This unique addition to reference literature provides an introduction to the major concepts and contemporary issues that are essential for students of environmental science and environmental studies to know. With over 200 entries authored by world-class names like Anthony Brazel, John Day and Edward Keller, this text is divided into six sections: Environmental Science, Environments, Paradigms & Concepts, Processes & Dynamics, Scales & Techniques, and Environmental Issues.  

Fishery Management

Fishery management

For decades, the objective of fishery management was to maintain the resource at the level of maximum sustainable yield (MSY). It now is clear that MSY is no longer acceptable. The principal reason is that marine fishery resources fluctuate widely in abundance from natural causes such as environmental variability and biotic and ecological interactions, so that MSY cannot be represented by a simple number. A MSY that can safely be taken at one time may be much too high at another, and the resources would be in jeopardy if this were not recognized. For this reason and others, the comprehensive understanding of modern fishery management concepts has a threshold as defined by the Food and Agricultural Organization of the United Nations.

Fisheries are an ...

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