ENWC201 Lecture Notes - Lecture 6: Carolina Parakeet, Hawaiian Rail, Passenger Pigeon
15 Jun 2018
School
Department
Course
Professor
Species lost forever:
Passenger pigeon
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Carolina parakeet
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Stellar's sea cow
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Labrador duck
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Health hen
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The great auk
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The hawaiian rail
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Overexploitation: living off the land or seas in a manner that can not be
sustained
The hunting, trapping, collecting, and fishing of wildlife at unsustainable
levels
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Biggest threat is to marine systems
Second only to habitat loss and destruction for terrestrial birds, mammals,
and plants
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Temperate terrestrial systems
Where we live
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Hunting in the US
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We have "mostly" well controlled management
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Exploitation "necessary" in modified environments
Altered vegetation
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Limited disease
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Removed predator species
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Hunting in the US
Prairie dog hunting
2% of original prairie dog species left
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Rattle snake roundups
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Hunting in other nations
Sometimes well controlled
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Hunting/wildlife trade
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Tropical terrestrial systems
40--->60% people
60% of the world's people will live here eventually
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Timber extraction = access
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The bushmeat trade
No longer sustainable
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Local consumption to regional markets
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Substance hunting/bushmeat trade
Defaunation of tropical forests
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Unintended side effects
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Medicine trade
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Pet trade
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Who is to blame?
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The USA is the second largest importer of wildlife products and a large
destination for the illegal pet trade. Every month, many tons of bushmeat
arrives from Africa. During 2001–2005, over 11,000 specimens, i.e. live
animals and wildlife products of birds, reptiles, marine turtles, corals and
mammals were seized in shipments from Costa Rica, Dominican Republic,
El Salvador, Guatemala, Honduras and Nicaragua.
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Marine ecosystems
Well documented
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Overfishing
When big fish are overfished, we fish the small fish
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Factory trawler
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Overexploitation
Tuesday, March 13, 2018
3:34 PM
