Results of laboratory experiments examining growth and CO2-fixation rate of two isolates of Crocosphaera watsonii, WH0401 and WH0402, in response to different pCO2 levels and light intensities. Isolates of C. watsonii, a unicellular marine N2-fixing cyanobacterium, were obtained from the western tropical Atlantic Ocean and cultured in the laboratory. WH0402 was grown at two concentrations of CO2 (air and 750 ppm) at five light intensities (18-300 umol quanta m-2 s-1). WH0401 was grown at three concentrations of CO2 (190, air, and 750 ppm) under the same range of light intensities (however WH0401 could not be acclimated to 18 or 50 umol quanta m-2 s-1).
Detailed methods and results are described in the following publication (see Figures 3, 4, and 5):
Garcia, N.S., Fu, F.X., Breene, C.L, Yu, E., Bernhardt, P.W., Mulholland, M.R., and Hutchins, D.A. (2013). Combined effects of CO2 and irradiance on the unicellular N2-fixing cyanobacterium Crocosphaera watsonii: a comparison of two isolates from the Western Tropical Atlantic Ocean. European Journal of Phycology 48: 128-139. DOI: 10.1080/09670262.2013.773383
Related datasets:
C watsonii light experiment
C watsonii CO2 experiment
Hutchins, D. A. (2013) Results of laboratory experiment examining growth, CO2- and N2-fixation of Crocosphaera watsonii in differing pCO2 and light levels; conducted in the Hutchins Laboratory, USC. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 13 June 2013) Version Date 2013-06-13 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3965 [access date]
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