CD Skripsi
Struktur Komunitas Fitoplankton Di Perairan Mangrove Desa Sungai Rawa Kabupaten Siak Provinsi Riau
ABSTRACT
Mangrove river swamp village is one of the mangroves in Siak Regency,
Riau Province. This study aims to determine the structure of the phytoplankton
community in the mangrove ecosystem, which was conducted in April 2019.
Samples were taken 3 times, once / week, in 3 different regions. The results
found that there were 19 species of phytoplankton in mangrove waters of swamp
river villages. Phytoplankton consists of 4 (four) classes, namely:
Bacillariophyceae (14 types), Chlorophyceae (1 type), Cyanophyceae (3 types),
and Xantophyceae (1 type). The abundance of phytoplankton species in the
waters ranges from 5375 – 13550 cells/L. The results of the phytoplankton
species diversity index (H ') in the mangrove waters of Sungai Rawa Village
ranged from 2.9323-3.8107, the dominance index (C) ranged from 0.0757 -
0.1365 and the uniformity index (E) ranged from 0.7174-0.9323. Water quality
in the mangrove waters of Sungai Rawa Village is a temperature of 29-30ºC,
brightness 52-76 cm, pH 7, salinity 24.3-26.33 ‰, dissolved oxygen 5.03-6.13
mg/L, free carbon dioxide 2.50-3.28 mg/L, nitrate 0.08-0.16 mg/L and
phosphate in the range 0.09-0,17 mg/L.
Keywords: community structure, mangrove ecosystems, Bacillariophyceae
1) Student of the Fisheries and Marine Faculty, Universitas Riau
2) Lecture of the Fisheries and Marine Faculty, Universitas Riau
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