In this paper a dierential game model of renewable resource ex- ploitation is considered in which rms compete in exploiting a com- mon resource in a Bertrand price-setting game. The model character- izes a situation in which rms extract a common renewable resource which after harvesting may be...

We develop a novel theoretical framework for studying ecosystems in which interacting state variables which are affected by management decisions diffuse in space. We identify (i) mechanisms creating spatial patterns when economic agents maximize profit at each site by ignoring the impact of...

This work examines the impact that economic growth can have on biodiversity and on the ecological dynamics that would naturally emerge in the absence of human activity. The loss of biodiversity may induce policy-makers to implement defensive actions that prevent single species from extinction....

We address the problem of optimal management of a self organizing ecosystem along ecological succession. A dynamic carrying capacity is interpreted as depicting the dynamics of habitat creation and occupation along ecological succession. The ecosystem may have three growth modes: pure...

The context of this paper is the measurement of welfare and weak sustainability, defined as non-declining utility, in dynamic economies, i.e., green, environmental or comprehensive accounting. We estimate the green net national product and genuine saving for Portugal 1991-2005, accounting for...

We analyze an overlapping generations model where individuals’ welfare depends on the stock of a free access environmental good E and on the consumption C of a private good. We assume that the production process of the private good depletes the natural resource but that specific investments...

This paper analyzes the state and conditions of aquaculture in South China Sea both from technological and economic perspectives. We state from the basic marginal cost analysis and construct a two sector model for this issue. Base on the comparison on the cost between aquaculture sector and...

This paper investigates Kerala fishery sector and its impact on ecosystem, and socioeconomic impact of ban on fisheries on the fishing labour and their dependence on fishing as livelihood. The paper analyses the viability of various mechanized fishing units in the State of Kerala using different...

In this paper we address the implications of production risk for controlling fishing effort in a regulated fishery in a framework where fishers maximize expected utility of profit. We focus on controlling effort through season closures that limit the number of days the fishery is open to harvest...

For a panel of 109 coastal countries we show that negative economic shocks in the fisheries sector are associated with an increase in maritime piracy. Our identification strategy uses the variation in the phytoplankton abundance off the individual countries' coasts, measured by satellite data,...