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Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
Under the highest-emission scenario, many countries would see substantial reductions in seafood available from exclusive economic zones by 2050. [1]Fisheries are affected by climate change in many ways: marine aquatic ecosystems are being affected by rising ocean temperatures, [2] ocean acidification [3] and ocean deoxygenation, while freshwater ecosystems are being impacted by changes in ...
The journal was established in 1921, producing its first issue in 1922, as an in house journal of South Africa's National Botanical Institute. The journal was formally known by the name Bothalia alone, from 1922 to 2014 when the title was expanded to better reflect the role of the South African National Biodiversity Institute. [4]
The National Biodiversity Assessment (NBA) is recurring project by the South African National Biodiversity Institute in collaboration with the Department of Environmental Affairs and several other organisations to assess the state of South Africa's biodiversity over time as an input for policy and decision making where the environment may be affected.
Ninety percent of Africa's population requires wood to use as fuel for heating and cooking. As a result, forested areas are decreasing daily, as for example, in the region of equatorial evergreen forests. According to the United Nations Environment Programme, Africa's desertification rate is twice that of the world's. [4] Deforestation of ...
The African Journal of Ecology (formerly East African Wildlife Journal) is a quarterly scientific journal focused on the ecology and conservation of the animals and plants of Africa. [2] It is published by Blackwell Publishing in association with the East African Wildlife Society .
The environmental impact of fishing includes issues such as the availability of fish, overfishing, fisheries, and fisheries management; as well as the impact of industrial fishing on other elements of the environment, such as bycatch. These issues are part of marine conservation, and are addressed in fisheries science programs.
The African Journal of Aquatic Science is a peer-reviewed scientific journal covering research in the aquatic sciences in Africa. It was established in 1975 as Journal of the Limnological Society of Southern Africa and renamed in 1989 as the Southern African Journal of Aquatic Sciences , before obtaining its current name in 2000.