Occurence and significance of Chaetoceros (Bacillariophyceae) reasting spores in the Holocene sediments of the Baltic Sea
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The material studied originated from the marine Holocene sediments of the Gulf of Gdansk and from Kiel Bay. During the diatom analysis, the interest was focused on the dominance of Chaetoceros resting spores. An abundant occurrence of such resting spores was interpreted in terms of changes of environmental conditions in the study areas. In the fossil sediments, it indicated the inflow of the oceanic waters which caused the salinity increase and the natural rise in the nutrient content, whereas in the subfossil sediments, it marked the increasing human impact.
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K. Stachura-SucholpesInstitute of Oceanography, University of Gdansk, Pilsudskiego 46, 81-378 Gdynia, Poland,