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14 Cards in this Set
- Front
- Back
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Give an example of the fish population being overexploited and the number of adult fish falling below a critical level.
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Peruvian anchoveta fishery.
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What causes the fisih population to decrease.
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Overfishing and the fall in production of eggs.
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Why are fish important to the eco system?
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many predators rely on it for food and the lack of fish would reduce the predators.
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What is in situ coservation?
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conserving a species in its own habbitat
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What are the prons of in situ conservation
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species are in their own habbitat
more genetic diversity is conserved natural behavior patterns are not disturbed species can interact with each other, helping to conserve the whole ecosystem |
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what are the cons of in situ conservation?
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some species are so rare that they cannot stya in their habbitat
the destruction of a habbitat makes it essentail to remove hte species |
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What is management in natural reserves?
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active interventions.
this can be the removal of alien species, restriction of human explotation and specila measures such as supplementary feeding or clearing vegetation. |
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What is ex situ conservation? what types of ex situconservations are there?
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differnt forms of ex situ conservation are captive breeding, botanic gardens, and seed banks. Ex situ conservation is when the species is not in its origional habbitat
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What is captive breeding in ex situ conservation?
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captive breeding is when memebers of a speices are caught and moved to a zoo and encouraged to breed.
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What is a botanic garden?
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A botanic garden is a site in whihc differnt speicies of plants are cultivated in a green house or in the open.
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What is a seed bank?
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A seed bank is when seeds are stored in cold storages. the seeds of hte species would survive over time. if the older species can no longer lst, it is grown and germinated to produce more seeds.
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What is the WWF?
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an volentary organization that supports conservation organizations. It involves political lobbying, monitoring endangered species and establishing reserves. stands for world wildlife fund.
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What is CITES?
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A goverment organization that stands for convention on international trade in endangered species. regulates trade in threated wild plants and animal species.
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What are various measures taht would help conservation of fish?
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Monitoringof the stocks and reproduction rate. Having quotas for catches of species with low stock.banning of endangered animals, minimized fish size, banning drift nets
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