Influence of seasonal primary productivity on δ13C of North Atlantic deep-sea benthic foraminifera

被引：19

作者：

Corliss, B. H.

Sun, X.

Brown, C. W.

Showers, W. J.

机构：

[1] Duke Univ, Div Earth & Ocean Sci, Nicholas Sch Environm & Earth Sci, Durham, NC 27708 USA

[2] NOAA, Off Res & Applicat, College Pk, MD 20742 USA

[3] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27607 USA

来源：

DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS | 2006年 / 53卷 / 04期

基金：

美国国家科学基金会;

关键词：

benthic; foraminifera; deep-sea; paleoceanography; North Atlantic;

D O I：

10.1016/j.dsr.2006.01.006

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

The stable isotopic composition of benthic foraminifera has been widely used to reconstruct deep-ocean circulation, but questions have been raised about the influence of organic carbon flux on the carbon isotopic composition of deep-sea taxa. We show that annual and seasonality of primary productivity in the North Atlantic do not affect delta C-13 of Planulina wuellerstorfi, but that the intermittency or seasonality of primary production has a significant effect (0.9%. change over 60 degrees latitude) on delta C-13 of Epistominella exigua, reflecting the influence of pelagic-benthic coupling and microhabitat preferences on test geochemistry. These results support the use of delta C-13 of p. wuellerstorfi in paleocirculation studies and suggest that the delta C-13 of E exigua can be used to reconstruct seasonality of productivity. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：740 / 746

页数：7

共 26 条

[21] Vertical distributions and stable isotopic compositions of live (stained) benthic foraminifera from the North Carolina and California continental margins [J].