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Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession

Human activity causes ocean acidification (OA) though the dissolution of anthropogenically generated CO(2) into seawater, and eutrophication through the addition of inorganic nutrients. Eutrophication increases the phytoplankton biomass that can be supported during a bloom, and the resultant uptake...

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Autores principales: Flynn, Kevin J., Clark, Darren R., Mitra, Aditee, Fabian, Heiner, Hansen, Per J., Glibert, Patricia M., Wheeler, Glen L., Stoecker, Diane K., Blackford, Jerry C., Brownlee, Colin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375859/
https://www.ncbi.nlm.nih.gov/pubmed/25716793
http://dx.doi.org/10.1098/rspb.2014.2604
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author Flynn, Kevin J.
Clark, Darren R.
Mitra, Aditee
Fabian, Heiner
Hansen, Per J.
Glibert, Patricia M.
Wheeler, Glen L.
Stoecker, Diane K.
Blackford, Jerry C.
Brownlee, Colin
author_facet Flynn, Kevin J.
Clark, Darren R.
Mitra, Aditee
Fabian, Heiner
Hansen, Per J.
Glibert, Patricia M.
Wheeler, Glen L.
Stoecker, Diane K.
Blackford, Jerry C.
Brownlee, Colin
author_sort Flynn, Kevin J.
collection PubMed
description Human activity causes ocean acidification (OA) though the dissolution of anthropogenically generated CO(2) into seawater, and eutrophication through the addition of inorganic nutrients. Eutrophication increases the phytoplankton biomass that can be supported during a bloom, and the resultant uptake of dissolved inorganic carbon during photosynthesis increases water-column pH (bloom-induced basification). This increased pH can adversely affect plankton growth. With OA, basification commences at a lower pH. Using experimental analyses of the growth of three contrasting phytoplankton under different pH scenarios, coupled with mathematical models describing growth and death as functions of pH and nutrient status, we show how different conditions of pH modify the scope for competitive interactions between phytoplankton species. We then use the models previously configured against experimental data to explore how the commencement of bloom-induced basification at lower pH with OA, and operating against a background of changing patterns in nutrient loads, may modify phytoplankton growth and competition. We conclude that OA and changed nutrient supply into shelf seas with eutrophication or de-eutrophication (the latter owing to pollution control) has clear scope to alter phytoplankton succession, thus affecting future trophic dynamics and impacting both biogeochemical cycling and fisheries.
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spelling pubmed-43758592015-04-09 Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession Flynn, Kevin J. Clark, Darren R. Mitra, Aditee Fabian, Heiner Hansen, Per J. Glibert, Patricia M. Wheeler, Glen L. Stoecker, Diane K. Blackford, Jerry C. Brownlee, Colin Proc Biol Sci Research Articles Human activity causes ocean acidification (OA) though the dissolution of anthropogenically generated CO(2) into seawater, and eutrophication through the addition of inorganic nutrients. Eutrophication increases the phytoplankton biomass that can be supported during a bloom, and the resultant uptake of dissolved inorganic carbon during photosynthesis increases water-column pH (bloom-induced basification). This increased pH can adversely affect plankton growth. With OA, basification commences at a lower pH. Using experimental analyses of the growth of three contrasting phytoplankton under different pH scenarios, coupled with mathematical models describing growth and death as functions of pH and nutrient status, we show how different conditions of pH modify the scope for competitive interactions between phytoplankton species. We then use the models previously configured against experimental data to explore how the commencement of bloom-induced basification at lower pH with OA, and operating against a background of changing patterns in nutrient loads, may modify phytoplankton growth and competition. We conclude that OA and changed nutrient supply into shelf seas with eutrophication or de-eutrophication (the latter owing to pollution control) has clear scope to alter phytoplankton succession, thus affecting future trophic dynamics and impacting both biogeochemical cycling and fisheries. The Royal Society 2015-04-07 /pmc/articles/PMC4375859/ /pubmed/25716793 http://dx.doi.org/10.1098/rspb.2014.2604 Text en http://creativecommons.org/licenses/by/4.0/ © 2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Research Articles
Flynn, Kevin J.
Clark, Darren R.
Mitra, Aditee
Fabian, Heiner
Hansen, Per J.
Glibert, Patricia M.
Wheeler, Glen L.
Stoecker, Diane K.
Blackford, Jerry C.
Brownlee, Colin
Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title_full Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title_fullStr Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title_full_unstemmed Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title_short Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
title_sort ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375859/
https://www.ncbi.nlm.nih.gov/pubmed/25716793
http://dx.doi.org/10.1098/rspb.2014.2604
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