Consumer species richness and nutrients interact in determining producer diversity.

2 ): We found that the dependence of algae biodiversity on P availability showed a highly significant unimodal relationship, in terms of HB ′ (nonlinear regression, y = 1.69/(1 + ((x − 1.00)/1.74) 2 ); Fig. 2a ), HN ′ (nonlinear regression, y = 2.18/(1 + ((x − 1.63)/1.52) 2 ); Fig. 2b ), JB ( Supplementary Fig.

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