Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic
The microbial dynamics during a spring diatom bloom decline was monitored in the Northeast Atlantic during a five day Lagrangian study (8 - 12th April 2002). Phytoplankton abundance, composition and health status were related to viral and bacterial abundance, zooplankton abundance and grazing rates,...
Published in: | Journal of Plankton Research |
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Oxford University Press
2007
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fthighwire:oai:open-archive.highwire.org:plankt:fbm104v1 2023-05-15T17:41:14+02:00 Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic Llewellyn, Carole A. Tarran, Glen A. Galliene, Chris P. Cummings, Denise G. De Menezes, Alex Rees, Andy P. Dixon, Jo L. Widdicombe, Claire E. Fileman, Elaine S. Wilson, Willie H. 2007-12-05 07:55:26.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/fbm104v1 https://doi.org/10.1093/plankt/fbm104 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/fbm104v1 http://dx.doi.org/10.1093/plankt/fbm104 Copyright (C) 2007, Oxford University Press Article TEXT 2007 fthighwire https://doi.org/10.1093/plankt/fbm104 2016-11-16T18:35:39Z The microbial dynamics during a spring diatom bloom decline was monitored in the Northeast Atlantic during a five day Lagrangian study (8 - 12th April 2002). Phytoplankton abundance, composition and health status were related to viral and bacterial abundance, zooplankton abundance and grazing rates, and bacterial production. Phytoplankton reached maximum concentrations on Day 3 (Chl-a > 5 μg L−1) and declined on Day 5 (Chl-a ∼2 μg L−1) and was dominated (70% of Chl-a) by diatoms. Bacterial production increased substantially to>20 μg C L−1 d−1 on Day 3 and concomitantly large viruses decreased in number by half to < 10 x 103 mL−1. This was followed by a five fold increase in large viruses on Day 5 indicating infection and subsequent lysis on Days 3 and 5 respectively. Micro- and mesozooplankton grazing were not the principal cause for the decline of the bloom and pheophorbide-a showing little variation in concentration from Days 1 to 4 (approx 100 ng L−1) although doubled on Day 5. The poor physiological status of the diatoms, indicated by the high chlorophyllide-a concentrations (50 - 480 ng L−1), likely promoted a series of closely interrelated events involving bacteria and viruses leading to the demise of the diatom bloom. Text Northeast Atlantic HighWire Press (Stanford University) Journal of Plankton Research 30 3 261 273 |
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HighWire Press (Stanford University) |
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English |
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Article Llewellyn, Carole A. Tarran, Glen A. Galliene, Chris P. Cummings, Denise G. De Menezes, Alex Rees, Andy P. Dixon, Jo L. Widdicombe, Claire E. Fileman, Elaine S. Wilson, Willie H. Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
topic_facet |
Article |
description |
The microbial dynamics during a spring diatom bloom decline was monitored in the Northeast Atlantic during a five day Lagrangian study (8 - 12th April 2002). Phytoplankton abundance, composition and health status were related to viral and bacterial abundance, zooplankton abundance and grazing rates, and bacterial production. Phytoplankton reached maximum concentrations on Day 3 (Chl-a > 5 μg L−1) and declined on Day 5 (Chl-a ∼2 μg L−1) and was dominated (70% of Chl-a) by diatoms. Bacterial production increased substantially to>20 μg C L−1 d−1 on Day 3 and concomitantly large viruses decreased in number by half to < 10 x 103 mL−1. This was followed by a five fold increase in large viruses on Day 5 indicating infection and subsequent lysis on Days 3 and 5 respectively. Micro- and mesozooplankton grazing were not the principal cause for the decline of the bloom and pheophorbide-a showing little variation in concentration from Days 1 to 4 (approx 100 ng L−1) although doubled on Day 5. The poor physiological status of the diatoms, indicated by the high chlorophyllide-a concentrations (50 - 480 ng L−1), likely promoted a series of closely interrelated events involving bacteria and viruses leading to the demise of the diatom bloom. |
format |
Text |
author |
Llewellyn, Carole A. Tarran, Glen A. Galliene, Chris P. Cummings, Denise G. De Menezes, Alex Rees, Andy P. Dixon, Jo L. Widdicombe, Claire E. Fileman, Elaine S. Wilson, Willie H. |
author_facet |
Llewellyn, Carole A. Tarran, Glen A. Galliene, Chris P. Cummings, Denise G. De Menezes, Alex Rees, Andy P. Dixon, Jo L. Widdicombe, Claire E. Fileman, Elaine S. Wilson, Willie H. |
author_sort |
Llewellyn, Carole A. |
title |
Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
title_short |
Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
title_full |
Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
title_fullStr |
Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
title_full_unstemmed |
Microbial dynamics during the decline of a spring diatom bloom in the Northeast Atlantic |
title_sort |
microbial dynamics during the decline of a spring diatom bloom in the northeast atlantic |
publisher |
Oxford University Press |
publishDate |
2007 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/fbm104v1 https://doi.org/10.1093/plankt/fbm104 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/fbm104v1 http://dx.doi.org/10.1093/plankt/fbm104 |
op_rights |
Copyright (C) 2007, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbm104 |
container_title |
Journal of Plankton Research |
container_volume |
30 |
container_issue |
3 |
container_start_page |
261 |
op_container_end_page |
273 |
_version_ |
1766142678368518144 |