Abstract

GOMEZ LUNA, Liliana et al. Implementation of a risk management protocol for phycotoxins occurrence in the Baconao Lagoon, Santiago de Cuba. Bol. Invest. Mar. Cost. [online]. 2021, vol.50, n.1, pp.43-78.  Epub Sep 17, 2021. ISSN 0122-9761.  https://doi.org/10.25268/bimc.invemar.2021.50.1.980.

The Baconao Lagoon is a tropical, coastal and littoral ecosystem which receives continuous natural and human perturbations; favoring the eutrophication process, and consequently, the phytoplankton proliferation. The starting point of this research begins with a massive fish kill report into the lagoon on May 2017, being the main objective to document the implementation of a risk management protocol for the phycotoxin presence, adapted to the ecosystem conditions, considering the characterization of the risk event, focusing on mitigation and prevention of negative impacts. The presence of a mix Harmful Algal Bloom (HAB) in remission was confirmed, with negative implications to the entire ecosystem. It was identified the presence of abundant motile cells of Gymnodinium sp., Karlodinium micrum and dinoflagellate cells rests, as well as high values of chlorophyll a, being the highest concentration 20.37 ± 0.04 µgL-1; low values of dissolved oxygen, and an important bacterial contamination, with the dominance of cyanobacteria. The implementation of a risk management protocol was documented with important methodological guidelines to follow to the management of similar risk events, where the intersectoral alliance performs a key success factor.

Keywords : Cyanobacteria; Harmful Algal Bloom (HAB); Gymnodinium sp.; Karlodinium micrum; Baconao Lagoon..

        · abstract in Spanish     · text in English | Spanish     · English ( pdf ) | Spanish ( pdf )