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26 février 2018

Plants evolve away from obsolete defenses when attacked by immune herbivores, study shows [Phys]

The study, published in New Phytologist and led by Tatyana Livshultz, PhD, assistant curator of Botany at the Academy and an assistant professor in the College of Arts and Sciences, found genetic evidence that multiple lineages of plants, whose ancestors produced a chemical that may deter herbivores, evolved to stop producing it, potentially as a response to a prime foe’s immunity.

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26 février 2018

The terrifying phenomenon that is pushing species towards extinction [The Guardian]

Scientists are alarmed by a rise in mass mortality events – when species die in their thousands. Is it all down to climate change ?

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26 février 2018

Tropical trees use unique method to resist drought [Phys]

Tropical trees in the Amazon Rainforest may be more drought resistant than previously thought, according to a new study by researchers at the University of California, Riverside.

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26 février 2018

The mystery behind the proboscis monkey’s big nose [Phys]

Exaggerated male traits, such as a large nose, can be great for attracting females, finds a study of proboscis monkeys in Malaysia.

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26 février 2018

L’agriculture française à la croisée des chemins [The Conversation]

Boom du bio, expérimentations sur les toits des villes, émergence du biocontrôle… mais aussi scandales sanitaires, précarité de nombreux agriculteurs, dégradation des sols et usage de pesticides fatal aux insectes pollinisateurs : sur fond d’aspirations et d’injonctions souvent contradictoires, l’agriculture et les agriculteurs français semblent arrivés à la croisée des chemins.

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