Contribution aux études des biocoenoses subtidales
Gamulin-Brida, H.; Giaccone, G.; Golubic, S. (1967). Contribution aux études des biocoenoses subtidales. Helgol. Wiss. Meeresunters. 15(1-4): 429-444. https://dx.doi.org/10.1007/BF01618639
Kinne, O.; Aurich, H. (Ed.) (1967). Vorträge und Diskussionen. Erstes Europäisches Symposion über Meeresbiologie = Papers and discussions. First European Symposium on Marine Biology = Rapports et discussions. Premier symposium européen sur biologie marine. European Marine Biology Symposia, 1. Helgoländer Wissenschaftliche Meeresuntersuchungen, 15(1-4). 669 pp., more
Pollution of sea water in subtidal biotopes is a very important ecologic factor. It opens up new perspectives in studies concerned with the laws of general ecology as well as applied ecology; it has grown into a problem of increasing importance in all areas of tourism and recreation. Although studies of pollution effects on marine biocoenoses are still in their initial phase, they demonstrate the possibility of establishing the degree of pollution and its biological effects on the basis of qualitative and quantitative investigations of benthic fauna and flora. Experience in this field is still quite scant in comparison to that gained about systems of biologic indications in fresh waters, which have been the subject of numerous studies for years. We are well aware that to approach the problem on the level of biocoenoses implies a great many complex difficulties, yet we consider the study of biocoenoses a suitable basis for obtaining better insights into the equally complex effects of polluted waters, which lead to disturbances of the natural balance. The number of species which respond to slight changes in the chemistry of sea water and hence could be used as direct indicators (ldquoLeitformenrdquo) is very small. Quantitative changes in individual species due to pollution and shifting of the equilibrium within biocoenoses could serve as sensitive indications of the influence of waste waters. Generally, marine biocoenoses react to the inflow of waste according to the basic ecologic law for extreme biotopes: reduction in the number of species in conjunction with increase in the number of individuals. In special cases some specific characteristics may occur.
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