91 000
Mangroves
Current ranges of total valuation estimates
of blue carbon sinks per hectare
Figure 21: Although coastal ecosystems
15 000
are already among the most valuable on
the planet, the current estimates of the
economic value for some of the oceans
blue carbon sinks are surprisingly low.
How should human perception of
Seagrass
these important ecosystems change as
we learn of the vast benefits of main-
taining healthy coasts and oceans?
Coral reef
10 000
5 000
Deep sea
Salt
Coastal
marshes
plankton
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0
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Ecosystem service value per hectare
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US dollars
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Ranges of diff
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erent values
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found in literature
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- Sources: Martinez
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- et al.- 2007; Gunawardean and
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Rowan, 2005; Spurgeon, 2004; Costanza, 1997.
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