PENERAPAN TEKNOLOGI HIDROAKUSTIK UNTUK PENDUGAANKELIMPAHAN DAN SEBARAN SPASIAL ZOOPLANKTON DIPERAIRAN TAMAN NASIONAL SEMBILANG, SUMATRA SELATAN

Sembilang National Park (TNS) has high primary productivity because it is dominated by mangrove ecosystems. The high primary productivity is indicated by the high abundance of zooplankton as an indicator of waters. The abundance of zooplankton can be determined by conventional methods using bongonet and hydroacoustic methods. This study aims to estimate the abundance and analyze the distribution of zooplankton, and to know the relations between the abundance of zooplankton acoustically and the abundance of zooplankton used bongonet with a simple linier regression. This study was conducted from October 24, 2020 to October 29, 2020 around TNS waters. The results showed that the acoustic density of zooplankton in the waters around the Sembilang National Park ranged from 106 - 1911 Ind/m3 . While the abundance of zooplankton using bongonet ranges from 70 – 346 Ind/m3 . Spatial distribution of zooplankton spreads from breech estuary waters to Alagantang waters. The abundance of zooplankton using bongonet has an effect of 63% on the abundance of zooplankton using acoustics where the correlation coefficient value (R = 0.79) describes a positive and strong relationship.