Klorofil-a dan Struktur Komnitas Fitoplankton Di Perairan Muara Sungai Riau, Kota Tanjungpinang, Kepulauan Riau

Abstract

The activities of local Community such as river transportation, housing andagriculture around Riau River have been affected the water quality of Riau RiverEstuary. Survey Method was applied in this research to describe Chlorophyll-aconcentration and Phytoplankton structure at Riau River Estuary. The average ofChlorophyll-a concentration was 3.77 μg/L. Species composition and abundance ofPhytoplankton were recorded 22 species from Bacillariophyceae class and 3 speciesfrom Dinophyceae with 234.647 cell/L of abundance average. Based on Chlorophyll-a concentration and Phytoplankton abundance could be indicated that Riau RiverEstuary has been categorized into bad eutrophication.

Keywords: chlorophyll-a, phytoplankton, Riau River, Tanjungpinang