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\hypersetup{pdftitle={Population Density of Edaphic Microbiota in Three Livestock Production Systems in Valle del Patia --- Colombia},pdfauthor={Víctor Felipe Orozco, Jesús Gerardo Galindez, Sandra Carlina Rivas, Sandra Morales Velasco, Nelson José Vivas Quila, Jhon Freddy Gutierrez Solis, Noé Albán Lopez, Belisario Hincapie, Michael Peters},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Microbiota, Microorganism, Silvopastoral},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\begin{center}
\Large{\textbf{Population Density of Edaphic Microbiota in Three Livestock Production Systems in Valle del Patia --- Colombia\footnote{\textbf{Contact Address:} Sandra Morales Velasco, University of Cauca, Dep. of Agricultural Sciences, Calle 5 No. 4-70, 2~Popayàn, Colombia, \mbox{e-mail}: \email{samorales@unicauca.edu.co}}\\[0.8ex]}}
\normalsize{\textsc{Víctor Felipe Orozco$^{1}$, Jesús Gerardo Galindez$^{1}$, Sandra Carlina Rivas$^{1}$, Sandra Morales Velasco$^{1}$, Nelson José Vivas Quila$^{1}$, Jhon Freddy Gutierrez Solis$^{2}$, Noé Albán Lopez$^{1}$, Belisario Hincapie$^{2}$, Michael Peters$^{2}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Cauca, Dep. of Agricultural Sciences, Colombia}}}
\item[]{\small{\textit{$^{2}$International Center for Tropical Agriculture (CIAT), Colombia}}}
\end{itemize*}
\index[author]{Orozco, Víctor Felipe}
\index[author]{Galindez, Jesús Gerardo}
\index[author]{Rivas, Sandra Carlina}
\index[author]{Morales Velasco, Sandra}
\index[author]{Vivas Quila, Nelson José}
\index[author]{Gutierrez Solis, Jhon Freddy}
\index[author]{Albán Lopez, Noé}
\index[author]{Hincapie, Belisario}
\index[author]{Peters, Michael}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Microorganisms (bacteria, fungi and actinomycetes) are responsible for the physical and chemical transformations and important indicators of soil quality due to fixation of atmospheric nitrogen, removal of pathogens, processing of organic waste and degradation of pollutants, among others. In addition, the maintenance of high biodiversity can confer resistance and resilience promoting the sustainability of ecosystems that may be affected by the combination of anthropogenic and climatic processes.







According to this, the influence of soil use management on the soil microbiota in Valle del Patía, for which soil samples from three systems (Naturalized, improved and silvopastoril) with six repetitions of each were taken. 5 biochemical tests were performed using selective cultives for the identification and quantification of population density of biological nitrogen"=fixing bacteria BNFB, phosphorus solubilising bacteria  SRS, actinomycetes, bacteria and fungi, with the technique of the most probable number MPN and the use of the probabilistic table of Woomer 1994.







Low density was found for the SRS in the 3 systems, which are important for solubilise and mineralise organic and inorganic phosphorus through mechanisms such as the release of organic acids and hydrolytic enzymes that increase the mobilisation and availability of this element for the nutrition, plus this group is able to produce plant hormones plant growth promoters.







Compared to other functional groups in the improved system, fungi and actinomycetes are present in greater quantity than in the other two systems; in the naturalized the BNFB and bacteria in general stood up, in the silvopastoral functional groups are present almost evenly, showing that a greater diversity of plants, there is a stable population of soil microbiota that perform vital functions in nutrient recycling and expressing the potential of ecosystem services livestock systems of Valle del Patía.



}

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\noindent \textbf{Keywords:} Microbiota, Microorganism, Silvopastoral
\index[key]{Microbiota}
\index[key]{Microorganism}
\index[key]{Silvopastoral}
\end{document}
