Remineralization ratios in the subtropical North Pacific gyre

被引：22

作者：

Li, YH ^{[1
]}

Karl, DM ^{[1
]}

Winn, CD ^{[1
]}

Mackenzie, FT ^{[1
]}

Gans, K ^{[1
]}

机构：

[1] Univ Hawaii, Dept Oceanog, Honolulu, HI 96822 USA

来源：

AQUATIC GEOCHEMISTRY | 2000年 / 6卷 / 01期

基金：

美国国家科学基金会;

关键词：

mixing model; preformed nutrients; Redfield ratios; remineralization ratios;

D O I：

10.1023/A:1009676300859

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Based on a new mixing model of two end-members, the water column remineralization ratios of P/N/C-org - O-2 = 1/13 +/- 1/135 +/- 18/170 +/- 9 are obtained for the Hawaii Ocean Time-series (HOT) data set at station ALOHA. The traditional Redfield ratios of P/N/C-org/-O-2 = 1/16/106/138 have standard deviations of more than 50%, when they are based on the average composition of phytoplankton. Apparently, the remineralization processes in the water column have smoothed out the observed large variability of plankton compositions. A new molar formula for the remineralized plankton may be written as C135H280O105N13P or C-25(CH2O)(101)(CH4)(9)(NH3)(13)(H3PO4). Oxidation of this formula results in C-25(CH2O)(101)(CH4)(9)(NH3)(13)(H3PO4) + 170O(2) --> 135CO(2) + 132H(2)O + 13NO(3)(-) + H2PO4- + 14H(+). For comparison, remineralization using Redfield's formula gives: (CH2O)(106)(NH3)(16)(H3PO4) + 138O(2) --> 106CO(2) + 122H(2)O + 16NO(3)(-)+ H2PO4- + 17H(+).

引用

页码：65 / 86

页数：22

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