The use of logging gaps by birds of a semideciduous Chiquitano forest in Santa Cruz, Bolivia El uso de claros de aprovechamiento forestal por la avifauna de un bosque semideciduo Chiquitano de Santa Cruz, Bolivia
Flores, B.; Rumiz, D.I.; Fredericksen, T.S.; Fredericksen, N.J.
Hornero. Decembre; 172: 61-69
2002
Document Number: 372507
We carried out a study in a dry or semideciduous Chiquitano forest in the Lomerfo region, one year after it had been selectively logged. We assessed species richness, diversity, relative abundance, and guilds of birds (126 individuals, 32 species) captured with mist nets in logging gaps and in adjacent undisturbed areas. Species richness, diversity, and abundance diminished consistently from large to small gaps and to unlogged sites, although differences between treatments not always were statistically significant. The insectivores Thamnophilus sticturus, Cnemotriccus fuscatus and Thryothorus guarayanus were the most frequent birds in the large gaps, whereas Thamnophilus sticturus, Sittasomus griseicapillus, Thryothorus guarayanus y Basileuterus culicivorus were the most frequent birds in small gaps and unlogged sites. From eight examined guilds, only the abundance of sallying species showed a significantly higher abundance in gaps, while the remaining guilds did not show preferences for any of the treatments. Logging activities after one year apparently did not have a strong impact on the bird communities of this study area. However, qualitative changes in the bird community could be so subtle as to be noticed only after many years.