Articles | Volume 13, issue 17
https://doi.org/10.5194/bg-13-4959-2016
https://doi.org/10.5194/bg-13-4959-2016
Research article
 | 
08 Sep 2016
Research article |  | 08 Sep 2016

Spring blooms in the Baltic Sea have weakened but lengthened from 2000 to 2014

Philipp M. M. Groetsch, Stefan G. H. Simis, Marieke A. Eleveld, and Steef W. M. Peters

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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: Reconsider after major revisions (26 Apr 2016) by Katja Fennel
AR by Philipp Groetsch on behalf of the Authors (04 Jun 2016)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (10 Jun 2016) by Katja Fennel
RR by Anonymous Referee #2 (25 Jun 2016)
ED: Publish subject to minor revisions (Editor review) (27 Jun 2016) by Katja Fennel
AR by Philipp Groetsch on behalf of the Authors (29 Jun 2016)  Author's response   Manuscript 
ED: Publish as is (04 Jul 2016) by Katja Fennel
AR by Philipp Groetsch on behalf of the Authors (23 Jul 2016)
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Short summary
Phytoplankton spring bloom phenology was derived from a 15-year time series (2000–2014) of ship-of-opportunity chlorophyll a fluorescence observations in the Baltic Sea. Bloom peak concentrations have declined over the study period, while bloom duration has increased. It is concluded that nutrient reduction efforts led to decreasing bloom intensity, while changes in Baltic Sea environmental conditions associated with global change corresponded to a lengthening spring bloom period.
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