Influencia de los nutrientes en la concentración de clorofila en la laguna Valle Hermoso del cantón Guano.

Abstract

It was evaluated how the nutrients influence on “a” chlorophyll concentration, as well as the trophic state in which the Valle Hermoso lagoon of Guano canton was found, generating information on the water system, which is non-existent. Five representative points of the lagoon to be monitored during December 2016 – March 2017 were established; determining in situ by means of direct reading of the portable digital multiparameter, parameters such as temperature, pH and conductivity, transparency was measured with Secchi disk, nutrients such as nitrites, nitrates, sulfates and total phosphorus were analyzed using the standard methods, ammoniacal nitrogen was analyzed by the method of Nessler, chlorophyll was analyzed by the trichromatic method, once the results were obtained, the correlations between the different parameters analyzed were determined, as well as an analysis of main components with the use of SPSS program and then the Trophic Status Index by Carlson was used in order to determine the levels of eutrophy of the lagoon. Significant correlations were found between nutrients such as sulfates, ammmoniacal nitrogen and nitates with chlorophyll “a” directly. By analyzing principal components, two components were obtained, the first composed of sulfates, ammmoniacal nitrogen and chlorophyll “a” and the second composed of phosphates and total phosphorus. These comoponents account for 94% of the variability of the data set, being the parameters of these components which provide more information to study the water of the lagoon water since they interact more. Using the Trophic State Index by Carlson, it was determined that the lagoon is in the eutrophic state, and it is recommended that environmental measures be adopted so that the water quality does not continue to deteriorate.