What is it about?
We tested the vertical migration patterns and spatial distribution of planktonic Foraminifera. We found that the depth habitats of all investigated species are rather stable, and that the Foraminifera do not follow the diurnal pattern that can be observed in many other plankton groups. The spatial distribution of planktonic Foraminifera was found to be very patchy.
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Why is it important?
Diurnal migration could influence the geochemical signal recorded in foraminiferal shells, especially if calcification occurs always at a particular time of day/depth. The fact that the depth habitat of all investigated species is rather stable confirms their robustness for geochemical applications. The patchiness of the assemblage can be of concern if samples of planktonic Foraminifera without spatial replication are investigated.
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This page is a summary of: Highly replicated sampling reveals no diurnal vertical migration but stable species-specific vertical habitats in planktonic foraminifera, Journal of Plankton Research, February 2019, Oxford University Press (OUP),
DOI: 10.1093/plankt/fbz002.
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