Birds Dispersal
Mostrando 1-12 de 47 artigos, teses e dissertações.
-
1. Knowledge gaps regarding frugivorous ecological networks between birds and plants in Brazil
Abstract Vegetation stability, resilience and regeneration can be achieved by various ecological processes, the most important of which is seed dispersion. Among animal groups, birds have the largest number of frugivorous species in the Neotropics. The aim of this study was to conduct a bibliometric analysis to detect general patterns and discover knowledge
Pap. Avulsos Zool.. Publicado em: 28/11/2019
-
2. Frugivoria por aves em quatro espécies de Cactaceae na Caatinga, uma floresta seca no Brasil
RESUMO As aves são conhecidas por desempenharem um importante papel na reprodução de diversas espécies de plantas através da frugivoria e dispersão de sementes. Apesar da importância das cactáceas em ambientes sazonais, poucos estudos avaliaram interações entre essas plantas e aves frugívoras. O presente trabalho identificou as espécies de aves q
Iheringia, Sér. Zool.. Publicado em: 21/10/2019
-
3. Insights into the development of a juvenile harpy eagle’s hunting skills
RESUMO O período pós-emplumagem é de suma importância para os rapinantes, pois é quando um jovem desenvolve a habilidade de caça necessária na idade adulta e a independência por meio da dispersão. Entretanto, pouco se sabe sobre esse estágio na vida de rapinantes como o gavião-real, Harpia harpyja. Entre março 2016 e julho 2017, três tentativas
Acta Amaz.. Publicado em: 06/05/2019
-
4. Genetic diversity of populations of the dioecious Myrsine coriacea (Primulaceae) in the Atlantic Forest
ABSTRACT Although a species’ sexual system may influence the genetic diversity of its populations in their natural environment, there have been few such studies involving indigenous species of the Atlantic Forest. Here we study Myrsine coriacea, a dioecious tree widely used in reforestation programs despite a lack of information about its natural interpopu
Acta Bot. Bras.. Publicado em: 09/04/2018
-
5. Fruits and frugivores of the Brazilian Cerrado: ecological and phylogenetic considerations
ABSTRACT Knowing the morphological and phylogenetic patterns of fruits of a plant community may elucidate plant-frugivore interactions, and analysis of dispersal syndromes is a practical approach to understanding these mutualisms. We investigated different zoochorous fruits and frugivorous animals among Cerrado formations (forest, savanna and grassland), map
Acta Bot. Bras.. Publicado em: 2016-09
-
6. Key factors affecting seed germination of Copaifera langsdorffii, a Neotropical tree
In natural conditions biotic and abiotic factors interact, synergistically affecting seed germination. In this study, we experimentally simulated natural conditions that occur during seed dispersal that can affect the germination of Copaifera langsdorffii. Specifically we evaluated the effect of aril removal by different dispersal agents (birds and ants) and
Acta Bot. Bras.. Publicado em: 2015-12
-
7. Host specificity and experimental assessment of the early establishment of the mistletoe Phoradendron crassifolium (Pohl ex DC.) Eichler (Santalaceae) in a fragment of Atlantic Forest in southeast Brazil
Mistletoe establishment relies heavily on a seed reaching a proper host plant. Small frugivorous birds usually disperse large numbers of mistletoe seeds. However, in the field, mistletoes are absent from some potential available hosts. We investigated whether the mistletoe Phoradendron crassifolium has some preferences for specific host trees in a fragment o
Acta Bot. Bras.. Publicado em: 2014-12
-
8. Partitioning of seed dispersal services between birds and bats in a fragment of the Brazilian Atlantic Forest
Community-level network studies suggest that seed dispersal networks may share some universal properties with other complex systems. However, most of the datasets used so far in those studies have been strongly biased towards temperate birds, including not only dispersers, but also seed predators. Recent evidence from multi-taxon networks suggests that seed
Zoologia (Curitiba). Publicado em: 2014-06
-
9. O valor de corredores florestais para a conservação de aves em paisagens fragmentadas / The value of forest corridors to bird conservation in fragmented landscapes
Habitat loss and fragmentation are major threats to biodiversity. Habitat corridors linking remnants are a popular strategy to reduce the negative effects of habitat loss and fragmentation. However, the evaluation of the effectiveness of corridors in conservation is limited by lack of empirical evidence, especially in the neotropics. In this thesis we empiri
Publicado em: 2011
-
10. Relações entre aves dispersoras de sementes e manchas florestais em matriz campestre na Serra do Sudeste, RS / Relations between seed dispersal birds and forest patches in grassland matrix in Serra do Sudeste, RS
Os ecossistemas de campo no sul do Brasil apresentam distribuição em mosaicos naturais com florestas, representadas por matas ciliares, manchas florestais, entre outras formações. Há uma tendência natural da expansão das áreas florestais sobre as campestres, e aves desempenham um papel importante nessa expansão ao levarem sementes de áreas-fonte (m
Publicado em: 2011
-
11. Padrões de assembléia de aves frugíveras em diferentes estágios sucessionais na Mata Atlântica do sul do Brasil / Patterns of frugivorous birds assemblage in different successional stages in the southern Brazil Atlantic Forest
A composição e abundância de aves podem variar de acordo com diferentes graus de modificação de habitat, como quanto a estágios sucessionais e estrutura da vegetação. Dada a importância da dispersão de sementes pela avifauna no processo de sucessão florestal, o objetivo deste trabalho foi verificar a abundância, riqueza e composição da assembl�
Publicado em: 2010
-
12. Oferta de frutos e frugivoria por aves, em espécies do gênero Miconia Ruiz &Pav. (Melastomataceae) em duas áreas do Cerrado / Fruit supply and bird frugivory in species of Miconia Ruiz &Pav. (Melastomataceae) in areas of Cerrado, Brazil
The goals of this study were: to determine the seasonality, duration and fruit supply peaks of Miconia albicans, M. ibaguensis, M. affinis, M. theaezans and M. chamissois; to verify the nutritional quality of these fruits (Chapter I); to evaluate which birds feed on these fruits, and to verify which birds are the main dispersers of each Miconia species (Chap
Publicado em: 2010