Treesearch
Displaying 12,351 - 12,360 of 65,176 Publications- Radiotransmitters can be tail-mounted using cyanoacrylate glue and an accelerant rather than using a harness. Tail-mounted transmitters are dropped or shed when the rectrices molt, which may reduce transmitter effects while providing retention times sufficient for most research objectives. However, retention times of tail-mounted transmitters for birds are insufficiently described, and bias from not following all birds until transmitters are shed has been ignored. We studied transmitter retention of 106 birds of 6 species in the United States of America, 2010–2013, using direct observations...AuthorsRichard A. Stanton, Alicia D. Burke, Kaylan M. Carrlson, Dylan C. Kesler, John Faaborg, Frank R. ThompsonKeywordsSourceWildlife Society BulletinYear2018
- Prescribed fire is a widely used ecosystem management approach and the vast majority of burns are conducted during the dormant season; however, these burning conditions (and therefore the type and persistence of fire effects) often differ from those of natural or historical fire regimes. Therefore, we leveraged a historical study (conducted 1959–70) with remeasurements in 2015 to evaluate effects of fire season (dormant, summer), frequency (annual, biennial, periodic), and their interaction on soil physical and chemical properties in a red pine (Pinus resinosa Ait.) forest in northern...AuthorsJoshua A. James, Christel C. Kern, Jessica R. MieselKeywordsSourceForest Ecology and ManagementYear2018
- Forest ecosystems are shaped by their historical disturbance regime. Structural and species diversity are driven by disturbance frequency, patch size and microsite disturbance severity in forests across the globe. Forest management in Lake State northern hardwoods, however, has primarily used high-frequency, low- to moderate-severity canopy disturbance and low-severity microsite disturbance harvesting techniques such as single-tree selection. Catastrophic disturbances during European settlement followed by the widespread and long-term use of uniform approaches to forest management have...AuthorsStefan Hupperts, Yvette Dickinson, Christopher Webster, Christel C. KernSourceForestry: An International Journal of Forest ResearchYear2018
- Prescribed fire is increasingly viewed as a valuable tool for reversing ecological consequences of fire suppression within fire-adapted forests. While the use of burning treatments in northern temperate conifer forests has received considerable attention, the long-term (>10 year) effects on understory composition and dynamics have not been quantified. We describe the persistence of prescribed fire effects on the woody and herbaceous understory in a mature red pine (Pinus resinosa Ait.) forest in northern Minnesota, USA, over a ∼50-year period, as well as the relative roles of fire season...AuthorsSawyer S. Scherer, Christel C. Kern, Anthony W. D'Amato, Brian J. J. Palik, Matthew R. RussellKeywordsSourceCanadian Journal of Forest ResearchYear2018
- AuthorsKristian A. Stevens, Keith Woeste, Sandeep Chakraborty, Marc W. Crepeau, Charles A. Leslie, Pedro J. Martínez-García, Daniela Puiu, Jeanne Romero-Severson, Mark V. V. Coggeshall, Abhaya M. Dandekar, Daniel Kluepfel, David B. Neale, Steven L. Salzberg, Charles H. LangleySourceG3: Genes|Genomes|GeneticsYear2018
- Changes to vegetation structure and composition in forests adapted to frequent fire have been well documented. However, little is known about changes to the spatial characteristics of vegetation in these forests. Specifically, patch sizes and detailed information linking vegetation type to specific locations and growing conditions on the landscape are lacking. We used historical and recent aerial imagery to characterize historical vegetation patterns and assess contemporary change from those patterns. We created an orthorectified mosaic of aerial photographs from 1941 covering approximately...AuthorsJamie Lydersen, Brandon M. CollinsKeywordsSourceEcosystemsYear2018
