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Physical and biotic integrity in headwaters streams of the Atlantic Forest of Southern São Paulo

Grant number: 09/53056-8
Support type:Regular Research Grants
Duration: February 01, 2010 - January 31, 2012
Field of knowledge:Biological Sciences - Ecology - Ecosystems Ecology
Principal researcher:Mauricio Cetra
Grantee:Mauricio Cetra
Home Institution: Universidade Federal de São Carlos (UFSCAR). Campus de Sorocaba. Sorocaba , SP, Brazil


The "Maciço de Piedade", "Serra de Paranapiacaba", has a high relief and heterogeneous, contributing to formation of many small water courses. This region is a watershed of the basins of rivers Tietê, Paranapanema and Ribeira de Iguape. This encourages a comparative study of fish communities in headwaters with the evaluation of physical and biotic integrity of streams belonging to the three watersheds. We will quantify the degree of deviation of "integrity" in terms of non-natural modifications, identify the main factors of these changes and develop a monitoring protocol that can be used in the region. We will be selected stretches of 100 m in length in several streams that make up 4 sub-basins (Sorocaba, Pirapora, Turvo and Juquiá). The physical integrity in these sections will be evaluated by quantification of some structures in the channel (edge, substrate and flow) and the surrounding (riparian vegetation and plant cover), with the objective of developing an Index of Physical Habitat (IPH). The fish fauna will be sampled in these parts, during dry and rainy seasons of the years 2010 and 2011, using an electric fishing. The biotic integrity will be assessed by the selection of attributes (metrics) of the assemblages of fish that can be used in the adaptation of an Index of Biotic Integrity (IBI). The selection of metrics that will compose the IBI we will be done through multivariate analysis (PCA and CCA) and the use of correlation and concordance indices. Each metric is scored with the values 1, 3 or 5, as it approaches the best conditions observed. The sum of these metrics will compose the IBI. The IBI is validated by comparison with the IPH using the Kendall concordance coefficient. The average values of IBI, according to the four sub-basins will be compared by a one-way ANOVA, while the effects of seasonality and anual persistence with repeated measures ANOVA. The calculation of annual and seasonal variation of the IBI we will use data collected biannually in streams during the years 2010 and 2011. (AU)

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Scientific publications (9)
(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)
TESHIMA, F. A.; MELLO, B. J. G.; FERREIRA, F. C.; CETRA, M.. High beta-diversity maintains regional diversity in Brazilian tropical coastal stream fish assemblages. FISHERIES MANAGEMENT AND ECOLOGY, v. 23, n. 6, p. 531-539, . (09/53056-8)
ALMEIDA, RODRIGO S.; CETRA, MAURICIO. Longitudinal gradient effects on the stream fish metacommunity. NATUREZA & CONSERVAÇÃO, v. 14, n. 2, p. 112-119, . (12/09346-4, 09/53056-8)
PERESSIN, ALEXANDRE; CETRA, MAURICIO. Responses of the ichthyofauna to urbanization in two urban areas in Southeast Brazil. URBAN ECOSYSTEMS, v. 17, n. 3, p. 675-690, . (09/53056-8, 10/13758-0)
CAIO ISOLA DALLEVO DO AMARAL GOMES; ALEXANDRE PERESSIN; MAURICIO CETRA; WALTER BARRELLA. Primeiro registro de um indivíduo adulto de Misgurnus anguillicaudatus, Cantor 1842 do rio Ribeira de Iguape, Brasil. Acta Limnol. Bras., v. 23, n. 3, p. 229-232, . (09/53056-8)
PERESSIN, ALEXANDRE; GONCALVES, CRISTINA DA SILVA; CETRA, MAURICIO. Ichthyofauna diet changes in response to urbanization: the case of upper Paranapanema River basin (Brazil). URBAN ECOSYSTEMS, v. 21, n. 4, p. 795-803, . (10/13758-0, 09/53056-8)
CETRA, M.; PETRERE JUNIOR, M.; BARRELLA, W.. Relative influences of environmental and spatial factors on stream fish assemblages in Brazilian Atlantic rainforest. FISHERIES MANAGEMENT AND ECOLOGY, v. 24, n. 2, p. 139-145, . (09/53056-8)
TESHIMA, FERNANDA A.; FERREIRA, FABIO C.; CETRA, MAURICIO. Rarity status of endemic and vulnerable fish species in a Brazilian Atlantic Forest protected area. NATUREZA & CONSERVAÇÃO, v. 13, n. 1, p. 67-73, . (09/53056-8)
CRUZ, BRUNA B.; MIRANDA, LEANDRO E.; CETRA, MAURICIO. Links between riparian landcover, instream environment and fish assemblages in headwater streams of south-eastern Brazil. ECOLOGY OF FRESHWATER FISH, v. 22, n. 4, p. 607-616, . (09/53056-8)

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