Ecological Archives E094-180-A2

Adriano Caliman, Luciana S. Carneiro, João J. F. Leal, Vinicius F. Farjalla, Reinaldo L. Bozelli, Francisco A. Esteves. 2013. Biodiversity effects of ecosystem engineers are stronger on more complex ecosystem processes. Ecology 94:1977–1985. http://dx.doi.org/10.1890/12-1385.1

Appendix B. Pearson’s correlations between the coefficients of determination (R²) of the species richness–ecosystem processes regressions and the F values for the nested effects of species composition with the nontransgressive overyielding (Dmax) and transgressive overyielding (DT ) values for the four ecosystem processes analyzed in this study.

 

FigB1

Fig. B1. Pearson’s correlations between the (a, b) coefficients of determination (R²) of the species richness–ecosystem processes regressions and the (c, d) F values for the nested effects of species composition with the Dmax and DT indexes for the four ecosystem processes analyzed in this study. The R², F, Dmax, DTvalues and abbreviations for each ecosystem process are the same as those in Table 1 and Figs. 1 and 2 presented in the main body of the paper.

Only the Dmax index was significantly correlated with the coefficient of the species richness effect (R²) and the coefficient of the species composition effect (F value) of the analyzed ecosystem processes. However, Dmax and R² were positively correlated, whereas Dmax and the F value were negatively correlated. These results suggest that Dmax was more efficient than DT in capturing effects of species complementarity on rates of ecosystem processes, and that transgressive overyielding is stronger for more complex ecosystem processes that depend more on the effects of species richness than for simpler ecosystem processes that depend more on the effects of species composition.


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