The biogeography of major diatom taxa in Southern Ocean surface sediments: 3. Tropical/Subtropical species
This paper gives a modern circumscription of Tropical/Subtropical diatoms regarding their relationship with sea-surface temperatures (SST) and sea ice cover. Diatoms from 228 core-top sediment samples collected from the Southern Ocean were studied to determine the geographic distribution of eight ma...
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| Veröffentlicht in: | Palaeogeography, palaeoclimatology, palaeoecology palaeoclimatology, palaeoecology, 2005-07, Vol.223 (1), p.49-65 |
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| container_title | Palaeogeography, palaeoclimatology, palaeoecology |
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| creator | Romero, O.E. Armand, L.K. Crosta, X. Pichon, J.-J. |
| description | This paper gives a modern circumscription of Tropical/Subtropical diatoms regarding their relationship with sea-surface temperatures (SST) and sea ice cover. Diatoms from 228 core-top sediment samples collected from the Southern Ocean were studied to determine the geographic distribution of eight major diatom species/taxa preserved in surface sediments generally located north of the Subantarctic Front. The comparison of the relative contribution of diatom species with modern February SST and sea-ice cover reveals species-specific sedimentary distributions regulated both by water temperatures and sea ice conditions. Although selective preservation might have played some role, their presence in surface and downcore sediments from the Southern Ocean are reliable indicators of high SST and poleward transport of waters from the Tropical/Subtropical Atlantic. Our work supports the use of diatom remains to reconstruct past variations of these environmental parameters via qualitative and transfer function approaches. |
| doi_str_mv | 10.1016/j.palaeo.2005.03.027 |
| format | Article |
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Although selective preservation might have played some role, their presence in surface and downcore sediments from the Southern Ocean are reliable indicators of high SST and poleward transport of waters from the Tropical/Subtropical Atlantic. 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| ispartof | Palaeogeography, palaeoclimatology, palaeoecology, 2005-07, Vol.223 (1), p.49-65 |
| issn | 0031-0182 1872-616X |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Bacillariophyceae Biogeography Climatology Diatom Earth Sciences Marine Ocean, Atmosphere Oceanography Sciences of the Universe Sea ice Sediments Southern Ocean |
| title | The biogeography of major diatom taxa in Southern Ocean surface sediments: 3. Tropical/Subtropical species |
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