Table 3. Result of stepwise multiple regressions with bird species richness and bird density as response variable and MDE predicted richness, AET, plant species richness, tree density, shrub density and BA of trees as predictor variable.

Model: Bird species ∼ AET + Shrub density
<none>		Df	Sum of Sq	RSS	AIC
		-	-	2569.3	110.73
AET		1	2037.4	4606.7	121.57
Shrub Density		1	3336.3	5905.6	127.04
Residuals	Min	1Q	Median	3Q	Max
	-7.078	-5.486	-1.185	1.414	32.487
Coefficients		Estimate	Std. Error	t value	Pr (>|t|)
(Intercept)		1.843	6.395	2.881	0.009**
AET		0.0198	0.0051	3.882	0.001**
Shrub Density		0.000828	0.000166	4.967	0.00008***

MDE - Mid-domain effect; AET- Actual evapotranspiration; BA- Basal area of trees.

Only final model is presented here. Significant codes: ≤0 ‘***’ ≤0.001 ‘**’ ≤0.01 ‘*’.