Analisis Perbandingan Produktivitas Primer pada Ekosistem Terumbu Karang dan Lamun di Perairan Melahing, Bontang

Abstract

The purpose of this study was to determine the differences of primary productivity between coral reef and seagrass ecosystems in the Melahing waters, Bontang, based on tidal conditions. This research was conducted from July to September 2017. Determination of primary productivity was carried out using bright and dark bottles method. Data collection was carried out directly in the field and in the Laboratory. Data analysis used Multivariate Test and T-Test. The results of the study showed that the water quality parameters in the Bontang City met quality standards that referred to KEMENLH NO. 51 of 2004. Primary productivity was found rhigher in coral reef ecosystems compared to seagrass ecosystems, yet there wasno significant difference. Higher abundance of phytoplankton was found in coral reef ecosystems compared to seagrass ecosystems, but there was no significant difference. There was no significant differences among stations for water quality parameters, GPP, NPP and phytoplankton abundance. Yet, temperature, orthophosphate, and total nitrogen showed significant differences between periods of high tide and low tide