PRIMARY PRODUCTION OF PROCHLOROPHYTES, CYANOBACTERIA, AND EUKARYOTIC ULTRAPHYTOPLANKTON - MEASUREMENTS FROM FLOW CYTOMETRIC SORTING

被引:414
作者
LI, WKW
机构
关键词
D O I
10.4319/lo.1994.39.1.0169
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
A partitioning of ultraphytoplankton primary production among prochlorophytes, cyanobacteria, and eucaryotic algae was made by shipboard flow cytometric sorting of C-14-labeled cells. Aggregate primary production was derived from the sum, over all three ultraplankton groups, of the product of cell abundance and cell-specific rate of C-14 uptake which ranged from 0.03 to 4 fg C cell-1 h-1 for prochlorophytes and 0.2 to 10 fg C cell-1 h-1 for cyanobacteria. Results indicated that the dominant primary producer was not necessarily the numerical dominant nor necessarily the group with the highest cell-specific rate of C-14 Uptake. Generally, eucaryotic ultraphytoplankton are dominant because of their high cell-specific rate of C-14 uptake and in spite of their relatively low abundance. Less often, it seems, procaryotic picoplankton may dominate in spite of their low cell-specific rate of C-14 uptake because of their high abundance.
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页码:169 / 175
页数:7
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