A quantitative study of the origin of dreissena polymorpha shell accumulations in Szczecin Bay Baltic Sea.

Alexandrowicz, Stefan W. (1977) A quantitative study of the origin of dreissena polymorpha shell accumulations in Szczecin Bay Baltic Sea. Bulletin de l'Academie Polonaise des Sciences Serie des Sciences de la Terre, 25 (2). pp. 75-82.

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Abstract

Abundant accumulations of D. polymorpha (Pallas) shells occur on the shores of Szczecin Bay, Baltic Sea (northwest Poland). Studies on the conditions of their formation involved a quantitative analysis of 3 sets: shells of bivalves living in the Bay, shells accumulating on the bottom due to natural mortality of bivalves and shells accumulated by waves in the supralittoral zone of the Bay. Differences in shell-size distribution of the living pelecypods and shells accumulating in the bottom sediments are due to biological and sedimentological processes. Due to the mortality of bivalve populations, shell accumulations are richer in large specimens than the corresponding biocenosis. Formation of supralittoral shell accumulations involves enrichment of the material in small shells, large shells remaining on the basin floor.

Document Type: Article
Refereed: Yes
Open Access Journal?: No
Publisher: Polska Akademia Nauk
Date Deposited: 22 Mar 2019 08:45
Last Modified: 26 Jun 2020 09:42
URI: https://oceanrep.geomar.de/id/eprint/46203

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