EFECTO DEL FUEGO SOBRE ALGUNOS MICROORGANISMOS EN UN SITIO DE PLANTACIÓN FORESTAL
Keywords:
Prescribed forest fire, forest plantations, tropical forest, roza-tumba-quema, Quintana RooAbstract
This work was performed in a forest plantation area ofthe "San Felipe-Bacalar" Campo Experimental Forestal, at Quintana Roo.
Considering the importance of knowing the rnicrobiological behavior of soil when burning is used as a practice to prepare the plantation site.
Soil samples were obtained at two different depths (surface and 20 cm) with a periodicity of 15, 30, 60 and 120 days after buming, and a witness was kept (unbumt).
Samples were analyzed at the laboratory using the Stotzky methodology, which assesses the rate of CO2 released (mg/100 g of soil). Sorne soil microorganisms such as bacteria, fungi and actinomycetes were also quantified.
Results indicate that most microbiological activity of soil occurs at soil surface. Pire affects soil microbiology during the first 30 days after the burning takes place, with a fast recovery after such period.
Out of quantified microorganisms, bacteria were the most affected ones by fire; but they were also the ones with the highest growth after burning.
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