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Neves 1991.pdf
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Neves et al 1983.pdf
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New analysis highlights conservation challenges and opportunities on Western public lands
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Recently published science applies remote-sensing tools to BLM-managed rangelands and provides an unprecedented record of how the vegetation across this enormous area has changed over the past 30 years.
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New bill may mean more ability to conserve at-risk wildlife species in Arkansas
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WASHINGTON, DC – Conservation of our nation’s wildlife may see a dramatic boost thanks to a bill introduced in the U.S. House of Representatives July 12 by Representatives Jeff Fortenberry (R-NE) and Debbie Dingell (D-MI). The Recovering America’s Wildlife Act (H.R. 3742) was introduced with bipartisan support to devote additional money to wildlife conservation throughout the U.S.
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New Frameworks Guide Conservation Action
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WASHINGTON, April 6, 2021 – The U.S. Department of Agriculture (USDA) is unveiling new action-based frameworks to increase conservation work to address threats facing America’s working rangelands. These frameworks are designed to benefit both agriculture and wildlife in sagebrush and grassland landscapes of the western United States.
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New Jersey Forest Fire Service
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The New Jersey Forest Fire Service is the agency responsible for protecting life and property, as well as the state's natural resources from wildfire.
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New particle formation in forests inhibited by isoprene emissions
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It has been suggested that volatile organic compounds (VOCs) are involved in organic aerosol formation, which in turn affects radiative forcing and climate1. The most abundant VOCs emitted by terrestrial vegetation are isoprene and its derivatives, such as monoterpenes and sesquiterpenes 2. New particle formation in boreal regions is related to monoterpene emissions3 and causes an estimated negative radiative forcing4 of about 20.2 to 20.9 W m22. The annual variation in aerosol growth rates during particle nucleation events correlates with the seasonality of mono- terpene emissions of the local vegetation, with a maximum during summer5. The frequency of nucleation events peaks, however, in spring and autumn5. Here we present evidence from simulation experiments conducted in a plant chamber that isoprene can sig- nificantly inhibit new particle formation. The process leading to the observed decrease in particle number concentration is linked to the high reactivity of isoprene with the hydroxyl radical (OH). The suppression is stronger with higher concentrations of iso- prene, but with little dependence on the specific VOC mixture emitted by trees. A parameterization of the observed suppression factor as a function of isoprene concentration suggests that the number of new particles produced depends on the OH concentra- tion and VOCs involved in the production of new particles undergo three to four steps of oxidation by OH. Our measure- ments simulate conditions that are typical for forested regions and may explain the observed seasonality in the frequency of aero- sol nucleation events, with a lower number of nucleation events during summer compared to autumn and spring5. Biogenic emissions of isoprene are controlled by temperature and light2, and if the relative isoprene abundance of biogenic VOC emissions increases in response to climate change or land use change, the new particle formation potential may decrease, thus damping the aerosol negative radiative forcing effect.
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Climate Science Documents
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New Plan Guides Conservation Action On America’s Central And Eastern Grasslands And Savannas
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New Plan Guides Conservation Action on America’s Central and Eastern Grasslands and Savannas
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Landscape Partnership Newsletters
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New Songbird Habitat Study Unlocks Benefits for the Monarch Butterfly
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A new study reveals that managing habitat for songbirds like the golden-winged warbler also benefits insect pollinators like the at-risk monarch butterfly.
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Newkirk 1980.pdf
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