Abstract
A short-term (3–15 days) multiple and single sediment-trap array deployed in Drescher Inlet (Eastern Weddell Sea) during austral summer 1998 showed well preserved and relatively diverse dinoflagellate assemblages comprised of 13 taxa. Consistent with other Antarctic studies, large Protoperidinium species were dominating whereas Preperidinium and Dinophysis showed minor frequencies. Athecates were not observed, possibly due to their poor preservation status. The majority of dinoflagellates were heterotrophic species, likely feeding on previously recorded abundant diatoms at the study site. Assemblage structures varied according to depth (Protoperidinium antarcticum and P. rosaceum at 10 m depth vs. P. macrapicatum and Preperidinium granulosum at 360 m depth) and collection period (first period: P. antarcticum; second period: Protoperidinium sp. C). Sediment-trap dinoflagellates were either derived from a flux out of the overlying fast ice, platelet ice, or the water column but given their high mobility, migration between these media cannot be ruled out.
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Acknowledgments
We thank J. Plötz and H. Bornemann and the captain and crew of the RV Polarstern for their support in the field. I.A.N. Lucas and G. Walker are thanked for SEM assistance. We also wish to acknowledge assistance with species identifications by K. Zonneveld and J. Lewis. We thank B. Long for assistance with lab work and M. Furze for proofreading and help with diagrams and figures. This work was partially funded by the Natural Environment Council, British Council/DAAD, the Royal Society and the Nuffield Foundation. We are grateful to Oliver Esper and one anonymous reviewer whose comments improved the manuscript.
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Pieńkowski, A.J., Marret, F., Thomas, D.N. et al. Dinoflagellates in a fast-ice covered inlet of the Riiser-Larsen Ice Shelf (Weddell Sea). Polar Biol 32, 1331–1343 (2009). https://doi.org/10.1007/s00300-009-0630-5
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DOI: https://doi.org/10.1007/s00300-009-0630-5