Mercury forms in the benthic food web of a temperate coastal lagoon (southern Baltic Sea)

Agnieszka Jędruch , Magdalena Bełdowska

Abstract

The study was conducted in the coastal zone of the southern Baltic. The research material consisted of macrozoobenthos and elements of its diet. The samples were analysed for Hg and its labile and stable forms, using the thermodesorption method. The results showed that the level of total Hg in zoobenthos was associated with dietary preferences and the share of bioavailable Hg in its food. The Hg fractionation in the macrofauna was conditioned by biological features (morphological structure) and environmental parameters (oxygenation, pH) which shape the mobility and assimilation of Hg. The absorption of the most toxic organic Hg in macrofauna was more effective in aerobic conditions, at low primary production and with the limited inflow of organic matter. The trophic transfer of Hg was favoured by the limited biomass of primary producers, and consequently of zoobenthos. An important factor influencing the biomagnification was also the share of labile Hg in macrozoobenthos.
Author Agnieszka Jędruch (FOG/IO/DMChEP)
Agnieszka Jędruch,,
- Division of Marine Chemistry and Environmental Protection
, Magdalena Bełdowska (FOG/IO/DMChEP)
Magdalena Bełdowska,,
- Division of Marine Chemistry and Environmental Protection
Journal seriesMarine Pollution Bulletin, ISSN 0025-326X, e-ISSN 1879-3363, (N/A 100 pkt)
Issue year2020
Vol153
Pages1-11
Publication size in sheets0.50
Article number110968
Keywords in Englishlabile mercury, biomagnification, benthic macrofauna, coastal zone, Baltic Sea
ASJC Classification1104 Aquatic Science; 1910 Oceanography; 2310 Pollution
DOIDOI:10.1016/j.marpolbul.2020.110968
Languageen angielski
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 20-03-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.228; WoS Impact Factor: 2018 = 3.782 (2) - 2018=4.349 (5)
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