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Citation:

Ant Communities of West Slope of Mount Demula and Bomi Valley in Southeastern Tibet

  • Received Date: 2011-02-11
  • In order to reveal the ecological role of ant communities in southeastern Tibet, ant communities of 11 sample plots from Mount Demula and Bomi Valley were investigated with sample-plot and search-collecting methods. In total, 27 species belonging to 3 subfamilies and 10 genera of Formicidae are recognized, in which most are rare species. The results showed that the species numbers in the sample plots ranged between 0~11 (5.9 in average), the individual densities ranged between 0~1 706.2 heads·m-2(270.7 heads·m-2 in average), the diversity indexes ranged between 0.346 1~1.207 3 (0.795 3 in average), the evenness indexes ranged between 0.215 0~0.770 3 (0.474 6 in average), and the dominant indexes ranged between 0.383 5~0.811 9 (0.578 4 in average). The data showed that, in general, the individual densities decreased with the altitude rising. Species numbers from plots at middle position were lower than those at upper and lower positions of the mountain slope. No regular changes were found for the indexes of diversity, evenness and dominance, however, the evenness indexes showed a negative correlation with the dominant indexes. These phenomena showed that the diversity and stability of ant communities may be influenced by altitude, landforms and vegetation situations. Similarity analysis showed significant differences between ant communities from different plots, which well responsed to the significant difference in ecological habitats of Mount Demula.
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Ant Communities of West Slope of Mount Demula and Bomi Valley in Southeastern Tibet

  • 1. College of Forestry, Beijing Forestry University, Beijing 100083, China
  • 2. Key Laboratory of Forest Disaster Warning and Control in Yunnan Province, Faculty of Conservation Biology, Southwest Forestry University, Kunming 650224, Yunnan, China

Abstract: In order to reveal the ecological role of ant communities in southeastern Tibet, ant communities of 11 sample plots from Mount Demula and Bomi Valley were investigated with sample-plot and search-collecting methods. In total, 27 species belonging to 3 subfamilies and 10 genera of Formicidae are recognized, in which most are rare species. The results showed that the species numbers in the sample plots ranged between 0~11 (5.9 in average), the individual densities ranged between 0~1 706.2 heads·m-2(270.7 heads·m-2 in average), the diversity indexes ranged between 0.346 1~1.207 3 (0.795 3 in average), the evenness indexes ranged between 0.215 0~0.770 3 (0.474 6 in average), and the dominant indexes ranged between 0.383 5~0.811 9 (0.578 4 in average). The data showed that, in general, the individual densities decreased with the altitude rising. Species numbers from plots at middle position were lower than those at upper and lower positions of the mountain slope. No regular changes were found for the indexes of diversity, evenness and dominance, however, the evenness indexes showed a negative correlation with the dominant indexes. These phenomena showed that the diversity and stability of ant communities may be influenced by altitude, landforms and vegetation situations. Similarity analysis showed significant differences between ant communities from different plots, which well responsed to the significant difference in ecological habitats of Mount Demula.

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