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Start Over Author "Cardona, Gladys I." Journal revista de biologia tropical
2 results on '"Cardona, Gladys I."'

2. [Distribution of potentially nitrogen-fixing bacteria and its relationship with physicochemical parameters in soils with three vegetation types in the southern Colombian Amazon region].

Author

Mantilla-Paredes AJ, Cardona GI, Peña-Venegas CP, Murcia U, Rodríguez M, and Zambrano MM

Subjects
Bacteria, Aerobic classification, Bacteria, Aerobic isolation & purification, Colombia, Colony Count, Microbial, Bacteria, Aerobic metabolism, Nitrogen Fixation, Soil analysis, Soil Microbiology, Trees
Abstract

Potentially nitrogen-fixing microaerobic and aerobic bacteria were isolated from several Colombian Amazon soils (forest, pastures and chagras) and two landscapes (floodable and non floodable areas). The abundance and distribution of bacteria were evaluated, as well as their relationship with soil physical and chemical characteristics. Landscape had a direct influence on the abundance of the microaerobic bacteria, with higher numbers in forest and pasture soils in non-floodable zones. The aerobic isolates (N=51) were grouped into 19 morphologies, with the highest numbers found in forest soil in floodable zones. A higher number of aerobic morphologies was shared among forest sites (Nonmetric Multidimensional Scaling and Analysis of Similarity p<0.05), and 40% of the distribution was explained by lime percentage and Al concentration.

Published
2009

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