Spatial variations in euphotic zone nitrate utilization based on δ15N in surface sediments

被引：31
|
作者：
Holmes, ME [1 ]
Muller, PJ [1 ]
Schneider, RR [1 ]
Segl, M [1 ]
Wefer, G [1 ]
机构：
[1] Univ Bremen, Dept Geosci, D-28334 Bremen, Germany
来源：
GEO-MARINE LETTERS | 1998年 / 18卷 / 01期
关键词：
D O I：
10.1007/s003670050052
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Bulk delta(15)N values in surface sediment samples off the southwestern coast of Africa were measured to investigate the biogeochemical processes occurring in the water column. Nitrate concentrations and the degree of utilization of the nitrate pool are the predominant controls on sedimentary delta(15)N in, the Benguela Current region. Denitrification does not appear to have had an important effect on the delta(15)N Signal of these sediments and, based on delta(15)N and delta(13)C, there is little terrestrial input.
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收藏
页码：58 / 65
页数：8
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