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Changes in bacterial community composition and microbial activities along the longitudinal axis of two canyon-shaped reservoirs with different inflow loading
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SYSNO ASEP 0150575 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Changes in bacterial community composition and microbial activities along the longitudinal axis of two canyon-shaped reservoirs with different inflow loading Author(s) Mašín, Michal (HBU-Z)
Jezbera, Jan (HBU-Z)
Nedoma, Jiří (HBU-Z)
Straškrábová, Viera (HBU-Z) RID
Hejzlar, Josef (HBU-Z)
Šimek, Karel (HBU-Z)Source Title Hydrobiologia. - : Springer - ISSN 0018-8158
Roč. 504, - (2003), s. 99-113Number of pages 15 s. Action Reservoir Limnology and Water Quality /4./ Event date 12.08.2002-16.08.2002 VEvent location České Budějovice Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords reservoirs ; microbial food webs ; bacterial production and community composition Subject RIV EE - Microbiology, Virology R&D Projects GA206/99/0028 GA ČR - Czech Science Foundation (CSF) GA206/02/0003 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z6017912 - HBU-Z, BC-A Annotation Changes in microbial activities and bacterial community composition (BCC) were studied along the longitudinal axes of two reservoirs with contrasting nutrient matter load. The reservoirs showed specific longitudinal changes in plankton communities and BCC shifts. In Orlík reservoir, primary production, bacterial abundance, bacterial production and protozoan bacterivory showed consistant trend of a gradual decrease from the river inflow downstream to the reservoir dam. Shifts in BCC were statistically insignificant. In contrast, the Římov reservoir has a long retention time and its lacustrine area had a limited input of allochthonous organic matter. In Římov the autochthonous processes of primary and bacterial productions were tightly linked and they showed peaks in the middle part of the reservoir. This together with a trend of downstream decreasing nutrient concentrations and increasing protistan grazing pressure seem to support the development of specific BCC in the lacustrine part. Workplace Institute of Hydrobiology (until 2005) Contact Václava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889 Year of Publishing 2004
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