STRUKTUR KOMUNITAS FITOPLANKTON DI DANAU TOBA, SUMATERA UTARA
ABSTRACT: Lake Toba is the
largest lake in Indonesia, located in the Province of North Sumatra. Lake Toba
is used to aquaculture, agricultural, tourism, and residential areas. These
activities will produce organic and anorganic matter that can affect water
quality and can cause eutrophication. Some indicators of eutrophication are an
increase in phytoplankton biomass and changes in phytoplankton community
structure. The aim of this study was to describe the phytoplankton community
structure in Lake Toba. This study was conducted on 20-24 October 2014 at 23
stations around the Samosir Island, Lake Toba. The results showed that the
phytoplankton abundance ranged 216-68.319.716 cells/m3. The phytoplankton
composition consists of 35 genera from four classes: Cyanophyceae,
Chlorophyceae, Bacillariophyceae, and Dinophyceae. Chyanophyceae is a dominant
phytoplankton groups based on the composition of abundance (>40%). Structure
of phytoplankton communities in Lake Toba dominated by Anabaena.
Penulis: Arif Rahman, Niken
Tunjung Murti Pratiwi, Sigid Hariyadi
Kode Jurnal: jppertaniandd160074