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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The genus Vaucheria D.C. (Vaucheriaceae, Xanthophyceae) in southern Brazil: taxonomic and ecological aspects

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Author(s):
Aurélio Fajar Tonetto [1] ; Cleto Kaveski Peres [2] ; Ciro Cesar Zanini Branco [3]
Total Authors: 3
Affiliation:
[1] Universidade Estadual Paulista. FCL - Brasil
[2] Universidade Federal da Integração Latino-Americana - Brasil
[3] Universidade Federal da Integração Latino-Americana - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Biota Neotropica; v. 12, n. 2, p. 197-204, 2012-06-00.
Abstract

(The genus Vaucheria D.C. [Vaucheriaceae, Xanthophyceae] in Southern Brazil: taxonomic and ecology aspects). Taxonomic survey and environmental occurrence of the genus Vaucheria were investigated in 105 streams from Southern Brazil. Abiotic variables were correlated to species occurrence. Three species were identified according to gametangia characteristics: V. geminata (Vauch.) D.C., V. taylorii Blum and V. sessilis (Vauch.) D.C.; the latter is reported for the first time in Brazil. The results of this survey suggest that Vaucheria is influenced by environmental characteristics, occurring mainly, in neutral to slightly acidic pH, low turbidity, slow current velocity and in partly shaded streams. This combination of variables seems to be the most favorable in the Vaucheria population establishment in lotic habitats independently of biome. (AU)