Conservation Of Biodiversity Genetic Variability
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Gene pool sharing and genetic bottleneck effects in subpopulations of Eschweilera ovata (Cambess.) Mart. ex Miers (Lecythidaceae) in the Atlantic Forest of southern Bahia, Brazil
Abstract Forest loss and fragmentation are the main threats to the maintenance of the Atlantic Forest, an important global biodiversity hotspot. Because of the current critical level of deforestation, ecological corridors are needed to facilitate species dispersion and gene flow among fragments. This study was conducted to investigate the genetic variability
Genet. Mol. Biol.. Publicado em: 14/11/2019
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2. Genetic structure and conservation of Mountain Lions in the South-Brazilian Atlantic Rain Forest
The Brazilian Atlantic Rain Forest, one of the most endangered ecosystems worldwide, is also among the most important hotspots as regards biodiversity. Through intensive logging, the initial area has been reduced to around 12% of its original size. In this study we investigated the genetic variability and structure of the mountain lion, Puma concolor. Using
Genetics and Molecular Biology. Publicado em: 15/12/2011
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3. Seleção de áreas prioritárias para conservação da diversidade genética para alvos múltiplos / Selection of priority areas for conservation of genetic diversity for multiple targets
A perda de espécies tem alta e acelerada taxa em todos os continentes, causada, por alguns fatores, como intensificação da agricultura e o crescimento das cidades. A principal conseqüência disso é a redução da paisagem, resultando na fragmentação de habitats e gerando grandes impactos negativos para a biodiversidade. Por isso a priorização de ár
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/02/2008
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4. Breeds in danger of extintion and biodiversity
Some arguments currently used to support breed conservation are examined. The central point is that we cannot conserve all breeds because we do not have financial resources enough to keep everything (mainly in developing countries) and in many cases we do not have special reasons to conserve breeds. A breed is a human product and it should not be confused wi
Revista Brasileira de Zootecnia. Publicado em: 2008-07
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5. Selection of priority areas for conservation of genetic diversity for multiple targets / Seleção de áreas prioritárias para conservação da diversidade genética para alvos múltiplos
A perda de espécies tem alta e acelerada taxa em todos os continentes, causada, por alguns fatores, como intensificação da agricultura e o crescimento das cidades. A principal conseqüência disso é a redução da paisagem, resultando na fragmentação de habitats e gerando grandes impactos negativos para a biodiversidade. Por isso a priorização de ár
Publicado em: 2008
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6. Optimization procedures for establishing reserve networks for biodiversity conservation taking into account population genetic structure
Conservation genetics has been focused on the ecological and evolutionary persistence of targets (species or other intraspecific units), especially when dealing with narrow-ranged species, and no generalized solution regarding the problem of where to concentrate conservation efforts for multiple genetic targets has yet been achieved. Broadly distributed and
Genetics and Molecular Biology. Publicado em: 2006
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7. Diversidade genética em populações de Aechmea fulgens Brongn. (Bromeliaceae) em fragmentos de Mata Atlântica em Pernambuco.
Habitats fragmentation is the greatest cause of biodiversity erosion in tropical forests among the anthropic action. Due to the high degree of fragmentation and the isolation of the remaining Atlantic forest, many populations are being extinguished locally while others are suffering losses of its genetic variability. The Bromeliaceae family has a great varie
Publicado em: 2006
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8. Molecular markers for population genetic analyses in the family Psittacidae (Psittaciformes, Aves)
The selection of molecular markers for population studies is an important tool for biodiversity conservation. The family Psittacidae contains many endangered and vulnerable species and we tested three kinds of molecular markers for their potential use in population studies of five psitacid species: 43 hyacinth macaws (Anodorhynchus hyacinthinus), 42 blue-and
Genetics and Molecular Biology. Publicado em: 2006
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9. Genetic structure of natural Eugenia dysenterica DC (Myrtaceae) populations in northeastern Goiás, Brazil, accessed by morphological traits and RAPD markers
The Brazilian Cerrado (Savannah) is a biome with great biodiversity. Many of the species found in this biome have unlimited economic potential and are used by the local population for various purposes. With the opening of the agricultural frontiers in this region, much of the native flora has been replaced by extensive areas of monocultures. Thirteen populat
Genetics and Molecular Biology. Publicado em: 2005-09
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10. Ecosystem recovery after climatic extremes enhanced by genotypic diversity
Contemporary climate change is characterized both by increasing mean temperature and increasing climate variability such as heat waves, storms, and floods. How populations and communities cope with such climatic extremes is a question central to contemporary ecology and biodiversity conservation. Previous work has shown that species diversity can affect ecos
National Academy of Sciences.