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Garmestani adaptive management for ecosystems
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Transcript of Garmestani adaptive management for ecosystems
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Adaptive Management of Urban Green Infrastructure
Ahjond S. Garmestani, William D. Shuster and Olivia Odom Green
•The views expressed in this presentation are those of the authors and do not represent the views or policies of the U.S. Environmental Protection Agency
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• - Violation of CWA–- combined sewer
overflows (CSO) - “Combined” sewers
Stormwater & wastewater
–- wet weather = CSOs–- public health and –environmental issue
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Cleveland, Ohio
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Green Infrastructure (GI)
• - Engineered plant-soil systems–* Rain gardens
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Cleveland
•Question:
–- Where do we infiltrate stormwaterrunoff to “dry-up” CSOs?
- Vacant lots
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Soil surveys
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•- Adaptive Management (AM) Framework
•- AM = Iterative process- incorporates citizen and stakeholder input
•- AM: critical aspect of Adaptive Governance
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Green Infrastructure (GI)
• Direct GI benefits:–- Reduction in runoff volume–- Increased detention capacity–- Restoration of natural hydrologic cycle
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Green Infrastructure (GI)
• Co-benefits from GI:
- Aesthetics
–- Recreation
–- Ecosystem services (e.g., pollination)
–- Socio-economic benefits (long-term)
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Integrating Adaptive Management into governance
*Case Study: Cleveland - Slavic Village Project
What is Adaptive Governance?
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• Resilience
–- Capacity of a system to withstand change–- If resilience is “eroded”
• System becomes vulnerable to regime shifts• Alternate regime: different set of processes and structures (e.g., coral to algae dominated reef)
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Multiple regimes• - For our purposes, urban watershed is in a degraded regime
• - Resilience isn’t a “good” thing here
• - Must erode the resilience of the degraded regime–- transform watershed to a different, “improved”
regime that mimics the natural system
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• Adaptive Management
–- Integration of resilience theory into natural resources management
–- Alter management in response to monitoring
–
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Adaptive Governance
–1) Legislation and Accountability• *Adaptive Management
2) “Intermediaries”*Bridging organizations (SVDC) and networks
–3) Matching organizations to the appropriate scale• *Panarchy
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Cleveland: Slavic Village Project
• - Phase 1: Collecting baseline data • - Gathering hydrologic and ecosystem services
data
- Phase 2: Control sites and treatment sites (i.e., implement GI in vacant lots)
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–- Goal: GI contain stormwater–- Hydrologic and ecosystem services data •- Information feeds back into the AM process
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Slavic Village Project• - Cleveland Botanical Garden is a key player in project
–* 12 rain gardens into vacant lots
- Plants have been selected for provisioning of ecosystem services (e.g., pollination)
- Ohio State University will plant 20-30 vacant lots (“minimalist” GI)
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Pollinators
• - Trade-off between citizen preferences and best plants for pollinators
• - Why? If citizens don’t like what they see they will be less likely to stay engaged in work
• - Worse………might chop plants down
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