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17 janvier 2017

Les amphibiens ne perdent pas la mémoire quand ils hibernent [Sciences et Avenir - Animaux]

Après cent jours de léthargie, des salamandres ont retrouvé l’itinéraire menant à de la nourriture qu’elles avaient mémorisé avant leur hibernation. Contrairement aux mammifères, les amphibiens ne perdraient donc pas la mémoire l’hiver.

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17 janvier 2017

Lichens and the “health” of ecosystems : we are closer to a global ecological indicator [Methods in Ecology and Evolution - Blog]

For the first time, it is possible to integrate at the global scale the results obtained with the most widely used methods to evaluate the “health” of ecosystems using lichens. This is the result of a study now published in the journal Methods in Ecology and Evolution, and represents a fundamental step for this indicator to be considered at the global scale and included in the list of indicators of the United Nations.

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16 janvier 2017

Ring-Tailed Lemur Populations Have Crashed by 95 Percent [Scientific American]

As few as 2,000 of these beloved primates remain in the forests of Madagascar, according to new research.

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16 janvier 2017

Harvester ants farm by planting seeds to eat once they germinate [New Scientist]

They’ve cracked it. Small ants carry home large seeds to eat all the time, but no one knew exactly how they managed to break through the seeds’ tough exterior.
It turns out that Florida harvester ants, Pogonomyrmex badius, have developed a clever farming strategy to do so – they plant seeds, wait for them to germinate and then eat the soft spoils.

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16 janvier 2017

Ecosse : Shetland, le sanctuaire des oiseaux [GEO]

Chaque été, un million d’oiseaux de mer viennent se reproduire dans l’archipel des Sheltand, dans le nord de l’Ecosse. Un spectacle visuel et sonore étonnant. Mais pour combien de temps encore ?

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