silva, Eben North Broadbent, Cibele Hummel do Amaral, Veraldo Liesenberg, Danilo Roberti Alves de Almeida, Midhun Mohan, Sergio Godinho, Adrian Cardil, Caio Hamamura, Bruno Lopes de Faria, Pedro H. S. Brancalion, Andre Hirsch, Gustavo Eduardo Marcatti, Ana Paula Dalla Corte, Angelica Maria Almeyda Zambrano, Maira Beatriz Teixeira da Costa, Eraldo Aparecido Trondoli Matricardi, Anne Laura da Silva, Lucas Ruggeri Re Y. Goya, Ruben Valbuena, Bruno Araujo Furtado de Mendonca, Celso H. L. Silva Junior, Luiz E. O. C. Aragao, Mariano García, Jingjing Liang, Trina Merrick, Andrew T. Hudak, Jingfeng Xiao, Steven Hancock, Laura Duncason, Matheus Pinheiro Ferreira, Denis Valle, Sassan Saatchi, Carine KlaubergKeywordsSourceRemote Sensing of Environment. 268: 112764.Year2022
- Airborne lidar is often used to calculate forest metrics about trees, but it may also provide a wealth of information about the space between trees. Forest canopy gaps are defined by the absence of vegetative structure and serve important roles for wildlife, such as facilitating animal movement. Forest canopy gaps also occur around snags, keystone structures that provide important substrates to wildlife species for breeding, roosting and foraging.AuthorsJessica M. Stitt, Andrew T. Hudak, Carlos A. Silva, Lee A. Vierling, Kerri T. VierlingKeywordsSourceMethods in Ecology Evolution. 13: 473-484.Year2022
- The Southwest Oregon Adaptation Partnership (SWOAP) is a science-management partnership with the U.S. Department of Agriculture, Forest Service (U.S. Forest Service)—Rogue River-Siskiyou and Umpqua National Forests, Pacific Northwest and Rocky Mountain Research Stations, and Pacific Northwest Region; U.S. Department of the Interior—Bureau of Land Management Medford and Roseburg Districts, and National Park Service Oregon Caves National Monument and Preserve; and University of Washington. This science-management partnership assessed the vulnerability of natural resources to climate change...AuthorsJessica Halofsky, David L. Peterson, Rebecca A. GravenmierKeywordsSourceGen. Tech. Rep. PNW-GTR-995. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 445 p.Year2022
- Land development, which typically results from the conversion of lands previously in agricultural and forest uses, is one of the most fundamental ways in which humans impact the natural environment. We study the remarkable decline in land development rates across the conterminous United States over the period 2000–2015, which occurred after development rates had grown rapidly over the last two decades of the 20th century. Despite relatively constant population growth since 1980, we find that the current annual rate of land development has declined consistently across several stratifications...AuthorsDaniel Bigelow, David Lewis, Christopher MihiarKeywordsSourceEnvironmental Research LettersYear2022
- Biochar produced from low-value forest biomass can provide substantial benefits to ecosystems and mitigate climate change-induced risks such as forest fires. Forest residues from restoration activities and timber harvest and biochar itself are bulky and thus incur high logistic costs, so are considered major bottlenecks for the commercialization of the biochar industry. The objectives of this study were to assess the environmental footprints and techno-economic feasibility of converting forest residues in Pacific Northwest United States into biochar pellets using portable systems followed...AuthorsRichard Bergman, Kamalakanta Sahoo, Karl Englund, Seyed Hashem Mousavi AvvalKeywordsSourceEnergies journalYear2022
- Fire suppression and the loss of western white pine (WWP) have made northern Rocky Mountain moist mixed-conifer forests less disturbance resilient. Although managers are installing hundreds of plantations, most of these plantations have not experienced wildfire since establishment. In 2015, wildfires burned through 100 WWP plantations in this region, providing an opportunity to evaluate the effects of wildfires on sapling survival. A Weibull distribution approach was used to characterize the variation of fire severity pixels, as indicated by the differenced normalized burn ratio. The...AuthorsTerrie B. Jain, Andrew S. Nelson, Benjamin C. Bright, John C. Byrne, Andrew T. HudakKeywordsSourceJournal of Forestry. 2022: 22-36.Year2022
- This study estimated homeowner's willingness to pay for public and private fuel reduction programs in wildland urban interface areas using a choice experiment implemented in California. A multinomial logit (MNL) model was estimated and indicated that homeowners living in subjectively perceived high-risk areas would pay for new wildfire risk mitigation programs. This suggests the importance of risk perceptions in adoption of risk mitigation behavior. Prior research has indicated that demographic factors influence risk perceptions. Therefore, the heterogeneity of homeowner preferences...AuthorsJosé J. Sánchez, Tom Holmes, John Loomis, Armando Gonzalez-CabanKeywordsSourceInternational Journal of Disaster Risk Reduction. 68(6): 102696.Year2022
- Adaptation is key to minimizing heatwaves' societal burden; however, our understanding of adaptation capacity across the socioeconomic spectrum is incomplete. We demonstrate that observed heatwave trends in the past four decades were most pronounced in the lowest-quartile income region of the world resulting in >40% higher exposure from 2010 to 2019 compared to the highest-quartile income region. Lower-income regions have reduced adaptative capacity to warming, which compounds the impacts of higher heatwave exposure. We also show that individual contiguous heatwaves engulfed up to 2.5-fold...AuthorsMohammad Reza Alizadeh, John T. Abatzoglou, Jan F. Adamowski, Jeffrey P. Prestemon, Bhaskar Chittoori, Ata Akbari Asanjan, Mojtaba SadeghSourceEarth's FutureYear2022
- Parcel-level risk (PLR) describes how wildfire risk varies from home to home based on characteristics that relate to likely fire behavior, the susceptibility of homes to fire, and the ability of firefighters to safely access properties. Here, we describe the WiRe Rapid Assessment (RA), a parcel-level rapid wildfire risk assessment tool designed to evaluate PLR with a small set of measures for all homes in a community. We investigate the relationship between 2019WiRe RA data collected in the Columbine Lake community in Grand County, Colorado, and whether assessed homes were destroyed in the...AuthorsJames R. Meldrum, Christopher M. Barth, Julia B. Goolsby, Schelly K. Olson, Adam C. Gosey, James (Brad) White, Hannah Brenkert-Smith, Patricia A. Champ, Jamie GomezKeywordsSourceFire. 5: 24.Year2022
- To understand the influence of competition indices and post-thinning effects in predicting individual tree mortality, we developed two models, one without the effect of thinning and another, with the effect of thinning for naturally occurring even-aged natural shortleaf pine (Pinus echinata Mill.) stands in the Ozark and Ouachita National Forests in Oklahoma and Arkansas, USA. Over the period of 25 years, six re-measurements of an individual tree from each plot were collected between 1985 and 2014. The logistic function was used to model the probability of mortality for which the binary...AuthorsPradip Saud, Thomas B. Lynch, James M. Guldin, Sudip ShresthaKeywordsSourceForestsYear2022