Mapping of Physical and Chemical Parameters of Seaweed Cultivation Area in Geranting Island Waters

Seaweed is a marine resource that has very high value. In addition, seaweed cultivation is easy because it takes a relatively short time, requires a small fee, and also the need for seaweed continues to increase. This study aims to determine the relationship between each parameter of both physical and chemical marine seaweed cultivations in the location and present it in the form of maps. The study was conducted in the waters of Geranting Island, Belakang Padang District, Batam City. in this study, parameters were measured directly in the field and using interpolation to determine the value of the surrounding parameters. The parameters in this study are temperature, dissolved oxygen (DO), pH, and Visibility. The final results of this study are maps of Physical and Chemical Parameters of the Sea between stations. The temperature obtained from stations 14 ranged from 28.1 29.7 0C, the results of the Visibility ranged from 1.5 2.5 m, the DO values ranged from 21.7 29 mg/L, and for pH values ranged between 4.8 4.9. According to the field data temperature parameters at all stations, and visibility parameters at stations 2, 3, 4 are suitability with seaweed cultivation area. Based on the field data visibility parameters at Station 1, pH, and DO parameters at all stations are not suitable with seaweed cultivation criteria. Information of the distribution of physical and chemical parameter values of the waters in the Geranting Island seaweed cultivation can be seen in the resulting maps.