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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 physico-chemical 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.


Documento: Artículo
Título:Changes in the phytoplankton of Lake Planetario after a restoration process
Autor:Ehrenhaus, C.; Vigna, M.S.
Filiación:Department of Biology, University of Louisiana at Lafayette, Lafayette, LA 70504-2451, United States
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 11, 4o piso, C1428EHA Buenos Aires, Argentina
Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Av. Ángel Gallardo 430, 1403 Buenos Aires, Argentina
Palabras clave:Argentina; Bloom; Buenos Aires; Microcystis aeruginosa; Restoration; Urban recreational lake; brackish water; colonization; community composition; habitat restoration; lake ecosystem; new taxon; phytoplankton; restoration ecology; species diversity; summer; winter; Argentina; Buenos Aires [Argentina]; South America; Aves; Bacillariophyta; Chlorophyta; Cyanobacteria; Microcystis aeruginosa; Pisces
Página de inicio:319
Página de fin:328
Título revista:Darwiniana
Título revista abreviado:Darwiniana


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---------- APA ----------
Ehrenhaus, C. & Vigna, M.S. (2006) . Changes in the phytoplankton of Lake Planetario after a restoration process. Darwiniana, 44(2), 319-328.
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---------- CHICAGO ----------
Ehrenhaus, C., Vigna, M.S. "Changes in the phytoplankton of Lake Planetario after a restoration process" . Darwiniana 44, no. 2 (2006) : 319-328.
Recuperado de [ ]
---------- MLA ----------
Ehrenhaus, C., Vigna, M.S. "Changes in the phytoplankton of Lake Planetario after a restoration process" . Darwiniana, vol. 44, no. 2, 2006, pp. 319-328.
Recuperado de [ ]
---------- VANCOUVER ----------
Ehrenhaus, C., Vigna, M.S. Changes in the phytoplankton of Lake Planetario after a restoration process. Darwiniana. 2006;44(2):319-328.
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