Si seguimos así, el 50% de todas las especies habrán desaparecido para el 2050», aseguró ayer en la presentación de la estrategia la secretaria de Estado de Cambio Climático, Teresa Ribera, quien dio a conocer que los vertebrados amenazados han pasado del 26% en 1992 al 30% en el 2007. Leer más.
Il declino delle popolazioni di anfibi potrebbe stimolare un aumento delle zanzare in tutto il mondo. Leer más.
 | New research on lizards in the Caribbean demonstrates that species diversification is limited by the environment. The finding supports and extends the MacArthur-Wilson theory of island biogeography. It’s long been accepted by biologists that environmental factors cause the diversity — or number — of species to increase before eventually leveling off. Some recent work, however, has suggested that species diversity continues instead of entering into a state of equilibrium. But new research on lizards in the Caribbean not only supports the original theory that finite space, limited food supplies, and competition for resources all work together to achieve equilibrium; it builds on the theory by extending it over a much longer timespan. |
Take a tour of the best of New Scientist‘s weekly bestiary, featuring invulnerable bats, solar-powered hornets and some deeply peculiar sea creatures. Leer más.
La zona de Roscas, es un paisaje único en Navarra, con sus cortados de formas y geología características. Alberga una importante fauna de mamíferos, aves, anfibios y reptiles, existiendo en ella especies catalogadas como en peligro de extinción. Leer más.
