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Table 4 Results of the regression analyses of the relations between the DM yields of grasses within the defined subhabitats (dependent variable) and Evapotranspiration Tree Equivalents (ETTE) ha-1 (independent variable).

From: Tree thinning as an option to increase herbaceous yield of an encroached semi-arid savanna in South Africa

Subhabitat Season Regression equation r2 r n P
Between trees (UCA) 1 y = 57.188 - 0.00765x 0.282 -0.532 7 0.220 ns
  2 ln y = 7.017 - 0.000510x 0.861 -0.928 7 0.003 **
  3 ln y = 6.708 - 0.000579x 0.828 -0.910 7 0.004 **
Under trees (CA) 1 ln y = 5.052 - 0.000274x 0.679 -0.824 7 0.044 *
  2 ln y = 6.936 - 0.000257x 0.662 -0.814 7 0.049 *
  3 ln y = 6.099 - 0.000349x 0.567 -0.753 7 0.084 ns
Trees removed (RCA) 1 y = 274.648 - 0.0479x 0.358 -0.599 7 0.209 ns
  2 ln y = 7.745 - 0.000284x 0.868 -0.932 7 0.007 **
  3 ln y = 6.936 - 0.000466x 0.980 -0.990 7 0.002 **