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26 janvier 2018

How are river ecosystems affected by regulation ? [The Freshwater Blog]

Natural variations in water flow are important for many reasons. One is that they can ‘clean’ the river bottom. Although this can be devastating for the organisms which are ripped off by a flood, or killed by a drought, such ‘cleaning’ creates open spaces for colonisation by other organisms. Disturbance by floods and droughts is – in the long run – important for maintaining biodiversity in rivers.

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26 janvier 2018

Think of honeybees as ’livestock,’ not wildlife, argue experts [Phys]

The ’die-off’ events occurring in honeybee colonies that are bred and farmed like livestock must not be confused with the conservation crisis of dramatic declines in thousands of wild pollinator species, say Cambridge researchers.
Writing in the journal Science, the conservationists argue there is a "lack of distinction" in public understanding - fuelled by misguided charity campaigns and media reports - between an agricultural problem and an urgent biodiversity issue.

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25 janvier 2018

Decoding the Axolotl genome [Phys]

A team of researchers led by scientists in Vienna, Dresden and Heidelberg has decoded the entire genetic information of the Mexican salamander axolotl. The axolotl genome, which is the largest genome ever to be sequenced, will be a powerful tool to study the molecular basis for regrowing limbs and other forms of regeneration.

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25 janvier 2018

Why beetles are the most important organisms on the planet [The Guardian]

From the minuscule to the mighty, tree-dwellers to pond-swimmers, millions of beetle species reveal a wealth of information about the world we live in.

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24 janvier 2018

Noise pollution forces Canadian songbirds to change their tunes [Phys]

Some Canadian songbirds have to change their tunes because noise pollution from things like oil and gas drilling equipment otherwise drowns out important parts of their songs, University of Manitoba researchers have found.
Birdsongs carry information, like how fit or "sexy" the singer is, the species, even the individual’s "name" and motivation. Miya Warrington and Nicola Koper from the U of M’s Natural Resources Institute looked at what parts of the birdsongs were changing to learn what aspects of their song are most under threat of being drowned out by noise.

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