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Carbon in idle croplands
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The collapse of the Soviet Union had diverse consequences, not least the abandonment of crop cultivation in many areas. One result has been the vast accumulation of soil organic carbon in the areas affected.
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Resources
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Climate Science Documents
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Biophysical controls on organic carbon fluxes in fluvial networks.pdf
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Metabolism of terrestrial organic carbon in freshwater ecosystems is responsible for a large amount of carbon dioxide outgassing to the atmosphere, in contradiction to the conventional wisdom that terrestrial organic carbon is recalcitrant and contributes little to the support of aquatic metabolism. Here, we combine recent findings from geophysics, microbial ecology and organic geochemistry to show geophysical opportunity and microbial capacity to enhance the net heterotrophy in streams, rivers and estuaries. We identify hydrological storage and retention zones that extend the residence time of organic carbon during downstream transport as geophysical opportunities for microorganisms to develop as attached biofilms or suspended aggregates, and to metabolize organic carbon for energy and growth. We consider fluvial networks as meta-ecosystems to include the acclimation of microbial communities in downstream ecosystems that enable them to exploit energy that escapes from upstream ecosystems, thereby increasing the overall energy utilization at the network level.
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Resources
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Climate Science Documents
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Reviewing Existing Tools and Data on Hydrologic and Ecologic Flow Models
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The Aquatic Ecological Flows project reviewed existing tools and gathered available data within the project area on hydrologic and ecological flow models that would be suitable to use for the region.
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News & Events
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Aquatic Ecological Flows Project Update
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This presentation from Dr. Todd Walter of Cornell University provides an update to the Steering Committee on the Appalachian LCC funded research project. The Aquatic Ecological Flows project is providing a report assessing availability of hydrologic and ecological flow model(s) suitable for the region, a georeference assessment of available ecological data to inform the ecological flow model(s), the application of the model(s) to anticipate how altered flow regimes will affect critical conditions, and a report that forecasts changes in hydrology and associated predicted biological responses in relation to different water resource development scenarios for critical watersheds.
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Cooperative
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Past SC Meetings and Materials
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Steering Committee Call 3/6/14
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Aquatic Ecological Flows Phase 1 Report
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The 1st phase of the Aquatic Ecological Flows project involved reviewing existing tools and gathering available data within the project area on hydrologic and ecological flow model(s) that would be suitable for the region. This Report details that work.
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Workspace
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Deliverables
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Stream Impacts from Water Withdrawals Phase 1 Report
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The 1st phase of this research project involved reviewing existing tools and gathering available data within the project area on hydrologic and ecological flow model(s) that would be suitable for the region.
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Research
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Funded Projects
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Stream Impacts from Water Withdrawals in the Marcellus Shale Region
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2nd Quarter, 2013 TOT Comments
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Review of Quarterly Report by Technical Oversight Team
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Quarterly Reports
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Q2 2013
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Ecological Flows 2nd Quarter Report, 2013
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Report from Vendors of the Aquatic Ecologic Flows Project.
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Quarterly Reports
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Q2 2013
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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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Environmental Flows from Water Withdrawals in the Marcellus Shale Region
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The Appalachian LCC collaborated with Cornell University to study the environmental impacts of water withdrawals in the Central Appalachian region. The rivers and streams of the Central Appalachians are home to more than 200 species of fish and other aquatic life. They also provide a reliable source of drinking water, recreational opportunities and associated economic benefits to people living in large cities and surrounding communities. This research 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. It focuses on the Marcellus Shale region in the Central Appalachians, including portions of NY, PA, OH, MD, WV and VA.
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Research
