Plant Recruitment
Mostrando 13-24 de 72 artigos, teses e dissertações.
-
13. Seed rain in areas with and without bamboo dominance within an urban fragment of the Atlantic Forest
Understanding the flow of diaspores is fundamental for determining plant population dynamics in a particular habitat, and a lack of seeds is a limiting factor in forest regeneration, especially in isolated forest fragments. Bamboo dominance affects forest structure and dynamics by suppressing or delaying the recruitment of and colonization by tree species as
Acta Bot. Bras.. Publicado em: 2014-03
-
14. Compostos orgânicos voláteis na defesa induzida das plantas contra insetos herbívoros
The identification and manipulation of chemical compounds involved in vital activities of arthropods have the potential for developing less aggressive pest control strategies. Herbivory induces the emission of volatile organic compounds involved in the recruitment of natural enemies, plant-plant interactions and repellency of other herbivores. In this report
Quím. Nova. Publicado em: 2013
-
15. Downstream passage of fish larvae and eggs through a small-sized reservoir, Mucuri river, Brazil
In South America, one important symptom of the failure of fish passages to sustain fish migratory recruitment is the inability of eggs and larvae to reach the nurseries. This is especially so when the breeding areas are located upstream of a reservoir, and the floodplain is downstream of the dam. Therefore, the transport of fish larvae and eggs across reserv
Zoologia (Curitiba). Publicado em: 2011-12
-
16. Estudo populacional e do potencial invasor da espécie exótica Leucaena leucocephala (Lam.) de Wit em floresta estacional semidecidual
Leucaena leucocephala (Lam.) de Wit is one of the more than 100 species of exotic invasive vascular flora currently registered in Brazil. Planted as hedge at the edge of the semideciduous forest remnant in the IbiporA Forest Park about 25 year ago, it occupieds part of the edge of the remnant, raising the hypothesis that it might invade areas of native fores
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2010
-
17. The role of seed mass on the caching decision by agoutis, Dasyprocta leporina (Rodentia: Agoutidae)
It has been shown that the local extinction of large-bodied frugivores may cause cascading consequences for plant recruitment and overall plant diversity. However, to what extent the resilient mammals can compensate the role of seed dispersal in defaunated sites is poorly understood. Caviomorph rodents, especially Dasyprocta spp., are usually resilient frugi
Zoologia (Curitiba). Publicado em: 2010-06
-
18. Estudo de interações de parasitoides de insetos endófagos em frutos do cerrado
Interactions between endofagous insects in fruits play an important role in ecological communities, since the seed survivorship and hence the successes in recruitment of plant populations are directed related to damage caused by the herbivory from these insects. Because of the specialization of the herbivorous insects, the insect-plant interactions tend to b
Publicado em: 2010
-
19. Remoção de sementes por formigas, aves e roedores em área de Cerrado e seu efeito sobre o recrutamento de plântulas / Seed removal by ants, birds and rodents in a cerrado area and its effects on seedling recruitment
Many plant populations are affected by seed consumers since these can affect the rates and patterns of seedling recruitment. Ants, birds and rodents are main agents of seed removal. Therefore, the aim of this study was to determine the relative importance of ants, birds and rodents on seed removal in different types of Cerrado vegetations and to determine th
Publicado em: 2008
-
20. Variação temporal do componente lenhoso e de cactáceas de uma área de caatinga em Betânia/PE
Growth, recruitment and deaths of woody and cactus plants were monitored, along five years, in a caatinga community in a semiarid site, in Northeastern Brazil, with 511 mm and 25 oC average annual rainfall and temperature. All plants with stem diameter at soil level >3 cm, within one hectare, were marked and measured in 2001 and 2006. The number of species i
Publicado em: 2008
-
21. A distribuiÃÃo das formigas cortadeiras (Atta chephalotes) e seu papel na regeneraÃÃo de um trecho de Floresta AtlÃntica Nordestina
The leaf-cutting ants are considered important herbivores in Neotropical primary forests because they promote spatial and temporal heterogeneity of resources such as light, nutrients and soil. Despite their known importance, their distribution in early secondary forests and their role on forest regeneration are still poorly studied. This work was developed i
Publicado em: 2008
-
22. Efeito do fogo em populações de capim dourado (Syngonanthus nitens Eriocaulaceae) no Jalapão, TO
Cerrado plants have co-existed with fire, natural or anthropic, for millions of years. Cerrado communities use fire to form and renew pastures and prepare fields for farming. In the Jalapão region, Eastern Tocantins state, fire is also used by local communities to promote golden grass (Syngonanthus nitens, Eriocaulaceae) flowering. Golden grass handicrafts
Publicado em: 2007
-
23. Interactions etween ants, fruits and seeds in the cerrado : the role of ants in the biology of seeds and seedlings / Interações entre formigas, frutos e sementes em solo de cerrado : o papel de formigas na biologia de sementes e plantulas
Our knowledge about seed dispersal systems has been improved considerably in the last few years. An increasing number of studies has shown that the process of plant regeneration is often much more complex than we realize, including several different agents across subsequent steps of seed dispersal. For instance, ants may reshape the seed shadow after seeds f
Publicado em: 2007
-
24. Regime de distúrbio e dinâmica da regeneração natural na Floresta Pluvial Atlântica Submontana / Disturbance regime and natural regeneration dynamics in the Lower Montane Atlantic Rain Forest
In a 10.24 ha permanent plot of Tropical Lower Montane Atlantic Rain Forest in the Carlos Botelho State Park (Sete Barras, SP, Brazil), this study aimed to describe the canopy disturbance regime and to assess natural regeneration under different light regimes. In order to do so, the plot was completely surveyed for canopy gaps that were measured and had thei
Publicado em: 2007