Subtropical coccolithophores in the Weddell Sea |
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| Institution: | 1. Paleobiology, Department of Earth Sciences, Uppsala University, Villavägen 16, Uppsala SE-752 36, Sweden;2. Department of Biology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, Zagreb 10000, Croatia;3. CEES, Department of Biosciences, University of Oslo, P.O. Box 1066, Blindern, Oslo 0316, Norway;1. Mersin University, Faculty of Education, Mersin, Turkey;2. Joint Research Centre of the European Commission, Ispra, VA, Italy;3. CNR, Institute for Electromagnetic Sensing of the Environment, IREA, Rome, Italy;1. State Key Laboratory of Marine Environmental Science (Xiamen University)/College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;2. School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China;3. Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China |
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| Abstract: | Eleven subtropical coccolithophore species were identified in three samples taken in the austral autumn from the Weddell Sea, Antarctic, between 69°S and 70°S, just south of the Antarctic Slope Front. This is the first report of coccolithophores present at such southern latitudes. We provide three hypotheses for their occurrence in the Weddell Sea: (1) Coccolithophore species have wider temperature tolerances than previously believed. (2) Coccolithophores found in the Weddell Sea were part of a remnant community from the Agulhas Current. (3) Coccolithophores were transported by a N–S eddy crossing the Brazil–Malvinas confluence region and then subsequently transported to the east by warm water eddies of the Antarctic Circumpolar Current to the study location. Further temperature tolerance experiments with coccolithophores are recommended. |
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