Treesearch
Displaying 3,531 - 3,540 of 65,140 Publications- 1. Dominance often indicates one or a few species being best suited for resource capture and retention in a given environment. Press perturbations that change availability of limiting resources can restructure competitive hierarchies, allowing new species to capture or retain resources and leaving once dominant species fated to decline. However, dominant species may maintain high abundances even when their new environments no longer favour them due to stochastic processes associated with their high abundance, impeding deterministic processes that would otherwise diminish them.2. Here, we...AuthorsPeter A. Wilfahrt, Eric W. Seabloom, Jonathan D. Bakker, Lori Biederman, Miguel N. Bugalho, Marc W. Cadotte, Maria C. Caldeira, Jane A. Catford, Qingqing Chen, Ian Donohue, Anne Ebeling, Nico Eisenhauer, Sylvia Haider, Robert W. Heckman, Anke Jentsch, Sally E. Koerner, Kimberly J. Komatsu, Ramesh Laungani, Andrew MacDougall, Jason P. Martina, Holly Martinson, Joslin L. Moore, Yujie Niu, Timothy Ohlert, Harry Olde Venterink, Devyn Orr, Pablo Peri, Edwin Pos, Jodi Price, Xavier Raynaud, Zhengwei Ren, Christiane Roscher, Nicholas G. Smith, Carly J. Stevens, Lauren L. Sullivan, Michelle Tedder, Pedro M. Tognetti, Ciska Veen, George Wheeler, Alyssa L. Young, Hillary Young, Elizabeth T. BorerKeywordsSourceJournal of Ecology. 111: 2472-2482.Year2023
- Morphological characterization of microfibrillated cellulose (MFC) is critically important to process control in production and product specification for trade and product development yet is extremely difficult. This study evaluated several indirect methods for relative comparison of the morphology of lignin-free and lignin-containing ((L)MFCs). The (L)MFCs studied were produced using a commercial grinder through different passes from a dry lap bleached kraft eucalyptus pulp, a virgin mixed (maple and birch) unbleached kraft hardwood pulp, and two virgin-unbleached kraft softwood (loblolly...AuthorsXiaoxue Zhang, Peter Kitin, Umesh P. Agarwal, Roland L. Gleisner, Junyong ZhuKeywordsSourceCarbohydrate PolymersYear2023
- The annual national report of the Forest Health Monitoring (FHM) program of the Forest Service, U.S. Department of Agriculture, presents forest health status and trends from a national or multistate regional perspective using a variety of sources, introduces new techniques for analyzing forest health data, and summarizes results of recently completed Evaluation Monitoring projects funded through the FHM national program. In this 22nd edition in a series of annual reports, national survey data are used to identify recent geographic patterns of insect and disease activity. Satellite data are...AuthorsKevin M. Potter, Barbara ConklingKeywordsYear2023
- Context Non-native species invasions are altering the composition, structure, function, and dynamics of forests globally. The Hawaiian Islands are a global biodiversity hotspot for non-native invasive plant species. New spatial inventory data for forests of Hawaiʻi can provide insights into invasive species presence and dominance across complex landscapes. Objectives We employed a network of 238 standardized plots spanning climate and soil gradients to conduct the first comprehensive assessment of nonnative plant invasions in forests of Hawaiʻi. We examined non-native plant dominance from...AuthorsKevin M. Potter, Christian P. Giardina, Flint F. Hughes, Susan Cordell, Olaf Kuegler, Amy Koch, Emma YuenKeywordsSourceLandscape EcologyYear2023
- The National Silviculture Workshop (NSW) is a biennial forum on silvicultural advances hosted by the USDA Forest Service. In July of 2022, this gathering brought over one hundred seventy silvicultural workers from all parts of the agency, plus some from academia and industry, to Kellogg, Idaho. Against the spectacular backdrop of the northern Rocky Mountains, NSW participants learned about the various challenges and opportunities faced by Forest Service silviculturists and silvicultural researchers, especially on reforestation and early stand improvement challenges on Forest Service lands....AuthorsDon C. Bragg, Janet Hinchee, Terrie B. JainKeywordsSourceJournal of ForestryYear2023
- Industrial forestry activities can increase landscape fragmentation, impacting wildlife populations, particularly Canada’s woodland caribou, Rangifer tarandus caribou. To protect caribou in areas with forestry activities, the province of Ontario, Canada, implemented a Dynamic Caribou Harvest Schedule (DCHS). The DCHS spatially aggregates harvest disturbance into regions and distributes them across the landscape to maintain forest patch size–age distributions consistent with a natural variation range. However, the DCHS may negatively impact the cost of timber supply. We compared the DCHS...AuthorsDenys Yemshanov, Triin Hart, Jeff Cameron, Ning Liu, Frank H. H. Koch, Mathieu LeblondKeywordsSourceCanadian Journal of Forest ResearchYear2023
- Biased understanding of savanna biogeography: Grasslands and savannas exist across a wide range of climates. Mesic savannas, with highly variable tree densities, are particularly misunderstood and understudied in comparison to arid and semi-arid savannas. North America contains historically extensive mesic savannas dominated by longleaf pine. Longleaf pine savannas may have once been the largest savanna type on North America, yet these ecosystems have been overlooked in global syntheses. Excluding these “Forgotten Ecosystems” from global syntheses biases our under-standing of savanna...AuthorsStephanie Pau, Daniel M. Griffith, Nicole E. Zampieri, Jennifer CostanzaKeywordsSourceGlobal Ecology and BiogeographyYear2023
- Lindera melissifolia is an endangered shrub indigenous to the broadleaf forest of the Mississippi Alluvial Valley (MAV). In this region, extant colonies of the species are found in periodically ponded habitats where a diversity of broadleaf trees can form well-developed overstory and sub-canopies—these habitat characteristics suggest that soil flooding and light availability are primary drivers of L. melissifolia ecophysiology. To understand how these two factors affect its photosynthetic capacity, we quantified leaf characteristics and photosynthetic response of plants grown in a large-sca...AuthorsEmile S. Gardiner, Ted Leininger, Kristina Connor, Margaret Devall, Paul Hamel, Nathan Schiff, Dan D. WilsonKeywordsSourceConservation PhysiologyYear2023
- Investment is essential to ensure that forests are properly restored, protected, and managed to meet the various needs of society, including a wide range of public and private organizations. This article offers an overview of capital investment and annual expenditures related to forests in the United States, encompassing both the public and private sectors. In 2020, the total capital investment and annual expenditure were $242 billion (in 2020 dollars). Our findings indicate that private investment is surpassing public investment. However, there were differences in the types of investments...AuthorsJaana Korhonen, Gregory E. FreyKeywordsYear2023
- Satellite-based forest alert systems are an important tool for ecosystem monitoring, planning conservation, and increasing public awareness of forest cover change. Continuous monitoring in tropical regions, such as those experiencing pronounced monsoon seasons, can be complicated by spatially extensive and persistent cloud cover. One solution is to use Synthetic Aperture Radar (SAR) imagery acquired by the European Space Agency’s Sentinel-1A and B satellites. The Sentinel 1A and B satellites acquire C-band radar data that penetrates cloud cover and can be acquired during the day or night....AuthorsAte Poortinga, Biplov Bhandari, Nyein Soe Thwal, Nguyen Hanh Quyen, Jeff Silverman, Karis Tenneson, John Burns Kilbride, David M. Bell, Matthew Gregory, Robert Kennedy, David SaahKeywordsSourceRemote Sensing. 15(21): 5223.Year2023