The community structure of epiphytons on Utricularia sp. And Hydrilla sp. plants at Situ Alam FMIPA Universitas Indonesia, Depok, West Java

Water plants will affect abundance and diversity of epiphytons in the community structure. The purpose of this research is to know the difference between the community structure of epiphytons on Utricularia sp. and Hydrilla sp., also periphytic planktons at Situ Alam FMIPA UI. Abundance and diversity of epiphytons community are the main discussion in this research. Research was carried out from March 2018 until May 2018. Using the purposive sampling method, samples were taken from Utricularia sp. and Hydrilla sp. Each sample was taken three times, one repetition, once every 2 weeks. Research showed that 67 genera, including 1 planktonic genus were found on the object glass. Utricularia sp. had higher abundance of epiphytons (84609 cells/mL) than Hydrilla sp. (74392 cells/mL). Both diversity indices are categorized as low diversity (H' < 2.302). Different diversities were found between epiphytons on both plants (P < 0.05), but there was no difference between abundance of epiphytons on both plants (P > 0.05).