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Landscape changes in medium term: consequences for the composition, trophic structure and functional diversity of fish fauna in tropical streams.

Grant number: 12/20280-5
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2013
Effective date (End): February 28, 2017
Field of knowledge:Biological Sciences - Zoology - Applied Zoology
Principal researcher:Lilian Casatti
Grantee:Jaquelini de Oliveira Zeni
Home 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):15/04366-5 - Time and land-use change in an agricultural landscape: are there consequences to the functional diversity of tropical stream fish in a decade?, BE.EP.DR


The successive changes in land-use over the years have potential to affect aquatic organisms. The aim of this project is assess if, and how, the landscape changes in medium term (one decade) can affect the stream fishes in multiple aspects, like community structure, trophic structure and functional diversity. For this, we'll be at least 30 streams with change in land-use (grasslands to sugar cane) and 10 control streams, where the land-use remained unchanged. All these streams were sampled in 2003-2004 at Northwest state of São Paulo and will be resampled in 2013, following the same methodology: two electrofishing passes with stationary generator of alternate current (220 V, 50-60 Hz, 3.4-4.1 A, 1000 W) in stretches of 75m in each stream. The 2003-2004 samples will be compared with 2013 as for: (i) composition, richness and diversity of stream fishes; (ii) trophic structure (trophic guilds identification); and, (iii) functional diversity based in trophic and ecomorphological traits (similarity dendrograms and MPD "mean pairwise distance" and MNTD "mean nearest taxon distance"). In addition, landscape analysis for watersheds in 2003-2004 and 2013 will be conducted with help of software ArcGis 9, ArcMap 9.2 version. To assess if, there is a correlation of biotic and abiotic streams variables with the landscape metrics and indices, which are explanatory variables, will be build a multiple regression model, to identify possible changes in land-use and the consequences for the stream fishes. Thus, the results will be useful the development of conservation, management and restoration action for river and stream ecosystems, especially in highly disturbed areas by agriculture.

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Scientific publications (6)
(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)
ZENI, JAQUELINI O.; HOEINGHAUS, DAVID J.; CASATTI, LILIAN. Effects of pasture conversion to sugarcane for biofuel production on stream fish assemblages in tropical agroecosystems. Freshwater Biology, v. 62, n. 12, p. 2026-2038, . (12/20280-5, 15/04366-5)
ROA-FUENTES, CAMILO A.; HEINO, JANI; CIANCIARUSO, MARCUS V.; FERRAZ, SILVIO; ZENI, JAQUELINI O.; CASATTI, LILIAN. Taxonomic, functional, and phylogenetic beta-diversity patterns of stream fish assemblages in tropical agroecosystems. Freshwater Biology, v. 64, n. 3, p. 447-460, . (12/05983-0, 12/20280-5)
FERREIRA, CRISTIANE DE PAULA; CASATTI, LILIAN; ZENI, JAQUELINI O.; CENEVIVA-BASTOS, MONICA. Edge-mediated effects of forest fragments on the trophic structure of stream fish. Hydrobiologia, v. 762, n. 1, p. 15-28, . (04/04820-3, 12/20280-5, 11/11641-1)
MOLINA, MARIANA C.; ROA-FUENTES, CAMILO A.; ZENI, JAQUELINI O.; CASATTI, LILIAN. The effects of land use at different spatial scales on instream features in agricultural streams. LIMNOLOGICA, v. 65, p. 14-21, . (12/05983-0, 12/20280-5)
COMTE, LISE; CARVAJAL-QUINTERO, JUAN; TEDESCO, PABLO A.; GIAM, XINGLI; BROSE, ULRICH; EROS, TIBOR; FILIPE, ANA F.; FORTIN, MARIE-JOSEE; IRVING, KATIE; JACQUET, CLAIRE; et al. RivFishTIME: A global database of fish time-series to study global change ecology in riverine systems. GLOBAL ECOLOGY AND BIOGEOGRAPHY, v. 30, n. 1, . (01/13340-7, 12/20280-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ZENI, Jaquelini de Oliveira. A decade later: the effects of land use changes in biodiversity patterns of stream fish assemblages from a tropical agroecosystem. 2017. Doctoral Thesis - Universidade Estadual Paulista (UNESP). Instituto de Biociências Letras e Ciências Exatas. São José do Rio Preto São José do Rio Preto.

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