Relationship between the abundance of chlorophyll-a from Aqua Modis Satellite Imagery data with the abundance of phytoplankton in seawater and in the stomachs of Indian mackerel (Rastrelliger kanagurta) in East Kalimantan waters

East Kalimantan's fishery resources can be found along the waters of the Makassar Strait to the Sulawesi Sea. Oceanographic parameters are very influential factors on fishery resources, especially fish catches. Chlorophyll-a is closely related to the primary productivity of the environoment and it is capable of sustaining large amounts of phytoplankton biomass. Sampling of phytoplankton was done in the field by seawater filtration and samples of phytoplankton were collected from the stomach contents of Indian mackerel (Rastrelliger kanagurta), while the data on chlorophyll-a distribution was the result of SeaDAS data processing in form of Ancillary Satellite Image Modis. The highest abundance of phytoplankton from seawater sampling was found in Station 3 in amount of 206,010 specimens/liter where the Bacillariophyceae class was represented by 17 species out of 29 species found. The highest abundance of phytoplankton in the stomachs of Indian mackerel (Rastrelliger kanagurta) was found in the specimens caught at Station 3, with as many as 252.0 specimens/liter, where Bacillariophyceae class contained 18 species out of 28 phytoplankton species found. The data obtained from the Modis Ancillary Image Satellite and processed with the SeaDas Program, showed the highest abundance of chlorophyll-a is at Station 3, with as much as 0.9389626 mg/m3. The fluctuation of chlorophyll-a abundance was in accordance with the fluctuation of phytoplankton abundance from the result of seawater sampling and fish stomach sampling.