Použití fluorescenčního značení deposice Si pomocí PDMPO u přírodních populací rozsivky Fragilaria crotonensis v různých hloubkách v eutrofní nádrži

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F08%3A00317892" target="_blank" >RIV/60077344:_____/08:00317892 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Application of the PDMPO technique in studying silica deposition in natural populations of Fragilaria crotonensis (Bacillariophyceae) at different depths in a eutrophic reservoir

Popis výsledku v původním jazyce

In 2006, we measured Si deposition in the summer diatom assemblage at various depths in a eutrophic Římov Reservoir using PDMPO technique. Diatom assemblage was exclusively dominated by Fragilaria crotonensis, which formed pronounced subsurface maxima. Concentrations of the main nutrients were low over the whole season, however, at depth the nutrient availability was higher than at the surface. Fragilaria Si deposition rates were eight times higher at the surface than at depth. A half of the populationwas involved in Si deposition at the surface while only 20 % active cells were found at depth. At the surface, Si deposition was limited by phosphorus deficiency; the effect of dissolved Si was not statistically significant. Si deposition at depth was significantly constrained by low light availability despite the 1 % average light attenuation at depth, which is supposed sufficient for photosynthesis.

Název v anglickém jazyce

Application of the PDMPO technique in studying silica deposition in natural populations of Fragilaria crotonensis (Bacillariophyceae) at different depths in a eutrophic reservoir

Popis výsledku anglicky

In 2006, we measured Si deposition in the summer diatom assemblage at various depths in a eutrophic Římov Reservoir using PDMPO technique. Diatom assemblage was exclusively dominated by Fragilaria crotonensis, which formed pronounced subsurface maxima. Concentrations of the main nutrients were low over the whole season, however, at depth the nutrient availability was higher than at the surface. Fragilaria Si deposition rates were eight times higher at the surface than at depth. A half of the populationwas involved in Si deposition at the surface while only 20 % active cells were found at depth. At the surface, Si deposition was limited by phosphorus deficiency; the effect of dissolved Si was not statistically significant. Si deposition at depth was significantly constrained by low light availability despite the 1 % average light attenuation at depth, which is supposed sufficient for photosynthesis.

Druh

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

CEP obor

DA - Hydrologie a limnologie

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

2008

Kód důvěrnosti údajů

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

Název periodika

Journal of Phycology

ISSN

0022-3646

e-ISSN

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Svazek periodika

44

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000254991300025

EID výsledku v databázi Scopus

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