Ecological Archives E095-014-A3

Nicole L. Goebel, Christopher A. Edwards, Michael J. Follows, Jonathan P. Zehr. 2014. Modeled diversity effects on microbial ecosystem functions of primary production, nutrient uptake, and remineralization. Ecology 95:153–163. http://dx.doi.org/10.1890/13-0421.1

Appendix C. Diversity–productivity relationship in coastal and offshore domain-subregions calculations.

The full model domain incorporates sub-ecosystems and traits of locally important phytoplankton types that quantitatively impact results. Similar analysis in smaller subregions revealed whether qualitative outcomes were altered. The diversity–productivity relationship was calculated for coastal and offshore subregions, delineated by the 1000 m isobath, and also showed concave-down structure with higher and lower magnitude, respectively (Fig. C1.A–B). Other tests of still smaller subdomains also revealed robust concave-down structure (not shown).

FigC1

Fig. C1. The phytoplankton diversity–productivity relationship calculated for (A) coastal and (B) offshore regions for the baseline experiment. Primary productivity is spatially and temporally averaged, and vertically integrated. Ensembles containing one to five phytoplankton types in the baseline experiment consisted of 15 replicates. The remaining ensembles in the baseline and temperature niche-width experiments consisted of 10 replicates. Ensemble means (black line) reveal a concave-down structure. Box plots show the median (gray line), 25th and 75th percentiles (box edges), the range in the most extreme data points excluding outliers (whiskers), and the outliers (points beyond approximately 2.7 standard deviations from the mean, shown as stars) for each ensemble.


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