Publication Date:
2023-10-28
Description:
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.
Keywords:
Aluminium, gills tissue; Barium, haemolymph fluid and hemocytes; Biological sample; BIOS; Cadmium, digestive gland tissue; Calcium, digestive gland tissue; Calcium, gill tissue; Calcium, haemolymph fluid and hemocytes; Calcium, mantle tissue; Carlini/Jubany Station; Chromium, haemolymph fluid and hemocytes; Cobalt, haemolymph fluid and hemocytes; Copper, digestive gland tissue; Copper, gill tissue; Copper, haemolymph fluid and hemocytes; DATE/TIME; Depth, bathymetric; DEPTH, sediment/rock; Dry weight, valves; Fresh weight, complete; Fresh weight, valves; Hemocystes; ICP-OES, Inductively coupled plasma - optical emission spectrometry; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; Inductively coupled plasma - mass spectrometry (ICP-MS); Iron, digestive gland tissue; Iron, gill tissue; Iron, haemolymph fluid and hemocytes; Iron, mantle tissue; Jubany_Dallmann; King George Island, Antarctic Peninsula; Laternula_HEC_2010; Laternula elliptica, height of valve; Laternula elliptica, length of valve; Laternula elliptica, width of valve; LATITUDE; LONGITUDE; Magnesium, digestive gland tissue; Magnesium, gill tissue; Magnesium, haemolymph fluid and hemocytes; Magnesium, mantle tissue; Manganese, gill tissue; Manganese, haemolymph fluid and hemocytes; Neubauer haemocytometer, improved; Nickel, haemolymph fluid and hemocytes; Phosphorus, haemolymph fluid and hemocytes; Potassium, digestive gland tissue; Potassium, gill tissue; Potassium, haemolymph fluid and hemocytes; Potassium, mantle tissue; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Sample ID; Sodium, haemolymph fluid and hemocytes; SPP1158; Strontium, digestive gland tissue; Strontium, gill tissue; Strontium, haemolymph fluid and hemocytes; Strontium, mantle tissue; Vernier caliper; Zinc, digestive gland tissue; Zinc, gill tissue; Zinc, haemolymph fluid and hemocytes; Zinc, mantle tissue
Type:
Dataset
Format:
text/tab-separated-values, 1538 data points
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