Suitability of seaweed cultivation areas on serangan island, denpasar city, bali

Seaweed cultivation is an alternative used in coastal areas. It is necessary to increase seaweed production because of the high carrying capacity and potential seaweed cultivation areas. The seaweed cultivation on Serangan Island continues to be pressured by the development of tourism and human activities. This study aims to analyze the suitability of the seaweed cultivation area in Serangan Island. The variables used in this study are water conditions such as sea surface temperature, salinity, total suspended solids, and dissolved oxygen—the data obtained through processing Landsat 8 imagery in January and May 2020. The method used is scoring and overlaying all variables, which are then analyzed spatially. The results showed a suitable area covering 616 Ha dominantly and the appropriate regions for 1,52 Ha, located in several parts of the northern and southern waters of Serangan Island in the rainy season. Whereas in the dry season, suitable areas are covering 223 Ha located in 31 grids in the northern, eastern, southern, and southwestern parts of Serangan Island, quite ideal for 392 Ha in 72 grids dominantly and unsuitable for 2,52 Ha located in part east and west grid of Serangan Island waters.