The Economic Benefits and Impacts of Sustaining the Global Ocean · 2017-06-02 · The Economic...
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The Economic Benefits and Impacts of Sustaining the
Global Ocean Rashid Sumaila
Fisheries Economics Research UnitGlobal Fisheries Cluster
The University of British ColumbiaVancouver, Canada
Third GEO Blue Planet Symposium May 31-June 2, 2017
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Outline of lecture
• Our oceans:
– How important are they to us?– Are our interactions with them sustainable?– What is the economic cost of unsustainability?– How do we move towards more sustainable
oceans?
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Our oceans are our lives
• 60% of the world’s population lives within 60 km of the coast;
• 50% of the oxygen we breathe generated by the ocean;
• Regulation of earth’s climate;• Crucial for the Earth’s environmental
balance & survival.
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Our oceans are our lives• Cultural and spiritual values;• Transport/shipping;• Playing grounds for many of us;• Support jobs; livelihoods & incomes;• Source of animal protein for many.
D. Varkey
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Fish as base for many activities
Fish stocks
AquacultureCapture fisheries
Seafood processing
Management
Recreational fisheries &
tourism
Marine manufacturing
& services, boat building
Marine research
Fishing ports and jetties
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Importance of fish to food security
• Annual ocean fish catch is ~130 million t;• Fish is a good source of protein, micro-
nutrients, minerals and essential fatty acids;• Provides 3 billion people up to 15% of
dietary animal protein;• For low-income food-deficit countries, the
contribution of fish to total animal intake is nearly 20%.
FAO (2009); Pauly and Zeller (2016)
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Gross revenues from marine capture fisheries worldwide are estimated at between US$ 150 billion annually (Pauly & Zeller, 2016; Swartz et al. 2013);
Total impact throughout the global economy is between US$ 500 billion (Dyck & Sumaila, 2010).
Economic contributions of fisheries
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Marine fisheries employment
0
10
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Indi
a
Chi
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Indo
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a
Ban
glad
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lippi
nes
Pak
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Mya
nmar
Nig
eria
Thai
land
Empl
oym
ent (
mill
ion
jobs
)
TotalIndirect
Direct
260 million people worldwide involved in marine fisheries, including direct and indirect sector
Top 10 countries providing marine employment
Teh and Sumaila (2013): Fish and Fisheries
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Human-ocean interactions unsustainable
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Examples of unsustainability
• About 20% of the original area of coral reefs lost (Wilkinson, 2008);
• Sea grasses are disappearing at a rate of 110km2 yr-1 since 1980 (Waycott, 2009);
• Seaweeds in Zanzibar dying – climate change blamed; huge economic and social consequences for many on the island especially women;
• Habitat destruction from bottom trawling.
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Climate change impacts
↑ Sea temperature; ↑ acidification; Δ ocean current pattern; Δ salinity; retreat of sea ice; ↑ coastal hypoxic
& oxygen min. zone;
↑ sea level.
Physical/Chemical changes in the
ocean
• Physiology;• Growth; &• Body size.
INDIVIDUAL
• Distribution;• Abundance; &• Recruitment.
POPULATION
• Species composition;
• Invasion/extinction.COMMUNITY
• Productivity; &• Species interaction. ECOSYSTEM
Biological / ecological changes in the ocean
Cheung, Watson & Pauly (2012): Nature
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Example: Change in landed values in Mexican EEZ
SEVERE climate change scenario MILD climate change scenario
Sumaila, Lam & Cheung (2013)
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Global fish catch and effortC
atch
(mill
ion
tonn
es)
Year
10
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40
50
60
70
80
90
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Catch
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Global fish catch and effort
*Effective effort indexed on 2000 based on average 2.42% increase annually
Effo
rt (G
W o
r wat
ts x
109
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Cat
ch (m
illio
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nnes
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1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Catch
Effective effort*
Watson et al. (2012): Fish and Fisheries
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Summary of pre-tax profit data
Sumaila et al. (2012): PLoS One
Perc
ent
80
60
40
20
00.020-0.02 -0.01 0.01
A: Pre-tax profit share of sales for 1000 fishing companies
B: Pre-tax profit share of sales for 43 fishing countries
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Global subsidy estimate
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2
4
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12
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16
18
Beneficial Capacity-enhancing Ambiguous
Subs
idy
estim
ates
($U
SD
Bill
ions
)
Developing countries Developed countries
Sumaila et al. (2010): J. Bioeconomics
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Global Potential Catch Loss (in million metric t)
Srinivasan et al. (2010): J. Bioeconomics
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Food security implications
• Loss of million t of fish per year due to overfishing and other impacts has huge food security implications;
• It is estimated that more effective management of global fish stocks could create food to avert undernourishment for about 19 million people worldwide.
Srinivasan et al. (2010): J. Bioeconomics
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Improving ocean sustainability
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Strong connection between the ocean & human wellbeing
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There is one global ocean
Exclusive economic zones (light blue) and high seas (dark blue)
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High seas EEZ
White & Costello (2014) Sumaila et al. (2015)
GOOD MANAGEMENT
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Rebuild depleted stocks
• Benefits > costs: Why no massive rebuilding?– The politics of fishing effort reduction;– Waiting time for fish stocks to rebuild; – The distribution of costs and benefits of
rebuilding.
Sumaila et al. (2012): PLoS One
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Make illegal fishing & other destructive actions uneconomic
Miller, Sumaila et al. (2016): Frontiers in Environmental …
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% S
hare
d
Catch
Landed value
Work together, cooperate
Annual shared fisheries catch and landed value across all countries 1950-2006 (Teh & Sumaila, in prep.)
Munro (1979): Canadian J. Economics; Sumaila (2013): Book
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Buy insurance through the establishment of MPAs
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06/06/2017 Global fisheries subsidies 27
Make fishing attractive to young passionate & sustainability
minded fishers
• Should be profitable & provide decent incomes;
• Fisheries should be smart, modern & cool;
• Future prospects for fishers should be good.
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Global fisheries subsidies 28
Don’t lose the fish
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Thanks for your attention