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Harmful Algae

Title:		Intraspecific variation in multiple trait responses of Alexandrium ostenfeldii towards elevated pCO(2)
Author(s):		Brandenburg KM; Krock B; Klip HCL; Sluijs A; Garbeva P; Van de Waal DB;
Address:		"Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, Netherlands; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, Netherlands. Electronic address: k.brandenburg@nioo.knaw.nl. Section Ecological Chemistry, Alfred Wegener Institut-Helmholtz Zentrum fur Polar- und Meeresforschung (AWI), Am Handelshafen 12, 27570 Bremerhaven, Germany. Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, Netherlands; Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, Netherlands; Section Shelf Sea System Ecology, Alfred Wegener Institut-Helmholtz Zentrum fur Polar- und Meeresforschung (AWI), Biologische Anstalt Helgoland (BAH), Kurpromenade 201, 27498 Helgoland, Germany. Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, Netherlands. Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708PB Wageningen, Netherlands. Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, Netherlands"
Journal Title:		Harmful Algae
Year:		2021
Volume:		20210115
Issue:
Page Number:		101970 -
DOI:		10.1016/j.hal.2020.101970
ISSN/ISBN:		1878-1470 (Electronic) 1568-9883 (Linking)
Abstract:		"Dissolved oceanic CO(2) concentrations are rising as result of increasing atmospheric partial pressure of CO(2) (pCO(2)), which has large consequences for phytoplankton. To test how higher CO(2) availability affects different traits of the toxic dinoflagellate Alexandrium ostenfeldii, we exposed three strains of the same population to 400 and 1,000 microatm CO(2), and measured traits including growth rate, cell volume, elemental composition, (13)C fractionation, toxin content, and volatile organic compounds (VOCs). Strains largely increased their growth rates and particulate organic carbon and nitrogen production with higher pCO(2) and showed significant changes in their VOC profile. One strain showed a significant decrease in both PSP and cyclic imine content and thereby in cellular toxicity. Fractionation against (13)C increased in response to elevated pCO(2), which may point towards enhanced CO(2) acquisition and/or a downscaling of the carbon concentrating mechanisms. Besides consistent responses in some traits, other traits showed large variation in both direction and strength of responses towards elevated pCO(2). The observed intraspecific variation in phenotypic plasticity of important functional traits within the same population may help A. ostenfeldii to negate the effects of immediate environmental fluctuations and allow populations to adapt more quickly to changing environments"
Keywords:		Carbon *Dinoflagellida Nitrogen Oceans and Seas Phytoplankton Alexandrium ostenfeldii Harmful algal blooms Ocean acidification Phenotypic plasticity;
Notes:		"MedlineBrandenburg, Karen M Krock, Bernd Klip, Helena C L Sluijs, Appy Garbeva, Paolina Van de Waal, Dedmer B eng Research Support, Non-U.S. Gov't Netherlands 2021/02/03 Harmful Algae. 2021 Jan; 101:101970. doi: 10.1016/j.hal.2020.101970. Epub 2021 Jan 15"