Sentences with phrase «ice algae produce»

Surface ice algae produce dark pigments to protect themselves from high intensity radiation, further darkening the sheet surface, Stibal said.

Not exact matches

The fossil record showed that before the ice emerged, some dinoflagellates produced their own energy via photosynthesis; others fed on photosynthesising algae.

By taking ice samples for the last five winters and analyzing for the chlorophyll produced by algae and photosynthetic bacteria, Twiss and his team have determined that from November to April the Lake experiences great primary productivity, more so than in spring or summer.

Some of these biomarkers are produced by certain species of algae, among which one group can only be found in open surface water, while the members of another group only live in sea ice (or did so in the Earth's distant past).

But the latest research into sulphur - producing algae, ancient ice cores, and sea sediments from the North Atlantic region could help climatologists

Measuring algae produced in sea ice is no easy task.

Seafloor sediments show that during past ice ages, more iron - rich dust blew from chilly, barren landmasses into the oceans, apparently producing more algae in these areas and, presumably, a natural cooling effect.

Algae grow on other ice surfaces in areas such as the Himalayas, where they reside on water - producing glaciers.

Unseasonably warm summers appear to be abetted by microbes and algae that grow on the increasingly wet surface of the ice sheet, producing pigments that boost the ice's absorption of solar energy.