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Structural variation of stream freshwater fishes metacommunity from Atlantic forest

Grant number: 12/19723-0
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): January 01, 2013
Effective date (End): June 30, 2015
Field of knowledge:Biological Sciences - Ecology - Applied Ecology
Principal Investigator:Lilian Casatti
Grantee:Cristina da Silva Gonçalves
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
Associated scholarship(s):13/20794-1 - Structural variation of stream freshwater fishes metacommunity from Atlantic Forest, BE.EP.PD


Several factors influence stream ichthyofauna structure (e.g. habitat heterogeneity, spatial scale and dispersal) and the metacommunity framework can help to understand the mechanisms and process which regulates spatial organization of species, as this concept is focused on interaction linking dispersal and community dynamics within and between local and regional scales. The aim of this study is to determine how much of the environmental and spatial variables (local and regional factors, respectively) explain the variation of fish community structure from Juréia-Itatins reserve, considering the metacommunity theory. In a previous study at this site, it was found that the habitat structure (i.e. depth, flow, and bottom type) can influence the diversity of fish species, but there was evidence that the altitudinal gradient and the isolation between the streams are spatial factors that may also be responsible for the organization of this ichthyofauna. Eighteen sites distributed in upper, middle and lower stream stretches were selected. Ichthyofauna was sampled using electrofishing and it is represented by 19 species. Multivariate statistical analyses will be conducted to evaluate species abundance at each site considering environmental variables (stream width, depth, flow, and bottom type, pH, conductivity, dissolved oxygen and water temperature), and spatial variables (geographic and longitudinal position, isolation degree, channel order, and preservation status of riparian vegetation).

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GONCALVES, CRISTINA DA SILVA; CESTARI, CESAR. Grazing of the lambari fish Deuterodon iguape is associated with mouth morphology. ZOOLOGISCHER ANZEIGER, v. 274, p. 127-130, . (12/19723-0, 13/20794-1, 12/20593-3)
GONCALVES, CRISTINA DA SILVA; DE SOUZA BRAGA, FRANCISCO MANOEL; CASATTI, LILIAN. Trophic structure of coastal freshwater stream fishes from an Atlantic rainforest: evidence of the importance of protected and forest-covered areas to fish diet. ENVIRONMENTAL BIOLOGY OF FISHES, v. 101, n. 6, p. 933-948, . (12/19723-0)
CRISTINA DA SILVA GONÇALVES; FERNANDO ROGÉRIO CARVALHO; MARÍA ANGÉLICA PÉREZ-MAYORGA; ISADORA FRANCESCONI DE OLIVEIRA. Chave de identificação para os peixes de riachos costeiros da Mata Atlântica, sudeste do Brasil. Biota Neotropica, v. 17, n. 4, . (12/19723-0)
GONCALVES, CRISTINA DA SILVA; HOLT, ROBERT DAN; CHRISTMAN, MARY C.; CASATTI, LILIAN. Environmental and spatial effects on coastal stream fishes in the Atlantic rain forest. Biotropica, v. 52, n. 1, p. 139-150, . (12/19723-0, 13/20794-1)

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