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| Format: | Artículo científico |
| Language: | en |
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Instituto de Botánica Darwinion
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=66944202 |
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Table of Contents:
- Changes in the phytoplankton of Lake Planetario after a restoration process Constanza Ehrenhaus María Susana Vigna Biología bloom Argentina restoration Buenos Aires Microcystis aeruginosa Lake Planetario is an urban recreational lake that suffered a Microcystis aeruginosa bloom in March 1999. At the same time the birds and fishes that inhabited the lake died, probably affected by microcystin, hepatotoxin that some strains of Miycrocyistis produce. The City of Buenos Aires requested Aguas Argentinas to restore the lake. Restoration tasks included treatment of sediments and pumping of water from a brackish aquifer. For one year, monthly samples were taken with a phytoplankton net, the qualitative and quantitative composition of the phytoplankton were studied, and physicochemical data were collected. The structure and composition of the phytoplankton were studied and revealed that due to the turbulence caused by the pumping of water, the Cyanophyta were controlled and phytoplankton diversity increased significantly. Chlorophyta dominated during spring, Cyanophyta during fall and Bacillariophyta during summer and winter. The change in conductivity provided a favourable environment for new taxa to colonize the lake, with representatives of taxa typical for brackish water. 2006 artículo científico 0011-6793 https://www.redalyc.org/articulo.oa?id=66944202 en http://www.redalyc.org/revista.oa?id=669 Darwiniana application/pdf Instituto de Botánica Darwinion Darwiniana (Argentina) Num.2 Vol.44