Impact of urbanization on the ant diversity: A case study on teak plantation in South Sulawesi, Indonesia

Abstract

Abstract Ant communities play an important role in a teak agroecosystem. However, ant diversity is affected by urbanization. The purpose of this study was to determine the diversity and composition of ants in teak plantations in urban and rural areas. This study was conducted in July 2022 at three plantations in two regencies (Gowa and Maros) and one city (Makassar) in South Sulawesi, Indonesia. Gowa and Maros are located in rural areas, while Makassar is located in urban areas. Ants were sampled using a pitfall canopy. At each plantation, 20 trees were sampled randomly for pitfall installation. Ants were identified to the genera level and morphospecies. Ant’s diversity was analyzed using the Shannon Wiener, Simpson, and Evenness index and analysis of dissimilarity (Anosim). Total 273 individual ants samples were collected from 10 species and four subfamilies from three teak plantations in South Sulawesi. Crematogaster sp.1 was the most abundant ant among all the collected samples. Based upon the different indexes, the highest ant diversity was found in Gowa followed by Maros, while the lowest diversity was found in Makassar. The level of ant dominance in Makassar was higher than other two studied areas. The highest species evenness index was also found in Gowa and followed by Maros. The species composition in the three teak plantations was also not similar. Each location had their unique species composition than the other locations. This indicated that urbanization causes negative impacts on ants diversity and evenness as well as increase the dominance of ant species in teak plantations.

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