Chronology, dose rates, and stable isotope record of sediment core MD03-2607 ...
Reconstructions of primary productivity at low latitudes have been the focus of several studies to better understand how the export of nutrient-rich, intermediate Southern Ocean (SO) waters influences productivity at these latitudes. This was triggered by the general observation of minima in the pla...
| Main Authors: | , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
2012
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.878135 https://doi.pangaea.de/10.1594/PANGAEA.878135 |
| Summary: | Reconstructions of primary productivity at low latitudes have been the focus of several studies to better understand how the export of nutrient-rich, intermediate Southern Ocean (SO) waters influences productivity at these latitudes. This was triggered by the general observation of minima in the planktonic foraminiferal d13C values during deglaciations, which was interpreted as an isotopic signal of intermediate SO waters, together with concomitant increase in diatom productivity at some equatorial sites. However, the impact of these SO waters on productivity at higher latitudes is not well constrained. Here, we compare a high-resolution planktonic foraminiferal d13C record with total organic carbon and biomarker records for Proboscia diatoms and haptophytes from a core offshore Southeastern Australia (SEA). This shows that SEA received intermediate SO waters during deglaciations but it did not result in increased productivity during these periods. Instead, the highest primary productivity period, as shown ... : Supplement to: Lopes dos Santos, Raquel A; Wilkins, Michael J; De Deckker, Patrick; Schouten, Stefan (2012): Late Quaternary productivity changes from offshore Southeastern Australia: A biomarker approach. Palaeogeography, Palaeoclimatology, Palaeoecology, 363-364, 48-56 ... |
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