The effect of distance of floating karamba on placement of phytoplankton abundance in coastal waters of Sathean Village, Langgur-Tual Regency

The condition of water will also affect the distribution pattern or distribution of phytoplankton both horizontally and vertically, so that it will affect the abundance of phytoplankton which in turn affects the primary productivity value. The waters of Sathean Village are some floating net cages (KJA) owned by both the community and the company. The existence of economic activities in the waters of Sathean Village, it results in disruption of the balance of the aquatic environment which ultimately affects the growth of phytoplankton in these waters. The study was conducted using an experimental method with a factorial completely randomized design. The first research factor was the distance of KJA placement with 3 sub-factors, namely 26 m distance; 38 m; and 52 m. The second research factor is the depth of sampling consisting of 4 depths namely 0 m; 2 m; 4 m; and 6 m. The test is done 3 times. Station B, a distance of 38 m from the beach 38 from the beach with a sampling depth of 0m, 2m, 4m and 6m, and 3 replications. The main parameters observed were phytoplankton abundance, diversity index, uniformity index, and dominance index. Meanwhile, the supporting factor is water quality.