Sedimentation and Water Circulation in Green Mussel Farms
Entrapment of sediments and poor water circulation in the green mussel farms were among the issues cited by authorities that has resulted in mass mortality of green mussel in Samar, Philippines in the year 2006 and 2007. A hypothesis floated that sediments were trapped and water circulation was affected because of green mussel farms built using staking method. This study tried testing this hypothesis by observing several farms with various farming methodologies. It measured the volume of sediments and the water circulation using sediment traps and Eulerian method via drifter (drogue). There is no enough evidence to say that sediment accumulation is associated with the type of farming. Data analysis suggests that there is a possibility that amount of sediments is more related to the density of mussel in the farm. Farms with higher productivity have more deposits than farms using staking method. Water circulation was not also significantly affected by the kind of farming techniques used.