Microfossil evidence for trophic changes during the Eocene–Oligocene transition in the South Atlantic (ODP Site 1263, Walvis Ridge)

Bordiga, M.; Henderiks, J.; Tori, F.; Monechi, S.; Fenero, R.; Legarda-Lisarri, A.; Thomas, E.

doi:https://doi.org/10.5194/cp-11-1249-2015

Articles | Volume 11, issue 9

https://doi.org/10.5194/cp-11-1249-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Climatic and biotic events of the Paleogene

https://doi.org/10.5194/cp-11-1249-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 11, issue 9

Research article

|

30 Sep 2015

Research article |

| 30 Sep 2015

Microfossil evidence for trophic changes during the Eocene–Oligocene transition in the South Atlantic (ODP Site 1263, Walvis Ridge)

M. Bordiga, J. Henderiks, F. Tori, S. Monechi, R. Fenero, A. Legarda-Lisarri, and E. Thomas

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Final revised paper (published on 30 Sep 2015)
Supplement to the final revised paper
Preprint (discussion started on 07 May 2015)
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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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SC C838: 'Comment: Oi1 and EOB', Paul Pearson, 26 Jun 2015
- AC C1258: 'Reply of authors to P. Pearson', Manuela Bordiga, 05 Aug 2015
RC C878: 'Review of the manuscript entitled “The Eocene–Oligocene transition at ODP Site 1263, Atlantic Ocean: decreases in nannoplankton size and abundance and correlation with benthic foraminiferal assemblages” by M. Bordiga, J. Henderiks, F. Tori, S. Monec', Anonymous Referee #1, 29 Jun 2015
- AC C1279: 'Reply of authors to anonynous reviewer', Manuela Bordiga, 05 Aug 2015
RC C897: 'Review', Giuliana Villa, 30 Jun 2015
- AC C1263: 'Reply of authors to G. Villa', Manuela Bordiga, 05 Aug 2015
RC C931: 'Review of Bordiga et al. 2015', Tom Dunkley Jones, 03 Jul 2015
- AC C1269: 'Reply of authors to T. Dunkley Jones', Manuela Bordiga, 05 Aug 2015

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by Editor) (17 Aug 2015) by Gerald Dickens

AR by Manuela Bordiga on behalf of the Authors (27 Aug 2015) Author's response Manuscript

ED: Publish subject to technical corrections (07 Sep 2015) by Gerald Dickens

AR by Manuela Bordiga on behalf of the Authors (09 Sep 2015) Manuscript

Short summary

Deep-sea sediments at ODP Site 1263 (Walvis Ridge, South Atlantic) show that marine calcifying algae decreased in abundance and size at the Eocene-Oligocene boundary, when the Earth transitioned from a greenhouse to a more glaciated and cooler climate. This decreased the food supply for benthic foraminifer communities. The plankton rapidly responded to fast-changing conditions, such as seasonal nutrient availability, or to threshold-levels in pCO2, cooling and ocean circulation.