ZIMSEC O Level Geography Notes: Natural Resources: Fishing: Problems faced by sea fishing industry
- The sea fishing industry in Southern Africa faces a number of problems which include the following.
Over-exploitation of marine resources particularly fish.
- Fishing has increasingly become an important source of income and employment for many people in the region.
- As the number of fishing companies increase and the size of nets become smaller, young fish are also caught, before maturing to breed.
- Overfishing is therefore a common problem in all the fisheries of Southern Africa.
- Of special note are the prawns of the Mozambique Channel and several fish species in the Agulhas fishing bank.
Inappropriate fishing methods
- This includes small mesh nets and dynamite fishing for lobsters are major threat to the sustainability of the fishing industry in Southern Africa.
- Mosquito nets are are often used and these have a particularly small mesh size
- Fish diseases affect fish in most coastal areas.
- These at times wipe out whole species.
- Fish piracy from foreign trawls have over-fished the hake of the coastal of South Africa in recent years.
- In Mozambique the majority of the fishing companies are foreign and operate on license, with little regard for sustainability.
- Change of the habitat has at times affected fish spawning or breeding negatively in some areas.
- In Namibia, dredging along the coastline for diamonds has destroyed the spawning grounds for lobsters.
- In the Agulhas Bank, pollution and siltation have also altered the spawning or breeding environment for most fish species.
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