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Stability and instability of marine ecosystems, illustrated by examples from the Red Sea
Helgoländer wissenschaftliche Meeresuntersuchungen volume 30, pages 18–29 (1977)
Abstract
With all the limitations of novelty, ecology today is able to discern certain practices that may be destructive to the existing ecosystems, and to predict what the damages in the systems will be if preventive measures are not taken. The aim of this paper is to present some ideas about the importance of predictable evolution of all the compounds of ecosystems leading toward the development of climax communities, with high homeostatic power. Recent perturbations, caused mostly by human activity, have disturbed the predictability of events, and as a result also the stability of ecosystem development. Such disturbances produce situations de novo in ecosystems, cause reselection of the biological partners, and eliminate the more sensitive ones. These ideas are illustrated in several investigations performed in the coral reef region of the Gulf of Aqaba, Red Sea. The results of these studies showed that the perturbations caused by man's activity increase the instability of coral reef ecosystems. This is illustrated by a decrease in the affinity of samples taken at the same spot and a decrease in the evenness of distribution. These changes produce new forms of ecosystems, unpredictable as to their final stages of development.
Literature Cited
Fishelson, L., 1973a. Ecological and biological phenomena influencing coral species composition on the reef tables at Eilat (Gulf of Aqaba, Red Sea). Mar. Biol.,19, 183–196.
—, 1973b. Ecology of coral reefs in the Gulf of Aqaba (Red Sea) influenced by pollution. Oecologia12, 55–67.
Lewin, S. A. & Paine, R. T., 1974. Disturbance, pack formation and community structure. Proc. natn. Acad. Sci. U.S.A.71, 2744–2747.
Loya, Y., 1975. Possible effects of water pollution on the community structure of Red Sea corals. Mar. Biol.29, 177–185.
MacArthur, R. H. & Wilson, E.O., 1967. The theory of island biogeography. Princeton Univ. Press, New Jersey, 203 pp.
Patrick, R., 1967. The effect of invasion rate, species pool, and size of area on the structure of diatom community. Proc. natn. Acad. Sci. U.S.A.58, 1335–1346.
Slobodkin, L. B. & Fishelson, L., 1974. The effect of the cleaner-fishLabroides dimidiatus on the point diversity of fishes on the reef front at Eilat, Red Sea. Am. Nat.108, 369–376.
— & Sanders, H., 1969. Environmental predictability and species diversity. Brookhaven Symp. Biol.22, 82–95.
Wilson, E. O., 1969. The species equilibrium. Brookhaven Symp. Biol.22, 38–47.
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This investigation was supported by the U.S.-Israel Binational Science Foundation Grant No. 356.
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Fishelson, L. Stability and instability of marine ecosystems, illustrated by examples from the Red Sea. Helgolander Wiss. Meeresunters 30, 18–29 (1977). https://doi.org/10.1007/BF02207822
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DOI: https://doi.org/10.1007/BF02207822