STRUKTUR KOMUNITAS CACING TANAH (Oligochaeta) DI DUSUN GUNUNG LONCEK DESA TELUK BAKUNG KABUPATEN KUBU RAYA

Abstract

Dusun Gunung Loncek has peatland vegetation in which there are oil palm plantations, local rubber plants and other wild plants. These habitat differences can affect the community and population of earthworms. This study aims to determine the structure of the earthworm community in Dusun Gunung Loncek and the environmental factors that affect it. This study was conducted in August 2021. Each station made 5 plots randomly measuring 5x5 m, each plot was made squared 1x1 m as many as 5 pieces and placed randomly. All earthworms in the square were taken and collected using the hand sorting method with a depth of 0-10 cm, 10-20 cm and 20-30 cm. Based on the results of the study, three species of earthworms were found (Pheretima hawayana, Megascolex sp., and Perionyx excavatus). Pheretima hawayana has the highest density while Megascolex sp.has the lowest density. The highest diversity index was found at station II (H’=0.833) and the lowest diversity index was found at station V (H’=0.623). The results of PCA analysis can be found that the physical and chemical factors that most influenced the presence of earthworms at each research station were soil moisture, dust fraction, C-organic, and soil temperature.