Periphyton’s Chlorophyll-a Concentration in the Glass Substrate placed in the Salo River, Salo District, Kampar Regency

Abstract

Periphyton is one of microorganisms that serve as primary producer in the aquatic environment. The periphyton contain Chlorophyll-a that is used for photosynthesis activity. To understand the concentration of Chlorophyll-a in glass substrate the Salo River, a study has been carried out in April-May 2015. The Chlorophyll-a data are used as a basis to calculate the primary productivity in the Salo River. There were 3 stations, in each station the water and periphyton were sampled once/week, for a 4 weeks period. The number of glass sampled in each station is following Berkman and Canova 2007, there are 30, 15 and 9 pieces in Stations 1, Stations 2 and Stations 3 respectively. The periphyton samples are brushed from the surface of glass substrate (10 cm x 3 cm). The chlorophyll-a concentration in the glass substrate ranged from 2.574 mg/m2 – 5.514 mg/m2. The chlorophyll-a concentration indicates that the trophic status of the Salo River is oligotrophic.Keywords : Salo River, Periphyton, glass substrate, chlorophyll-a