Environmental impact of aquaculture activities
1990
Gowen, R.J. | Ezzi, I. (Natural Environment Research Council, Argyll (United Kingdom). Dunstaffnage Marine Laboratory) | Rosenthal, H. | Maekinen, T.
In many countries throughout the world the scale of aquaculture development is causing concern about the enviromnental impact of this industry on freshwater and marine ecosystems. The range of potentiel impacts is large, some have been studied in detail, others must be regarded as potentiel. In general the cultivation of finfish and shellfish can cause changes in aquatic ecosystems; finfish farming, by enrichment of the receiving water and associated changes in water quality, and shellfish farming by altering the structure of the marine food web. Other impacts relate to the use of chemicals and the interaction between cultivated and wild stocks. The scale of environmental impact is dependent on the size of the operation and the physical, chemical, and biological characteristics of the receiving water. In some instances the level of impact is sufficient to result in feedback which affects the aquaculture operation itself. Knowledge of the requirements of the operation and identification of likely impacts, together with information on the site, can be used to minimize environmental change and reduce the potentiel for such change to affect the operation.
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