Rising trends of dissolved organic matter in drinking-water reservoirs as a result of recovery from acidification in the Ore Mts., Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F09%3A00000151" target="_blank" >RIV/00025798:_____/09:00000151 - 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

Rising trends of dissolved organic matter in drinking-water reservoirs as a result of recovery from acidification in the Ore Mts., Czech Republic

Popis výsledku v původním jazyce

The concentration of chemical oxygen demand (COD), a common proxy for dissolved organic matter (DOM), was measured at seven drinking-water reservoirs and four streams between 1969 and 2006. Nine of them showed significant DOM increases (median COD change+0.08 mg L-1 yr-1). Several potential drivers of these trends were considered, including air temperature, rainfall, land-use and water sulfate concentration. Temperature and precipitation influenced inter-annual variations, but not long-term trends. Thelong-term DOM increase was significantly associated with declines of acidic deposition, especially sulfur deposition. Surface water sulfate concentrations decreased from a median of 62 mg L-1 to 27 mg L-1 since 1980. The magnitude of DOM increase was positively correlated with average DOM concentration (R2=0.79, p<0.001). Simultaneously, DOM concentration was positively correlated with the proportion of Histosols within the catchments (R2=0.79, p<0.001).

Název v anglickém jazyce

Rising trends of dissolved organic matter in drinking-water reservoirs as a result of recovery from acidification in the Ore Mts., Czech Republic

Popis výsledku anglicky

The concentration of chemical oxygen demand (COD), a common proxy for dissolved organic matter (DOM), was measured at seven drinking-water reservoirs and four streams between 1969 and 2006. Nine of them showed significant DOM increases (median COD change+0.08 mg L-1 yr-1). Several potential drivers of these trends were considered, including air temperature, rainfall, land-use and water sulfate concentration. Temperature and precipitation influenced inter-annual variations, but not long-term trends. Thelong-term DOM increase was significantly associated with declines of acidic deposition, especially sulfur deposition. Surface water sulfate concentrations decreased from a median of 62 mg L-1 to 27 mg L-1 since 1980. The magnitude of DOM increase was positively correlated with average DOM concentration (R2=0.79, p<0.001). Simultaneously, DOM concentration was positively correlated with the proportion of Histosols within the catchments (R2=0.79, p<0.001).

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/GP526%2F07%2FP349" target="_blank" >GP526/07/P349: Vliv vápnění na dostupnost bazických kationtů a transformaci organické hmoty v lesním ekosystému</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Environmental Pollution

ISSN

0269-7491

e-ISSN

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Svazek periodika

157

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000272334500033

EID výsledku v databázi Scopus

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