Data/hora: 09/06/2024 02:06:20

Provedor de dados: | 5
País: | France
Título: | Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
Autores: | 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.
Data: | 2015-04
Ano: | 2015
Palavras-chave: | Ocean acidification; Eutrophication; Primary production; Plankton succession; Food security.
Resumo: | Human activity causes ocean acidification (OA) though the dissolution of anthropogenically generated CO2 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.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00286/39723/38196.pdf

https://archimer.ifremer.fr/doc/00286/39723/38201.pdf

DOI:10.1098/rspb.2014.2604

https://archimer.ifremer.fr/doc/00286/39723/

Editor: | Royal Soc
Relação: | info:eu-repo/grantAgreement/EC/FP7/264933/EU//EURO-BASIN
Formato: | application/pdf
Fonte: | Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2015-04 , Vol. 282 , N. 1804 , P. 1-6

Fonte:

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.

info:eu-repo/semantics/openAccess

restricted use