Test deformation and chemistry of foraminifera as response to anthropogenic heavy metal input


Contact
Gerhard.Kuhn [ at ] awi.de

Abstract

Benthic foraminifera are sensitive to environmental changes and widely used as tools to monitor pollution. Rising numbers of deformed tests are often used as indicator for elevated levels of heavy metals, but little is known about the relation between heavy metal incorporation into foraminiferal tests and the formation of test deformities. Here, two sediment cores from the south-eastern North Sea are compared, regarding the occurrence of deformed foraminiferal tests, foraminiferal test chemistry (ICP-MS) and bulk sediment Pb content (XRF). The total abundance of deformed foraminiferal tests seems not to align temporarily with historical heavy metal pollution. Therefore, we suggest that foraminifera react with test deformation to other environmental stressors than the studied heavy metals. Test chemistry reflects historical increased bulk sediment heavy metal content, despite a slight temporal offset. We propose that Pb (and Cd) are only incorporated into foraminiferal tests above a yet to be defined threshold of pollution.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
51749
DOI 10.1016/j.marpolbul.2020.111112

Cite as
Boehnert, S. , Birkelund, A. , Schmiedl, G. , Kuhnert, H. , Kuhn, G. , Hass, H. and Hebbeln, D. (2020): Test deformation and chemistry of foraminifera as response to anthropogenic heavy metal input , Marine Pollution Bulletin, 155 , p. 111112 . doi: 10.1016/j.marpolbul.2020.111112


Share


Citation

Research Platforms

Campaigns


Actions
Edit Item Edit Item