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University of Oklahoma

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The development of a hydrologic foundation, essential for advancing our understanding of flow-ecology relationships, was accomplished using the high-resolution physics-based distributed rainfall-runoff model Vflo. We compared the accuracy and bias associated with flow metrics that were generated using Vflo at both a daily and monthly time step in the Canadian River basin, USA. First, we calibrated and applied bias correction to the Vflo model to simulate streamflow at ungaged catchment locations. Next, flow metrics were calculated using both simulated and observed data from stream gage locations. We found discharge predictions using Vflo were more accurate than using drainage area ratios. General correspondence...
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Understanding the Nexus between Climate, Streamflow, Water Quality, and Ecology in the Arkansas-Red River Basin
Currently, maintaining appropriate flows to support biological integrity is difficult for larger riverine ecosystems. Climate change, through increased temperature, reduced rainfall, and increased rainfall intensity, is expected to reduce water availability and exacerbate the maintenance of ecological flows in the Arkansas-Red River basin. Understanding the nexus among climate change effects on streamflow, water quality, and stream ecology for watersheds in the Arkansas-Red River Basin can be achieved using currently existing science and technology. This nexus approach will strengthen adaptive-management strategies that focus on shared ecosystem conservation watershed targets. This approach will provide natural-resource...
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Historic and Current Habitat Use by Arkansas River Shiner in the South Canadian River in Central Oklahoma as Affected by River Flow: Predictions for Habitat Under Future Climate Scenarios
The Arkansas River Shiner (ARS), Notropis girardi, is a federally threatened minnow that now occurs natively in modest numbers only in the South Canadian River, following decades of range contraction and population losses. The remaining populations are at increasing risk as global change is expected to impact the upper and middle South Canadian River with a rise in temperature as much as 4-6 F and a decrease in precipitation from 10 to 35 % in this century. The primary objective of this project was to evaluate potential effects of habitat and environmental change on Arkansas River shiners by examination of habitat use and availability at several spatial scales using both historical and recently-collected data from...
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Climate Change and Climate Adaptation Training for Grasslands Conservation Practitioners
North American Grassland ecosystems are a regional priority of the U.S. Fish and Wildlife Service (FWS).And in order to implement Strategic Habitat Conservation (SHC) planning the FWS Grasslands EcosystemTeam (GET) needs to better understand the threat of climate change. Based on survey results of GET’sknowledge and needs, we propose to deliver targeted training to enhance the GETs ability tostrategically address climate issues in conservation planning. To date, the GET has successfullyaddressed other grassland threats (e.g., land conversion) but without this training the GET will behandicapped in their ability to fully integrate climate impacts and adaptation into the grassland SHC.
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