Articles | Volume 12, issue 20
Biogeosciences, 12, 6219–6234, 2015

Special issue: Low oxygen environments in marine, fresh and estuarine...

Biogeosciences, 12, 6219–6234, 2015

Research article 29 Oct 2015

Research article | 29 Oct 2015

Two-dimensional distribution of living benthic foraminifera in anoxic sediment layers of an estuarine mudflat (Loire estuary, France)

A. Thibault de Chanvalon et al.

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Cited articles

Aller, J. Y. and Aller, R. C.: Evidence for localized enhancement of biological associated with tube and burrow structures in deep-sea sediments at the HEEBLE site, western North Atlantic, Deep-Sea Res. Pt. A, 33, 755–790, 1986.
Aller, R. C.: The Effects of Macrobenthos on Chemical Properties of Marine Sediment and Overlying Water, in: Animal-Sediment Relations, edited by: McCall, P. L. and Tevesz, M. J. S., Springer US, 53–102, 1982.
Aller, R. C.: Conceptual models of early diagenetic processes: The muddy seafloor as an unsteady, batch reactor, J. Mar. Res., 62, 815–835, 2004.
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Alve, E. and Murray, J. W.: Temporal Variability in Vertical Distributions of Live (stained) Intertidal Foraminifera, Southern England, J. Foraminifer. Res., 31, 12–24, 2001.
Short summary
We present a new rapid and accurate protocol to simultaneously sample, in two dimensions, benthic living foraminifera at the centimetre scale and dissolved iron and phosphorus at the submillimetre scale. It was applied to a highly bioturbated site in a mudflat of the Loire estuary and showed that, in the suboxic zone, foraminifera are less affected by active burrows (i.e. reoxygenated) than by iron reactive hotspots. This unexpected result calls for a generalization of this new protocol.
Final-revised paper