Abstract
A model for predicting the distribution of the habitat of Japanese hard clam Meretrix lamarckii was developed, taking the life history between a larva and an adult clam into account. The coupling was made with the contour-line-change model by proposed Kumada et al.(2005), which considers the sorting effect due to change in grain size. The habitat change corresponding to the development of the clam as well as the spatial change in habitat can be predicted by this model. The model was applied to the Hazaki coast. Predicted habitat was in good agreement with the measured habitat. This model can be used for predicting the effect of release of this clam to increase the clam resources.
