Table 3 The effect of the proportion of perennial grasses’ biomass (PG%) on community characteristics.

From: Both mass ratio effects and community diversity drive biomass production in a grassland experiment

 

χ 2

df

P

marginal R2

conditional R2

Standing biomass

6.4004

1

0.011

0.034

0.076

Species number

29.728

1

<0.0001

0.130

0.235

Species evenness2

126.14

2

<0.0001

0.392

0.443

FRic

12.301

1

0.0005

0.061

0.132

FEve

0.323

1

0.570

—

—

FDiv

5.004

1

0.025

0.027

0.027

  1. Notations: FRic – Functional richness, FEve – Functional evenness, FDiv – Functional divergence.
  2. The effect of PG% on every variable was tested with linear mixed models. Marginal R2 is the proportion of variance explained by the fixed effects, while conditional R2 is the proportion explained by the full model, including both fixed and random effects.
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