ABSTRACT
This case study aims to clarify the problems of resource management in the absence of fishery rights with reference to regulations to conserve the short-necked clam resource in Yokohama Seaside Park. In this case, Yokohama City authorities proposed a number of regulations to control shellfish gathering and to manage the clam population. However, when fishery rights were renounced, the short-necked clam resource changed from a fishery resource to a recreational one, and the resource conservation system changed from a self-management system to a system of external supervision. As a consequence, this involved a monitoring/patrol system and increased running costs.
