DefinePK

Abstract

Mangrove is an important ecosystem which supports fish resources diversity and abundance. However, it’s impact on the economically important fish such as Red Snapper is not well understood. This research aimed to study the fluctuation of Red Snapper yields, study the dynamic of mangrove coverage and its condition, and analyze the effect of mangrove dynamic to the yield of red snapper in the northern coastal area of Central Java. The research was conducted from November 2017 to February 2018, while the northern coastal area of central java was selected as the area of interest. Data collection was conducted by literature study in the Fisheries and Marine Services of Central Java to obtain data of mangrove condition (good, moderate, poor) and coverage and catch of Red Snapper. The primary data utilized in this research were obtained from the Statistics Book of Marine, Coastal and Small Islands and the Statistic Book of Capture Fisheries between 2009 and 2016. Data analysis was conducted by regression through weighting of mangrove condition. The result showed that the yield of Red Snapper was fluctuated ranging from 508.5 tons to 4,242.9 tons. There were also fluctuations on the mangrove coverage's based on its conditions ranging from 9,844.8 to 12,877.0 ha. Regression analysis showed that weighted mangrove coverage has significant negative impact on the yield of Red Snapper in the northern coastal area of Central Java. The best estimator for the relationship was power regression model, with the equation ln(y) = 4.08.e40 - 9.58.ln(x) and determination coefficient of 61.3%.