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Harmful algae and export production collapse in the equatorial Atlantic during the zenith of Middle Eocene Climatic Optimum warmth

Harmful algae and export production collapse in the equatorial Atlantic during the zenith of Middle Eocene Climatic Optimum warmth
Harmful algae and export production collapse in the equatorial Atlantic during the zenith of Middle Eocene Climatic Optimum warmth
New palynological, sedimentological, and geochemical records spanning the Middle Eocene Climatic Optimum (MECO; ca. 40 Ma) in the equatorial Atlantic Ocean indicate that peak warming was associated with upper-ocean stratification, decreased export production, and possibly harmful algal blooms, followed by slight oxygen minimum zone expansion. Combining these findings with published MECO records suggests that export production collapse and benthos starvation during the zenith of MECO warmth were widespread in the Atlantic. Furthermore, comparison to records across the Paleocene-Eocene thermal maximum (ca. 56 Ma) at the same site suggests a similar system response to warming, but with different impact on benthic communities.
0091-7613
247-250
Cramwinckel, Margot J.
d66e11bf-673e-4caa-9431-1db9a84fa94c
Van Der Ploeg, Robin
f17951c6-b5eb-479b-95a7-e04714635bb3
Bijl, Peter K.
fe283896-4066-490e-81b5-3212d00ef810
Peterse, Francien
471cf1d7-57d4-4954-ae8d-14fa03f0278b
Bohaty, Steven M.
af9dbe78-8b9f-44f2-ba1d-20795837d2d1
Röhl, Ursula
c28c498d-f0a1-4c25-bf94-4bf46641ceed
Schouten, Stefan
0d0291ca-b8dc-48a2-b61c-798c650ec1fd
Middelburg, Jack J.
abdca8a9-843f-4940-afe1-81c4df84b913
Sluijs, Appy
af623507-b795-4458-8ca5-cce783869a3d
Cramwinckel, Margot J.
d66e11bf-673e-4caa-9431-1db9a84fa94c
Van Der Ploeg, Robin
f17951c6-b5eb-479b-95a7-e04714635bb3
Bijl, Peter K.
fe283896-4066-490e-81b5-3212d00ef810
Peterse, Francien
471cf1d7-57d4-4954-ae8d-14fa03f0278b
Bohaty, Steven M.
af9dbe78-8b9f-44f2-ba1d-20795837d2d1
Röhl, Ursula
c28c498d-f0a1-4c25-bf94-4bf46641ceed
Schouten, Stefan
0d0291ca-b8dc-48a2-b61c-798c650ec1fd
Middelburg, Jack J.
abdca8a9-843f-4940-afe1-81c4df84b913
Sluijs, Appy
af623507-b795-4458-8ca5-cce783869a3d

Cramwinckel, Margot J., Van Der Ploeg, Robin, Bijl, Peter K., Peterse, Francien, Bohaty, Steven M., Röhl, Ursula, Schouten, Stefan, Middelburg, Jack J. and Sluijs, Appy (2019) Harmful algae and export production collapse in the equatorial Atlantic during the zenith of Middle Eocene Climatic Optimum warmth. Geology, 47 (3), 247-250. (doi:10.1130/G45614.1).

Record type: Article

Abstract

New palynological, sedimentological, and geochemical records spanning the Middle Eocene Climatic Optimum (MECO; ca. 40 Ma) in the equatorial Atlantic Ocean indicate that peak warming was associated with upper-ocean stratification, decreased export production, and possibly harmful algal blooms, followed by slight oxygen minimum zone expansion. Combining these findings with published MECO records suggests that export production collapse and benthos starvation during the zenith of MECO warmth were widespread in the Atlantic. Furthermore, comparison to records across the Paleocene-Eocene thermal maximum (ca. 56 Ma) at the same site suggests a similar system response to warming, but with different impact on benthic communities.

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Accepted/In Press date: 4 January 2019
Published date: 6 February 2019

Identifiers

Local EPrints ID: 430755
URI: https://eprints.soton.ac.uk/id/eprint/430755
ISSN: 0091-7613
PURE UUID: 9fd0a513-74b0-4765-b4d4-e037c0706613
ORCID for Steven M. Bohaty: ORCID iD orcid.org/0000-0002-1193-7398

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Date deposited: 10 May 2019 16:30
Last modified: 10 Dec 2019 01:43

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Contributors

Author: Margot J. Cramwinckel
Author: Robin Van Der Ploeg
Author: Peter K. Bijl
Author: Francien Peterse
Author: Ursula Röhl
Author: Stefan Schouten
Author: Jack J. Middelburg
Author: Appy Sluijs

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