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Table 3 The main and interactive effect of herbivory and plant life form on soil chemical properties (exchangeable cations and CEC)

From: Medium-term interactive effects of herbivores and plant life form on the biochemistry of shallow sandy soils in a protected semi-arid savanna

Factor

Variable

Na (mg/kg)

K (mg/kg)

Mg (mg/kg)

Ca (mg/kg)

CEC (cmol( +)/kg)

Mean(± SE)

Exclosure

 Full

273.85 (± 25.353)b

48.44 (± 7.225)a

26.67 (± 5.095)a

1022.58 (± 183.09)a

1.85 (± 0.138)a

 Partial

278.65 (± 25.348)b

40.26 (± 7.38)a

35.23 (± 5.0499)a

1088.25 (± 183.032)a

2.03 (± 0.136)a

 Open

378.65 (± 26.185)a

56.169 (± 7.462)a

21.41 (± 5.262)a

1086.17 (± 189.05)a

2.11 (± 0.143)a

Veg. type

 Tree

318.49 (± 21.821)a

60.71 (± 6.218)a

36.95 (± 4.385)a

1266.11 (± 157.579)a

2.02 (± 0.119)a

 Grass

302.4 (19.999)a

35.86 (± 5.699)b

18.6 (± 4.019)b

665.22 (± 144.424)b

1.98 (± 0.109)a

Main effect

p-values

 Exclosure

0.004**

0.0776 ns

0.0629 ns

0.0726 ns

0.399 ns

 Veg. type

0.512 ns

0.0039**

0.0013***

0.002***

0.617 ns

Interaction

 Exclosure x Veg. type

0.017*

0.043*

0.0281*

0.1 ns

0.683 ns

  1. Means with different letter [a, b] for the same factor within the column are significantly different (signification codes: **p < 0.01, *p < 0.05, ns = not significant). SE is the standard error