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Recurso libre

Evolution of seasonal ecological niches in the Passerina buntings (Aves : Cardinalidae)
MartínezMeyer, E - Peterson, AT - Navarro Sigüenza, Adolfo Gerardo

Formato:	Artículo de investigación
Enlaces:	and (ii) the derived state of the breeding (rather than winter) ecological niches of each species., The evolution of migration has long been considered complex and recent work has demonstrated additional complexity: some species follow the same ecological conditions throughout…
Fecha:	20110122T10:26:37Z, 20110122T10:26:37Z, 2004
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

The other face of Lyell: historical biogeography in his Principles of geology
BuenoHernández, AA - Llorente Bousquets, Jorge Enrique

Formato:	Article
Enlaces:	Although some excellent articles about Lyell's work have been published, they do not explicitly deal with Lyell's biogeographical conceptions. The purpose of this paper is to analyse Lyell's biogeographical model in terms of its own internal structure. Lyell tried to…
Fecha:	20110122T10:26:28Z, 20110122T10:26:28Z, 2006
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

IDENTIFYING CONSERVATION PRIORITIES IN MEXICO THROUGH GEOGRAPHIC INFORMATIONSYSTEMS AND MODELING
Azuara, I - BojorquezTapia, LA - Ezcurra, E - Flores Villela, Oscar Alberto

Formato:	Article
Enlaces:	Environmental assessments of regional development projects have been used in Mexico to determine where conflicts between conservation of biodiversity and resource extraction are likely to occur. Speciesrich areas have been acknowledged as a priority for conservation. However, biological information is…
Fecha:	20110122T10:28:30Z, 20110122T10:28:30Z, 1995
Recurso:	Facultad de Ciencias - UNAM