Fauna and flora in submarine earlyholocene lake-marl deposits from the southwestern Baltic sea

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Abstract

Studies of plant and animal macrofossils have been carried out on early-Holocene lake marls from the southwestern Baltic. The records have been dated to the interval from c. 8500 to 7800 14C years BP by correlating pollen assemblages to an onshore radiocarbon dated pollen diagram. The sediments contain from 5 to 81% carbonate, and only few macroscopic remains of wetland and terrestrial taxa. The plant and animal (mainly mollusc) macrofossils reflect deposition at the outer edge of the belt with submerged macro-limnophytes, in the lower littoral, perhaps at water depths at 4-7 m. The ratio between the shells and opercula of the snail Bithynia tentaculata points to some post-mortem disturbance, but it can be concluded that the water was highly alkaline and mesotrophic.

Original languageEnglish
Pages (from-to)353-358
Number of pages6
JournalHolocene
Volume8
Issue number3
DOIs
Publication statusPublished - 1 Apr 1998

Keywords

  • Baltic Sea
  • Chalk
  • Holocene
  • Marl
  • Mollusc
  • Plant macrofossils

Programme Area

  • Programme Area 5: Nature and Climate

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