Over the past decade, more than 13 million ha of tropical forest was cleared every year, and the largest proportion of this is the tropical dry forest type ( [Mooney et al., 1995] and [Bawa et al., 2009]). Covering 42,000 ha, Arabuko Sokoke Forest (ASF) is one of the largest remaining protected fragments of a coastal dry forest mosaic in East Africa that once stretched from southern Somalia to northern Mozambique. It is a Key Biodiversity Area (Eken et al., 2004), within the Coastal Forests of Eastern Africa Biodiversity Hotspot, one of 34 such hotspots that are considered as priority areas for conservation among the world’s natural resources ( [Myers et al., 2000] and [31]). Arabuko is home to 19 IUCN Red Listed species (6 birds, 5 mammals, and 8 plants) (CEPF, 2005). This unique concentration of threatened species is probably due to long isolation and a markedly variable habitat (Burgess et al., 1998).
The main forest can be divided into three vegetation types, depending on the dominant tree species:Brachystegia spiciformis L. woodland, Cynometra webberi L. thicket, and mixed forest (formerly dominated by Afzelia quanzensis L.). There is also a very small strip of mangrove trees detached from the main dry land forest at Mida Creek to the north east. All these vegetation types have been threatened by logging in the past because each has unique types of timber for various construction, carving, furniture, fuel and medicinal purposes (Gordon and Ayiemba, 2003). Agriculture in the forest’s surroundings is unproductive because of poor soils and frequent elephant invasions, thus increasing local reliance on the forest.
No comments:
Post a Comment