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| Soares,Juliane A. C.; Batista-Silva,Valéria F.; Boneto,Daiane D.; Bailly,Dayani; Abelha,Milza C. F.; Oliveira,Iana A. D. V. de. |
| ABSTRACT This study investigated the assemblages attributes (composition, abundance, richness, diversity and evenness) and the most representative genera of Odonata, Anisoptera at Água Boa and Perobão Streams, Iguatemi River basin, Brazil. Both are first order streams with similar length that are impacted by riparian forest removal and silting. Quarterly samplings were conducted from March to December 2008 in the upper, intermediate and lower stretch of each stream. The Mantel test was used to check the influence of spatial autocorrelation on the Odonata composition. Spatial variations in the composition were summarized by the Principal Coordinates Analysis (PCoA) using Mantel test residuals. The effects of spatial correlation on richness and abundance... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquatic invertebrates; Iguatemi River basin; Lotic environments; Odonatofauna. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000300325 |
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| Pini,Suelen F. R.; Abelha,Milza C. F.; Kashiwaqui,Elaine A. L.; Delariva,Rosilene L.; Makrakis,Sergio; Makrakis,Maristela C.. |
| ABSTRACT Resource partitioning allows for interspecific coexistence and is frequently reported for similar species. Here, we predicted the existence of resource partitioning among species of Astyanax that co-occur in the Low Iguaçu River and tributaries in Brazil. A total of 848 stomachs of five species of Astyanax were analyzed. Algae, terrestrial plant and fruit/seed were the most consumed resources. Astyanax bifasciatus and A. dissimilis had predominantly herbivorous diets, A. gymnodontus and A. lacustris were omnivorous, and A. minor was mainly algivorous. Permutational analysis of variance showed the species had different diets, and similarity percentage analysis indicated that fruit/seed and terrestrial plant contributed the most to this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coexistence; Congeneric species; Diet; Diet overlap; Niche theory. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500203 |
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