Effects of Land Use Change and Seasonality of Precipitation on Soil Nitrogen in a Dry Tropical Forest Area in the Western Llanos of Venezuela

Table 4

Soil microbial nitrogen (Nmic) in the forest and pastures.

Season	Depth (cm)	Nmic (g m^−2)
		Forest	YP	OP
End rainy season	0–5	2.4 ± 1.2^Aa	0.2 ± 0.1^Ab	1.4 ± 0.3^Aa
Dry season	0–5	0.7 ± 0.7^Ba	1.1 ± 0.6^Ba	1.0 ± 0.7^Ba
Early rainy season	0–5	1.3 ± 0.4^Ba	1.2 ± 0.5^Ba	2.0 ± 0.5^Cb

Mean values ± standard deviation. Different lowercase letters indicate significant differences between sites (). Different capital letters indicate significant differences between seasons (). YP: 5-year-old pasture; OP: 18-year-old pasture.