Distribución de bacterias potencialmente fijadoras de nitrógeno y su relación con parámetros fisicoquímicos en suelos con tres coberturas vegetales en el sur de la Amazonia colombiana
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| Autores: | , , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2009 |
| Descripción: | Potentially nitrogen-fixing microaerobic and aerobic bacteria were isolated from several Colombian Amazon soils (for-est, pastures and chagras) and two landscapes (floodable and non floodable areas). The abundance and distri-bution 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. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/5436 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5436 |
| Access Level: | acceso abierto |
| Palabra clave: | bacterias fijadoras de nitrógeno suelo amazónico llanura inundable terraza transformación del bosque nitrogen-fixing bacteria amazon soil floodable zone non floodable zone forest transformation |