(Appendix A) Relative abundance of Emiliania huxleyi in sediment cores of the North Atlantic ...
The coccolithophore species Emiliania huxleyi is characterized by a wide range of sizes, which can be easily distinguished in the light microscope. In this study we have quantified the abundance of large (coccoliths > 4 µm in maximum length) E. huxleyi specimens during the last 25 kyr in sediment...
| Main Authors: | , , , , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
PANGAEA - Publishing Network for Geoscientific and Environmental Data
2010
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.15468/tvmacf https://www.gbif.org/dataset/fae8d0fd-7254-4cc9-ad5c-e9873e273e69 |
| Summary: | The coccolithophore species Emiliania huxleyi is characterized by a wide range of sizes, which can be easily distinguished in the light microscope. In this study we have quantified the abundance of large (coccoliths > 4 µm in maximum length) E. huxleyi specimens during the last 25 kyr in sedimentary records from eleven cores and drill sites in the NE Atlantic and W Mediterranean Sea, to prove its usefulness in the reconstruction of water mass dynamics and biostratigraphic potential. During the Last Glacial Maximum this large form, a cold-water indicator, was common in the NE Atlantic and Mediterranean, and its regional variation in abundance indicates a displacement of the climatic zones southwards in agreement with the development of ice sheets and sea ice in the Northern Hemisphere during this period. On the other hand, the gradient between northern and southern surface water masses in the Subtropical Gyre appears to have been more pronounced than at present, while the Portugal and Canary Currents were ... |
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