SESSILE BACTERIA - IMPORTANT COMPONENT OF MICROBIAL-POPULATION IN SMALL MOUNTAIN STREAMS
SESSILE BACTERIA - IMPORTANT COMPONENT OF MICROBIAL-POPULATION IN SMALL MOUNTAIN STREAMS
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DOI：
10.4319/lo.1978.23.6.1214
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发表时间：
1978-01-01
影响因子：
4.5
通讯作者：
GREEN, RB
中科院分区：
文献类型：
--
作者：
GEESEY, GG;MUTCH, R;GREEN, RB
荧光显微镜的直接计数表明，在加拿大艾伯塔省的未受污染的山间溪流中，附生细菌在数量上比自由漂浮的细菌更重要。沉水岩石上表面固着细菌的浓度与浮游藻类生物量的波动相吻合。对天然样品的薄片标本的电子显微镜观察表明，附着的藻类为细菌定植提供了表面。细菌和藻类[Phormidium spp.、Hydrurus fotidus和Hannaea arcus]之间的这种密切的物理关系是由纤维网络调节的，这些纤维网络大量出现，看起来像是覆盖在河床上的一层粘液。1条支流固着细菌浓度与附生藻类生物量之间的关系表明，在某些情况下，附生微生物种群受附生微生物数量的控制，而不是附生初级生产力。
Direct counts by epifluorescence microscopy demonstrated that epilithic bacteria were numerically more important than free-floating bacteria in unpolluted mountain streams [in Alberta, Canada]. Concentrations of sessile bacteria associated with the upper surfaces of submerged rocks coincided with fluctuations in epilithic algal biomass. Electron microscopy of thin-section preparations of natural samples showed that the attached algae provided a surface for bacterial colonization. This close physical relationship between the bacteria and algae [Phormidium spp., Hydrurus foetidus and Hannaea arcus] was mediated by a network of fibers which, in mass, appeared as a layer of slime covering the streambed. The relationship between sessile bacterial concentrations and epilithic algal biomass in 1 tributary suggested that in some cases factors other than epilithic primary production governed the attached microbial population.