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8 décembre 2016

Liste rouge 2016 des oiseaux mondialement menacés [LPO]

11 nouvelles espèces sont désormais menacées en France.

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8 décembre 2016

La déforestation favorise l’émergence de nouvelles maladies [Le Monde - Planète]

Une étude internationale révèle que l’exploitation de la forêt dans les zones tropicales stimule la propagation de nouveaux agents infectieux.

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8 décembre 2016

Common insecticides are riskier than thought to predatory insects [Phys]

Neonicotinoids—the most widely used class of insecticides—significantly reduce populations of predatory insects when used as seed coatings, according to researchers at Penn State. The team’s research challenges the previously held belief that neonicotinoid seed coatings have little to no effect on predatory insect populations. In fact, the work suggests that neonicotinoids reduce populations of insect predators as much as broadcast applications of commonly used pyrethroid insecticides.

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8 décembre 2016

The song of silence [Phys]

Like humans learning to speak, juvenile birds learn to sing by mimicking vocalizations of adults of the same species during development. Juvenile birds preferentially learn the song of their own species, even in noisy environments with a variety of different birdsongs. But how they can recognize their species’ song has, until now, remained a mystery. In a collaborative study, neuroscientists and a physicist at the Okinawa Institute of Science and Technology Graduate University (OIST) have uncovered an innate mechanism for species identification based on the silent gaps between birdsong syllables.

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7 décembre 2016

Biodiversité : tous les indicateurs sont au rouge [Le Monde - Planète]

Réunis à Cancun, au Mexique, 196 pays doivent tenter de stopper l’érosion de la vie sauvage, terrestre et maritime, dans le cadre d’une COP de la diversité biologique.

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