Shrimps Caught by Set Net in Different Mangrove Conditions in the Estuary of Sungai Kakap, West Kalimantan

Abstract

Mangrove ecosystem provides many benefits to local people both ecologically and economically. Unfortunately, the mangrove forest has been degraded, due to the increasing pressures of anthropogenic activities. Consequently, it would diminish most of the life supported by mangrove, and threaten the security of local people livelihood. This research was carried out to study the influence of mangrove plant conditions on shrimp catches in set nets and how this contribute to local management plan. The method applied for mangrove was transect line, and shrimps were collected with set net, and then they were related each other to analyze the influences. This study showed that links between mangrove plant conditions (area, density and coverage) and shrimp catch total and carapace length give positive regression. Significant positive correlations are shown by the relationship between percentage of mangrove area and number of Udang Ambai (Metapenaeus lysianassa) with 1.0-1.5 cm carapace length with a simple linear regression equation Y=23.5+0.3X (R²=0.62). The communities depend on mangroves and lives supported by them, though the people were not found very aware about ecology, functions, and threats of these resources. Therefore, the community involvement on the management of mangrove ecosystem and shrimp catch is required. Zoning through the participation of community is regarded as a major tool to achieve the goal of sustainable use of coastal resources.