Eutrophication in coastal marine areas and lagoons: a case study of 'Lac de Tunis'
Kelly, M.; Naguib, M. (1984). Eutrophication in coastal marine areas and lagoons: a case study of 'Lac de Tunis'. UNESCO Reports in Marine Science = Rapports de l'Unesco sur les sciences de la mer, 29. UNESCO: Paris. v, 28 + appendices pp.
Part of: UNESCO Reports in Marine Science = Rapports de l'Unesco sur les sciences de la mer. UNESCO: Paris. ISSN 0253-0112; e-ISSN 0257-6589, more
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| Abstract |
During the period from September 6 through 18, 1982 a workshop was conducted in Tunis, Tunisia to discuss and teach about problems of eutrophication in coastal marine areas. The history of the concept of eutrophication, as developed for north-temperate lakes, was discussed. The major processes involved, including nutrient enrichment, excess algal growth, oxygen depletion, and the microbial processes in anaerobic environments were described. Participants described eutrophic conditions found in coastal areas of their respective countries (all bordering the Mediterranean). The eutrophication of lac de Tunis, perhaps the most eutrophic embayment in the world, was discussed and presented as a case study. During the workshop we realized that coastal eutrophication is more common than is usually recognized. We also realized that the concepts of cultural eutrophication as originally described for north-temperate lakes apply imperfectly to the marine environment. But the processes in both environments are similar, with the addition of large quantities of nutrients, excessive algal growth, depletion of oxygen with consequent microbial and chemical changes, and the death of large numbers of animals and complete change of ecosystem structure. |
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