Laju Produktivitas Primer di Perairan Rawa Kongsi Kecamatan Patumbak Kabupaten Deli Serdang Provinsi Sumatera Utara

Abstract

The Rate of Aquatic Primary Productivity (RAPP) is the formation of organic compounds from inorganic compounds with the aid of sunlight and chlorophyll. Kongsi Swamp is stagnant water system utilized by people for agriculture, livestock, fishing and waste disposal a negative effect. This study aims to know RAPP in Rawa Kongsi and to know RAPP relationship with chlorophyll-a and physical chemistry parameters of water. The study took place in February in March 2016. The methode used to determine the location of purposive sampling is divided into 4 stations based on different activities. The analysis is the analysis of water quality, chlorophyll-a, primary productivity and Pearson correlation. The results of water quality analysis showed moderately polluted Kongsi Swamp based on the average of DO 2,26 mg/L, levels trophic based on the value average of chlorophyll-a 2.458 mg/m3 including the category of low fertility (oligotrophic). The relationship between primary productivity with chlorophyll-a and chemical physics of water in Kongsi Swamp is very strong.