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Mostrando ítems 41-50 de 53
Dieta y alimentación hispano-americana en el Caribe y la Florida en el siglo XVI
(1991)
Los esfuerzos coloniales europeos alcanzaron un mayor éxito en aquellas zonas americanas donde se arraigaron las plantas y los animales que los españoles llevaron consigo. Esta afirmación parece indicar que las plantas ...
Vicariance and dispersal in Caribbean biogeography
(1996)
The species diversity and phylogenetic relationships of West Indian vertebrates are incompletely known, but several lines of evidence support a dispersal origin for most of the fauna. Crother and Guyer have contested much ...
Determination of gender in cetaceans by the polymerase chain reaction
(1992)
We determined the gender of a variety of cet can species, including both ondotocetes and mysticetes, using the polymerase chain reaction for amplification of the sex chromosome specific regions ZFY/ZFX and SRY. This quick ...
Global amphibian declines : a perspective from the Caribbean
(1993)
Recent concern over the possibility of a global decline in amphibians prompted this assessment of the West Indian species. At the species level, the West Indian amphibian fauna (156 species, all frogs and toads) has not ...
Phylogeography of the West Indian manatee (Trichechus manatus): how many populations and how many taxa?
(1998)
To resolve the population genetic structure and phylogeography of the West Indian manatee (Trichechus manatus), mitochondrial (mt) DNA control region sequences were compared among eight locations across the western Atlantic ...
Reefs from space : satellite imagery, marine ecology, and ethnography in the Dominican Republic
(1994)
Coral reef bleaching is an obvious indication that coastal marine ecosystems are being stressed. However, bleached reefs alone are poor indicators because they reflect the final stages of stress. This research project used ...
Conservation of biological diversity in the Dominican Republic
(1993)
The Dominican Republic on the island of Hispaniola has the highest degree of biological diversity in the Caribbean. The country's wildlife service (Departamento de Vida Silvestre) carried out investigations at ecosystem ...
La ética ecológica como una nueva dimensión de la bioética y la ética ambiental vinculada al desarrollo sostenible
(1997)
Se ha comenzado a hablar de "ética ecológica", que se hace sinónimo de "ética ambiental" o para el medioambiente, sobre todo en esta década de los noventa y en relación al núcleo tenaz que se vinculó a la Conferencia de ...
Contaminación química : retos y perspectivas
(1992)
Una paronámica sobre la contaminación química del medioambiente, se presenta en este trabajo, destacándose los pincipales contaminantes químicos con sus efectos sobre la atmósfera, el suelo y las aguas. Se abordan los ...
Comments on the ecology and status of the Hispaniolan Crossbill (Loxia leucoptera megaplaga), with recommendations for its conservation
(1994)
The rare and unique Hispaniolan White-winged Crossbill (Loxia Ieucoptera megaplaga) is endemic to the mountains of Hispaniola. It is specialized for harvesting seeds from the cones of Pinus occidentals, and is dependent ...