Study Ecology of Dragonfly (Odonata) in North Sumatera, Indonesia
Keywords:
Dragonfly, Odonata, Diversity, Abundance, Environmental factorsAbstract
This research aims to determine the diversity, abundance, dominance, and evenness of dragonflies (Odonata) as well as environmental factors in two different habitats, namely rice fields and riverbanks. Sampling was conducted purposively using insect nets. Seven species of dragonflies were identified, with Orthetrum sabina being the most abundant species. The diversity index in rice fields (H′ = 1.34) is slightly lower compared to riverbanks (H′ = 1.38). The values of abundance, dominance, and evenness show small differences between habitats. Environmental factors such as temperature, humidity, and wind speed influence the distribution of dragonflies, with riverbanks having more optimal microclimate conditions. These results affirm that both habitats support dragonfly diversity and are important to maintain as indicators of ecosystem health.
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