BIODIVERSITY OF ANTS (HYMENOPTERA: FORMICIDAE) BASED ON ELEVATION GRADIENT AT SAGO MALINTANG NATURE RESERVE, LIMA PULUH KOTA REGENCY, WEST SUMATRA

RAHMAIZI, TETA (2022) BIODIVERSITY OF ANTS (HYMENOPTERA: FORMICIDAE) BASED ON ELEVATION GRADIENT AT SAGO MALINTANG NATURE RESERVE, LIMA PULUH KOTA REGENCY, WEST SUMATRA. Diploma thesis, UNIVERSITAS ANDALAS.

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Abstract

The study of Ant Species Biodiversity (Hymenoptera: Formicidae) at Sago Malintang Natural Reserve, Lima Puluh Kota Regency, West Sumatra were conducted on September 2019-September 2021 to identify the species number and determine the diversity index at the study site, applied at different types of elevation gradient (0-1000, 1000-1500, 1500-2000 m.asl) used Standarized Quadra Protocol Methods. A total number of 41 species were collected belonged to five subfamilies, 10 tribes, 24 genera, and 1497 individuals. The largest number of individuals species level were Carebara cf. affinis at low elevation along with Lophomyrmex bedoti, at low and middle elevation, and Pheidole quinata at high elevation. There were several species collected all along the elevation, i.e Nylanderia sp. 1 of HH, Pheidole sp. 3 of HH, and Ponera sp. of HH. Myrmicinae became the major subfamily with most genera and species acquisition collected. About three new species were found, namely Pheidole clypeocornis, Pheidole lokitae, and Phedole quinata. The diversity index of each elevation was categorized as moderate (from low to high H’ = 2,28; 1,76; 2,06). Evenness index was denoted as fairly even at low to middle elevation, (E = 0,70, 0,61) and nearly even at high elevation (E = 0,76). The percentage of Similarity Index was categorized as low percentage (QS = <50%). A various value of the species diversity was convinced from several factor such as temperature, humidity, vegetation, food resources, and the presences of human activity at the study site which may affected the diversity of ant species.

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