Associação de aves a agrupamentos de bambu na porção Sul da Mata Atlântica, Londrina, Estado do Paraná, Brasil

Abstract

Association of birds to bamboo stands in southern brazilian Atlantic Forest, Londrina, Parana State, Brazil. Bamboo stands have been considered relatively important for a high number of bird species, specially in Amazonia. In the present study variations on the abundance of bamboo associated birds were evaluated in areas with different availability of bamboo Chusquea sp. present inside native forest in the southern portion of the Atlantic Forest, Parana State. Point counts were performed during 25 days in five transects, three in bamboo stands areas and two where this microhabitat was absent; the transects differ in the availability of bamboo. The study areas were the Mata dos Godoy State Park and an adjacent forest fragment, which together sum a total area larger than 2,000 ha, in northern Parana State, southern Brazil. Nineteen bird species were analyzed and only five of them were recorded in the transects where the bamboo was absent. Five bird species decreased significantly their abundances according the decreasing in the availability of bamboo (G-test, P < 0.01). None species had higher abundance in the transects where the bamboo was absent. Differently of Amazonia, bamboo stands in the southern portion of the Brazilian Atlantic forest are not extensive areas; actually, this type of microhabitat is more disperse throughout the understory. Even so, this microhabitat may be important for conservation of certain bird species in the Atlantic forest. Resumo: Agrupamentos de bambu têm sido considerados relativamente importantes para um grande número de espécies de aves, principalmente na Amazônia. No presente estudo avaliamos as variações na abundância de aves associadas ao bambu Chusquea sp. em áreas com diferentes disponibilidades deste microhábitat no interior de floresta nativa, na porção sul da Mata Atlântica, Estado do Paraná. Amostragens por ponto-de-escuta foram realizadas durante 25 dias em cinco trilhas, três em áreas com agrupamentos de bambu e duas em áreas onde este microhábitat estava ausente; as trilhas diferiram na disponibilidade de bambu. As áreas de estudos foram o Parque Estadual Mata dos Godoy e um fragmento florestal adjacente que, juntos, formam uma área maior que 2.000 ha no Norte do Estado do Paraná, Sul do Brasil. Das dezenove espécies de aves analisadas, apenas cinco foram registradas nas trilhas onde não havia bambu. Cinco espécies diminuíram significativamente suas abundâncias de acordo com a disponibilidade decrescente de aglomerados de bambu (teste-G, P < 0,01). Nenhuma espécie de ave apresentou maior abundância nas trilhas onde o bambu estava ausente. Diferente da Amazônia, agrupamentos de bambu na porção sul da Mata Atlântica brasileira não formam áreas extensas, sendo encontrados mais esparsos pelo sub-bosque. Ainda assim, este microhábitat pode ser importante para a conservação de certas espécies de aves na Mata Atlântica. Palavras-chave: aves, bambu, Chusquea, Mata Atlântica.

Occupancy of different types of forest habitats by tyrant flycatchers (Passeriformes: Tyrannidae)

“…It was confirmed the importance of bamboo clusters to Hemitriccus diops, Hemitriccus obsoletus (Miranda-Ribeiro, 1906), Hemitriccus nidipendulus (Wied, 1831), Platyrhynchus mystaceus Vieillot, 1818, Poecilotriccus plumbeiceps and Myiornis auricularis (Vieillot, 1818), species that are known to show various levels of specialization to this microhabitat (Santana & Anjos 2010).…”

Foraging Behavior of Kaempfer's Woodpecker (Celeus obrieni), a Bamboo Specialist

“…In Brazil, several birds specialize in bamboo in the Atlantic rainforest, where bamboo stands cover relatively small areas (Rodrigues et al 1994, Vasconcelos et al 2005, Areta 2007, Santana and Anjos 2010, and in the Amazon rainforest, where bamboo stands can cover extensive areas (Parker 1982, Pierpont and Fitzpatrick 1983, Parker and Remsen 1987, Fitzpatrick and Willard 1990, Kratter 1997, Kratter and Parker 1997. However, few bamboo specialists occur in the cerrado: the Blackish-blue Seedeater (Amaurospiza moesta) (Lopes et al 2011) and the Kaempfer's Woodpecker (Celeus obrieni) (Short 1973).…”

Bird community in an Araucaria forest fragment in relation to changes in the surrounding landscape in Southern Brazil

“…Therefore, the rise in disturbed fragments that are colonized by bamboo increases the probability of occurrence of bamboo specialists. Santana & anjoS (2010) studied the effect of bamboo species (Chusquea sp.) and observed that richness and abundance increased significantly in areas dominated by bamboo and the most common species were Drymophila rubricollis, Conopophaga lineata, Hylopezus nattereri, Synallaxis cinerascens, and Hemitriccus diops.…”