Much
of the global fishing effort is targeted at a few species,
located primarily near the top of the food chain. Overexploitation
of these species has three effects:
- Loss
of genetic diversity as fish populations decline.
- Relative
abundance of individual species or the mix of different
species within an ecosystem. Both the target species and
their predators decline
- Depleted
fisheries have direct economic impacts, including reduced
income and unemployment and higher consumer prices
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Over
hunting has decimated many marine mammal populations. 90 marine
mammal species are listed as threatened or endangered.
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Depleted stock
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