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Potential effect of ice formation on Antarctic pelagic copepods: salinity induced mortality of Calanus propinquus and Metridia gerlachei in comparison to sympagic acoel turbellarians

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Abstract

The salinity tolerance of two dominant Antarctic planktic copepods (Calanus propinquus and Metridia gerlachei) was tested over a range from 34 to 85 PSU and compared with that of sympagic turbellarians. The copepods survived only at a salinity of 34, higher salinities causing death within days. The turbellarians survived at salinities up to 75. The data imply that C. propinquus and M. gerlachei will not survive incorporation into newly forming sea ice because of the increasing brine salinity in new ice.

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Authors and Affiliations

  1. Institute for Polar Ecology, Christian-Albrechts-Universität Kiel, Wischhofstrasse. 1-3, Gebäude 12, D-24148 Kiel, Germany e-mail: rgradinger@ipoe.de, Fax: +494316001210, , , , , , DE

    R. Gradinger

  2. Alfred Wegener Institut für Polar und Meeresforschung, D-27515 Bremerhaven, Germany, , , , , , DE

    S. B. Schnack-Schiel

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  1. R. Gradinger
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  2. S. B. Schnack-Schiel
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Received: 27 January 1998 / Accepted: 11 April 1998

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Gradinger, R., Schnack-Schiel, S. Potential effect of ice formation on Antarctic pelagic copepods: salinity induced mortality of Calanus propinquus and Metridia gerlachei in comparison to sympagic acoel turbellarians. Polar Biol 20, 139–142 (1998). https://doi.org/10.1007/s003000050288

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  • DOI: https://doi.org/10.1007/s003000050288

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