The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone

Neumann, A; Flohr, A ORCID: https://orcid.org/0000-0002-5018-5379. 2018 The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone. African Journal of Marine Science, 40 (1). 91-96. https://doi.org/10.2989/1814232X.2018.1437774

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Official URL: http://dx.doi.org/10.2989/1814232X.2018.1437774

Abstract/Summary

We collected living individuals of the bivalve Lembulus bicuspidatus, which shows an unusual preference for the oxygen-deficient habitat found at the Angola–Benguela Frontal Zone of the southeastern Atlantic. With a series of incubation experiments with 15N-labelled nitrate as a tracer in combination with membrane-inlet mass spectrometry, we studied the potential contribution of L. bicuspidatus to nitrate reduction in the upper sediment layer. Our preliminary results suggest that L. bicuspidatus enhances nitrate reduction if the oxygen concentration is sufficiently low. The Lembulus-mediated nitrate reduction rate is then similar to the rate of microbial nitrate reduction in the surrounding sediment.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.2989/1814232X.2018.1437774
ISSN:	1814-232X
Date made live:	11 Mar 2020 13:45 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/527114

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.2989/1814232X.2018.1437774

ISSN:

1814-232X

Date made live:

11 Mar 2020 13:45 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/527114