Article history: Received 1 December 2003 Received in revised form 28 September 2005 Accepted 29 September 2005 Available online 27 December 2005 This paper considers the connection between the diversity of catch in amulti-species fishery and the productivity of the fishery under different access regimes. A modified Gordon– Schaefer model is used to analyse the importance of the level of divers...

According to international law, straddling fish stocks should be managed cooperatively through Regional Fisheries Management Organizations (RFMOs). This paper analyzes the stability and success of these organizations through a game in partition function form based on the classical Gordon-Schaefer bioeconomic model. It is shown that the larger the number of fishing states that compete for the fi...

Marine spatial planning (MSP), whereby areas of the ocean are zoned for different uses, has great potential to reduce or eliminate conflicts between competing management goals, but only if strategically applied. The recent literature overwhelmingly agrees that including stakeholders in these planning processes is critical to success; but, given the countless alternative ways even simple spatial...

Rational management is required for the profitability of Japanese aquaculture industry and to promote investment in industry. Although bioeconomic modeling could facilitate rational management, it has not been applied marine aquaculture. In present study, we developed a model oyster farming Miyagi prefecture, Japan, determined optimal harvest schedules under labor constraints. Low, moderate, hi...

It is commonly acknowledged that body weight of fish is a key factor in determining market value of landed catch, thus influencing optimal harvest strategies. However, in management strategy evaluations and bioeconomic modelling body size is often an overlooked economic parameter, and there are no systematic studies on prevalence of sizedependent pricing. Here we assess the presence and magnitu...

This study investigates optimal catch of Barents Sea stocks, namely Northeast Arctic Cod and Capelin in multispecies ecosystem. We solve a multispecies age structured bioeconomic model for predator-prey interaction. Barents Sea stock data from ICES are employed for model application. Among others, we also include sustainability constraint in the model that contributes towards ecosystem based ma...