Temporal distribution of viruses, bacteria and phytoplankton throughout the water column in a freshwater hypereutrophic lake

Autor: Joanne E. Davy, A. C. Baker, Stephen C. Maberly, M.M. De Ville, William H. Wilson, V. J. Goddard, Stephen J. Thackeray, D. G. Adams
Rok vydání: 2005
Předmět:
Zdroj: Aquatic Microbial Ecology. 39:211-223
ISSN: 1616-1564
0948-3055
Popis: Analytical flow cytometry (AFC) and denaturing gradient gel electrophoresis (DGGE) were used to investigate the diversity and dynamics of viruses, bacteria and phytoplankton commu- nities in a hypereutrophic freshwater lake. Samples were taken from different depths throughout the water column over an annual cycle. Priest Pot is a small lake in the Lake District in NW England (UK), and has been well characterised in previous studies; however, little is known of the diversity and dynamics of the virus community. Virus abundance was shown to change over both spatial and tem- poral scales, and appeared to be closely linked to other biotic and abiotic parameters. The highest virus concentrations occurred in the deepest part of the lake at a depth of 3.2 m, in the anoxic layer, at the same time as a peak of abundance of green sulphur bacteria. Sequence analysis of a DGGE band that occurred at the same time suggested a bacterium similar to Chlorobium spp., a green sulphur bacterium, comprised part of this bacterial bloom.
Databáze: OpenAIRE