Influencia de la degradación de los suelos volcánicos mejicanos en la población microbiana

Abstract

Total and specific micro-organisms were determinated through the serial dilution technique in a topo-sequence of volcanica soils located in the Mexican Neo-volcanic Ridge in order to study the existing relationship between microbial abundance, classified by groups, and the level of degradation of these soils. Microbial population was limited in the most eroded soil, while the better-conserved soils had a high microbial abundance. The month of sampling also influenced on the soil microbiology, appearing the higher values in the month with the highest rainfall (August).