Spatial variations at different observational scales and the seasonal distributions of stream macroalgae in a Brazilian subtropical region

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Autor(es): dc.contributorDepartamento de Biologia-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal da Integração Latino-Americana-
Autor(es): dc.creatorKrupek, Rogério Antonio-
Autor(es): dc.creatorBranco, Ciro Cesar Zanini-
Autor(es): dc.creatorPeres, Cleto Kaveski-
Data de aceite: dc.date.accessioned2025-08-21T20:23:03Z-
Data de disponibilização: dc.date.available2025-08-21T20:23:03Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2012-11-23-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/227045-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/227045-
Descrição: dc.descriptionWe examined the relationships between environmental variations in lotic ecosystems with the seasonal dynamics of macroalgae communities at different spatial scales: drainage basin of two rivers (Rio das Pedras and Rio Marrecas), shading (open and shaded stream segments), mesohabitat (riffles and pools), and microhabitats. Data collections were made on a monthly basis between January and December/2007. A total of 16 taxa were encountered (13 species and 3 vegetative groups). All of the biotic parameters (richness, abundance, diversity, equitability, and dominance) were found to be highly variable at all of the spatial scales evaluated. On the other hand, abiotic variables demonstrated differences only at mesohabitat (in terms of current velocity) and shaded habitat (in terms of irradiance) scales. The seasonality of the macroalgae community structure was strongly influenced by microhabitat variables (current velocity, substrate H', and irradiance), demonstrating their importance over time and at different scales. Regional variables (temperature, oxygen saturation, specific conductance, pH, and turbidity) were found to have little influence on the temporal dynamics of the macroalgae communities evaluated.-
Descrição: dc.descriptionUniversidade Estadual do Paraná Departamento de Biologia Campus de União da Vitória, Praça Cel. Amazonas, Caixa Postal 291, 84600-000 União da Vitória, PR-
Descrição: dc.descriptionUniversidade Estadual Paulista Departamento de Ciências Biológicas, Av. Dom Antônio, 2100, 19806-900 Assis, SP-
Descrição: dc.descriptionUniversidade Federal da Integração Latino-Americana, Av. Tancredo Neves, 6731, Parque Tecnológico Itaipu, 85867-970 Foz do Iguaçu, PR-
Descrição: dc.descriptionUniversidade Estadual Paulista Departamento de Ciências Biológicas, Av. Dom Antônio, 2100, 19806-900 Assis, SP-
Formato: dc.format249-257-
Idioma: dc.languageen-
Relação: dc.relationRevista Brasileira de Botanica-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHeterogeneity-
Palavras-chave: dc.subjectMacroalgae-
Palavras-chave: dc.subjectSeasonal variations-
Palavras-chave: dc.subjectStream-
Título: dc.titleSpatial variations at different observational scales and the seasonal distributions of stream macroalgae in a Brazilian subtropical region-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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