ecosystem-based management: developing a framework for ... · regime shiftscan be caused by...
TRANSCRIPT
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Andrew A. RosenbergUniversity of New Hampshire
and Conservation International
Ecosystem-based management:
developing a framework for implementation
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Evidence for ecosystem effects Large declines in overall abundance of
many stocks are have been documentedeven though the scientific debate continues regarding the magnitudes and implications of the declines.
Effects of fisheries removals can cascadethrough marine ecosystems.
Both fishing down the food web (sequential depletion) and fishing through the food web (sequential addition) occur.
National Academy of Sciences 2006. Dynamic Changes inMarine Ecosystems: Fishing, Food Webs, and Future Options
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Evidence for ecosystem effects Regime shifts can be caused by physical forcing,
fishing, or a combination of both. Shifting baselines alter perceptions of marine
ecosystems, masking the extent of ecosystem change.
Realizing that there is a theoretical limit to the productivity that can be taken from the oceans and that we may currently be at or approaching that limit, food-web interactions will become increasingly important in future fisheries management decisions.
National Academy of Sciences 2006. Dynamic Changes inMarine Ecosystems: Fishing, Food Webs, and Future Options
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Minimum Catch for Downeast Maine –1861
223 vessels averaging 45 tons caught:
12,456 mt of cod
Total Gulf of Maine Cod Catch1998 - 4156 mt1999 - 1646 mt2000 - 3730 mt2007 - 3440 mt
Est. total Gulf of Maine Catch 186178,600 mt
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Mean Trophic Levels from Statistical Bulletin Landing Data (1901-1935)and
LME Northeast US Continental Shelf Landings (1950-2003)
Mean Trophic Level (3.25MTI) 1901-2003
3.30
3.40
3.50
3.60
3.70
3.80
3.90
4.00
4.10
1901
1906
1911
1916
1921
1926
1931
1936
1941
1946
1951
1956
1961
1966
1971
1976
1981
1986
1991
1996
2001
Year
MTL
Trophic Level: Position in the food chain, determined by the number of energy-transfer steps to that level. A number indicating the position of a species within an ecosystem. By definition, plants have a TL = 1, herbivores TL = 2, and so on, up to a TL = 5 in killer whales.
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Spatial Distribution of Landings 1901-1935
Halibut Cod
Mackerel Haddock
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THE WHITE HOUSEOffice of the Press Secretary
____________________________________________________For Immediate Release June 12, 2009
•MEMORANDUM FOR THE HEADS OF EXECUTIVE DEPARTMENTS AND
AGENCIESSUBJECT: NATIONAL POLICY FOR THE OCEANS, OUR COASTS, AND THE GREAT
LAKESThe oceans, our coasts, and the Great Lakes provide jobs, food, energy resources, ecological services, recreation, and tourism opportunities, and play critical roles in our Nation's transportation, economy, and trade, as well as the global mobility of our Armed Forces and the maintenance of international peace and security. We have a stewardship responsibility to maintain healthy, resilient, and sustainable oceans, coasts, and Great Lakes resources for the benefit of this and future generations….
To succeed in protecting the oceans, coasts, and Great Lakes, the United States needs to act within a unifying framework under a clear national policy, including a comprehensive, ecosystem-based framework for the long-term conservation and use of our resources.
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Existing Uses
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Changing Uses
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Five Features of EBM1. Focus on the ability of the ecosystem to support
human well-being through the provision of ecosystem services. Services occur at multiple scales Services are not independent between scales
e.g., Nutrient cycling, natural hazard protection, fish production
2. Natural boundaries are most relevant to the conservation of ecosystem services There are multiple boundaries that are hierarchical All boundaries are leaky not absolute
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3. Various sectors of human activity interact so management should be integrated Interactions local and at larger scales
4. Impacts of human activities on an ecosystem are often cumulative across both time, space and scale
5. Tradeoffs in services among sectors must be made and should be explicit – locally and LME wide
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Ecosystem Properties
Ecosystem Processes
Ecosystem Services
Human Well-being Human Drivers
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Information mining and assimilation
Boundary delineation
Identification of activities and ecosystem components
Input to management goalsand objectives
Prioritization of activities and ecosystem components
Evaluate activities:Location, intensity, ecosystemvulnerability, benefits, linkagesvalue, tradeoffs among them
Evaluate strategies:Generating functions for ecosystem componentsFeedback loopsDecision analysis
NCEAS Science Frameworks Working group – Micheli and Rosenberg
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Ecosystem ServicesH
uman
Dri
vers
Interaction Matrix
From: Altman et al. in press. Frontiers in Ecology and Evolution
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Shipping Agriculture
Introduced sp…
Fishing
…………
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Shipping Agriculture
Introduced sp…
Fishing
…………
What is the relative strength of the effect of fishing on
biodiversity in the ecosystem?
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Shipping Agriculture
Introduced sp…
Fishing
………
SUM
Cumulative Impact Score
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Shipping Agriculture
Introduced sp…
Fishing
…………
Hum
an Driver Score
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Information mining and assimilation
Boundary delineation
Identification of activities and ecosystem components
Input to management goalsand objectives
Prioritization of activities and ecosystem components
Evaluate activities:Location, intensity, ecosystemvulnerability, benefits, linkagesvalue, tradeoffs among them
Evaluate strategies:Generating functions for ecosystem componentsFeedback loopsDecision analysis
NCEAS Science Frameworks Working group – Micheli and Rosenberg
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Informing EBM Models Organize data, Synthesize knowledge Explore uncertainties Evaluate
Decision Support Tools Inform management decisions Provide opportunities for stakeholder input, Visualize information and outcomes Explore scenarios
Indicators Monitoring ecological or socio-economic Measure progress Inform adaptation Communicate results
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Integrated Ocean Management Plan Options
Goals/Principles/Objectives/Strategies
Legal Authority of the PlanOption 1: Existing authorityOption 2: Comprehensive authorityOption 3: Supplement or amend existing authorities
Organizational/Institutional StructureOption 1: NetworkedOption 2: CentralizedOption 3: Decentralized
From: Mass. Ocean Partnership, UMass Boston Urban Harbors Institute and MRAG Americas Inc
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Integrated Ocean Management Plan Options (4-5)
Inter-jurisdictional CoordinationOption 1: CZMA authority Option 2: Special Area Management Plan (SAMP)Option 3: Programmatic General Permit (PGP)Option 4: Comprehensive intergovernmental agreement Option 5: New interagency management network
Public and Stakeholder InvolvementOption 2: Advisory Council Option 3: Public Private PartnershipOption 4: Existing public participation opportunities Option 5: Regional advisory committees
From: Mass. Ocean Partnership, UMass Boston Urban Harbors Institute and MRAG Americas Inc
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Integrated Ocean Management Plan Options
Management ApproachesMarine Spatial Planning
Option 1: Comprehensive management areasOption 2: Specific areas for protection Option 3 Performance standards for allowed usesOption 4: Opportunity maps for new activities
From: Mass. Ocean Partnership, UMass Boston Urban Harbors Institute and MRAG Americas Inc
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From: Massachusetts Draft Ocean Plan 2009
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