Aguirre C. M. R., Vanegas Ch. E. A. y Garcia A. N. Evaluation of the trophic status of Izabal Lake in Guatemala
Revista Ciencias Técnicas Agropecuarias [online]. 2016, Vol.25, n.1, pp. 28-31. ISSN 2071-0054, Universidad Agraria de La Habana, Cuba.
The surface waters are the main biotic bodies that continuously receive polluted effluents due to change in land use, especially when secondary forests are converted into agricultural areas for exports purposes. Therefore, it is important to monitor the quality of surface water bodies, in the case Izabal Lake it was established bimonthly by the Authority for the Sustainable Development of the Izabal Basin Lake and Dulce River (AMASURLI). This research evaluated the trophic status of the water of Izabal Lake based on the Carlson index, the historical record of total phosphorus concentration in water samples on 22 points inflows to the lake was analyzed during the time series 2005 to 2014. It was concluded that Izabal Lake is in a eutrophic state and has a tendency to improve its trophic status during the rainy season, the areas with high trophic status are Polochicfor river for intensive agricultural activities; Jocoló for mining; and Dorada Beach for tourism.