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Heterogeneity of bird communities in a mosaic of habitats on a restinga ecosystem in southeast Brazil 103
Gomes,Verônica S. da M.; Vecchi,Maurício B.; Loiselle,Bette A.; Missagia,Caio C.C.; Alves,Maria Alice S..
ABSTRACT Restinga occurs as a narrow band of coastal habitats throughout the Atlantic Forest, although it presents considerable variation in vegetation structure, which likely contributes to heterogeneity in species inhabiting this endangered ecosystem. The goal of this study is to examine how variation in vegetation and abiotic conditions in the restinga ecosystem may contribute to heterogeneity of bird communities in Restinga de Jurubatiba, Brazil. Temperature, relative humidity, and vegetation structure were sampled to characterize four sites (dry forest, flooded forest, open scrub and closed scrub). Birds were sampled using observations, mist-netting and voice recordings. Results indicate that major differences of all variables occur between forest and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avian community; NDVI; Restinga forest; Scrub; Vegetation structure.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000500600
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The rate of visitation by Amazilia fimbriata (Apodiformes: Trochilidae) influences seed production in Tillandsia stricta (Bromeliaceae) 103
Missagia,Caio C.C.; Alves,Maria Alice S..
Legitimate flowers visitors pollinate the flower during the visit and thus influence the production of fruits and seeds. We tested whether the visitation rate of potential pollinators is associated with the amount of seeds per fruit produced by the self-compatible bromeliad Tillandsia stricta (Bromeliaceae). We determined whether hummingbirds are legitimate visitors by testing for a correlation between visits and pollination (seed production) at the Guapiaçú Ecological Reserve (Reserva Ecológica de Guapiaçú), state of Rio de Janeiro. We tested 30 flowers, five of which were also monitored to test the possibility of spontaneous self-pollination. The remaining 25 flowers were exposed to floral visitors. Twenty-two flowers formed fruits and seeds, from which...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Atlantic forest; Hummingbird; Pollination; Self-compatibility.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000300260
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