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7 mars 2018

Termites sacrifice their elderly in ant wars : study [Phys]

In life-or-death battles with ants that invade their nests and eat their friends, termite fighters have adopted a military strategy very unlike that of humans, researchers wrote in the Royal Society Journal Biology Letters.

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7 mars 2018

Global Mangrove Carbon Stocks [Nature Ecology & Evolution - Behind The Paper]

As the economic value of the carbon stored in forests is becoming realized under various payment for forest carbon initiatives, it is becoming apparent that calculating the economic value of the carbon in mangrove forests may become a key component in their conservation. This was the driving force behind constructing a global mangrove carbon stocks database at a resolution that was useful to mangrove managers at all scales.

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6 mars 2018

One-fifth of Europe’s wood beetles at risk of extinction as ancient trees decline [The Guardian]

Demise of the beetles, that need rotting wood to survive, could have devastating knock-on effect for other species, say scientists in a new report.

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5 mars 2018

Two species of ravens nevermore ? New research finds evidence of ’speciation reversal’ [Phys]

For over a century, speciation—where one species splits into two—has been a central focus of evolutionary research. But a new study almost 20 years in the making suggests "speciation reversal"—where two distinct lineages hybridize and eventually merge into one—can also be extremely important. The paper, appearing March 2 in Nature Communications, provides some of the strongest evidence yet of the phenomenon, in two lineages of Common Ravens.

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2 mars 2018

Après la mort, certains gènes bougent encore [Sciences & Avenir - Santé]

Des chercheurs ont observé et mesuré l’activité génétique après le décès d’une personne. Des travaux qui permettent d’évaluer l’heure de la mort avec une extrême précision.

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