Ecological distribution of stream macroalgae in different spatial scales using taxonomic and morphological groups

dc.contributor.authorKrupek, Rogério Antonio
dc.contributor.authorBranco, Ciro Cesar Zanini [UNESP]
dc.contributor.institutionDepartamento de Biologia
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-29T06:01:25Z
dc.date.available2022-04-29T06:01:25Z
dc.date.issued2012-01-01
dc.description.abstractWe examined the ecological distribution of macroalgal communities in streams using species groups (taxonomic units = algal phyla, and morphological = morphological types) with similar structures and functions instead of the species themselves. The study was conducted from June to July/2007 in two drainage basins located in mid-southern region of Paraná State, Brazil. Evaluations of macroalgal communities took into consideration the following spatial scales: the drainage basin (the Pedras river and Marrecas river basins), shading regime (open and shaded stream segments), mesohabitats (riffles and pools), and microhabitats (sampling units of 0.05 m2). A total of 29 taxa (23 subgeneric, one generic, and five vegetative groups) were identified. On these, 12 taxa belong to Chlorophyta, 11 to Cyanobacteria, four to Heterokontophyta, and two to Rhodophyta. The proportions of morphological types were: 24% free filaments, 17.25% mats, tufts, gelatinous colonies, and gelatinous filaments, 7% crusts. In terms of spatial scales, we observed a predominance of Chlorophyta in open stream segments and Cyanobacteria in shaded stream segments, reflecting the loss of competitive advantage of green algae in sites with low energy availability. In the mesohabitats, the morphological types recorded in pools were predominantly poorly adapted to fast currents (free filaments), while those found in riffles (mats, tufts and gelatinous filaments) were highly resistant to fast water flows. As such, the use of species groupings based on algal taxonomy associated with morphological characteristics proved to be useful to understanding the distributions of these organisms in lotic environments.en
dc.description.affiliationUniversidade Estadual do Paraná Departamento de Biologia Campus de União da Vitória, Praça Cel. Amazonas s/n, Caixa Postal 291, 84600-000 União da Vitória, PR
dc.description.affiliationUniversidade Estadual Paulista Departamento de Ciências Biológicas, Av. Dom Antônio, 2100, 19806-900 Assis, SP
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Ciências Biológicas, Av. Dom Antônio, 2100, 19806-900 Assis, SP
dc.format.extent273-280
dc.identifierhttp://dx.doi.org/10.1590/s1806-99592012000300006
dc.identifier.citationRevista Brasileira de Botanica, v. 35, n. 3, p. 273-280, 2012.
dc.identifier.doi10.1590/s1806-99592012000300006
dc.identifier.issn0100-8404
dc.identifier.scopus2-s2.0-84869211137
dc.identifier.urihttp://hdl.handle.net/11449/227042
dc.language.isoeng
dc.relation.ispartofRevista Brasileira de Botanica
dc.sourceScopus
dc.subjectDistribution
dc.subjectFunctional group
dc.subjectMacroalgae
dc.subjectStream
dc.titleEcological distribution of stream macroalgae in different spatial scales using taxonomic and morphological groupsen
dc.typeArtigo
unesp.departmentCiências Biológicas - FCLASpt

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