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- Research Project Database | NCER | ORD | US EPA
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- Large ecosystem changes such as eutrophication, shifts among vegetation types, degradation of coral reefs and regional climate ... often come as surprises because we lack leading indicators for regime shifts.
- Final Report | Ecosystem Thresholds and Alternate States In Great Plains Rivers and Streams: Cascading Effects of Anthropogenic Hydrologic Disturbance01-05-2009
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- Such regime shifts have been demonstrated for lakes, oceans, and several terrestrial environments; however, it is unclear whether and how alternate regimes develop in naturally dynamic stream systems ...
- Final Report | Linking Watershed Characteristics with Flow Regime and Geomorphic Context to Diagnose Water Quality Impairment at Multiple Spatiotemporal Scales01-05-2009
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- ... research also demonstrates the possibility of combining readily predicted flow regime metrics and geomorphic attributes to explore and quantify linkages between specific aspects of the flow regime and aquatic community structure ...
- 2007 Annual Report | Eutrophication Thresholds – Assessment, Mitigation, and Resilience in Landscapes and Lakes01-05-2009
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- ... under which changes in variance can provide advance warning of regime shifts in ecosystems subject to input of pollutants... Variance as a leading indicator of regime shift in ecosystem services.
- 2006 Annual Report | Eutrophication Thresholds – Assessment, Mitigation, and Resilience in Landscapes and Lakes04-16-2007
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- ... under which changes in variance can provide advance warning of regime shifts in ecosystems subject to input of pollutants... Variance as a leading indicator of regime shift in ecosystem services.
- Retrospective Analysis Of A Multi-Decadal Phytoplankton Time-Series In Naragansett Bay: Stressors, Resilience, Change, And Ecological Thresholds04-18-2006
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- ... main objectives will be pursued: (1) to detect and identify regime shifts in phytoplankton species and biomass behavior; (2) to quantify phytoplankton ...
- Retrospective Analysis Of A Multi-Decadal Phytoplankton Time-Series In Naragansett Bay: Stressors, Resilience, Change, And Ecological Thresholds04-18-2006
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- ... main objectives will be pursued: (1) to detect and identify regime shifts in phytoplankton species and biomass behavior; (2) to quantify phytoplankton ...
- 2007 Annual Report | Quantifying Stream Ecosystem Resilence To Identify Thresholds For Salmon Recovery08-25-2009
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- ... populations are affected by small differences in the natural flow regime and influences of human water demand through the growing season.
- Page Title | About the Gulf Ecology Division | US EPA11-23-2009
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- ... have exhibited complex, non-linear responses to loading, including apparent “regime shifts.” A summary of these analyses suggests that O2 conditions improved ...
- CADDIS | US EPA Flow alteration detailed diagram narrative01-20-2010
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- Altered flow regimes in streams and rivers can cause biological impairment through a ... related life cycle cues (e.g., timing of seasonal flow regime shifts.