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Tatters, Avery O; Fu, Feixue; Hutchins, David A (2012): Seawater carbonate chemistry and toxicity of Pseudo-nitzschia fraudulenta in a laboratory experiment [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823383, Supplement to: Tatters, AO et al. (2012): High CO2 and Silicate Limitation Synergistically Increase the Toxicity of Pseudo-nitzschia fraudulenta. PLoS ONE, 7(2), e32116, https://doi.org/10.1371/journal.pone.0032116.g004

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Abstract:
Anthropogenic CO2 is progressively acidifying the ocean, but the responses of harmful algal bloom species that produce toxins that can bioaccumulate remain virtually unknown. The neurotoxin domoic acid is produced by the globally-distributed diatom genus Pseudo-nitzschia. This toxin is responsible for amnesic shellfish poisoning, which can result in illness or death in humans and regularly causes mass mortalities of marine mammals and birds. Domoic acid production by Pseudo-nitzschia cells is known to be regulated by nutrient availability, but potential interactions with increasing seawater CO2 concentrations are poorly understood. Here we present experiments measuring domoic acid production by acclimatized cultures of Pseudo-nitzschia fraudulenta that demonstrate a strong synergism between projected future CO2 levels (765 ppm) and silicate-limited growth, which greatly increases cellular toxicity relative to growth under modern atmospheric (360 ppm) or pre-industrial (200 ppm) CO2 conditions. Cellular Si:C ratios decrease with increasing CO2, in a trend opposite to that seen for domoic acid production. The coastal California upwelling system where this species was isolated currently exhibits rapidly increasing levels of anthropogenic acidification, as well as widespread episodic silicate limitation of diatom growth. Our results suggest that the current ecosystem and human health impacts of toxic Pseudo-nitzschia blooms could be greatly exacerbated by future ocean acidification and 'carbon fertilization' of the coastal ocean.
Keyword(s):
Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Coast and continental shelf; Growth/Morphology; Immunology/Self-protection; Laboratory experiment; Macro-nutrients; North Pacific; Ochrophyta; Pelagos; Phytoplankton; Pseudo-nitzschia fraudulenta; Single species; Temperate
Further details:
Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Coverage:
Latitude: 34.080000 * Longitude: -119.050000
Date/Time Start: 2010-03-01T00:00:00 * Date/Time End: 2010-03-31T00:00:00
Event(s):
Ventura * Latitude: 34.080000 * Longitude: -119.050000 * Date/Time Start: 2010-03-01T00:00:00 * Date/Time End: 2010-03-31T00:00:00 * Method/Device: Experiment (EXP)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2013-11-28.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesTatters, Avery O
2TreatmentTreatTatters, Avery O
3ReplicateReplTatters, Avery O
4Biogenic silicabSiO2µmol/lTatters, Avery O
5Carbon, organic, particulatePOCµmol/lTatters, Avery O
6Nitrogen, organic, particulatePONµmol/lTatters, Avery O
7Phosphorus, organic, particulatePOPµmol/lTatters, Avery O
8Domoic acid per cellDA/cellpg/#Tatters, Avery OHigh Performance Liquid Chromatography (HPLC)
9Domoic acid production per cellDA prod/cellpg/#/dayTatters, Avery O
10Growth rateµ1/dayTatters, Avery O
11Cell densityCells#/mlTatters, Avery O
12Carbon, inorganic, dissolvedDICµmol/kgTatters, Avery OCoulometric titration
13pHpHTatters, Avery OPotentiometricNBS scale
14Temperature, waterTemp°CTatters, Avery O
15SalinitySalTatters, Avery O
16Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
17pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
18Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
19Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
20Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Alkalinity, totalATµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
439 data points

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