Struktur Komunitas dan Habitat Odonata di Kawasan Wisata Waduk Jatibarang Semarang

Abstract

Jatibarang Reservoir is a freshwater dam in Semarang which has different habitat types. The different of habitat types can affect biodiversity, including dragonflies (odonata). Dragonflies are insects that have an important function as a bioindicator of water quality and play a role in maintaining the balances of tropic levels in the food chain. The study aims to determine the abundance, diversity, evenness, similarity and distribution of dragonflies and to determine the abiotic and biotic factors of each habitat type in Jatibarang Reservoir tourist area. The study used Point Count method. The results showed that there were 22 types of dragonflies consisting of 7 different families. The dragonfly which has the highest abundance in the total number of individuals is Eupahea variegata with an index of 16.77%. Diversity of dragonflies in low and medium categories. The evenness level of dragonfly species is evenly. The similarity of species has a low to high degree of similarity. The distribution of dragonflies are clumped and regular. The differences in abiotic and biotic conditions in each habitat affect the structure of dragonfly community.