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Displaying 13,951 - 13,960 of 65,176 Publications- Monitoring and evaluation are central to ensuring that innovative, multi-scale, and interdisciplinary approaches to sustainability are effective. The development of relevant indicators for local sustainable management outcomes, and the ability to link these to broader national and international policy targets, are key challenges for resource managers, policymakers, and scientists. Sets of indicators that capture both ecological and social-cultural factors, and the feedbacks between them, can underpin cross-scale linkages that help bridge local and global scale initiatives to increase...AuthorsEleanor J. Sterling, Christopher Filardi, Anne Toomey, Amanda Sigouin, Erin Betley, Nadav Gazit, Jennifer Newell, Simon Albert, Diana Alvira, Nadia Bergamini, Mary Blair, David Boseto, Kate Burrows, Nora Bynum, Sophie Caillon, Jennifer E. Caselle, Joachim Claudet, Georgina Cullman, Rachel Dacks, Pablo B. Eyzaguirre, Steven Gray, James Herrera, Peter Kenilorea, Kealohanuiopuna Kinney, Natalie Kurashima, Suzanne Macey, Cynthia Malone, Senoveva Mauli, Joe McCarter, Heather McMillen, Pua’ala Pascua, Patrick Pikacha, Ana L. Porzecanski, Pascale de Robert, Matthieu Salpeteur, Myknee Sirikolo, Mark H. Stege, Kristina Stege, Tamara Ticktin, Ron Vave, Alaka Wali, Paige West, Kawika B. Winter, Stacy D. JupiterKeywordsSourceNature Ecology & EvolutionYear2017
- Laurel wilt kills members of the Lauraceae plant family in the southeastern United States. It is caused by Raffaelea lauricola T.C. Harr., Fraedrich and Aghayeva, a nutritional fungal symbiont of an invasive Asian ambrosia beetle, Xyleborus glabratus Eichhoff, which was detected in Port Wentworth, Georgia, in 2002. The beetle is the primary vector of R. lauricola in forests along the southeastern coastal plain of the United States, but other ambrosia beetle species that obtained the pathogen after the initial introduction may play a role in the avocado (Persea americana Miller) pathosystem....AuthorsRandy Ploetz, Paul Kendra, Robin Choudhury, Jeffrey Rollins, Alina Campbell, Karen Garrett, Marc Hughes, Tyler J. DreadenKeywordsSourceForestsYear2017
- Heirs’ property is a form of tenancy in common. It is typically inherited land passed to subsequent generations asintestate property, or property inherited outside of the formal probate process, without “clear title.” In economicterms, this form of property ownership can result in inefficient property uses, as owners tend to under-invest insuch properties, owing to uncertainties regarding returns on investments. This, in turn, contributes to a diminutionof wealth for affected families. Unclear titles also impede homeowners’ ability to apply for various forms of land and home improvement...AuthorsCassandra Johnson Gaither, Stan ZarnochSourceLand Use PolicyYear2017
- This study evaluated the effectiveness of two bioswales eight years after construction in Davis, California. The treatment bioswale measured 9 m × 1 m × 1 m (L × W × D). Engineered soil mix (75% native lava rock and 25% loam soil) replaced the native loam soil. Four Red Tip Photinia (Photinia × fraseri Dress) trees and two Blueberry Muffin Hawthorn (Rhaphiolepis umbellata (Thunb.) Makino) shrubs were planted in the bioswale. Runoff flowed into the bioswale from an adjacent 171 m2 panel of turf grass. An identically sized control bioswale consisting of non-disturbed native soil was located...AuthorsQingfu Xiao, E. Gregory McPherson, Qi Zhang, Xinlei Ge, Randy DahlgrenKeywordsSourceInfrastructuresYear2017
- This report presents a summary of the most recent inventory of New Mexico’s forests based on field data collected between 2008 and 2014. The results presented here summarize a complete cycle of New Mexico’s forest inventory, or 10 years’ worth of data collection, whereas the previous report was based only on 9 years’ worth of data collected under an accelerated implementation schedule between 2008 and 2012. Therefore, the results presented here are qualitatively and quantitatively similar to those in the previous report; any differences are likely due to sampling error or changes in...AuthorsSara A. Goeking, James S. MenloveKeywordsSourceResour. Bull. RMRS-RB-24. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 68 p.Year2017
- Spruce beetle (Dendroctonus rufipennis) outbreaks are rapidly spreading throughout subalpine forests of the Rocky Mountains, raising concerns that altered fuel structures may increase the ecological severity of wildfires. Although many recent studies have found no conclusive link between beetle outbreaks and increased fire size or canopy mortality, few studies have addressed whether these combined disturbances produce compounded effects on short-term vegetation recovery. We tested for an effect of spruce beetle outbreak severity on vegetation recovery in the West Fork Complex fire in...AuthorsAmanda R. Carlson, Jason S. Sibold, Timothy J. Assal, Jose NegronKeywordsSourcePLoS ONE. 12(8): e0181778.Year2017
- Plant invasion typically occurs within a landscape‐scale framework of abiotic and biotic conditions, often resulting in emergent feedbacks among environment, ecosystem functions, and the dominance of invasive species. Understanding the mechanisms underlying successful invasions is an important component of conservation and management efforts, but this has been poorly investigated in a spatially explicit manner. Knowing where and why invasion patterns change throughout the landscape enables managers to use context‐specific controls on the spread of invasive species. Using high‐resolution...AuthorsJomar M. Barbosa, Gregory P. Asner, Flint F. Hughes, Tracy JohnsonKeywordsSourceEcological Applications. 27(2): 403-415Year2017
- Log rules estimate the volume of green lumber that can be expected to result from the sawing of a log. As such, this ability to reliably predict lumber recovery forms the foundation of log sales and purchase. The more efficient a sawmill, the less the scaling methods reflect the actual volume recovery and the greater the overrun factor. Using high-resolution scanned log data and the RAYSAW hardwood log sawing simulator, we compared recovery results for a 32-log sample with data from other mills and examined the overrun factors for common log scaling methods. With the sample logs, we saw...AuthorsEd Thomas, Neal BennettSourceForest Products JournalYear2017
- This study used tree data from field plots in urban areas to describe forest structure in urban areas throughout California. The plot data were used with numerical models to calculate several ecosystem services produced by trees. A series of transfer functions were calculated to scale-up results from the plots to the landscape using urban tree canopy (UTC) mapped at 1-m resolution for each combination of 6 land use classes and climate zones. California's UTC covered 15% of the urban area and contained 173.2 million trees, five per city resident. UTC per capita was lowest among U.S. states...AuthorsE. Gregory McPherson, Qingfu Xiao, Natalie S. van Doorn, John de Goede, Jacquelyn Bjorkman, Allan Hollander, Ryan M. Boynton, James F. Quinn, James H. ThorneKeywordsSourceUrban Forestry & Urban GreeningYear2017
- We developed a process to address terrestrial wildlife species for which management for ecosystem diversity may be inadequate for providing ecological conditions capable of sustaining viable populations. The process includes (1) identifying species of conservation concern, (2) describing source habitats, and other important ecological factors, (3) organizing species into groups, (4) selecting surrogate species for each group, (5) developing surrogate species assessment models; (6) applying surrogate species assessment models to evaluate current and historical conditions, (7) developing...AuthorsWilliam L. Gaines, Barbara C. Wales, Lowell Suring, James S. Begley, Kim Mellen-McLean, Shawne MohoricKeywordsSourceGen. Tech. Rep. PNW-GTR-907. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 324 p.Year2017