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Stream Impacts from Water Withdrawals in the Marcellus Shale Region
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A new study from the Appalachian Landscape Conservation Cooperative (LCC) and Cornell University looks at how the region's surface freshwater supply – and the health of natural systems delivering this resource – have been impacted and may be altered in the coming years under increasing water withdrawals.
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News & Events
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Stream Impacts from Water Withdrawals in the Marcellus Shale Region
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The Appalachian LCC provided a grant to Cornell University Environmental Engineers to study how the region’s surface freshwater supply – and the health of natural systems delivering this resource – have been impacted and may be altered in the coming years under increasing water withdrawals.
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Research
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Funded Projects
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Summary of Q3 2012 TOT Reviews
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This file contains the combined technical comments of TOT members.
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Research
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Q3 2012
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Q3 2012 Reviews by TOT Members
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The links between ecosystem multifunctionality and above- and belowground biodiversity are mediated by climate
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Plant biodiversity is often correlated with ecosystem functioning in terrestrial ecosystems. However, we know little about the relative and combined effects of above- and belowground biodiversity on multiple ecosystem functions (for example, ecosystem multifunctionality, EMF) or how climate might mediate those relationships. Here we tease apart the effects of biotic and abiotic factors, both above- and belowground, on EMF on the Tibetan Plateau, China. We found that a suite of biotic and abiotic variables account for up to 86% of the variation in EMF, with the combined effects of above- and belowground biodiversity accounting for 45% of the variation in EMF. Our results have two important implications: first, including belowground biodiversity in models can improve the ability to explain and predict EMF. Second, regional-scale variation in climate, and perhaps climate change, can determine, or at least modify, the effects of biodiversity on EMF in natural ecosystems.
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Climate Science Documents
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Washington, Dawn
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Expertise Search
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Worldwide evidence of a unimodal relationship between productivity and plant species richness
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The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and comprising a wide range of site productivities, we provide evidence in support of the HBM pattern at both global and regional extents. The relationships described here provide a foundation for further research into the local, landscape, and historical factors that maintain biodiversity.
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Climate Science Documents
