Unit 4: Aquaculture - Management of Marine Production Systems
- Created by: rosieevie
- Created on: 24-05-15 16:12
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- Management of Marine Production Systems
- Catch Quotas
- Limits on total weight of fish that can be landed
- Good for fish found in shoals of single species
- Total quotas divided up with individual quotas for each fishing boat
- Fish may already be dead and have to be thrown back if over quota
- Minimum Catchable Size
- Less juvenile fish caught
- Size of net mesh controls the minimum size of fish caught
- Fishing Effort Limits
- Sets limits on size of nets, boats or engines and number of days spent fishing
- Fishing fleet too large - compensation scheme = fishermen paid to sell boats and stop fishing
- No-Take Zones
- Completely bans part of an area - breeding populations can develop
- Surplus young produced will spread out and boost fishable population
- Closed Seasons
- Bans on certain times of year for recovery e.g. breeding seasons
- Protected Individuals
- Individuals known to be good breeding animals protected
- Marked so if they are caught again they will be released
- Population Seeding
- Young fish raised in captivity and released when they have a better chance of survival (low mortality rate)
- Catch Quotas
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