Comparing the effects of resource enrichment and grazing on a bacterioplankton community of a meso-eutrophic reservoir.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077387%3A_____%2F03%3A62033011" target="_blank" >RIV/60077387:_____/03:62033011 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/03:00004732

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparing the effects of resource enrichment and grazing on a bacterioplankton community of a meso-eutrophic reservoir.

Popis výsledku v původním jazyce

We examined changes in a microbial community in reaction to shifts in predation pressure and resources in a meso-eutrophic reservoir. Manipulations consisted of size fractionation and either in situ incubation or transplantation from the dam area to theriver area, which differed in P-availability. We monitored bacterial abundance, bacterial production, protistan grazing, as well as bacterial community composition (BCC). Populations transplanted to the relatively P-rich river area showed a 3- to 6-foldincreases in bacterial and heterotrophic nanoflagellates abundance and bacterivory compared to the treatments incubated at the dam area. In the transplanted community, nearly all groups of bacteria showed increased growth rates. In contrast, at the moreP-limited dam, the top-down manipulations induced significant changes in BCC. Thus, we found that BCC changes with predation in resource-limited bacterioplankton but that predation plays a minor role when resource limitation is relaxed.

Název v anglickém jazyce

Comparing the effects of resource enrichment and grazing on a bacterioplankton community of a meso-eutrophic reservoir.

Popis výsledku anglicky

We examined changes in a microbial community in reaction to shifts in predation pressure and resources in a meso-eutrophic reservoir. Manipulations consisted of size fractionation and either in situ incubation or transplantation from the dam area to theriver area, which differed in P-availability. We monitored bacterial abundance, bacterial production, protistan grazing, as well as bacterial community composition (BCC). Populations transplanted to the relatively P-rich river area showed a 3- to 6-foldincreases in bacterial and heterotrophic nanoflagellates abundance and bacterivory compared to the treatments incubated at the dam area. In the transplanted community, nearly all groups of bacteria showed increased growth rates. In contrast, at the moreP-limited dam, the top-down manipulations induced significant changes in BCC. Thus, we found that BCC changes with predation in resource-limited bacterioplankton but that predation plays a minor role when resource limitation is relaxed.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EE - Mikrobiologie, virologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Aquatic Microbial Ecology

ISSN

0948-3055

e-ISSN

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Svazek periodika

31

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

123-135

Kód UT WoS článku

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EID výsledku v databázi Scopus

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