The suitability of Segara Anakan waters, Cilacap, Central Java as cultivation area of Polymesoda erosa based on primary productivity using satellite image

Abstract

Abstract. Herawati VE, Hartoko A, Suminto. 2012. The suitability of Segara Anakan waters, Cilacap, Central Java as cultivation area of Polymesoda erosa based on primary productivity using satellite image. Bonorowo Wetlands 2: 41-51. Segara Anakan waters, Cilacap, Central Java, is a natural habitat of totok shells (Polymesoda erosa) of high economic value. However, the sustainability of these protein sources is threatened due to habitat degradation and over-harvesting. This study aims to (i) analyze the suitability of Segara Anakan Lagoon to cultivate the toktok shells, as a conservation effort, based on the aspect of primary productivity and chlorophyll-a; (ii) to analyze the suitability of Segara Anakan waters to cultivate the totok shells based on field data and SPOT satellite image data, i.e., chlorophyll a, water surface temperature, total suspended solids, pH, dissolved oxygen, salinity, as well as nitrate and phosphate content. The basic concept of this research is combining SPOT satellite image analysis and direct field measurement of some primary productivity parameters in Segara Anakan waters to know the suitability for thokthok shells cultivation. Based on scoring and suitability level, stations 1 and 3 (in the western estuary of Segara Anakan lagoon) are " Suitable on condition" (Sesuai Bersyarat) for the cultivation of totok shells, covering an area of 326,035039 ha. While stations 2, 4, 5, 6, and 7 (other locations) are " Not Suitable" (Tidak Sesuai) for the cultivation of totok shells, covering an area of 557,057573 ha.