- Chisholm and Fung claim that our method of estimating conspecific negative density dependence (CNDD) in recruitment is systematically biased, and present an alternative method that shows no latitudinal pattern in CNDD. We demonstrate that their approach produces strongly biased estimates of CNDD, explaining why they do not detect a latitudinal pattern. We also address their methodological concerns using an alternative distance-weighted approach, which supports our original findings of a latitudinal gradient in CNDD and a latitudinal shift in the relationship between CNDD and species abundance.AuthorsPerry S. Ong, David A. Orwig, Rebecca Ostertag, Geoffrey G. Parker, Richard P. Phillips, Lawren Sack, I-Fang Sun, J. Sebastián Tello, Duncan W. Thomas, Benjamin L. Turner, Dilys M. Vela Díaz, Tomáš Vrška, George D. Weiblen, Amy Wolf, Sandra Yap, Jonathan A. Myers, Joseph A. LaManna, Scott A. Mangan, Alfonso Alonso, Norman A. Bourg, Warren Y. Brockelman, Sarayudh Bunyavejchewin, Li-Wan Chang, Jyh-Min Chiang, George B. Chuyong, Keith Clay, Susan Cordell, Stuart J. Davies, Tucker J. Furniss, Christian P. Giardina, I. A. U. Nimal Gunatilleke, C. V Savitri Gunatilleke, Fangliang He, Robert W. Howe, Stephen P. Hubbell, Chang-Fu Hsieh, Faith M. Inman-Narahari, David Janík, Daniel J. Johnson, David Kenfack, Lisa Korte, Kamil Král, Andrew J. Larson, James A. Lutz, Sean M. McMahon, William J. McShea, Hervé R. Memiaghe, Anuttara Nathalang, Vojtech NovotnyKeywordsSourceScience. 360(6391): eaar5245Year2018
- Burkholderia cepacia ATCC 17759, isolated from forest soils in Trinidad, accumulates large amounts of polyhydroxyalkanoate copolymers when grown on xy-lose, mannose, arabinose, other carbohydrates, and organic acid cosubstrates. This 8.72-Mb draft genome sequence of B. cepacia ATCC 17759 will provide better insight into this organism’s utility in lignocellulose bioconversion.AuthorsCasey Crooks, Jonathan M. Palmer, Daniel LindnerKeywordsSourceGenome Announcements. 6(17): 1-2.Year2018
- Great Smoky Mountains National Park (GSMNP) is subject to high levels of sulfur (S) and nitrogen (N) deposition, which can adversely affect forest vegetation and aquatic biota. We used multiple chemical criteria to calculate critical loads for S and N deposition (CL (S+N)) and nutrient N (CLnutN) and used the Very Simple Dynamic (VSD) model to predict the effects of deposition reduction scenarios on critical thresholds for four forested sites in GSMNP. Critical loads were exceeded for current deposition at three of four sites using critical thresholds of aluminum to base cations (Al:Bc) =...AuthorsLinda Pardo, Natasha Duarte, Helga Van Miegroet, L. Suzanne Fisher, Molly Robin-AbbottSourceGen. Tech. Rep. NRS-180. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 26 p.Year2018
- Wood-decaying fungi tend to have characteristic substrate ranges that partly define their ecological niche. Fomitopsis pinicola is a brown rot species of Polyporales that is reported on 82 species of softwoods and 42 species of hardwoods. We analyzed the gene expression levels and RNA editing profiles of F. pinicola from submerged cultures with ground wood powder (sampled at 5 days) or solid wood wafers (sampled at 10 and 30 days), using aspen, pine, and spruce substrates (aspen was used only in submerged cultures). Fomitopsis pinicola expressed similar sets of wood-degrading enzymes...AuthorsBaojun Wu, Jill Gaskell, Benjamin W. Held, Cristina Toapanta, Thu Vuong, Steven Ahrendt, Anna Lipzen, Jiwei Zhang, Jonathan S. Schilling, Emma Master, Igor V Grigoriev, Robert A. Blanchette, Daniel Cullen, David S. HibbettKeywordsSourceApplied and Environmental Microbiology. 84(16): 1-19.Year2018