Climate change increasing calcium and magnesium leaching from granitic alpine catchments

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00479732" target="_blank" >RIV/60077344:_____/17:00479732 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/17:10336670

Result on the web

<a href="http://dx.doi.org/10.1021/acs.est.6b03575" target="_blank" >http://dx.doi.org/10.1021/acs.est.6b03575</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.est.6b03575" target="_blank" >10.1021/acs.est.6b03575</a>

Result language

angličtina

Original language name

Climate change increasing calcium and magnesium leaching from granitic alpine catchments

Original language description

Climate change can reverse trends of decreasing calcium and magnesium [Ca + Mg] leaching to surface waters in granitic alpine regions recovering from acidification. Despite decreasing concentrations of strong acid anions (-1.4 mu eq L-1 yr(-1)) during 2004-2016 in nonacidic alpine lakes in the Tatra Mountains (Central Europe), the average [Ca + Mg] concentrations increased (2.5 mu eq L-1 yr(-1)), together with elevated terrestrial export of bicarbonate (HCO3-, 3.6 mu eq L-1 yr(-1)). The percent increase in [Ca + Mg] concentrations in nonacidic lakes (0.3-3.2% yr(-1)) was significantly and positively correlated with scree proportion in the catchment area and negatively correlated with the extent of soil cover. Leaching experiments with freshly crushed granodiorite, the dominant bedrock,showed that accessory calcite and (to a lesser extent) apatite were important sources of Ca. We hypothesize that elevated terrestrial export of [Ca + Mg] :and HCO3- resulted from increased weathering caused by accelerated physical erosion of rocks due to elevated climate-related mechanical forces (an increasing frequency of days with high precipitation amounts and air temperatures fluctuating around 0 degrees C) during the last 2-3 decades. These climatic effects on water chemistry are especially strong in catchments where fragmented rocks are more exposed to weathering, and their position is less stable than in soil.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10503 - Water resources

Project

<a href="/en/project/GA14-09231S" target="_blank" >GA14-09231S: Disentangling the effects of changing environmental chemistry and climate on biogeochemistry and biodiversity of natural alpine soils and waters</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Environmental Science and Technology

ISSN

0013-936X

e-ISSN

—

Volume of the periodical

51

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

159-166

UT code for WoS article

000391346900018

EID of the result in the Scopus database

2-s2.0-85017524556