Spatial and seasonal variation in niche partitioning between blue manakin (Chiroxiphia caudata) and greenish schiffornis (Schiffornis virescens) in southeastern Brazil

Autor(es)

Hasui, Erica ^[1] ; da Mota Gomes, Veronica Souza ^[1] ; Kiefer, Mara Cintia ^[1] ; Tamashiro, Jorge ^[2] ; Silva, Wesley Rodrigues ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Zool, Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Dept Bot, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Studies on Neotropical Fauna and Environment; v. 44, n. 3, p. 149-159, 2009.
• Citações Web of Science: 8

Resumo

The diet of Chiroxiphia caudata and Schiffornis virescens were studied over three years in four forest sites in the southeastern Atlantic Forest of Brazil. Theory suggests that coexistence of similar species is possible by resource-use differences. To test this, patterns of niche overlap and niche breadth in diet were measured in different seasons and forest sites, based on fruit morphological traits and plant life forms. The results suggest seasonal and spatial variation in resource partitioning. During periods of high fruit availability, there was no evidence of fruit trait selection. In contrast, during periods of fruit scarcity in primary forests, there was evidence of niche partitioning, where C. caudata foraged for larger fruits in canopy and S. virescens searched for understory plants. The niche overlap was higher in secondary forest during periods of scarcity, when both species used small understory fruits. (AU)

• Processo FAPESP: 98/10968-0 - Influência da variação fisionômica da vegetação sobre a composição de aves frugívoras na Mata Atlântica
• Beneficiário: Érica Hasui
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 98/05090-6 - Biodiversidade de interações entre vertebrados frugívoros e plantas da Mata Atlântica do Sudeste do Brasil
• Beneficiário: Wesley Rodrigues Silva
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular