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Chlorococcales s. l. (Chlorophyceae) e Zygnematales (Zygnematophyceae) em um açude do Balneário do Lérmen, Rio Grande do Sul, Brasil

2012; Fundación Zoobotánica de Rio Grande do Sul; Volume: 67; Issue: 1 Linguagem: Inglês

ISSN

2446-8231

Autores

Guilherme Scotta Hentschke, João Fernando Prado,

Tópico(s)

Marine and coastal ecosystems

Resumo

In Rio Grande do Sul State green algae are largely unknown and most studies are concentrated in the regions of the Coastal Plain and Central Depression, localitions near Porto Alegre. This paper aims to present the Chlorococcales and Zygnematales species found in a pond at Balneario do Lermen, Itaara, from June 2004 to June 2005. Samples were collected with a plankton net at four stations of the pond. The water pH ranged between 6 and 8. We identified 43 taxa in specific and infra-specific levels and three taxa in generic level. The taxa Radiococcus planktonicus Lund, Golenkinia paucispina West & West, Closterium turgidum Ehrenberg ex Ralfs, Staurastrum caledonense Huber-Pestalozzi and Staurastrum cingulum (West & West) Smith var. obesum Smith are first reports for Rio Grande do Sul State. Chlorophyceae, represented by Chlorococcales, showed greatest specific richness with 38 taxa in comparison with Zygnematophyceae (8).

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