DIEL BUOYANCY REGULATION IN THE MARINE DIAZOTROPHIC CYANOBACTERIUM TRICHODESMIUM-THIEBAUTII

被引：77

作者：

VILLAREAL, TA ^{[1
]}

CARPENTER, EJ ^{[1
]}

机构：

[1] SUNY STONY BROOK,MARINE SCI RES CTR,STONY BROOK,NY 11794

来源：

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

关键词：

D O I：

10.4319/lo.1990.35.8.1832

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Trichodesmium tiebautii suspension characteristics were studied in four diel cycles from the Bahamas and eastern Caribbean Sea. Positively buoyant colony frequency peaked near sunrise (69-80%), and decreased during the day to a minimum at or near sundown (18-32%). Negatively buoyant colonies varied inversely in frequency. Experimental results are consistent with carbohydrate-ballasting mechanisms observed in limnetic cyanobacteria. Active buoyance reversals observed in Trichodesmium can account for the frequency observed subsurface maxima of Trichodesmium and may permit diel vertical migration.

引用

页码：1832 / 1837

页数：6

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