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

被引：28

作者：

Cramwinckel, Margot J. ^{[1
]}

van der Ploeg, Robin ^{[1
]}

Bijl, Peter K. ^{[1
]}

Peterse, Francien ^{[1
]}

Bohaty, Steven M. ^{[2
]}

Roehl, Ursula ^{[3
]}

Schouten, Stefan ^{[1
,4
,5
]}

Middelburg, Jack J. ^{[1
]}

Sluijs, Appy ^{[1
]}

机构：

[1] Univ Utrecht, Fac Geosci, Dept Earth Sci, NL-3584 CB Utrecht, Netherlands

[2] Univ Southampton, Natl Oceanog Ctr Southampton, Ocean & Earth Sci, Southampton SO14 3ZH, Hants, England

[3] Univ Bremen, MARUM Ctr Marine Environm Sci, D-28359 Bremen, Germany

[4] NIOZ Royal Netherlands Inst Sea Res, Dept Marine Microbiol & Biogeochem, NL-1790 AB Den Burg, Texel, Netherlands

[5] Univ Utrecht, NL-1790 AB Den Burg, Texel, Netherlands

来源：

GEOLOGY | 2019年 / 47卷 / 03期

基金：

欧洲研究理事会;

关键词：

OXYGEN-MINIMUM ZONES; TROPICAL ATLANTIC; CARBON; SEDIMENTS; ECOLOGY; BLOOMS; SHIFTS; OCEAN;

D O I：

10.1130/G45614.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

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.

引用

页码：247 / 250

页数：4

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