Microscale nutrient patches in planktonic habitats shown by chemotactic bacteria

被引：261

作者：

Blackburn, N

Fenchel, T

Mitchell, J

机构：

[1] Univ Copenhagen, Marine Biol Lab, DK-3000 Helsingor, Denmark

[2] Flinders Univ S Australia, Sch Biol, Adelaide, SA 5001, Australia

来源：

SCIENCE | 1998年 / 282卷 / 5397期

关键词：

D O I：

10.1126/science.282.5397.2254

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Are nutrients available to microbial communities in micropatches Long enough to influence growth and competition? And what are the sources of such patches? To answer these questions, the swimming behavior of chemotactic bacteria in seawater samples was examined. Clusters of bacteria formed in conjunction with cell Lysis and excretion by protozoa, These point sources of nutrients spread into spherical patches a few millimeters in diameter and sustained swarms of bacteria for about 10 minutes. Within that time, a large proportion of the nutrients was encountered by bacteria, chemotactic and nonchemotactic alike. Chemotaxis is advantageous for bacteria using patches over a certain size.

引用

页码：2254 / 2256

页数：3

共 24 条

[1] RELEASE OF AMINO-ACIDS AND INORGANIC NUTRIENTS BY HETEROTROPHIC MARINE MICROFLAGELLATES [J].