Irreversible Capital Investment in a Two-Stage Bimatrix Fishery Game Model

A two-stage, two-player noncooperative game model is developed(under an irreversible capital investment assumption) with the main aim of predicting the number of vessels that each player in such a game will find in his best interest to employ in the exploitation of the Arcto-Norwegian cod stock, given a noncooperative environment and the fact that all players are jointly constrained by the population dynamics of the resource. The predictions so obtained are then compared with (i) the sole owner's optimal capacity investments for the two players; (ii) the results in Sumaila (1994), where perfect malleability of capacity is assumed implicitly: and (iii) available data on the Acrto-Norwegian cod fishery.noncooperative, game, fisheries, irreversible, capital, trawl, coastal, Environmental Economics and Policy,

NATURAL RESOURCE ACCOUNTING AND SOUTH AFRICAN FISHERIES: A BIO-ECONOMIC ASSESSMENT OF THE WEST COAST DEEP-SEA HAKE FISHERY WITH REFERENCE TO THE OPTIMAL UTILISATION AND MANAGEMENT OF THE RESOURCE

Resource /Energy Economics and Policy,

Marine Fisheries and the World Economy

People in coastal countries depend on healthy fisheries for their livelihoods. Gross revenue globally from marine fisheries has been estimated during the last decade at $80 billion to$85 billion annually. This estimate, however, reflects only the landed, or market, value of the fish as they first leave the boat, and it underestimates the full economic impact of fisheries. A more accurate accounting of the value of the fishing industry to the global economy would incorporate the indirect effects on related industries that depend on well-managed fisheries

Overfishing Trends and the Global Food Crisis

Fish are a vital source of nourishment, especially to people in the world's poorest nations. Widespread over?shing has led to a decline in catch globally; however, the links between over?shing and food security have not been well-understood. The authors of scientific article "Food security implications of globalmarine catch losses due to overfishing." assessed potential losses, globally and regionally, in ?sheries catch and revenue resulting from over?shing. They found a third to a half of commercial marine species had been over?shed during the past half-century, with billions in potential revenue lost. By placing country-level catch loss trends in the context of undernourishment levels in many of the world's poorest countries, the authors estimated that in 2000 the additional catch from sustainable ?shing could have helped 20 million people cover their food de?cit and avert undernourishment. This Pew Ocean Science Series report is a summary of the scientists' ?ndings

Topical Problems in Fishery Economics: An Introduction

Resource /Energy Economics and Policy,

Trade and sustainable fisheries

The ultimate goal of this contribution is to formulate fish trade policy recommendations that can be deployed to help achieve the relevant Sustainable Development Goals of the United Nations (SDGs). Even though all the 17 SDGs are relevant to the issues addressed in this contribution, I will focus on SDG14: Life under the water, and also SDG 1 (No poverty); 2 (Zero hunger); 3 (Gender equality); 4: (Reduced inequality); and 12 (Responsible consumption and production). Before I get to the recommendations, I will review the literature on the relationship between fish trade and sustainable fisheries; and discuss the potential promise (pros) and perils (costs) of fish trade. Policy recommendations for using fish trade to support the SDGs are provided under different headings that capture the main concerns highlighted in the literature when it comes to ensuring the sustainability of fisheries in general and those related to the impact of trade on fisheries sustainability in particular. The policy measures presented in this chapter have the potential to help ensure that trade in fish and fish products would support the implementation of the SDGs

A BIOECONOMIC ANALYSIS OF THE NORWEGIAN SPRING SPAWNING HERRING (NSSH) STOCK

A biological model belonging to the Beverton-Holt age-structured family for the Norwegian spring spawning herring (Clupea harengus) (NSSH) is simulated, the outcome of which compares well with actual data on the fishery. This model is then combined with an economic model to help investigate how optimal a management policy of constant fishing mortality will be for a fishery such as the NSSH, which has a highly fluctuating stock biomass. For the range of constant values of fishing mortality explored, and a simulation time horizon of 20 years, a constant fishing mortality of 0.15 turns out to be economically optimal. It should be noted that this result is sensitive to variations in the assumptions underlying key variables of the fishery. For example, when a constant rather than variable recruitment was assumed, a different optimal fishing mortality rate was obtained.bioeconomic model, herring optimal management, Resource /Energy Economics and Policy, Q57, Q22, Q28,

How can we minimize the impact of fishing?

How many times do you think you have eaten fish this year? Fish is delicious and it’s really good for you, but we need to make sure that we don’t over-fish our seas and oceans (Fig. 1). That way there are enough fish left to feed us for all the years to come. We propose three simple rules for fisheries management, which would reduce the impact of fishing on the major fish species. The rules would also help to rebalance the ecosystems and reduce the damage that fishing causes when boats scrape their nets over the seabed to catch fish