Articles | Volume 17, issue 3
Research article
17 Feb 2020
Research article |  | 17 Feb 2020

Diel quenching of Southern Ocean phytoplankton fluorescence is related to iron limitation

Christina Schallenberg, Robert F. Strzepek, Nina Schuback, Lesley A. Clementson, Philip W. Boyd, and Thomas W. Trull


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (26 Nov 2019) by Koji Suzuki
AR by Natascha Töpfer on behalf of the Authors (18 Dec 2019)  Author's response
ED: Publish subject to technical corrections (03 Jan 2020) by Koji Suzuki
Short summary
Measurements of phytoplankton health still require the use of research vessels and are thus costly and sparse. In this paper we propose a new way to assess the health of phytoplankton using simple fluorescence measurements, which can be made autonomously. In the Southern Ocean, where the most limiting nutrient for phytoplankton is iron, we found a relationship between iron limitation and the depression of fluorescence under high light, the so-called non-photochemical quenching of fluorescence.
Final-revised paper