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Gayana. Botánica

versão impressa ISSN 0016-5301versão On-line ISSN 0717-6643


ALMANZA, Viviana et al. Phytoplankton blooms and changes in the phytoplankton community structure in three eutrophic shallow lakes of Central Chile. Gayana Bot. [online]. 2016, vol.73, n.2, pp.191-205. ISSN 0016-5301.

The phytoplankton community of three eutrophic shallow lakes located in the same geographical area was compared over a period of three years. Although these lakes are similar in many respects (e.g. location, origin, average depth, high concentration of nutrients, human influence) develop very different phytoplankton communities. Lo Galindo is dominated by Zygnematophyceae, Cyanophyceae and Chlorophyceae, while in Lo Méndez the groups Dinophyceae and Bacillariophyceae and in Las Tres Pascualas the Chlorophyceae, Cryptophyceae and Euglenophyceae. In Lo Mendez and Lo Galindo are frequent blooms of different groups of algae (cyanobacteria, green algae, diatoms and dinoflagellates), which generated wealth increases at different times of the year, even in winter they were presented. In Las Tres Pascualas blooms were rare. The occurrence and frequency of blooms of species representatives of the M, C, Y and Lo functional groups, and VII, VI, IV and V morphological groups, reflect the eutrophic lakes, being indicative of the degree of contamination of these systems that influence their present and future use.

Palavras-chave : Blooms; phytoplankton; functional groups; eutrophication; urban lakes.

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