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Frugivory and seed dispersal by birds in an altitudinal Atlantic Forest

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									Frugivory and seed dispersal by birds in an altitudinal Atlantic
Forest, Teresopolis-Brazil
A. C. Rudge, A. Piratelli, F. M. Pina-Rodrigues;
Universidade Federal Rural do Rio de Janeiro, Seropedica, Brazil.

Effective seed dispersal is critical to restoration of degraded areas and to
successful recruitment in fragmented forests. We investigated seed dispersal by
birds in and among four fragments of different sizes and degrees of isolation by
agricultural activities Fragments isolated (F3= 3.2 ha; F4= 62 ha) and connected
(F2 = 8 ha; F1= 23 ha) were studied by mist-netting in two sites per fragment. Bird
captures were performed; seeds were collected from feces and germination was
carried out in controlled chambers at 30oC. Frugivores birds were more abundant
(38.3%; n= 31), followed by omnivores and insectivores. Seeds of Miconia and
Lendra sp. were the most frequent and were dispersed by Chiroxiphia caudata and
Thraupis sayaca that promoted increasing of seed germination while Hemitriccus
diops and Turdus leucomelas were not effective in breaking seed dormancy.
(Blumen Project supported by CNPq and BMBF-Germany Agreement-
http://www.tt.fh-koeln.de/blumen )

								
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