Consulta: subjectFacets:"Ecoregions"
Registros recuperados: 5
Data/hora: 09/06/2024 03:41:26

Biodiversity, Urban Areas, and Agriculture: Locating Priority Ecoregions for Conservation
Provedor de dados: Ecology and Society
Autores: Ricketts, Taylor; World Wildlife Fund; taylor.ricketts@wwfus.org; Imhoff, Marc; NASA's Goddard Space Flight Center; mimhoff@LTPmail.gsfc.nasa.gov.
Urbanization and agriculture are two of the most important threats to biodiversity worldwide. The intensities of these land-use phenomena, however, as well as levels of biodiversity itself, differ widely among regions. Thus, there is a need to develop a quick but rigorous method of identifying where high levels of human threats and biodiversity coincide. These areas are clear priorities for biodiversity conservation. In this study, we combine distribution data for eight major plant and animal taxa (comprising over 20,000 species) with remotely sensed measures of urban and agricultural land use to assess conservation priorities among 76 terrestrial ecoregions in North America. We combine the species data into overall indices of richness and endemism. We...
Tipo: Peer-Reviewed Reports
Palavras-chave: North America; Agriculture; Biodiversity; Conservation; Conservation priorities; Ecoregions; Endemism; Human land use; Species richness; Threats to biodiversity; Urbanization.
Ano: 2003

New records of Monodelphis kunsi (Didelphimorphia, Didelphidae) from Brazil
Provedor de dados: Mastozoología Neotropical
Autores: Hannibal,Wellington; Figueiredo,Valquiria V; Filho,Paulo Landgref; Godoi,Maurício N.
We review the known distribution of Monodelphis kunsi from South America and reported nine new localities of occurrence in Mato Grosso do Sul state, southwestern Brazil. These new records fill the gap on geographic distribution of M. kunsi in southwestern Brazil. The species presents wide geographic range including distinct habitats. The lack of studies in southwestern Brazil and the non-utilization of pitfall traps can be the main factors responsible for the lack of knowledge on distribution of small mammal species to this region.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Biogeography; Ecoregions; Pitfall traps; Pygmy short-tailed opossum; South America.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832012000200012

A preliminary revision of knowledge status of felids in Argentina
Provedor de dados: Mastozoología Neotropical
Autores: Lucherini,Mauro; Soler,Lucía; Luengos Vidal,Estela.
Argentina is the host of 10 wild felids (28% of the world total). Although the Cat Specialist Group Action Plan has classified the conservation status of Argentine cats as relatively good, the ranking was based on a largely incomplete database for at least 80% of the species. Here we review the current status of knowledge and research effort of Argentine cats, compare it with their distribution, habitat association and conservation status and provide guidelines for their future research. Between 1990 and 2000, cat research has received increasing attention in Argentina. Twenty-four projects have been carried out, but only 13 studies are still in progress. A rank of research priority has been calculated for each felid and ecoregion. Our analysis showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Carnivores; Conservation; Diversity; Ecoregions; Felids; Latin America; Leopardus tigrina; Oncifelis guigna; Oreailurus jacobita.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832004000100002

Potential distribution and new records of Trinomys species (Rodentia: Echimyidae) in the state of Rio de Janeiro
Provedor de dados: Revista Brasileira de Zoologia
Autores: Attias,Nina; Raíces,Daniel S. L.; Pessoa,Flávia S.; Albuquerque,Hermano; Jordão-Nogueira,Tássia; Modesto,Thiago C.; Bergallo,Helena de G.
The spiny rats of the genus Trinomys Thomas, 1921 have a broad distribution in the Atlantic Forests of southeastern Brazil. However, some species are known only from their type locality and adjacent areas. In our study, nine areas in the state of Rio de Janeiro were surveyed and three species of the genus were captured - Trinomys dimidiatus (Günther, 1877), T. setosus (Desmarest, 1817) and T. gratiosus bonafidei (MOOJEN, 1948). We extended the distribution of T. gratiosus bonafidei in 100 km, in a straight line to the northwest, and into an area of Semidecidual Seasonal Forest. We captured T. setosus, which had not been previously recorded in the state, in the municipality of Cambuci, extending its distribution 150 km, in a straight line to the east of its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecoregions; Climatic variables; Distribution models; Altitude.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000200013

Predicting geographic distributions of Phacellodomus species (Aves: Furnariidae) in South America based on ecological niche modeling
Provedor de dados: Acta Scientiarum: Biological Sciences
Autores: Costa, Maria da Salete Gurgel; Universidade de Brasília; Batista, Renato de Carvalho; Universidade de Brasília; Gurgel-Gonçalves, Rodrigo; UCB.
Phacellodomus Reichenbach, 1853, comprises nine species of Furnariids that occur in South America in open and generally dry areas. This study estimated the geographic distributions of Phacellodomus species in South America by ecological niche modeling. Applying maximum entropy method, models were produced for eight species based on six climatic variables and 949 occurrence records. Since highest climatic suitability for Phacellodomus species has been estimated in open and dry areas, the Amazon rainforest areas are not very suitable for these species. Annual precipitation and minimum temperature of the coldest month are the variables that most influence the models. Phacellodomus species occurred in 35 ecoregions of South America. Chaco and Uruguayan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.04.00.00-4 Synallaxinae; Climatic variables; Ecoregions; Maxent Zoologia.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/22165