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Paul, Allanah Joy (2020): Growth rates of unicellular cyanobacteria (Crocosphaera watsonii) at different seawater pH. PANGAEA, https://doi.org/10.1594/PANGAEA.919891

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Abstract:
This data set reports the growth rate and carbonate chemistry variables (initial and final) for a single-strain culture study on the unicellular diazotrophic cyanobacteria, Crocosphaera watsonii. C. watsonii was cultured at a six different artificial seawater medium pH levels (pH free range = 7.2 - 8.8) in triplicate to investigate the growth rate response to ocean acidification. Growth rates were highest between pH ~7.9 and 8.2 and no growth detected in 2 of 3 replicates at the lowest pH level. This indicates an optimum curve response pattern of this cyanobacteria species to seawater pH, similar to that already observed in calcifying haptophytes.
Keyword(s):
Carbonate chemistry; Crocosphaera watsonii; cyanobacteria; diazotroph; growth rate; laboratory study; Ocean acidification; Phytoplankton; Single species
Supplement to:
Paul, Allanah Joy; Bach, Lennart Thomas (2020): Universal response pattern of phytoplankton growth rates to increasing CO2. New Phytologist, 228(6), 1710-1716, https://doi.org/10.1111/nph.16806
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesPaul, Allanah Joy
2Bottle numberBottlePaul, Allanah Joy
3Temperature, waterTemp°CPaul, Allanah Joy
4SalinitySalPaul, Allanah Joy
5Alkalinity, totalATµmol/kgPaul, Allanah JoyTitration potentiometricinitial
6Carbon, inorganic, dissolvedDICµmol/kgPaul, Allanah JoyInfrared absorptioninitial
7pHpHPaul, Allanah JoyCalculatedfree scale; initial
8Cell densityCells#/mlPaul, Allanah JoyEpifluorescence microscopyinitial
9Alkalinity, totalATµmol/kgPaul, Allanah JoyTitration potentiometricfinal
10Carbon, inorganic, dissolvedDICµmol/kgPaul, Allanah JoyInfrared absorptionfinal
11pHpHPaul, Allanah JoyCalculatedcalculated for 25°C; free scale; final
12Cell densityCells#/mlPaul, Allanah JoyEpifluorescence microscopyfinal
13Incubation durationInc durdaysPaul, Allanah Joy
14Growth rateµ1/dayPaul, Allanah JoyCalculated
Size:
252 data points

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