Correlation Between Ecological Status of Sedati Waters and Gonadosomatic Index of Short-Necked Clam ( Paratapes undulatus )

Abstract

Catching is one way to get Short necked-clam so the demand also increases. The Gonadosomatic Index (GSI) of short necked-clam is a study to maintain the availability of short-necked-clam in waters. Another thing that can be obtained from this study is to know its relation to the ecological status (quality of water, substrate, and the abundance of plankton) in the waters of Sedati, Indonesia. The strategy utilized in deciding the choose point is based on the purposive inspecting strategy did some time recently with attempting to take samples at a few point within the range of brief necked-clam angling ground. To decide the relationship of the environmental status with Gonadosomatic Record (GSI) used regression, and correlation is further illustrated by descriptive statistical analysis. Based on the regression analysis, water quality has a relationship to the Gonadosomatic Index (GSI) of short-necked clam either directly with a value of -0.1278 or through nutrients that are worth 0.6813. While the nutrient has a relationship to the Gonadosomatic Index (GSI) of -0.99583 and substrate of 0.2525. The results showed ecological status that correlates most strongly is plankton abundance of 94,39% (very strong) but negative correlated, with dissolved oxygen (DO) of 83,92% (very strong) and with the temperature of 62,98% (strong).

Keywords

• ecological health
• water quality index
• paratapes
• soil substrate
• coastal marine ecosystems