Articles | Volume 18, issue 1
https://doi.org/10.5194/cp-18-147-2022
https://doi.org/10.5194/cp-18-147-2022
Research article
 | 
27 Jan 2022
Research article |  | 27 Jan 2022

Variations in export production, lithogenic sediment transport and iron fertilization in the Pacific sector of the Drake Passage over the past 400 kyr

María H. Toyos, Gisela Winckler, Helge W. Arz, Lester Lembke-Jene, Carina B. Lange, Gerhard Kuhn, and Frank Lamy

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2021-85', G. Cortese, 17 Sep 2021
    • AC1: 'Reply on RC1', María H. Toyos, 20 Oct 2021
  • RC2: 'Comment on cp-2021-85', Louisa Bradtmiller, 22 Sep 2021
    • AC2: 'Reply on RC2', María H. Toyos, 20 Oct 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (26 Oct 2021) by Erin McClymont
AR by María H. Toyos on behalf of the Authors (09 Nov 2021)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (17 Nov 2021) by Erin McClymont
AR by María H. Toyos on behalf of the Authors (24 Nov 2021)
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Short summary
Past export production in the southeast Pacific and its link to Patagonian ice dynamics is unknown. We reconstruct biological productivity changes at the Pacific entrance to the Drake Passage, covering the past 400 000 years. We show that glacial–interglacial variability in export production responds to glaciogenic Fe supply from Patagonia and silica availability due to shifts in oceanic fronts, whereas dust, as a source of lithogenic material, plays a minor role.