The response of a small stream in the Lesní potok forested catchment, central Czech Republic, to a short-term in-stream acidification.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F03%3A09033157" target="_blank" >RIV/67985831:_____/03:09033157 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00025798:_____/03:00000433

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The response of a small stream in the Lesní potok forested catchment, central Czech Republic, to a short-term in-stream acidification.

Popis výsledku v původním jazyce

Lesni potok stream in central Czech Republic was artificially acidified with HCl for 4hours to assess the role of stream substrate in acid-neutralization and recovery. The pH was lowered from 4.7 to 3.2. Desorption of Ca and Mg, and desorption or solution of Al dominated acid-neutralization; Al mobilization dominated later. The stream substrate released 4542 meq Ca, 1184 meq Mg, and 2329 meq Al over a 70m long by 1m wide reach. Adsorption of SO4 and desorption (?) of F occurred during the acidificationphase of the experiment. The reactions were rapidly reversible for Ca, Mg, and SO4 but not symmetric as the substrate resorbed 1083, 790 and 0 meq Ca, Mg, and Al, respectively, in a 4 hour recovery period. Desorption of SO4 occurred during the resorptionof Ca and Mg. A mathematical mass balance model, MASS (Modeling Acidification of Stream Sediments), was developed to simulate the adsorption and desorption of base cations during the experiment.

Název v anglickém jazyce

The response of a small stream in the Lesní potok forested catchment, central Czech Republic, to a short-term in-stream acidification.

Popis výsledku anglicky

Lesni potok stream in central Czech Republic was artificially acidified with HCl for 4hours to assess the role of stream substrate in acid-neutralization and recovery. The pH was lowered from 4.7 to 3.2. Desorption of Ca and Mg, and desorption or solution of Al dominated acid-neutralization; Al mobilization dominated later. The stream substrate released 4542 meq Ca, 1184 meq Mg, and 2329 meq Al over a 70m long by 1m wide reach. Adsorption of SO4 and desorption (?) of F occurred during the acidificationphase of the experiment. The reactions were rapidly reversible for Ca, Mg, and SO4 but not symmetric as the substrate resorbed 1083, 790 and 0 meq Ca, Mg, and Al, respectively, in a 4 hour recovery period. Desorption of SO4 occurred during the resorptionof Ca and Mg. A mathematical mass balance model, MASS (Modeling Acidification of Stream Sediments), was developed to simulate the adsorption and desorption of base cations during the experiment.

Druh

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

CEP obor

DD - Geochemie

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

Hydrology and Earth System Sciences

ISSN

1027-5606

e-ISSN

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Svazek periodika

7

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

411-422

Kód UT WoS článku

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EID výsledku v databázi Scopus

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