A comparison of benthic foraminiferal paleoproductivity proxies in a sediment core from the NW Africa upwelling area

被引：10

作者：

Guichard, S ^{[1
]}

Jorissen, F ^{[1
]}

Bertrand, P ^{[1
]}

Gervais, A ^{[1
]}

Martinez, P ^{[1
]}

Peypouquet, JP ^{[1
]}

Pujol, C ^{[1
]}

VergnaudGrazzini, C ^{[1
]}

机构：

[1] UNIV PARIS 06,IODYC,F-75005 PARIS 05,FRANCE

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DE LA TERRE ET DES PLANETES | 1997年 / 325卷 / 01期

关键词：

paleoproductivity; benthic foraminifera; quaternary; organic carbon; upwelling;

D O I：

10.1016/S1251-8050(97)83274-0

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Two different paleoproductivity Proxies, both based on benthic foraminiferal frequency data, are tested in a sediment core from the NW African upwelling area. A first proxy, the BFAR, enables us to estimate the total amount of organic matter introduced into the benthic ecosystem. The second one, the sample scores on the first axis of a P.C.A., enables us to estimate export-paleoproductivity when the oxygen concentration does not exceed 4.4 mL/L. The comparison gf these micropaleontological proxies also allows us to evaluate the quality of the organic matter, and thus, to estimate what part of the organic matter introduced in the benthic ecosystem has been remineralized, and what part has ultimately been stored in the sediment.

引用

页码：65 / 70

页数：6

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