Impact of Anthropogenic Processes on Sustenance of the Itigi-Sumbu Thicket Ecosystem Services in Tanzania
الملخص
This study aimed to assess the impact of human activities on the role of the Itigi-Sumbu Thicket Ecosystem (ISTE) of the Tanzanian portion, as an ecosystem services provider. Specifically, the study worked to: a) identify the major anthropogenic processes that impact the envisaged delivery of ISTE services; b) determine flora and fauna species composition and distribution; c) evaluate current species and habitats; and d) identify and evaluate the role and current status of ISTE in ecosystem services delivery. The study area was stratified according to the identified main land use categories. The modified Whittaker method was adopted in data collection. The vegetation could be categorised mainly as natural or modified habitat forms of either thicket, scrub or open woodland, the modified habitat leading to either or some combinations of human settlements, agricultural land and mining areas. A total of 406 and 218 flora and fauna species were recorded, respectively. As far as conservation status is concerned, five flora and four fauna species were recorded, calling for concern over genetic erosion in many of their populations. Also, four exotic plant species with invasive, allelopathic and phytotoxic properties were encountered. It could be concluded that ISTE is rich in species diversity; nevertheless, in the general land, the habitats were mostly dominated by a few species. A human population influx was projected in the near future following the stabilisation of gold mining and cashew farming activities, leading to further rapid depletion of the already degraded resources. The natural habitats, therefore, need to be conserved
التنزيلات
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