Threats Of Extinction
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. Mortality of primates due to roads and power lines in two forest patches in Bangladesh
ABSTRACT Primates are in imminent risk of extinction due to different types of anthropogenic activities. Mortality due to road accidents and electrocution from power lines are among the major direct anthropogenic threats to the survival of primates. We collected primate mortality data from 2015 to 2017 at Lawachara National Park and Satchari National Park in
Zoologia (Curitiba). Publicado em: 21/10/2019
-
2. Brazilian Science and Technology Policy and the Case of Embrapa Semiarid
Abstract This study focuses on Brazil’s international co-operation in science and technology (S&T), notably technical transfers to the semiarid branch of the Brazilian Agricultural Research Corporation (Embrapa) from the early 1990s onwards. It is based on interviews with Embrapa personnel, as well as literature and documentary reviews. It starts by outli
Contexto int.. Publicado em: 2016-08
-
3. A relevância das unidades de conservação na proteção de espécies arbóreas ameaçadas de extinção da Mata Atlântica do Sudeste da Bahia / The relevance of conservation units for the protection of tree species threatened by extinction from Atlantic Forest of Southeast of Bahia
A Floresta Atlântica do sudeste da Bahia apresenta uma das maiores riquezas de espécies arbóreas por área do planeta, com uma significativa porcentagem endêmica. Essas espécies encontram-se altamente ameaçadas pelos elevados índices de desmatamento, fragmentação de habitat e corte seletivo decorrente na região. As Unidades de Conservação têm ,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/12/2011
-
4. Pirarucu (Arapaima Gigas) Population Dynamics of Mamirauá Sustainable Development Reserve (MRSD),Amazonian / A Dinâmica Populacional do Pirarucu (Arapaima gigas) na reserva de Desenvolvimento Sustentável Mamirauá (RDSM), Amazônia
Pirarucu ( Arapaima gigas) has been one of the most important economic resources among all the fish species of the Brazilian Amazon for more than three centuries. The introduction of modern technologies of exploitation brought serious threats to the preservation of this species. Adequate management strategies have to be urgently introduced in order to preven
Publicado em: 2009
-
5. Ecoregion priorization for terrestrial vertebrate conservation / Priorização de ocorregiões para a conservação de vertebrados terrestres
I aimed to identify conservation priorities for terrestrial vertebrates across different spatial scales (from regional/continental to global), using ecoregions as geographic units. I have evaluated, in particular, (1) the congruence between overall richness and endemism patterns among terrestrial vertebrates that occur in Brazil, and the effectiveness of eac
Publicado em: 2008
-
6. Reproductive Biology, Population Dynamics and Risk of Extinction of Aegla strinatii Türkay, 1972 (Crustacea, Decapoda, Aeglidae) / Biologia reprodutiva, estrutura e dinâmica populacional e avaliação do grau de risco de extinção de Aegla strinatii Türkay, 1972 (Crustacea, Decapoda, Aeglidae)
This study aims to contribute for preservation of the only known population of Aegla strinatii and to reinforce the necessity to preserve the areas where this species occur. Therefore, monthly collections were realized during a two year period at Jacupiranga State Park which is considered to be the second largest conservation unit of São Paulo State. The sp
Publicado em: 2007
-
7. Spatial distribution and status of the marine manatee Trichechus manatus manatus (Sirena: Trichechidae) in the eastern coastal state of Ceará / Distribuição espacial e status do peixe-boi marinho Trichechus manatus manatus, (Sirenia: Trichechidae) no litoral leste do estado do Ceará
O peixe-boi marinho, Trichechus manatus manatus, é um mamífero com dieta herbívora, e distribuição costeira em rios, estuários e águas litorâneas da Zona Tropical brasileira. No Estado do Ceará ocorre em duas áreas distintas, no extremo dos seus setores leste e oeste. No litoral leste não existe nenhuma Unidade de Conservação com abrangência ma
Publicado em: 2006
-
8. AnÃlise do potencial ecoturÃstico para a pbservaÃÃo de aves (Birdwatching) na Ilha de ItamaracÃ/PE: o uso da atividade para o desenvolvimento local
The birdwatching is one of the most traditional nature-related activities, mainly in England and in the United States of America, and is defined as the collection of bird records in the natural environment, using binoculars as the main instrument. This activity is evolving into a type of specialized trip, joining a diversified list of ecotouristic activities
Publicado em: 2004
-
9. Human Population Density and Extinction Risk in the World's Carnivores
Understanding why some species are at high risk of extinction, while others remain relatively safe, is central to the development of a predictive conservation science. Recent studies have shown that a species' extinction risk may be determined by two types of factors: intrinsic biological traits and exposure to external anthropogenic threats. However, little
Public Library of Science.
-
10. The current biodiversity extinction event: Scenarios for mitigation and recovery
The current massive degradation of habitat and extinction of species is taking place on a catastrophically short timescale, and their effects will fundamentally reset the future evolution of the planet's biota. The fossil record suggests that recovery of global ecosystems has required millions or even tens of millions of years. Thus, intervention by hum
The National Academy of Sciences.