Kinetics and diversity indices of phytoplankton in T ́zonot type watery in Kopomá

Abstract

The cenotes, made up of a mixture of karst soil, fresh and salt water, provide ecosystem services: water, climate, landscape, and headquarters for religious and recreational activities. They are niche species that are part of the trophic chains and conserve valuable genetic information product of their evolution and adaptation to the ecosystem. It is important to know them before they can be lost due to anthropogenic activities. The objective of this work was to study the spatiotemporal biodiversity of phytoplankton in the Chen Ha Cenote. Monitoring activities included spring, summer and winter seasons. Environmental variables were monitored with a multiparameter probe. Classification of microorganisms by microscopy. The pH was slightly alkaline in all monitoring results. Temperature varied from 28.7 to 32 ° C, dissolved oxygen ranged from 2.4 to 3.2 ppm. Conductivity was 2.962 during spring and 2650 microS.cm2 in wintertime. 41 species were identified in spring, 27 in summer and 29 in winter. During the spring and winter seasons diatoms predominated. Navícula, Coelosphaerium and Nitzschia were the dominant species in spring, summer, and winter periods, respectively. In accordance with the Jackard similarity index, greater similarity was observed between spring and winter showing a value of 0.458, compared to summer with a value of 0.3877.