Test deformation and chemistry of foraminifera as response to anthropogenic heavy metal input.
Abnormal tests
Ammonia tepida
Cadmium
Elphidium excavatum
Incorporation
Lead
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
01
08
2019
revised:
19
03
2020
accepted:
25
03
2020
entrez:
30
5
2020
pubmed:
30
5
2020
medline:
11
7
2020
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 32469760
pii: S0025-326X(20)30230-7
doi: 10.1016/j.marpolbul.2020.111112
pii:
doi:
Substances chimiques
Metals, Heavy
0
Water Pollutants, Chemical
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
111112Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest None.