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 6

Relationship between soil microbial carbon and soil microbial nitrogen in the forest and pastures.

Season	Depth  (cm)	Cmic/Nmic
		Forest	YP	OP
End rainy season	0–5	16.1 ± 7.2^Aa	169.4  ± 68.1^Ab	27.6 ± 9.5^Aba
Dry season	0–5	29.9 ± 29.3^Aa	34.1 ± 25.6^Ba	36.4 ± 16.0^Aa
Early rainy season	0–5	26.5 ± 8.3^Aa	16.2 ± 9.7^Bb	16.1 ± 7.4^Bb

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. Cmic: microbial carbon; Nmic: microbial nitrogen.