NITRATE USE BY PLANKTON IN THE EASTERN SUBTROPICAL NORTH-ATLANTIC, MARCH-APRIL 1989

被引：29

作者：

EPPLEY, RW ^{[1
]}

KOEVE, W ^{[1
]}

机构：

[1] UNIV KIEL, INST MEERESKUNDE, W-2300 KIEL 1, GERMANY

来源：

LIMNOLOGY AND OCEANOGRAPHY | 1990年 / 35卷 / 08期

关键词：

D O I：

10.4319/lo.1990.35.8.1781

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nitrate concentration was measured in seawater samples from the euphotic zone at the beginning and end of 12-h, daytime, in situ incubations. The changes in concentration are considered to be measurements of new production. During periods of 2-3 weeks in March-April 1989, important time scales for NO3- input to the euphotic zone (i.e. residence times) and new production were approximately 26 d at 18-degrees-N, 31-degrees-W and approximately 10 d near 33-degrees-N, 21-degrees-W. The average rate of NO3- use in the two areas was 2.63 and 0.62 mmol N m-2 (12 h)-1, or, in carbon equivalents 209 and 49 mg C m-2 d-1, respectively. These values bracket the large-scale estimate by Jenkins of new production in the nearby beta triangle of 150 mg C m-2 d-1.

引用

页码：1781 / 1788

页数：8

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