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We apply geostatistical methods in the modelling of physical, chemical, and biological variables measured in the Ciénaga Grande of Santa Marta estuary, located on the Caribbean coast of Colombia. The information taken in march of 1997 was analyzed in this ecosystem. This data set indicates that the variables introduce strong structures of space dependence and thus the application of kriging and the subsequent preparation of maps of distribution are recomended in order to give explanation for this type of information. Though the sampling was carried out in the region during the dry season, distribution maps indicate in general that the magnitudes of the variables are more sitnilar to those found traditionally in rainy season, possibly because of consequence of the phenomenon "El niño".
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