We used mark and recapture techniques to evaluate movements of bats within and between three braz... more We used mark and recapture techniques to evaluate movements of bats within and between three brazilian forest remnants. We captured bats with mist-nets in four 1 ha plots representing different degrees of isolation of riparian (two plots) and submontane (two plots) forests between July 2002 and June 2003. Using numbered aluminium tags, we marked 635 bats of seven species and 54 individuals of six species were recaptured. Overall, we recaptured Carollia perspicillata (Linnaeus, 1758) (short-tailed fruit bat) most frequently, especially in plots where they were banded in the riparian forest plots. These results suggest that this bat has restricted feeding areas, which are probably determined by the abundance of Piper Linnaeus (Piperaceae), its preferred food item. In contrast, species of the genus Artibeus Leach, 1821 exhibited few recaptures, suggesting high mobility and larger feeding areas. In fact Artibeus seems to use more of the forest remnants in their search for food, especially Ficus Linnaeus (Moraceae), the preferred food of this bat. Our results suggest that even small forest isolates are valuable for the maintenance of some bat species because they offer many of the resources they need or because they are spatially distributed in a pattern that allows use of the entire landscape.
... e informações de alguns zoológicos e centros de reabilitação, consulta de literatura e ... ao... more ... e informações de alguns zoológicos e centros de reabilitação, consulta de literatura e ... ao manejo, alimentação, ambientação dos recintos e enriquecimento, buscando sempre reproduzir as ... As planilhas alimentares deverão ser elaboradas por biólogos que conheçam a dieta ...
Abstract During the colonisation of the South of Brazil, logging of tree species with high econom... more Abstract During the colonisation of the South of Brazil, logging of tree species with high economic value was one of the main economic activities. In this process, almost all Araucaria Forest, one of the forest types of the Atlantic Forest that once covered most of this region, was severely fragmented and disturbed. One of the consequences of this disturbance was the population growth of a native bamboo species (Merostachys skvortzovii) that came out of the small patches where it occurred naturally, to dominate the understory of forest fragments. In this study, we evaluated if the fragment size, forest-edge effect, and abundance of bamboos affect forest structure and functional guilds in a region of Araucaria Forest in Parana state, Brazil. We sampled trees (DBH ≥ 4.8 cm) in five fragments (24–270 ha) in two plots (2000 m2 each) located at the edge and centre of each one. We analysed the forest structure (species composition and species richness, abundance, and basal area) and estimated the bamboo cover in each plot. We recorded 1743 individuals of 68 tree species in the five analysed patches. The fragments were very similar in floristic composition and structure (species richness, abundance, basal area). The bamboo cover was the main factor affecting forest structure and species guilds distribution, followed by distance from the fragment edge. These results show a simplification of floristic, structural, and functional attributes of Araucaria Forest remnants suggesting that the selective logging followed by fragmentation and native bamboo overabundance are important factors in the imporishment of this endangered biome.
ABSTRACT This paper covers general aspects of the biology, physiology, management, breeding, medi... more ABSTRACT This paper covers general aspects of the biology, physiology, management, breeding, medicine and diseases of the order Piciformes (toucans, toucanets and woodpeckers).
We used mark and recapture techniques to evaluate movements of bats within and between three braz... more We used mark and recapture techniques to evaluate movements of bats within and between three brazilian forest remnants. We captured bats with mist-nets in four 1 ha plots representing different degrees of isolation of riparian (two plots) and submontane (two plots) forests between July 2002 and June 2003. Using numbered aluminium tags, we marked 635 bats of seven species and 54 individuals of six species were recaptured. Overall, we recaptured Carollia perspicillata (Linnaeus, 1758) (short-tailed fruit bat) most frequently, especially in plots where they were banded in the riparian forest plots. These results suggest that this bat has restricted feeding areas, which are probably determined by the abundance of Piper Linnaeus (Piperaceae), its preferred food item. In contrast, species of the genus Artibeus Leach, 1821 exhibited few recaptures, suggesting high mobility and larger feeding areas. In fact Artibeus seems to use more of the forest remnants in their search for food, especially Ficus Linnaeus (Moraceae), the preferred food of this bat. Our results suggest that even small forest isolates are valuable for the maintenance of some bat species because they offer many of the resources they need or because they are spatially distributed in a pattern that allows use of the entire landscape.
... e informações de alguns zoológicos e centros de reabilitação, consulta de literatura e ... ao... more ... e informações de alguns zoológicos e centros de reabilitação, consulta de literatura e ... ao manejo, alimentação, ambientação dos recintos e enriquecimento, buscando sempre reproduzir as ... As planilhas alimentares deverão ser elaboradas por biólogos que conheçam a dieta ...
Abstract During the colonisation of the South of Brazil, logging of tree species with high econom... more Abstract During the colonisation of the South of Brazil, logging of tree species with high economic value was one of the main economic activities. In this process, almost all Araucaria Forest, one of the forest types of the Atlantic Forest that once covered most of this region, was severely fragmented and disturbed. One of the consequences of this disturbance was the population growth of a native bamboo species (Merostachys skvortzovii) that came out of the small patches where it occurred naturally, to dominate the understory of forest fragments. In this study, we evaluated if the fragment size, forest-edge effect, and abundance of bamboos affect forest structure and functional guilds in a region of Araucaria Forest in Parana state, Brazil. We sampled trees (DBH ≥ 4.8 cm) in five fragments (24–270 ha) in two plots (2000 m2 each) located at the edge and centre of each one. We analysed the forest structure (species composition and species richness, abundance, and basal area) and estimated the bamboo cover in each plot. We recorded 1743 individuals of 68 tree species in the five analysed patches. The fragments were very similar in floristic composition and structure (species richness, abundance, basal area). The bamboo cover was the main factor affecting forest structure and species guilds distribution, followed by distance from the fragment edge. These results show a simplification of floristic, structural, and functional attributes of Araucaria Forest remnants suggesting that the selective logging followed by fragmentation and native bamboo overabundance are important factors in the imporishment of this endangered biome.
ABSTRACT This paper covers general aspects of the biology, physiology, management, breeding, medi... more ABSTRACT This paper covers general aspects of the biology, physiology, management, breeding, medicine and diseases of the order Piciformes (toucans, toucanets and woodpeckers).
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