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Ecotones are interface zones between different ecosystems. Their ecological role and significance with regard to ecological management and conservation has become increasingly appreciated. For the management of freshwater resources, for example, an improved understanding of the role of land/inland water interfaces, will be essential for reducing negative human impacts by engineering, nutrient loading, siltation, etc. The management of ecotones, on the other hand, offers the possibility to control aquatic system processes via stock control of fish populations. Fish apparently are both excellent indicators of ecotone quality as well as determiners of its structure and function.
Ecotones are interface zones between different ecosystems. Their ecological role and significance with regard to ecological management and conservation has become increasingly appreciated. For the management of freshwater resources, for example, an improved understanding of the role of land/inland water interfaces, will be essential for reducing negative human impacts by engineering, nutrient loading, siltation, etc. The management of ecotones, on the other hand, offers the possibility to control aquatic system processes via stock control of fish populations. Fish apparently are both excellent indicators of ecotone quality as well as determiners of its structure and function.
Fish and shellfish comprise annually nearly 70-million tons of the
world's edible animal protein. However, because of this demand,
previously vast stocks have often been exhausted to the point of
near extinction. The first book of its kind in the area of
freshwater/marine biodiversity, this extensive work reviews the
present status of genetic resource management, its needs and
constraints, various intervening human factors such as pollution
and overfishing, and problems posed by different species and
life-styles. This discussion of the conservation of fish and
shellfish resources is illustrated by four diverse groups: Atlantic
salmon, cupped oysters, common and Chinese carp, and Nile tilapia.
These results, produced by the collaboration of nine leading
population and production geneticists, aquaculturists, and
behavioral and developmental ecologists should become a fundamental
resource useful to biologists, scientists and advisors exploring
current issues in the fishery sciences.
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