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Climate change accelerates recovery of the Tatra Mountain lakes from acidification and increases their nutrient and chlorophyll a concentrations
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SYSNO ASEP 0510074 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Climate change accelerates recovery of the Tatra Mountain lakes from acidification and increases their nutrient and chlorophyll a concentrations Author(s) Kopáček, Jiří (BC-A) RID, ORCID
Kaňa, Jiří (BC-A) RID, ORCID
Bičárová, S. (SK)
Brahney, J. (US)
Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Norton, S. A. (US)
Porcal, Petr (BC-A) RID, ORCID
Stuchlík, Evžen (BC-A) RID, ORCIDNumber of authors 8 Article number 70 Source Title Aquatic Sciences. - : Springer - ISSN 1015-1621
Roč. 81, č. 4 (2019)Number of pages 13 s. Language eng - English Country CH - Switzerland Keywords weathering ; accessory calcite and apatite ; phosphorus ; organic nitrogen Subject RIV DJ - Water Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) Subject RIV - cooperation Institute of Geology - Geochemistry R&D Projects GA17-15229S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support BC-A - RVO:60077344 ; GLU-S - RVO:67985831 UT WOS 000484565300001 EID SCOPUS 85071780353 DOI 10.1007/s00027-019-0667-7 Annotation We evaluated changes in the concentration of cations, anions, nutrients (dissolved organic carbon, DOC, phosphorus, P, and nitrogen forms including nitrate, NO3- and total organic nitrogen, TON), and chlorophyll a (Chl-a) in 31 Tatra Mountain lakes in Slovakia and Poland during their recovery from acidic deposition (1992-2018). Typical effects of decreasing acidic deposition on the lakes' water composition, such as decreasing base cation concentrations, were confounded by climate change and catchment characteristics, including areal proportions of well-developed soils and scree. A climate-related increase in physical erosion provided freshly exposed unweathered granodiorite (the dominant bedrock) to chemical weathering. Dissolution of accessory calcite in the granodiorite increased the in-lake Ca2+ and HCO3- concentrations and reversed the Ca2+ trends, which originally decreased in parallel with strong acid anions. These changes were most pronounced in steep, scree-rich areas, which are most sensitive to physical weathering. Fresh apatite [Ca-5(PO4)(3)(F, Cl, OH)] in the crushed granodiorite acts as a P source at soil pH's between 4 and 5 and in the presence of chelating organic acids within soils. These conditions enhance apatite solubility, which in part explains increasing P in lakes with scree-dominated catchments. Soil recovery from acidification due to decreasing acidic deposition and the neutralizing effect of weathering of erosion-derived accessory calcite were the most likely causes of elevated DOC and P export from soils. Their elevated leaching was accompanied by increasing in-lake concentrations of Chl-a and TON. The increasing TON concentrations were, as for Ca2+, most pronounced in the scree-rich catchments, and represented the most sensitive indicator of the changes in the lake water nutrient composition. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2020 Electronic address https://link.springer.com/article/10.1007%2Fs00027-019-0667-7
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