Treesearch
Displaying 5,831 - 5,840 of 64,753 Publications- Fast growing Eucalyptus grandis W. Hill ex Maiden (EG), E. amplifolia Naudin (EA), Corymbia torelliana (F.Muell.) K.D.Hill & L.A.S.Johnson (CT), and Populus deltoides W.Bartram ex Marshall (PD) may be deployed in Short Rotation Woody Crop (SRWC) systems in the lower Southeastern USA, especially in Florida. To evaluate these species for possible use as medium density fiberboard (MDF) and other composites, 2.5 m logs of three EG clones, three PD clones, six EA progenies, four CT trees, and one P. tremuloides Michx. (PT) tree from northern Wisconsin as a control were characterized for basic...AuthorsDonald L. Rockwood, Jerrold Winandy, Neil GribbinsKeywordsSourceForests journalYear2022
- Energy crops grown on marginal lands offer an alternative supply of renewable resources while avoiding competition with food crops and supporting feed crops. To sustainably grow energy crops, the economic and environmental impacts of various crop management practices such as the adoption of cover crops, fertilization rates, harvesting methods and its end use applications for animal feed or biofuels should be investigated. In this study, we investigated the life cycle analysis (LCA) and economic evaluation of growing two energy crops (energy cane, and napier grass) on the marginal lands...AuthorsKamalakanta Sahoo, Poonam Khatri, Akanksha Kanwar, Hari P. Singh, Sudhagar Mani, Richard Bergman, Troy Runge, Deepak KumarKeywordsSourceIndustrial Crops and Products journalYear2022
- The red turpentine beetle (Dendroctonus valens) is native to North America and attacks stressed, dying, or recently dead pine trees, especially fire-injured ponderosa pine. State and federal agencies use baited traps to detect, monitor, and manage populations of native and nonnative insect species. Trapping efforts are labor intensive, and the lures themselves can be relatively expensive, so it’s important to use effective lures.Researchers Rick Kelsey and Doug Westlind, with the USDA Forest Service Pacific Northwest Research Station, have finetuned a more effective lure recipe to trap red...AuthorsAndrea Watts, Rick G. Kelsey, Doug WestlindSourceScience Findings 246. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p.Year2022
- Shifting range limits are predicted for many species as the climate warms. However, the rapid pace of climate change will challenge the natural dispersal capacity of long-lived, sessile organisms such as forest trees. Adaptive responses of populations will, therefore, depend on levels of genetic variation and plasticity for climate-responsive traits, which likely vary across the range due to expansion history and current patterns of selection. Here, we study levels of genetic and plastic variation for phenology and growth traits in populations of red spruce (Picea rubens), from the range...AuthorsAnoob Prakash, Sonia DeYoung, Susanne Lachmuth, Jacquelyne Adams, Kurt Johnsen, John Butnor, David M. Nelson, Matthew C. Fitzpatrick, Stephen R. KellerSourcePhilosophical Transactions of the Royal Society B: Biological SciencesYear2022
- Current LiDAR-based methods for detecting forest change use a host of statistically selected variables which typically lack a biological link with the characteristics of the ecosystem. Consensus of the literature indicates that many authors use LiDAR to derive ecosystem morphological traits (EMTs)—namely, vegetation height, vegetation cover, and vertical structural complexity—to identify small-scale changes in forest ecosystems. Here, we provide a conceptual, biological model for predicting forest aboveground biomass (AGB) change based on EMTs. We show that through use of a multitemporal...AuthorsJaz Stoddart, Danilo Roberti Alves de Almeida, Carlos Alberto Silva, Eric Bastos Görgens, Michael Keller, Ruben ValbuenaKeywordsSourceRemote SensingYear2022
- 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