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

Short Communications. The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone
Short Communications. The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone
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.
1814-232X
91-96
Neumann, A
f004825f-59bd-489d-8337-55148a4da3ca
Flohr, A
1e293a22-bdba-408e-9608-fed8b65e4e79
Neumann, A
f004825f-59bd-489d-8337-55148a4da3ca
Flohr, A
1e293a22-bdba-408e-9608-fed8b65e4e79

Neumann, A and Flohr, A (2018) Short Communications. 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. (doi:10.2989/1814232X.2018.1437774).

Record type: Article

Abstract

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.

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Accepted/In Press date: 1 January 2018
e-pub ahead of print date: 29 March 2018

Identifiers

Local EPrints ID: 419691
URI: http://eprints.soton.ac.uk/id/eprint/419691
ISSN: 1814-232X
PURE UUID: 390cd67c-ca16-4064-afd3-97f57d509940
ORCID for A Flohr: ORCID iD orcid.org/0000-0002-5018-5379

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Date deposited: 19 Apr 2018 16:30
Last modified: 09 Jan 2022 06:08

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Contributors

Author: A Neumann
Author: A Flohr ORCID iD

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