2013-08-212013-08-212001KALIF, Kemel Amim Bittencourt. Impactos da exploração madeireira sobre a fauna de formigas e conseqüências para a remoção de sementes florestais na Amazônia Oriental. 2001. 62 f. Dissertação (Mestrado) - Universidade Federal do Pará, Museu Paraense Emílio Goeldi, Belém, 2001. Programa de Pós-Graduação em Zoologia.https://repositorio.ufpa.br/handle/2011/4155Logging in the Amazon Forest affects approximately 1.5 million hectares of forestlands each year. These activities result in forest structural and microclimatic changes that could potentially affect diversity and animal species composition. Regeneration of these areas could be jeopardized since animals disperse most seeds. On the other hand, it is possible not to affect seed dispersal mechanisms by maintaining forest fauna integrity through the implementation of reduced impact logging techniques. By using ants as an ecologically representative animal group and integrated into the regeneration processes through dispersion and predation, this work evaluated; (1) if logging affects fauna (diversity and species composition), (2) if reduced impact logging techniques are capable of preserving it, and (3) if logging affects ants ecological efficiency in seed removal (dispersion and predation). Logging effects on ants' diversity and species composition, as well as seed removal done by these insects, were studied in three different forest areas in the municipality of Paragominas in the state of Pará. The first area was a forest that went through high impact logging (FC), the second a forest affected by reduced impact logging techniques (FB), and the third one a primary forest used as the control group (FP). Ants’ were sampled four times during 1998 using the Winkler method at four transects per area. The seed removal experiment was conducted by distributing seeds of six wood species through twelve points in each area. During the experiment the daily number of ants and other arthropods that visited the seed points was quantified. The amount of seeds removed was counted at the end of the experiment. Diversity and abundance of ant species were not affected by logging activities. However, species composition changed by 36% in FB and by 37% in FC. The Pheidole genus experienced richness and abundance reduction only in FC. Seed removal was also significantly lower (-33%) in FC compared to the ones registered in FB and FP. Ants represented 92% of all arthropods that visited the seed points in the three forest areas. The bigger seeds were the most removed ones, independently of its seed disperser adaptations and of the studied forest area. The results obtained suggest that forest logging can affect ant species composition, without affecting its diversity (except that of Pheidole). Reduced impact logging techniques have the capacity of preserving Pheidole species diversity, which guarantees seed movements similar to those of a primary forest. Nevertheless, conventional logging can reduce, both the number of species and occurrences of this genus, thus resulting in a reduced number of removed seeds. Such reduction probably jeopardizes forest regeneration after wood extraction.porAcesso AbertoInsetosFormiga (Animal)PheidoleEspécie (Zoologia)Composição faunísticaDiversidadeMadeiraDispersão de sementesFazenda Cauaxi - PAParagominas - PAPará - EstadoAmazônia brasileiraImpactos da exploração madeireira sobre a fauna de formigas e conseqüências para a remoção de sementes florestais na Amazônia OrientalDissertaçãoCNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA::ZOOLOGIA APLICADA