Počet záznamů: 1
Widespread Increases in Iron Concentration in European and North American Freshwaters
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SYSNO ASEP 0481710 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Widespread Increases in Iron Concentration in European and North American Freshwaters Tvůrce(i) Björnerås, C. (SE)
Weyhenmeyer, G. A. (SE)
Evans, C. D. (GB)
Gessner, M. O. (DE)
Grossart, H. P. (DE)
Kangur, K. (EE)
Kokorite, I. (LT)
Kortelainen, P. (FI)
Laudon, H. (SE)
Lehtoranta, J. (FI)
Lottig, N. (US)
Monteith, D. T. (GB)
Nõges, P. (EE)
Nõges, T. (EE)
Oulehle, Filip (UEK-B) RID, ORCID, SAI
Riise, G. (NO)
Rusak, J. A. (CA)
Räike, A. (FI)
Sire, J. (LT)
Sterling, S. (CA)
Kritzberg, E. S. (SE)Celkový počet autorů 21 Zdroj.dok. Global Biogeochemical Cycles. - : Wiley - ISSN 0886-6236
Roč. 31, č. 10 (2017), s. 1488-1500Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova browning ; climate change ; freshwaters ; iron ; trends Vědní obor RIV EH - Ekologie - společenstva Obor OECD Environmental sciences (social aspects to be 5.7) CEP GA15-08124S GA ČR - Grantová agentura ČR Výzkumná infrastruktura CzeCOS II - 90061 - Ústav výzkumu globální změny AV ČR, v. v. i. Institucionální podpora UEK-B - RVO:86652079 UT WOS 000416625200002 EID SCOPUS 85031758536 DOI 10.1002/2017GB005749 Anotace American Geophysical Union. All Rights Reserved. Recent reports of increasing iron (Fe) concentrations in freshwaters are of concern, given the fundamental role of Fe in biogeochemical processes. Still, little is known about the frequency and geographical distribution of Fe trends or about the underlying drivers. We analyzed temporal trends of Fe concentrations across 340 water bodies distributed over 10 countries in northern Europe and North America in order to gain a clearer understanding of where, to what extent, and why Fe concentrations are on the rise. We found that Fe concentrations have significantly increased in 28% of sites, and decreased in 4%, with most positive trends located in northern Europe. Regions with rising Fe concentrations tend to coincide with those with organic carbon (OC) increases. Fe and OC increases may not be directly mechanistically linked, but may nevertheless be responding to common regional-scale drivers such as declining sulfur deposition or hydrological changes. A role of hydrological factors was supported by covarying trends in Fe and dissolved silica, as these elements tend to stem from similar soil depths. A positive relationship between Fe increases and conifer cover suggests that changing land use and expanded forestry could have contributed to enhanced Fe export, although increases were also observed in nonforested areas. We conclude that the phenomenon of increasing Fe concentrations is widespread, especially in northern Europe, with potentially significant implications for wider ecosystem biogeochemistry, and for the current browning of freshwaters. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2019
Počet záznamů: 1