Characterication of metals in hemolymph and tissues of the Antarctic bivalve Laternula elliptica


A high input of lithogenic sediment from glaciers was assumed to be responsible for high Fe and Mn contents in the Antarctic soft shell clam Laternula elliptica at King George Island. Indeed, withdrawal experiments indicated a strong influence of environmental Fe concentrations on Fe contents in bivalve hemolymph, but no significant differences in hemolymph and tissue concentrations were found among two sites of high and lower input of lithogenic debris. Comparing Fe and Mn concentrations of porewater, bottom water, and hemolymph from sampling sites, Mn appears to be assimilated as dissolved species, whereas Fe apparently precipitates as ferrihydrite within the oxic sediment or bottom water layer prior to assimilation by the bivalve. Hence, we attribute the high variability of Fe and Mn accumulation in tissues of L. elliptica around Antarctica to differences in the geochemical environment of the sediment and the resulting Fe and Mn flux across the benthic boundary.

Supplement to: Poigner, Harald; Monien, Patrick; Monien, Donata; Kriews, Michael; Brumsack, Hans-Jürgen; Wilhelms-Dick, Dorothee; Abele, Doris (2013): Influence of the porewater geochemistry on Fe and Mn assimilation in Laternula elliptica at King George Island (Antarctica). Estuarine, Coastal and Shelf Science, 135, 285-295

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Metadata Access
Creator Poigner, Harald; Monien, Patrick ORCID logo; Monien, Donata ORCID logo; Kriews, Michael; Brumsack, Hans-Jürgen ORCID logo; Wilhelms-Dick, Dorothee; Abele, Doris ORCID logo
Publisher PANGAEA
Publication Year 2013
Funding Reference German Research Foundation Crossref Funder ID 5472008 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1538 data points
Discipline Earth System Research
Spatial Coverage (-58.690W, -62.239S, -58.641E, -62.225N); King George Island, Antarctic Peninsula
Temporal Coverage Begin 2010-01-21T18:30:00Z
Temporal Coverage End 2010-03-18T13:00:00Z