Costa-Pierce (2002) defined "ecological aquaculture" as an alternative model that uses ecological principles and ecosystems thinking as the fundamental organizing paradigm for the development of aquaculture. Ecological aquaculture incorporates—at the outset—the principles of natural and social ecology, planning for community development, and concerns for the wider social, economic, and environm...

the management of machine replacement (specifically tractors) is one of the most critical factors for performing field operations on time. therefore, tractor repair and maintenance costs must be accurately predicted. this research was carried out to evaluate the use of the regression technique in predicting tractor repair and maintenance costs. the study was conducted using empirical data on 60...

In a rapidly changing world, sustainability, if it can be said to exist at all, is concept that has attained mythic status, often pursued and rarely reached. In order to improve our capability to cope with environmental problems, adopting an Ecosystem Approach has been suggested. One of the major challenges in the implementation of this new paradigm relates to control of externalities. The reco...

Ecologists and economists are increasingly in agreement that ecological and economic systems are linked and that these actually should be viewed as one system. Perhaps because this recognition has been very recent, neither ecologists nor economists have studied the short-term behavior of jointly determined ecologicaleconomic systems that are subject to perturbations stemming from natural events...

Ecologists and economists both use models to help develop strategies for biodiversity management. The practical use of disciplinary models, however can be limited because ecological models tend not to address the socioeconomic dimension of biodiversity management, whereas economic models tend to neglect the ecological dimension. Given these shortcomings of disciplinary models, there is a necess...

Innovations in social-ecological research require novel approaches to conceive change in human-environment systems. The study of history constitutes an important element of this process. First, using the Chilika Lagoon small-scale fisheries in India, as a case, in this paper I reflect on the appropriateness of a social-ecological perspective for understanding economic history. Second, I examine...

Forests and rangelands are the most important natural ecosystems which provide many economic benefits to the society due to their biodiversity and ecological functionalities. Dashtenaz wildlife refuge, Sari, is a sylvan region, covering 55 ha of rangeland with abundant diversity, is refuge of an endangered species of deer called Dama mesopotamica. In this study, Contingent Valuation Method (CVM...