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“Glacier blood” in the French Alps is a potential marker of climate change, scientists say




Bloody red stains on glaciers in the French Alps, miles of snow appearing as traces of a slaughter, scientists call them signs of a worsening climate crisis.

A phenomenon called “glacier blood” is a phenomenon in which microalgae interact with pollutants. Climate changeAccording to a recent study published in The frontier of plant science.

A group of scientists in Grenoble, France, conducted a study entitled AlpAlga in the mountains 3,280-9,842 feet above sea level to understand the high mountains. Algae It causes red snow and can act as a “potential marker of climate change”.

Like microalgae inhabiting oceans, lakes and rivers, snow-carried microalgae form the basis of food networks in mountain ecosystems and are likely to respond to pollution and climate change in a similar manner. Eric Marechal, coordinator of the Alpa Alga Consortium, said. , And quoted by Live Science. Marechal is also the director of the Institute for Cell and Plant Physiological Sciences, a research facility in Grenoble, France.

The algae that turn red like snow are actually green algae. Green algae, as the name implies, are green, but in warmer climates they produce orange or red pigments that act as antioxidants. Sunscreen protects against the harmful effects of intense light and UV rays.

Snow coloring is a phenomenon known to scientists, and colorful coverings have long been found in cold climates, keeping certain areas warmer. However, the mysteries surrounding these microorganisms have not yet been clarified. Through the AlpaAlga project, researchers are now investigating organisms to understand if they have the potential to become biomarkers of climate change.

“Algae are probably markers of climate change,” Marechal said. Live science Before adding, he adds that microalgae growth reflects elevated carbon dioxide levels and associated environmental changes.

“In my life, I’ve seen the disappearance of ecosystems on a scale of decades instead of 100 years,” research author Marechal told Live Science. “This ecosystem is very It’s vulnerable. “

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