Growth rates of unicellular cyanobacteria (Crocosphaera watsonii) at different seawater pH

• Main Author: Paul, Allanah Joy
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Alkalinity; total; Bottle number; Calculated; Carbon; inorganic; dissolved; Carbonate chemistry; Cell density; Crocosphaera watsonii; cyanobacteria; diazotroph; Epifluorescence microscopy; growth rate; Incubation duration; Infrared absorption; laboratory study; Ocean acidification; pH; Phytoplankton; Salinity; Single species; Species; Temperature; water; Titration potentiometric
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.919891; https://doi.org/10.1594/PANGAEA.919891

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.