Africa: Difference between revisions

[[File:Zebras, Serengeti savana plains, Tanzania.jpg|left|thumb|Savanna at Ngorongoro Conservation Area, Tanzania]]

Africa boasts perhaps the world's largest combination of density and "range of freedom" of wild animal populations and diversity, with wild populations of large carnivores (such as lions, hyenas, and cheetahs) and herbivores (such as [[African buffalo|buffalo]], elephants, camels, and giraffes) ranging freely on primarily open non-private plains. It is also home to a variety of "jungle" animals including snakes and primates and aquatic life such as crocodiles and amphibians. In addition, Africa has the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna.

[[File:Mauritius beach.png|thumb||Tropical beach in Trou-aux-Biches, Mauritius]]

Africa has over 3,000 protected areas, with 198 marine protected areas, 50 biosphere reserves, and 80 wetlands reserves. Significant habitat destruction, increases in human population and poaching are reducing Africa's biological diversity and arable land. Human encroachment, civil unrest and the introduction of non-native species threaten biodiversity in Africa. This has been exacerbated by administrative problems, inadequate personnel and funding problems.<ref name="environmentalatlas"/>

Deforestation is affecting Africa at twice the world rate, according to the United Nations Environment Programme (UNEP).<ref>[http://www.africanews.com/site/list_messages/18831 Deforestation reaches worrying level – UN] {{webarchive |url=https://web.archive.org/web/20081206051452/http://www.africanews.com/site/list_messages/18831 |date=December 6, 2008 }}. AfricaNews. 11 June 2008</ref> According to the University of Pennsylvania African Studies Center, 31% of Africa's pasture lands and 19% of its forests and woodlands are classified as degraded, and Africa is losing over four million hectares of forest per year, which is twice the average deforestation rate for the rest of the world.<ref name="environmentalatlas"/> Some sources claim that approximately 90% of the original, virgin forests in West Africa have been destroyed.<ref>[http://www.afrol.com/features/10278 Forests and deforestation in Africa – the wasting of an immense resource] {{webarchive |url=https://web.archive.org/web/20090520182556/http://www.afrol.com/features/10278 |date=May 20, 2009 }}. afrol News</ref> Over 90% of Madagascar's original forests have been destroyed since the arrival of humans 2000 years ago.<ref>{{NatGeo ecoregion|id=at0118|name=Madagascar subhumid forests}}</ref> About 65% of Africa's agricultural land suffers from soil degradation.<ref>[http://www.independent.co.uk/news/world/africa/nature-laid-waste-the-destruction-of-africa-844370.html "Nature laid waste: The destruction of Africa"], ''The Independent'', 11 June 2008.</ref>