Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/11113
Tipo do documento: Artigo
Título: Experimental assessment of the effects of environmental factors and longitudinal position on alpha and beta diversities of aquatic insects in a neotropical stream
Autor: Hepp, Luiz U.
Landeiro, Victor L.
Melo, Adriano Sanches
Abstract: We evaluated the effect of environmental factors on the abundance and genera richness of aquatic insects colonizing artificial substrates. We also assessed the relative effects of environmental factors on assemblage variation (beta diversity), and contrasted its magnitude with the variation associated with the spatial position of reaches in a Neotropical stream. Homogeneous and heterogeneous bricks were installed in seven stream reaches and removed after 60d. Substrate type and organic matter showed significant effects on abundance. For observed richness, substrate type was the only important variable. For rarefied richness, no explanatory variable was important. A NMDS ordination of bricks revealed the effect of spatial position and substrate type. A partial Redundancy Analysis (pRDA) indicated that the environmental matrix explained 12.44% of the total variation, while reach position explained 7.41%. We conclude that at local scale (reaches 430–920 m apart), environmental factors, especially substrate heterogeneity, were important in determining the alpha and beta diversities of the insect assemblage in the stream.
Palavras-chave: Substrate heterogeneity
Partial redundancy analysis
Ephemeroptera
Plecoptera
Trichoptera
País: brasil
Programa: Programa de Pós-Graduação em Ecologia e Evolução
Citação: HEPP, Luiz U.; LANDEIRO, Victor L.; MELO, Adriano S. Experimental assessment of the effects of environmental factors and longitudinal position on alpha and beta diversities of aquatic insects in a neotropical stream. International Review of Hydrobiology, v. 97,n. 2, p. 157-167, May 2012. Disponível em: <http://onlinelibrary.wiley.com/doi/10.1002/iroh.201111405/epdf>.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1002/iroh.201111405
Identificador do documento: 10.1002/iroh.201111405
URI: http://onlinelibrary.wiley.com/doi/10.1002/iroh.201111405/epdf
http://repositorio.bc.ufg.br/handle/ri/11113
Data de publicação: 26-Abr-2012
Aparece nas coleções:ICB - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Experimental assessment of the effects of environmental factors - 2012.pdfArtigo - Adriano Sanches Melo - 2012304,38 kBAdobe PDFThumbnail
Baixar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.