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Considerations of Scale for Restoration
Kris Lightner CFR 521
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How will climate change impact where and how we approach restoration in riparian systems?
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System Components: -Temperature -Precipitation
System Components: -Temperature -Precipitation -Hydrology -Species Composition -Sedimentation -Geomorphology -Humans!
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Tipping Points (and recovery from the BEYOND)
Scheffer, M., S. Carpenter, J. A. Foley, C. Folke and B. Walker Catastrophic Shifts in Ecosystems. Nature Vol. 413, pp
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System Response to Disturbances
Pulsed – short term, intense event (hurricanes, fire, flooding, land conversion, mass wasting) Ramp – long term, steady pressure (drought, sedimentation, succession/loss, temperature) * Vary in space and time! Zedler, Joy B. and Janelle M. West Declining Diversity in Natural and Restored Salt Marshes: A 30-Year Study of Tijuana Estuary. Restoration Ecology Vol. 16, No. 2, pp. 249–262
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Climate as Disturbance
* Gradual change with pulsed events; magnification of the “usual suspects” Gradual: Increased temperature Sea level rise Pulsed: Precipitation = flashier/dryer systems Storm severity and frequency
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Species Response to Disturbance
California Condor Ability to adapt to disturbance, but restoration as well? Burrowing Owl
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Global Climate Seasonal Variation Restoration Disturbance
Regional Network System Matrix Ecosystem Patch Complex Single Patch Microhabitat Global Climate Seasonal Variation Restoration Disturbance Day Week Month Year Decade Century Millennia
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Thoughts? Questions?
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