Community analysis of the bacterial assemblages in the winter cover and pelagic layers of a high mountain lake by in situ hybridization

Article Abstract:

The bacterial population is different in the snow, slush and water of a high mountain lake but consists of mainly bacteria from the Proteobacteria beta subclass. In situ hybridization of bacteria with fluorescent labeled rRNA oligonucleotide probes shows high secondary production and level of bacteria reducing 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyltetrazolium chloride. The association between bacterial production, population composition and activity is different in the pelagic and slush layers.

Usage, Nucleic acid probes, Lake ecology

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Effects of current velocity on the nascent architecture of stream microbial biofilms

Article Abstract:

Research has been conducted on microbial biofilms from the forested piedmont stream. The authors describe the nascent architecture and dynamics of these biofilms cultivated under different current velocities in order to incorporate stream water chemistry dynamics, particle behavior and hydrodynamics into the experimental design.

United States, Austria, Science & research, Physiological aspects, Environmental aspects, Genetic aspects, Microbiology, Water chemistry, Microbial ecology

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Phylogenetic and functional heterogeneity of sediment biofilms along environmental gradients in a glacial stream

Article Abstract:

Glacial meltwaters after a storm can contribute bacteria to the streams, mostly Archaea and bacteria of the Cytophaga-Flavobacterium group. Streams have higher growth rates and greater bacterial carbon production following a glacial melt.

Glaciers

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