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Great Plains Biome Map
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Great Plains Biome Map NRCS-WLFW-1024x666
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Site Images
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Great Plains Biome Map
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Great Plains Biome Map NRCS-WLFW-1024x666
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Site Images
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Great Plains Biome Map
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Great Plains Biome Map NRCS-WLFW-1024x666
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Site Images
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Great Smoky Mountains, Tennessee
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Great Smokies_Chinmay Mishra.jpg
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Vulnerability
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Climate Change Vulnerability
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Climate Change Vulnerability Assessment Photo Gallery
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Great Smoky Mountains, Tennessee
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Great Smokies_Chinmay Mishra.jpg
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Research
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…
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Assessing Vulnerability of Species and Habitats to Large-scale Impacts
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Species and Habitat Vulnerability Assessment Photo Gallery
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Green et al 1989.pdf
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Resources
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TRB Library
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GRA-HAL
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Green Young 1993.pdf
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Resources
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TRB Library
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GRA-HAL
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Green, Nancy
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Expertise Search
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GREEN-TREE RETENTION IN HARVEST UNITS: BOON OR BUST FOR BIODIVERSITY?.pdf
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etween trees and man there is a rift in the perception of time, and forest managers have no choice but to yield to the pace of the trees. This can make innovations in forest management difficult to evaluate. Nonetheless, innovation is key to meeting society’s changing expectations. It is not just timber anymore. Biodiversity, recreation, aesthetics, and clean water all share top billing with a sustainable crop of timber. And although novel silvicultural strategies are being promoted to meet these complex demands, without the benefit of time, it is difficult to know exactly how well they will achieve their goals.
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Resources
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Climate Science Documents
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Green-up dates in the Tibetan Plateau have continuously advanced from 1982 to 2011
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As the Earth’s third pole, the Tibetan Plateau has experienced a pronounced warming in the past decades. Recent studies reported that the start of the vegetation growing season (SOS) in the Plateau showed an advancing trend from 1982 to the late 1990s and a delay from the late 1990s to 2006. However, the findings regard- ing the SOS delay in the later period have been questioned, and the reasons causing the delay remain unknown. Here we explored the alpine vegetation SOS in the Plateau from 1982 to 2011 by integrating three long-term time-series datasets of Normalized Difference Vegetation Index (NDVI): Global Inventory Modeling and Mapping Studies (GIMMS, 1982–2006), SPOT VEGETATION (SPOT-VGT, 1998–2011), and Moderate Resolution Imaging Spec- troradiometer (MODIS, 2000–2011). We found GIMMS NDVI in 2001–2006 differed substantially from SPOT-VGT and MODIS NDVIs and may have severe data quality issues in most parts of the western Plateau. By merging GIMMS-based SOSs from 1982 to 2000 with SPOT-VGT–based SOSs from 2001 to 2011 we found the alpine vegetation SOS in the Plateau experienced a continuous advancing trend at a rate of ∼1.04 d·y−1 from 1982 to 2011, which was consistent with observed warming in springs and winters. The satellite-derived SOSs were proven to be reliable with observed phenology data at 18 sites from 2003 to 2011; however, comparison of their trends was inconclusive due to the limited temporal coverage of the observed data. Longer-term observed data are still needed to validate the phenology trend in the future.
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Resources
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Climate Science Documents
