The University of Southampton
University of Southampton Institutional Repository

Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals

Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals
Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals
To examine the potentially competing influences of microzooplankton and calcite mineral ballast on organic matter remineralization, we incubated diatoms in darkness in rolling tanks with and without added calcite minerals (coccoliths) and microzooplankton (rotifers). Concentrations of particulate organic matter (POM in suspension or in aggregates), of dissolved organic matter (DOM), and of dissolved inorganic nutrients were monitored over 8 days. The presence of rotifers enhanced the remineralization of ammonium and phosphate, but not dissolved silicon, from the biogenic particulate matter, up to 40% of which became incorporated into aggregates early in the experiment. Added calcite resulted in rates of excretion of ammonium and phosphate by rotifers that were depressed by 67% and 36%, respectively, demonstrating the potential for minerals to inhibit the destruction of POM by zooplankton in the water column. Lastly, the presence of the rotifers and added calcite minerals resulted in a more rapid initial rate of aggregation, although not a greater overall amount of aggregation during the experiment.
1726-4170
5755-5765
Le Moigne, F.A.C.
548c65d1-ce2d-4302-8d64-e80a964533b5
Gallinari, M.
12b60ad9-669e-41ac-9338-bc769a9dcb25
Laurenceau, E.
5829de64-9727-408e-bbe4-59bd7f0dd874
De La Rocha, C.L.
1d731268-8926-4101-bee3-da281cecec35
Le Moigne, F.A.C.
548c65d1-ce2d-4302-8d64-e80a964533b5
Gallinari, M.
12b60ad9-669e-41ac-9338-bc769a9dcb25
Laurenceau, E.
5829de64-9727-408e-bbe4-59bd7f0dd874
De La Rocha, C.L.
1d731268-8926-4101-bee3-da281cecec35

Le Moigne, F.A.C., Gallinari, M., Laurenceau, E. and De La Rocha, C.L. (2013) Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals. Biogeosciences, 10 (9), 5755-5765. (doi:10.5194/bg-10-5755-2013).

Record type: Article

Abstract

To examine the potentially competing influences of microzooplankton and calcite mineral ballast on organic matter remineralization, we incubated diatoms in darkness in rolling tanks with and without added calcite minerals (coccoliths) and microzooplankton (rotifers). Concentrations of particulate organic matter (POM in suspension or in aggregates), of dissolved organic matter (DOM), and of dissolved inorganic nutrients were monitored over 8 days. The presence of rotifers enhanced the remineralization of ammonium and phosphate, but not dissolved silicon, from the biogenic particulate matter, up to 40% of which became incorporated into aggregates early in the experiment. Added calcite resulted in rates of excretion of ammonium and phosphate by rotifers that were depressed by 67% and 36%, respectively, demonstrating the potential for minerals to inhibit the destruction of POM by zooplankton in the water column. Lastly, the presence of the rotifers and added calcite minerals resulted in a more rapid initial rate of aggregation, although not a greater overall amount of aggregation during the experiment.

This record has no associated files available for download.

More information

Published date: 2 September 2013
Organisations: Marine Biogeochemistry

Identifiers

Local EPrints ID: 363019
URI: http://eprints.soton.ac.uk/id/eprint/363019
ISSN: 1726-4170
PURE UUID: 11ff4397-cfdf-4345-9c42-1b48da0d9f42

Catalogue record

Date deposited: 11 Mar 2014 10:25
Last modified: 14 Mar 2024 16:17

Export record

Altmetrics

Contributors

Author: F.A.C. Le Moigne
Author: M. Gallinari
Author: E. Laurenceau
Author: C.L. De La Rocha

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×