Počet záznamů: 1
Widespread diminishing anthropogenic effects on calcium in freshwaters
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SYSNO ASEP 0509978 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Widespread diminishing anthropogenic effects on calcium in freshwaters Tvůrce(i) Weyhenmeyer, G. A. (SE)
Hartmann, J. (DE)
Hessen, D. O. (NO)
Kopáček, Jiří (BC-A) RID, ORCID
Hejzlar, Josef (BC-A) RID, ORCID
Jacquet, S. (FR)
Hamilton, S. K. (US)
Verburg, P. (NZ)
Leach, T. H. (US)
Schmid, M. (CH)
Flaim, G. (IT)
Nõges, T. (EE)
Noges, P. (EE)
Wentzky, V. C. (DE)
Rogora, M. (IT)
Rusak, J. A. (CA)
Kosten, S. (NL)
Paterson, A. M. (CA)
Teubner, K. (AT)
Higgins, S. N. (CA)
Lawrence, G. (US)
Kangur, K. (EE)
Kokorite, I. (LT)
Cerasino, L. (IT)
Funk, C. (US)
Harvey, R. (US)
Moatar, F. (FR)
de Wit, H. A. (NO)
Zechmeister, T. (AT)Celkový počet autorů 29 Číslo článku 10450 Zdroj.dok. Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 9, JUL (2019)Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova crustacean zooplankton ; global carbon ; chemistry ; forest ; lakes Vědní obor RIV DJ - Znečištění a kontrola vody Obor OECD Environmental sciences (social aspects to be 5.7) Způsob publikování Open access Institucionální podpora BC-A - RVO:60077344 UT WOS 000475845400054 EID SCOPUS 85069530746 DOI 10.1038/s41598-019-46838-w Anotace Calcium (Ca) is an essential element for almost all living organisms. Here, we examined global variation and controls of freshwater Ca concentrations, using 440 599 water samples from 43 184 inland water sites in 57 countries. We found that the global median Ca concentration was 4.0 mg L-1 with 20.7% of the water samples showing Ca concentrations <= 1.5 mg L-1, a threshold considered critical for the survival of many Ca-demanding organisms. Spatially, freshwater Ca concentrations were strongly and proportionally linked to carbonate alkalinity, with the highest Ca and carbonate alkalinity in waters with a pH around 8.0 and decreasing in concentrations towards lower pH. However, on a temporal scale, by analyzing decadal trends in > 200 water bodies since the 1980s, we observed a frequent decoupling between carbonate alkalinity and Ca concentrations, which we attributed mainly to the influence of anthropogenic acid deposition. As acid deposition has been ameliorated, in many freshwaters carbonate alkalinity concentrations have increased or remained constant, while Ca concentrations have rapidly declined towards or even below pre-industrial conditions as a consequence of recovery from anthropogenic acidification. Thus, a paradoxical outcome of the successful remediation of acid deposition is a globally widespread freshwater Ca concentration decline towards critically low levels for many aquatic organisms. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2020 Elektronická adresa https://www.nature.com/articles/s41598-019-46838-w.pdf
Počet záznamů: 1