Soil fauna community structure across land management systems of Kenya and Tanzania

Citation:
Ayuke FO, Karanja NK, Wickama J, Awiti A, Hella J. Soil fauna community structure across land management systems of Kenya and Tanzania. Kigali, Rwanda; 2007.

Abstract:

Changes in soil fauna communities were studied across land use systems in parts of Lake Victoria basin in Kenya and Tanzania. The study sites included primary forest, secondary forest, plantation forest, fallow and arable lands under different cropping systems and intensity, with cultivation in some systems ranging from one to more than 40 years. In Kenya, a total of 47 species were recorded across the land use systems while in Tanzania, a total of 36 species were recorded of which 25 species were unique to the forest soils. Isopterans were the most abundant of the total macrofauna groups observed across the two benchmark sites, constituting between 38 and 46%. Forest disturbance, cultivation and higher levels of intensification had a substantial effect on macrofauna diversity. This study has demonstrated that macofauna species and their density declined, particularly when natural forest was disturbed, cleared or cultivated, and when agro-chemicals were applied in the cropping systems.

Key words: Community structure, diversity, land use system, soil fauna

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