Efeitos da coloração e da distribuição de frutos artificiais nas taxas de consumo por aves em um fragmento florestal
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Data
2013-12
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Resumo
Frugivory is one of the most important ecological interactions during forest
succession. Frugivorous birds are responsible for up to 90% of seed dispersion in
tropical forests. Previous studies have tested how birds choose fruits to disperse
based on their color, size, and position. However, most of those studies were
conducted in artificial conditions. This study investigated whether the rate of
fruit consumption by birds is influenced by their colors and spatial patterns in
forested environments. The experiment was performed in a 60.98-ha-fragment
of Semideciduos Forest. We used artificial fruits with three different colors,
disposed in a both clump and scattered fashion, at the edge and interior of the
fragment. There was a higher rate of consumption of conspicuous fruits (blue
and red). Scattered fruits were also more consumed than clump fruits on forest
interior. The contrast of conspicuous colors against their backgrounds allows the
visualization of fruits by frugivorous birds specialized on interior environments.
Our results also showed that opportunists frugivorous are the main consumers
of scattered fruits. This pattern supported the assumption that peaks of high
fruit productivity coincide with higher consumption of this resource by these
birds.
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Palavras-chave
Floresta estacional semidecidual, Frugivoria, Frutos artificiais, Ornitocoria, Seasonal semidecidual forest, Frugivory, Artificial fruits, Ornithochory
Citação
AGUIAR, Albert Gallon de; BISPO, Arthur Ângelo. Efeitos da coloração e da distribuição de frutos artificiais nas taxas de consumo por aves em um fragmento florestal. Bioikos, Campinas, v. 27, n. 2, p. 57-65, jul./dez. 2013.