The plankton community was studied twice a week from September 2006 to August 2007,
in a green mussel raft-cultured area, Si Racha Bay, in the Gulf of Thailand. Phytoplankton was
collected by filtering with a 20 μm plankton net and zooplankton was collected by vertical
hauling with a plankton net of 330 μm mesh size. Several hydrographical conditions were
measured in situ but nutrient analyses of water samples were carried out in the laboratory.