Phosphorus inactivation by aluminum in the water column and sediments: Lowering of in-lake phosphorus availability in an acidified watershed-lake ecosystem.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077387%3A_____%2F00%3A62003034" target="_blank" >RIV/60077387:_____/00:62003034 - 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

Phosphorus inactivation by aluminum in the water column and sediments: Lowering of in-lake phosphorus availability in an acidified watershed-lake ecosystem.

Popis výsledku v původním jazyce

Atmospheric acidification of a watershed-lake ecosystem may provide the natural conditions for in-lake P inactivation similar to the lake restoration techniques based on the artificial addition of Al salt to the water column. Atmospheric deposition of strong acids has resulted in acidification and nitrogen-saturation of soils in the Plešné Lake watershed and, consequently, in high terrestrial losses of Al, sulphate, and nitrate to the lake. Biological removal of nitrate and sulphate contributes to the total in-lake alkalinity generation and to the increase in water pH. Under higher pH, ionic Al species hydrolyze and form colloidal Al hydroxides (Alpart), which adsorb orthophosphate (o-P) in the water column. The Al hydroxides settle and increase the Psorption capacity of the sediment. The elevated content of fresh Alpart in the surface sediment reduces P release to the water column after o-P liberation from ferric oxyhydroxides during anoxia, because Alpart complexes are not sensitive

Název v anglickém jazyce

Phosphorus inactivation by aluminum in the water column and sediments: Lowering of in-lake phosphorus availability in an acidified watershed-lake ecosystem.

Popis výsledku anglicky

Atmospheric acidification of a watershed-lake ecosystem may provide the natural conditions for in-lake P inactivation similar to the lake restoration techniques based on the artificial addition of Al salt to the water column. Atmospheric deposition of strong acids has resulted in acidification and nitrogen-saturation of soils in the Plešné Lake watershed and, consequently, in high terrestrial losses of Al, sulphate, and nitrate to the lake. Biological removal of nitrate and sulphate contributes to the total in-lake alkalinity generation and to the increase in water pH. Under higher pH, ionic Al species hydrolyze and form colloidal Al hydroxides (Alpart), which adsorb orthophosphate (o-P) in the water column. The Al hydroxides settle and increase the Psorption capacity of the sediment. The elevated content of fresh Alpart in the surface sediment reduces P release to the water column after o-P liberation from ferric oxyhydroxides during anoxia, because Alpart complexes are not sensitive

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

<a href="/cs/project/GA206%2F97%2F0072" target="_blank" >GA206/97/0072: Biodiverzita mikrobiální smyčky, tok uhlíku a koloběh živin v acidifikovaných jezerech na Šumavě: cesty a řídící mechanismy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2000

Kód důvěrnosti údajů

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

Název periodika

Limnology and Oceanography

ISSN

0024-3590

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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