Toxic metals in cyanobacterial mat of Big Lachman Lake, James Ross Island, Antarctica

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COUFALIK Pavel VASINKA Martin KRMICEK Lukas SEVCIK Radek ZVĚŘINA Ondřej BRŮHOVÁ Lenka KOMÁREK Josef

Rok publikování 2024
Druh Článek v odborném periodiku
Časopis / Zdroj Environmental Monitoring and Assessment
Fakulta / Pracoviště MU

Lékařská fakulta

Citace
www https://link.springer.com/article/10.1007/s10661-023-12224-3
Doi http://dx.doi.org/10.1007/s10661-023-12224-3
Klíčová slova Heavy metal contamination; Lake; Sediment; Cyanobacterium; Antarctic Peninsula; Antarctica
Popis The northern part of James Ross Island is the largest deglaciated area in the Antarctic Peninsula region with a unique ecosystem created during the Late Glacial. This research aims to evaluate the degree of contamination of the locality with toxic metals (As, Hg, Cd, and Pb) through bioindicators in the aquatic environment-colonies of cyanobacteria and algae. For this purpose, bottom lake sediments of Big Lachman Lake were studied for contents of Fe, As, Hg, Cd, Pb, Cr, Co, Ni, Cu, and Zn, as well as samples of cyanobacterial mat, in which Fe, As, Hg, Cd, and Pb were determined. Metal contents were determined by means of inductively coupled plasma optical emission spectrometry and atomic absorption spectrometry. The contents of metals in sediments did not differ from the usual values in the area of the Antarctic Peninsula. The bioaccumulation of metals in cyanobacterial mat was evaluated by calculating enrichment factors (the calculation to Fe as a reference element). According to this method, moderate pollution of Big Lachman Lake was confirmed for Hg and Cd.
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