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Master's Dissertation
DOI
10.11606/D.59.2010.tde-23042010-164216
Document
Author
Full name
Ricardo Cardoso Leite
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2010
Supervisor
Committee
Bispo, Pitágoras da Conceição (President)
Gessner, Alaíde Aparecida Fonseca
Strixino, Susana Trivinho
Title in Portuguese
Distribuição espacial de Chironomidae (Diptera) em riachos da região norte da Serra do Mar, Estado de São Paulo
Keywords in Portuguese
Ação antrópica
distintividade taxonômica
diversidade
diversidade beta
macroinvertebrados aquáticos
Abstract in Portuguese
O presente trabalho teve como objetivo testar se os fatores ambientais cobertura vegetal, estrutura ambiental, vazão e características físicas e químicas da água (pH, oxigênio dissolvido, temperatura da água e condutividade) podem predizer a abundância, a diversidade e a composição de Chironomidae em riachos. As coletas foram realizadas em riachos localizados nos núcleos Santa Virgínia e Cunha-Indaiá, Parque Estadual Serra do Mar, Estado de São Paulo, e suas adjacências, nos meses de outubro de 2006 e outubro e novembro de 2007. Em cada riacho a fauna associada a 25 rochas (com aproximadamente 20 centímetros de diâmetro) foi coletada. Foram coletados 3758 indivíduos distribuídos em 71 táxons. A riqueza estimada para a região, através do método de Jacknife 2, foi de 105 táxons. Os coeficientes parciais estimados a partir da regressão linear múltipla demonstraram que a cobertura vegetal teve influência significativa sobre a abundância e o oxigênio dissolvido sobre a riqueza. Nenhum fator ambiental foi preditivo da composição faunística. Riachos que apresentaram as maiores vazões e os menores escores do RCE apresentaram menores valores para a diversidade beta
Title in English
Spatial distribution of Chironomidae (Diptera) in streams from north of Serra do Mar, São Paulo state
Keywords in English
Anthropic action
aquatic macroinvertebrates
beta diversity
diversity
taxonomic distinctness
Abstract in English
This study aimed to test the effects of vegetation cover, environmental structure, discharge and physical and chemical characteristics (pH, dissolved oxygen, water temperature and conductivity) on the abundance, diversity and composition of Chironomidae fauna in streams. The sampling was done in streams from Parque Estadual da Serra do Mar (Núcleos Santa Virgínia e Cunha-Indaiá) and neighborhoods, in October 2006, and October and November 2007. In each stream, the individuals of Chironomidae associated to 25 individual stones were sampled. The total of 3758 individuals in 71 taxa was collected. The richness, estimated by Jacknife 2, to the streams of the studied region was 105 taxa. The partial coefficients estimated by multiple linear regression showed that canopy cover was related to the abundance and the dissolved oxygen to the richness. No environmental factor was predictive of faunistic composition. Larger size and lower RCE scores streams presented lower beta diversity.
 
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Publishing Date
2010-07-08
 
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