The natural vegetation of Babile Elephant Sanctuary, Eastern Ethiopia: Implications for biodiversity conservation

  • Anteneh Belayneh
  • Tamrat Bekele
  • Sebsebe Demissew

Abstract

A floristic analysis of the natural vegetation was carried out in the Babile Elephant Sanctuary (BES), in semi-arid part of eastern Ethiopia. A total of 75 quadrats, each 400 m2, were analyzed following a stratified sampling design. A total of 237 plant species, belonging to 155 genera and 57 families, were identified. Fabaceae was represented by the highest number of species (i.e., 36 species; 15.1%). Six community types were identified using the TWINSPAN program. These are: I. Tamarindus indica; II. Acacia robusta; III. Acacia seyal - Balanites aegyptiaca; IV. Acacia senegal - Acalypha fruticosa; V. Terminalia brownii - Boswellia neglecta and VI. Acacia bussie - Grewia tenax types. A total basal area of 17.8 m2/ha, and a density of 385 ± 114.2 (S.E.) individuals ha-1 were calculated for 67 woody species (22 trees, 36 shrubs and 9 climbers); the mean density of trees was 32 ± 9.96, shrubs 619 ± 203.3 and climbers 315 ± 103.4 individuals ha-1. A very high impact was imposed by the invasive species Lantana camara, which had a density of 2794.6 individuals ha-1. In general, the vegetation of the sanctuary was threatened by human encroachment, intensification of commercialized farming and invasive species. Therefore, as the habitat for the only known population of the isolated, ecologically distinct subspecies population of the elephant (Loxodonta africana orleansi), the BES should be afforded the highest conservation priority as a matter of urgency.

Keywords/phrases: Babile Elephant Sanctuary, Community types, Conservation, Floristic analysis, Species diversity

Ethiop. J. Biol. Sci., 10(2): 137-152, 2011

Author Biographies

Anteneh Belayneh
Department of Biology, Debre Berhan University, P.O. Box 293, Debre Berhan, Ethiopia
Tamrat Bekele
Faculty of Life Sciences, College of Natural Sciences, Addis Ababa University, P. O. Box 3434, Addis Ababa, Ethiopia
Sebsebe Demissew
Faculty of Life Sciences, College of Natural Sciences, Addis Ababa University, P. O. Box 3434, Addis Ababa, Ethiopia
Published
2013-06-15
Section
Articles

Journal Identifiers


eISSN: 1819-8678