Abstract
Plankton community was studied at the Lake of Segara Anak, Lombok Island, Indonesia. The purpose of this study was to describe community structure of plankton and to explore spatial and temporal pattern. The results show there were 39 species of phytoplankton and 5 species of zooplankton. Species diversity and similarity indices of phytoplankton were 3.064 and 0.029 respectively, while the species diversity and similarity indices of zooplankton were 1.352 and 0.060 respectively. Statistical analysis showed no significant difference spatially and temporally on the species richness, abundance, diversity index and similarity index of zooplankton and phytoplankton. Significant difference was only found on the average of species richnes and diversity index of zooplankton between the surface and the bottom of the lake.
Highlights
Plankton community was studied at the Lake of Segara Anak, Lombok Island, Indonesia
The results show there were 39 species of phytoplankton and 5 species of zooplankton
Yu. Lake, a large ologosaline lake in arid northwestern China
Summary
Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataran. Telah dilakukan penelitian tentang komunitas plankton di Danau Segara Anak, Pulau Lombok, Indonesia. Danau tersebut adalah danau vulkanik tertinggi di Indonesia. Tujuan penelitian ini adalah untuk mendeskripsikan struktur komunitas plankton dan mengeksplorasi pola perubahan komunitas secara spasial dan temporal. Hasil penelitian ini mengungkapkan bahwa komunitas plankton terdiri dari 39 spesies fitoplankton dan 5 spesies zooplankton. Indeks keanekaragaman dan keseragaman spesies fitoplankton berturut-turut 3,064 dan 0,029, sedangkan indeks keanekaragaman dan keseragaman spesies untuk zooplankton berturut-turut 1,352 dan 0,060. Hasil analisis statistik menunjukkan tidak terdapat perbedaan signifikan secara spasial dan temporal pada kekayaan spesies, kemelimpahan dan indeks keanekragaman fitoplankton dan zooplankton di Danau Segara Anak. Perbedaan signifikan hanya terlihat pada kekayaan spesies dan indeks keanekaragaman spesies zooplankton antara bagian permukaan dan dasar danau. Kata kunci : keanekaragaman, fitoplankton, zooplankton, Danau Segara Anak
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