Biology- Controlling the effects of human activities
- Created by: GraceJackson2
- Created on: 06-11-20 16:09
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The Galapagos Islands
Human activities
- Habitat disturbance- more waste and pollution (oil spill in 2001), building and conversion of land for agriculture has lead to fragmentation.
- Over-expolitation of resources- Whaling boats and fur traders, a boom for exotic fishinghas depeleted populations.
- Effects of introduced species- Alien species can eat native species, destoy their habitatas or bring disease. E.g cats, goats, red quinine.
Strategies used for conservation
- Preventing the introduction
- Increasing number of researchers and tourists.
- Increased interest from fishing industry- Krill are used to make nutritional supplements in vast quantities but this makes it diffcult for natural predators to find them elsewhere.
- Whaling.
- Pollution, hunting and poaching- Albatrosses and petrels are threatend by egg poaching, habitat destruction and introdution of non-native predators.
- Long-line fishing- birds try to eat their prey and swallow the hooks.
Strategies used for conservation
- To avoid over-expolitation, there is a trigger level catch size in…
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