Ocean acidification with (de)eutrophication will alter future phytoplankton growth and succession
| Type | Article | ||||||||||||
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| Date | 2015-04 | ||||||||||||
| Language | English | ||||||||||||
| Other localization | http://zenodo.org/record/32826 | ||||||||||||
| Author(s) | Flynn Kevin J.1, Clark Darren R.2, Mitra Aditee1, Fabian Heiner1, Hansen Per J.3, Glibert Patricia M.4, Wheeler Glen L.2, 5, Stoecker Diane K.4, Blackford Jerry C.2, Brownlee Colin5 | ||||||||||||
| Affiliation(s) | 1 : Swansea Univ, Ctr Sustainable Aquat Res, Swansea SA2 8PP, W Glam, Wales. 2 : Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England. 3 : Univ Copenhagen, Marine Biol Sect, DK-3000 Helsingor, Denmark. 4 : Univ Maryland, Horn Point Lab, Ctr Environm Sci, Cambridge, MD 21613 USA. 5 : Marine Biol Assoc UK, Plymouth PL1 2PB, Devon, England. |
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| Source | Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2015-04 , Vol. 282 , N. 1804 , P. 1-6 | ||||||||||||
| DOI | 10.1098/rspb.2014.2604 | ||||||||||||
| WOS© Times Cited | 62 | ||||||||||||
| Keyword(s) | ocean acidification, eutrophication, primary production, plankton succession, food security | ||||||||||||
| Abstract | 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. | ||||||||||||
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