(Chlorococcales lato sensu (Chlorophyceae, excl. Desmodesmus and Scenedesmus) in aquatic environments in the Coastal Plain of Rio Grande do Sul, Brazil)

• Autor(a) principal: Hentschke, Guilherme Scotta
• Data de Publicação: 2010
• Outros Autores: Torgan, Lezilda Carvalho
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Iheringia. Série Botânica
• Texto Completo: https://isb.emnuvens.com.br/iheringia/article/view/82
• topic: chlorophyceans lato sensu; taxonomy; specifi c richness.; clorofíceas lato sensu; taxonomia; riqueza específi ca.

This study was carried out in isolated and interlinked lagoons, swamps, dams and in a stream of the Coastal Plain of Rio Grande do Sul, in the autumn and spring of 2003. A total of 33 specifi c and infra-specifi c taxa of Chlorococcales lato sensu were identifi ed. Among the aquatic environments, the swamps and lagoons from the Casamento Lagoon area presented the highest specifi c richness. The species occurred more frequently in the shore line than in the pelagic zone of the environments. The study showed that most of the species (59.3%) were of rare occurrence, and Monoraphidium contortum (Thur.) Kom.-Legn. was the only constant species. The taxa Ankistrodesmus densus Kors., A. stipitatus (Chod.) Kom-Legn., Coelastrum cruciatum Schmid., Kirchneriella dinae (Bohl.) Com., and Lagerheimia wratislaviensis var. bispina Hortob. are mentioned for the fi rst time in the State of Rio Grande do Sul. Descriptions, illustrations and measurements of the taxa are presented.