| Resources |
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Human
impacts on fisheries resources |
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| Selected
answers |
| 1 |
Class
Discussion
Review the resources after the discussion to see if they
had missed any points. Some of the impacts that may be
raised during discussions are: |
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Overfishing
and the competing demands of different groups on fisheries
resources. |
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Pollution,
including silting, shellfish contamination, oil spills,
heavy metals, anti-fouling paints, plastics, dinoflagellates,
offal dumping by factory trawlers, etc. |
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Modern
fishing techniques, such as driftnetting. |
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By-catch
of fish, birds and marine mammals. |
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How
human activity interferes with predator-prey relationships
and changes the balance of species to species, and species
to space. |
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Ozone
depletion and global warming. |
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With
increased international travel, fish and shellfish diseases
can now spread more rapidly. |
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The
discharge of ballast water from visiting ships can introduce
undesirable organisms into our marine environment. |
