Disturbed Forest Fragments
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Demography of the endangered tree species Ocotea porosa (Lauraceae) along a gradient of forest disturbance in southern Brazil
Ocotea porosa (Ness) Barroso (Lauraceae), a typical tree of the southern Atlantic Forest in Brazil, was heavily exploited for timber in the last century. With the aim of examining the status of the remaining populations, we surveyed five forest fragments in the state of Paraná, in southern Brazil, and evaluated whether disturbances caused by selective loggi
Acta Bot. Bras.. Publicado em: 2014-12
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2. What is the importance of open habitat in a predominantly closed forest area to the dung beetle (Coleoptera, Scarabaeinae) assemblage?
What is the importance of open habitat in a predominantly closed forest to the dung beetle assemblage? The Atlantic Forest in Brazil is one of the most highly disturbed ecosystems and is mainly represented by fragmented areas. However, in places where human disturbances have ceased, certain areas are showing a natural regeneration pattern. The aim of the pre
Rev. Bras. entomol.. Publicado em: 2013-09
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3. Estrutura populacional de Aspidosperma polyneuron Muel. Arg. (Apocynaceae) em fragmento florestal do baixo Rio Tibagi por marcadores AFLP
The XXI century is characterized by intense fragmentation of tropical forests around the word which is responsible for environmental degradation, climate changes and loss of biodiversity. Such process is the focus of many studies that intend, primarily, to identify the effect of devastation in the gene pool of species that occupy degraded areas. The Tibagi R
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2010
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4. Management of lianas in semideciduous forest and cerradão edges, Santa Rita do Passa Quatro, SP / Manejo de lianas em bordas de floresta estacional semidecidual e de cerradão, Santa Rita do Passa Quatro, SP
In São Paulo state, throughout the same climatic zone, semideciduous forests and cerradão patches commonly share the same geographic area. Currently, these two formations are reduced to small fragments, in advanced stage of disturbance. Along with the fragmentation of the forest, there is an increase in ligth incidence at the edges and lianas generally inc
Publicado em: 2010
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5. Composição da avifauna e frugivoria por aves em um mosaico de vegetação secundária em Rio Claro, região centro-leste do Estado de São Paulo
The study of birds was conducted in a secondary vegetation mosaic of 44 ha, located in the central-eastern Sao Paulo State, between 2007 December and 2009 January. Were among the goals: get the list of bird species throughout the area, evaluate the community structure of a small fragment and a mixed reforestation representing the vegetation mosaic, and compa
Publicado em: 2009
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6. Aspectos da estrutura fitossociológica e silvigenética em fragmentos de floresta estacional semidecídua com diferentes histórias de perturbação em Botucatu, SP / Aspects of the phytossociological and silvigenetic structure of seasonal semi deciduous forest fragments with different disturbance histories, at Botucatu, SP
The seasonal semi deciduous forest fragments in São Paulo State suffered the fragmentation process mainly because agricultural and urban expansion. These remnants are very important for taxonomic and ecological studies, although they are much altered. By joining phytossociological and silvigenetic studies is possible a diagnosis of their present situation,
Publicado em: 2008
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7. Padrões e processos ecológicos do componente arbóreo em uma área de floresta estacional semidecidual (Araguari, MG) / Ecological Patterns and Processes on the Tree Layer in a Seasonal Semideciduous Forest (Araguari, MG)
This thesis deals with the study of the tree component in a seasonal semideciduous forest (FES) with a good state of conservation. Initially, it was prepare a general introduction, showing the importance of the detailing study of forests well preserved, as comparative basis with disturbed forests. After this context, the thesis has been divided into two chap
Publicado em: 2008
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8. Ecological Patterns and Processes on the Tree Layer in a Seasonal Semideciduous Forest (Araguari, MG) / PadrÃes e processos ecolÃgicos do componente arbÃreo em uma Ãrea de floresta estacional semidecidual (Araguari, MG)
This thesis deals with the study of the tree component in a seasonal semideciduous forest (FES) with a good state of conservation. Initially, it was prepare a general introduction, showing the importance of the detailing study of forests well preserved, as comparative basis with disturbed forests. After this context, the thesis has been divided into two chap
Publicado em: 2008
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9. Efeito de borda e reduÃÃo de diversidade vegetal: o papel da Attalea oleifera Barb. Rodr. (Arecaceae)
Due to dispersion lack, germination failure and increased mortality rates, the seedling bank in forest edges is impoverished and scarce. To understand how habitat fragmentation and edge creation affects recruitment is crucial to identify threats to tree population maintenance in a fragmented landscape. The present work aims to evaluate if Attalea oleifera, a
Publicado em: 2005
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10. Fungos MicorrÃzicos arbusculares (glomeromycota) em fragmentos de mata atlÃntica no centro de endemismo Pernambuco
â (Arbuscular mycorrhizal fungi (Glomeromycota) in fragments of Atlantic Forest in the Pernambuco Endemism Center). The Atlantic Forest is well known for its high biological diversity but now is extremely disturbed. The arbuscular mycorrhizal fungi (AMF) affect the floristic composition, the stabilization of natural systems, being an important element on so
Publicado em: 2004
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11. Estrutura de populações de Xylopia aromatica (Lam.) Mart. (Annonaceae) e Roupala montana Aubl. (Protecease) em quatro fragmentos de cerrado sensu lato no municipio de Itirapina/SP
The population structure of two species, Xylopia aromatica and Roupala montana, has been studied in four fragments of cerrado in Itirapina, SP, SE Brazil, with different physiognomies and disturbance histories, and in three areas of similar physiognomies within the same fragment. Within each fragment a grid of 200-contiguous-plots 5 x 5 m has been installed,
Publicado em: 2004
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12. Comunidade de morcegos em uma paisagem fragmentada da Mata Atlantica do Sul da Bahia, Brasil
The process of forest conversion on the tropical fragmented and disturbed landscapes is considered a major cause leading to the present high rates of extinction. The present study attempted to investigate the impact of forest fragmentation in a landscape of the Atlantic forest located in the southern part of the State of Bahia, Northeastern Brazil. Forest st
Publicado em: 2002