| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Fed Sao Carlos, Ctr Ciencias Biol & Saude, Programa Posgrad Ecol & Recursos Nat, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | IHERINGIA SERIE ZOOLOGIA; v. 102, n. 4, p. 448-452, DEC 30 2012. |
| Web of Science Citations: | 0 |
| Abstract | |
In the Cerrado vegetation, where the seasonal is well defined, rainfall has an important role in controlling the flow of streams and consequently on the structure of macroinvertebrates community. Despite the effects of rainfall associated with seasonality are well studied, little is known about the effects of stochastic rains on the community. In the present study we evaluated the structure and faunal composition of four first-order streams in Central Brazil during the dry season in two years, with and without stochastic rains. Community sampling was done by colonization of boards of high density polyethylene (HDPE), removed after one month submerged in streams. Analysis of Variance (ANOVA) performed indicated no difference in rarefied richness between the two periods, different from numeric density of organisms that was higher in the period without disturbance; moreover, the Detrended Correspondence Analysis (DCA) revealed differences in faunal composition between the two periods. Our results indicate that stochastic rainfall is an important factor in structuring the macroinvertebrates community in studied region. (AU) | |
| FAPESP's process: | 11/15077-3 - Characterization of macroinvertebrates fauna in Cerrado low order streams in São Paulo state |
| Grantee: | Victor Satoru Saito |
| Support Opportunities: | Scholarships in Brazil - Master |