Technology and Engineering
  • ISSN: 2333-2581
  • Modern Environmental Science and Engineering

Evaluation of Phytoplanktonic Primary Productivity in Lagoon of Coyuca De Benítez, Guerrero, 2016-2017

Raúl Arcos Ramos, Eduardo Méndez Ramírez, and Kevin R. Arcos Hernández

Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma De México, Laboratorio de Contaminación Acuática, Mexico

Abstract: Primary productivity was evaluated to establish the trophic index of the lagoon, related to the quantification of chlorophyll, as well as fourteen physical and chemical parameters at five monitoring points at two depth levels from November 2016 to August 2017; the data were subjected to a statistical analysis using the Statgraphics Centurion XVI.I program. The results establish that the Laguna de Coyuca de Benítez (Guerrero) is an oligohaline system, stratified at the points of the Embarcadero, Río and Centro, it presents a high organic load, which significantly increases the availability of nutrients: ammonia (0.513 mg L -1), phosphates (1.68 mg L-1), nitrites (0.059 mg L-1) and nitrates (1.81 mg L-1), which together with the temperature (28.89°C) produce ideal conditions for proliferation planktonic and thus result in a high Productivity (35,993 mg C m3), a level that classifies the lagoon as mesotrophic. The multivariate analysis established that the nutrients, temperature, transparency, depth, chlorophyll concentration and STD are the most important variables, since they describe the behavior of the system due to its direct relationship with organic matter, in addition to physical parameters and Productivity.

Key words: productivity, chlorophyll, mesotrophic

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