Using the sediment archive of living dinoflagellate cysts and other protist resting stages to study temporal population dynamics
Published:January 01, 2013
M. Ellegaard, S. Ribeiro, N. Lundholm, T. J. Andersen, T. Berge, F. Ekelund, K. Härnström, A. Godhe, 2013. "Using the sediment archive of living dinoflagellate cysts and other protist resting stages to study temporal population dynamics", Biological and Geological Perspectives of Dinoflagellates, J. M. Lewis, F. Marret, L. R. Bradley
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This overview of methodology and applications of sediment archives of living dinoﬂagellates and other protists examines their potential to study ecology and evolution of unicellular eukaryotes through time. Sediment cores from Koljö Fjord on the west coast of Sweden and from Mariager Fjord in Northern Denmark, both enclosed embayments with recurring anoxic bottom water, provide a virtually undisturbed sediment record. Cultures of dinoﬂagellates (and other protists) were established by individually isolating specimens from dated sediment layers. Twelve sediment cores were used from which over 500 dinoﬂagellate strains from 20 different taxa, as well as numerous strains of diatoms, haptophytes, prasinophytes and heterotrophic protists, were established. Model dinoﬂagellate species included Pentapharsodinium dalei and Scrippsiella trochoidea. The culture strains were used to test for intraspeciﬁc variation through time in morphology, genotypes and physiology. In this paper we discuss the potential for using the sediment archive for temporal population studies, including applications relevant to palaeoecological studies.
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Biological and Geological Perspectives of Dinoflagellates
This volume provides an overview of current research on fossil and modern dinoflagellates, as well as highlighting research areas for future collaboration, following the DINO9 International Conference in Liverpool. The volume is organized into four themes, with a review paper for each theme written by the key-note speaker. Each theme also includes a future research foci note following discussion during the conference. The contributions are organized into the following sections: environmental change, ecology/palaeoecology, life cycles and diversity, and stratigraphy and evolution. Also included are notes from two workshops: culture experiments and dinocysts as palaeoceanographic tracers. This volume will be of interest to both the biological and Micropalaeontological communities.