Experimental assessment of the effects of environmental factors and longitudinal position on alpha and beta diversities of aquatic insects in a neotropical stream

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dc.creatorHepp, Luiz U.
dc.creatorLandeiro, Victor L.
dc.creatorMelo, Adriano Sanches
dc.date.accessioned2015-10-08T20:50:51Z
dc.date.available2015-10-08T20:50:51Z
dc.date.issued2012-04-26
dc.descriptionv. 97,n. 2, p. 157-167, mai., 2012.pt_BR
dc.description.abstractWe 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.pt_BR
dc.identifier.citationHEPP, 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>.pt_BR
dc.identifier.doi10.1002/iroh.201111405
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1002/iroh.201111405/epdf
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/11113
dc.language.isoengpt_BR
dc.publisher.countrybrasilpt_BR
dc.publisher.programPrograma de Pós-Graduação em Ecologia e Evoluçãopt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectSubstrate heterogeneitypt_BR
dc.subjectPartial redundancy analysispt_BR
dc.subjectEphemeropterapt_BR
dc.subjectPlecopterapt_BR
dc.subjectTrichopterapt_BR
dc.titleExperimental assessment of the effects of environmental factors and longitudinal position on alpha and beta diversities of aquatic insects in a neotropical streampt_BR
dc.typeArtigopt_BR

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