DOI: 10.7280/d16688
title: Dataset S1: Results of modeled spectral competition between Synechococcus type IV chromatic acclimaters (CA4) and blue and green light-harvesting specialists

description: This dataset is the output of a one-dimensional model that
 simulated the time evolution of growth of Synechococcus phycoerythrin
 pigment types, with low, high, and variable ratios of phycourobilin to
 phycoerythrobilin (PUB:PEB; pigment types 3a, 3c and 3d,
 respectively). The model used to generate the output was built on
 existing published equations of competition for light color within an
 ocean water column by Stomp and coworkers. Our version of the model was
 coded in MATLAB, and the depth of the water column was
 made variable. Additional absorption by chlorophyll and
 coccolithophores were added as options to the standard absorption by
 seawater. All growth and photosynthetic parameters for the
 Synechococcus strains were kept constant except for their specific
 absorption spectra, with the 3d chromatic acclimater having a variable
 absorption spectrum. This ensured differences in growth were only
 attributed to differences in light color absorption. The model
 solution yielded the relative abundance of the three cyanobacteria pigment
 types integrated across the one-dimensional layer, and results from all
 simulations are contained within this dataset. 
description: Data contained within this dataset resulted from simulations from
 a type IV chromatic acclimation model
 (https://doi.org/10.5281/ZENODO.4663350) fully described in Lovindeer, R.,
 Ustick, L. J., Primeau, F., Martiny, A. C., & Mackey, K. R. M.
 (2021) Modeling ocean color niche selection by
 <em>Synechococcus</em> blue-green acclimaters. Journal of
 Geophysical Research: Oceans: 126 (https://doi.org/10.1029/2021JC017434),
 with corresponding model equations fully described in the paper's
 Supplemental Text. The model equations were modified from Stomp et al.
 (2008) <em>The American Naturalist</em>, 172(5),
 E169–E185.  The output is given in
 cells/m<sup>3 </sup>as well as the percentages within the
 final population at model equilibrium. Parameters tested within the model
 to generate the output dataset were: light color (white, cyan, blue,
 green, and daylight); light color oscillation time between two colors;
 concentrations of secondary light absorbers (denoted by the spectra of
 chlorophyll and of E. huxleyi); and the depth of the model's
 homogenous (mixed) layer. In-coming light spectra for
 colors were measured using the emission spectra of LED lights. Daylight
 spectrum was . The model was parameterized using monoculture experiments
 of <em>Synechococcus</em> strains with parameters listed in
 the Supplement of the accompanying manuscript.
description: Simulation numbers are listed in column 1. Parameter descriptions
 and their inclusion for each simulation are listed columns 2 - 8 in the
 following order: input light color, light color oscillation time, maximum
 growth rates of the cyanobacteria cells in green light (GL), and blue
 light (BL), concentrations of chlorophyll-a (CHL), and coccolithophores
 (Coccos) in mg/m<sup>3</sup>, and the depth of the
 model's mixed layer (MLD) in meters.  Output
 results are recorded as abundances of cyanobacteria
 (<em>Synechococcus</em> pigment types 3a, 3c, and 3d strains)
 in cells/m<sup>3</sup> and range in magnitude from
 10<sup>11</sup> to 10<sup>13</sup> with no change
 in magnitude across columns 9 to 11. The fraction of
 each <em>Synechococcus</em> pigment type in the population at
 model equilibrium is calculated and displayed in columns 12-14. See
 accompanying README for details on the parameters.