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The secret behind spectacular blooms in world’s driest desert

Phys.org/news (OCTOBER 21, 2022)

Titre : The secret behind spectacular blooms in world’s driest desert

Phys.org/news (OCTOBER 21, 2022)

Présentation
The Atacama desert, which stretches for approximately 1,600 km along the western coast of the cone of South America, is the driest place on Earth. Some weather stations there have never recorded rainfall throughout their existence. But it’s far from barren : many species live here that occur nowhere else, adapted to its extreme conditions And approximately every 5 to 10 years, from September to mid-November, the Atacama hosts one of the most spectacular sights of the natural world : the "desierto florido" (literally "blooming desert"). These mass blooms, one of which is currently going on in the northern Atacama after abundant rainfall earlier this year, often attract media attention from around the globe.

But which physiological and evolutionary mechanisms enable the great diversity of colors, shapes, and visual patterns of flowers during desiertos floridos ? And how do pollinators—in the Atacama, mainly hymenopterans like solitary wasps and bees—for whose benefit this visual extravaganza evolved, perceive all this variation ?That’s the subject of a new study in Frontiers in Ecology and Evolution.

Source  : Frontiers

Annonce (Phys.org/news)

Page publiée le 13 janvier 2023