Compasión Animal

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Media: https://www.youtube.com/watch?v=iPRiQ6SBntQ

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[Solstrom]

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Media: https://www.youtube.com/watch?v=i1kgczmUTF8

[Solstrom]

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Media: https://www.youtube.com/watch?v=7MwQYcY479o

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Media: https://www.youtube.com/watch?v=K7kRDPmwzVI

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[Fermat]

Evolution to the rescue for white-coated critters caught out by climate change
Ruby Russell, 15.02.2018

Animals that grow a white coat in winter are at risk from predators as summers lengthen and snow cover retreats. But they could evolve faster than you might expect, according to a new study.



Our planet's northerly climes undergo extreme seasonal change — from round-the-clock darkness to midnight sun, and from barren icescapes to verdant meadows and lush forest.

Animals must take extreme measures to survive there. Some head south once summer's abundance is past. Some hibernate. And some make it through the winter with a costume change.

Swapping dull brown fur for a luxurious white winter coat means animals can stay camouflaged all year, helping them avoid predators or keep hidden as they stalk their prey.

Easy target
But as the climate changes, they're being caught in inappropriate attire for the season. Longer summers and reduced snow cover mean bright white fur or feathers can stand out like a beacon against an unseasonably snow-free habitat.

A team of scientists led by L. Scott Mills, a professor of wildlife biology at the University of Montana, studied the impact of this mismatch on the snowshoe hare, and came to the conclusion that the animal's population numbers were already falling.

"What was certain from our research is being white on a brown background kills," Mills told DW.

Fuente y galería de fotos
http://p.dw.com/p/2shKW

[jelpelo]

¡Qué patita tan linda...cómo no quererla con pasión animal. No como dice el título de tema !











Ya no juego loterías, pero no he perdido la costumbre de mirar la lista.

[Solstrom]

Pobre culebra vale!