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Journal of Micropalaeontology An open-access journal of The Micropalaeontological Society
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Volume 35, issue 1
J. Micropalaeontol., 35, 20-25, 2016
https://doi.org/10.1144/jmpaleo2015-007
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Micropalaeontol., 35, 20-25, 2016
https://doi.org/10.1144/jmpaleo2015-007
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 4.0 License.

  01 Jan 2016

01 Jan 2016

Recent invasion of the foraminifer Nonionella stella Cushman & Moyer, 1930 in northern European waters: evidence from the Skagerrak and its fjords

Irina Polovodova Asteman1,2 and Joachim Schönfeld3 Irina Polovodova Asteman and Joachim Schönfeld
  • 1Department of Earth Sciences, University of Gothenburg, PO Box 460, SE 40530, Sweden
  • 2Present address: Uni Research Climate, Bjerknes Centre for Climate Research, Allégaten 55, N-5007 Bergen, Norway
  • 3GEOMAR - Helmholtz Centre for Ocean Research Kiel, Wischhofstrasse 1-3, 24148 Kiel, Germany

Keywords: biological invasions, protozoans, environmental change, benthic foraminifera, propagules

Abstract. The eastern Pacific benthic foraminifer Nonionella stella Cushman & Moyer, 1930 was recorded for the first time in the Skagerrak (North Sea) and its fjords. In this short note we evaluate its migration, considering both dispersal by propagules and ship ballast tanks. We suggest that the predominantly southward surface currents along the western European seaboard and Morocco would impede a wide-range dispersal of N. stella propagules and hypothesize transportation by ship ballast tanks as the possible vector of N. stella immigration into northern European seas.

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