Assessing the health of the world’s ocean
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Assessing the health of the world’s ocean
Embargoed
An Ocean Health Index to assess global marine social-ecological systemsHalpern et al. in press, Nature
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Ocean Health Index:A healthy ocean sustainably delivers a range of benefits to people, now
and in the future
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FOOD PROVISIONFOOD PROVISIONFOOD PROVISIONFOOD PROVISIONARTISANAL FISHING ARTISANAL FISHING
OPPORTUNITIESOPPORTUNITIESARTISANAL FISHING ARTISANAL FISHING
OPPORTUNITIESOPPORTUNITIES
NATURAL PRODUCTSNATURAL PRODUCTSNATURAL PRODUCTSNATURAL PRODUCTS
CARBON STORAGECARBON STORAGECARBON STORAGECARBON STORAGECOASTAL COASTAL
PROTECTIONPROTECTIONCOASTAL COASTAL
PROTECTIONPROTECTION
SENSE OF PLACESENSE OF PLACESENSE OF PLACESENSE OF PLACE
CLEAN WATERSCLEAN WATERSCLEAN WATERSCLEAN WATERS
BIODIVERSITYBIODIVERSITYBIODIVERSITYBIODIVERSITY
TOURISM & RECREATIONTOURISM & RECREATIONTOURISM & RECREATIONTOURISM & RECREATION
LIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIES
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PRESENTREFERENCE
CURRENTSTATUS
LIKELYFUTURE
TREND
PRESSURES
RESILIENCE
+
FOOD PROVISIONFOOD PROVISIONFOOD PROVISIONFOOD PROVISIONARTISANAL FISHING ARTISANAL FISHING
OPPORTUNITIESOPPORTUNITIESARTISANAL FISHING ARTISANAL FISHING
OPPORTUNITIESOPPORTUNITIES
NATURAL PRODUCTSNATURAL PRODUCTSNATURAL PRODUCTSNATURAL PRODUCTS
CARBON STORAGECARBON STORAGECARBON STORAGECARBON STORAGECOASTAL COASTAL
PROTECTIONPROTECTIONCOASTAL COASTAL
PROTECTIONPROTECTION
SENSE OF PLACESENSE OF PLACESENSE OF PLACESENSE OF PLACE
CLEAN WATERSCLEAN WATERSCLEAN WATERSCLEAN WATERS
BIODIVERSITYBIODIVERSITYBIODIVERSITYBIODIVERSITY
TOURISM & RECREATIONTOURISM & RECREATIONTOURISM & RECREATIONTOURISM & RECREATION
LIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIESLIVELIHOODS & ECONOMIES
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Functional relationships:now vs. the ideal
Maximum sustainable yield multispecies MSY
Worm et al. 2009 Science
Food provision: fisheries
Current
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Time series:now vs. then
Change in mangrove areal extent
Carbon storage
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Time series:now vs. then
Change in mangrove areal extent
Carbon storage
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Spatial comparisons:now vs. there
Data from FAO
Food provision: mariculture
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Spatial comparisons:now vs. there
Worse BetterWorse Better
Livelihoods: wages
Marine wages
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Established state:now vs. a precedent
Sense of place: lasting special places
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Reference points for the global analysis
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First Global Assessment
• 171 countries/territories
• All waters within EEZs
• >100 data layers
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Some key messages/results
1. Index provides a portfolio perspective
2. Sustainability fundamental to, and operationalized in, the Index
3. Human benefits central to Index
4. Different perspectives incorporated
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Portfolio Perspective: many ways to get a score
*
AO = Artisanal Opportunity FIS = Fisheries MAR = MaricultureNP = Natural ProductsCS = Carbon StorageCP = Coastal ProtectionTR = Tourism & Recreation LIV = Livelihoods ECO = Economies ICO = Iconid Species LSP = Lasting Special Places HAB = Habitats SPP = SpeciesCW = Clean Waters
FP
LE
SP
BD
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Portfolio Perspective: many ways to get a score
AO = Artisanal Opportunity FIS = Fisheries MAR = MaricultureNP = Natural ProductsCS = Carbon StorageCP = Coastal ProtectionTR = Tourism & Recreation LIV = Livelihoods ECO = Economies ICO = Iconid Species LSP = Lasting Special Places HAB = Habitats SPP = SpeciesCW = Clean Waters
FP
LE
SP
BD
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Portfolio Perspective: many ways to get a score
AO = Artisanal Opportunity FIS = Fisheries MAR = MaricultureNP = Natural ProductsCS = Carbon StorageCP = Coastal ProtectionTR = Tourism & Recreation LIV = Livelihoods ECO = Economies ICO = Iconid Species LSP = Lasting Special Places HAB = Habitats SPP = SpeciesCW = Clean Waters
FP
LE
SP
BD
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Sustainability: future state
Artisanal OpportunityFood ProvisionNatural ProductsCarbon StorageCoastal ProtectionTourism & RecreationLivelihoods & EconomiesSense of Place BiodiversityClean Waters
0
25
50
75
100
0 25 50 75 100
Current State
Fu
ture
Sta
te
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Accounting for different perspectives: weighting goals by value sets
• People care about different aspects of the ocean
• These differences are really important to understand and capture if management is to be effective
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All goals are presumed equally important
Extractive goals are presumed more important
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OHI: Science to Action
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Summary
• Transparent, quantitative, ‘divable’, scalable, flexible, responsive, synthetic, target-driven, best available information
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