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A Path Forward: Understanding and Restoring Degraded Forests A Working Lands for Wildlife Virtual Event
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The impact of high-grading on forest wildlife in the Eastern deciduous forests.
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Adaptive Silviculture for Climate Change Project Now Underway
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A new study is underway in New Hampshire's northwoods that will further our understanding of management options for climate change adaptation. The Adaptive Silviculture for Climate Change (ASCC) project is a collaborative effort among scientists and land managers to develop a network of experimental silvicultural trials in different forest ecosystem types throughout the United States, and the Second College Grant, located in the Northern Forest region of New Hampshire and owned and managed by Dartmouth College, is one of five ASCC study sites. The project was initiated last fall and launched into full-force this spring with pre-treatment data collection. Timber harvests began this summer to implement forest management treatments demonstrating the three adaptation options of resistance, resilience, and transition. Scientists and managers will be planting tree species that have been identified as future-adapted for the transition treatment next spring, which includes northern red oak, bitternut hickory, eastern white pine, eastern hemlock, basswood, black birch, bigtooth aspen, and chestnut. To learn more about the Second College Grant ASCC project, contact the Site Leads Tony D'Amato or Chris Woodall.
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America's Forests in South Carolina - Sustainable Forestry and African American Land Retention Network
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This episode of America's Forests with Chuck Leavell in South Carolina features African American landowners and foresters and The Sustainable Forestry and African American Land Retention Network, a program of the U.S. Endowment for Forestry and Communities.
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America's Longleaf Restoration Initiative
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The America's Longleaf Restoration Initiative (ALRI) is a collaborative effort of multiple public and private sector partners that actively supports range-wide efforts to restore and conserve longleaf pine ecosystems.
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Best Management Practices for Golden-winged Warbler Habitats in the Appalachian Region: A Guide for Land Managers and Landowners
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This guide is intended to provide land managers and landowners with regional, habitat-specific strategies and techniques to begin developing and restoring habitat for Golden-winged Warblers. This document includes general information that applies to all habitat types in the Appalachian region and should be used along with supplemental documents dedicated to the management of specific regional habitat types (deciduous forests, minelands, abandoned farmlands, grazed forestland/montane pastures, utility rights-of-way, forest and shrub wetlands) most important to Golden-winged Warblers.
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Golden-Winged Warbler Appalachians Fact Sheets
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Best Management Practices for Golden-winged Warbler Habitat in Deciduous Forests of the Appalachians
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This is a supplemental document that provides information on managing deciduous forests in the Appalachians to develop and restore habitat for Golden-winged Warblers. This guide should be used in conjunction with the Best Management Practices for Golden-winged Warbler Habitats in the Appalachian Region, which includes general information that applies to all habitat types in the Appalachian region.
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Fact Sheets
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Golden-Winged Warbler Appalachians Fact Sheets
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Bias in the attribution of forest carbon sinks
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A substantial fraction of the terrestrial carbon sink, past and present, may be incorrectly attributed to environmental change rather than changes in forest management.
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Climate Science Documents
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Bringing Back Diversity in Eastern Forests for Landowners, Wildlife
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What do biologists look for in a healthy forest? A diversity in the ages and composition of trees and occasional breaks in canopy to allow sunlight to reach understory plants.
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News & Events
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Brownness of organics in aerosols from biomass burning linked to their black carbon content
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Atmospheric particulate matter plays an important role in the Earth’s radiative balance. Over the past two decades, it has been established that a portion of particulate matter, black carbon, absorbs significant amounts of light and exerts a warming effect rivalling that of anthropogenic carbon dioxide1,2. Most climate models treat black carbon as the sole light-absorbing carbonaceous particulate. However, some organic aerosols, dubbed brown carbon and mainly associated with biomass burning emissions3–6 , also absorbs light7 . Unlike black carbon, whose light absorption properties are well understood8, brown carbon comprises a wide range of poorly characterized compounds that exhibit highly variable absorptivities, with reported values spanning two orders of magnitude3–6,9,10. Here we present smog chamber experiments to characterize the effective absorptivity of organic aerosol from biomass burning under a range of conditions. We show that brown carbon in emissions from biomass burning is associated mostly with organic compounds of extremely low volatility11. In addition, we find that the effective absorptivity of organic aerosol in biomass burning emissions can be parameterized as a function of the ratio of black carbon to organic aerosol, indicating that aerosol absorptivity depends largely on burn conditions, not fuel type. We conclude that brown carbon from biomass burning can be an important factor in aerosol radiative forcing.
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Can forest management be used to sustain water-based ecosystem services in the face of climate change?
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Forested watersheds, an important provider of ecosystems services related to water supply, can have their structure, function, and resulting streamflow substantially altered by land use and land cover. Using a retrospective analysis and synthesis of long-term climate and streamflow data (75 years) from six watersheds differing in management histories we explored whether streamflow responded differently to variation in annual temperature and extreme precipitation than unmanaged watersheds. We show significant increases in temperature and the frequency of extreme wet and dry years since the 1980s. Response models explained almost all streamflow variability (adjusted R2 . 0.99). In all cases, changing land use altered streamflow. Observed watershed responses differed significantly in wet and dry extreme years in all but a stand managed as a coppice forest. Converting deciduous stands to pine altered the streamflow response to extreme annual precipitation the most; the apparent frequency of observed extreme wet years decreased on average by sevenfold. This increased soil water storage may reduce flood risk in wet years, but create conditions that could exacerbate drought. Forest management can potentially mitigate extreme annual precipitation associated with climate change; however, offsetting effects suggest the need for spatially explicit analyses of risk and vulnerability.
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