Sentences with phrase «surface ice algae»

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

The new study quantitatively assessed how surface ice algae contribute to darkening of the ice sheet, and found the algae reduce the ice sheet's albedo significantly more than non-algal materials, like mineral particles and black carbon.

Not exact matches

The ice algae seem to be one of the major players in this scheme — even the slight increase of the atmospheric temperature and liquid water production seems to promote algae colonization across the ice surface.

Perhaps, says Hayward, bryozoan larvae feed on algae that grow on the underside of sea ice; then they might accidentally surface when the ice breaks up in summer, before sinking to the bottom for good.

Such conditions would make photosynthesis impossible, both for the algae in the surface water directly under the ice and those dwelling deeper in the ice close to the ice - water interface.

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).

Recent research shows that there is high microbial activity on glacial surfaces (Anesio et al., 2009), some associated with pigmented algae, which absorb significantly more light than local inorganic dust particles on the Greenland Ice Sheet (GrIS)(Lutz et al., 2014).

To prevent the playing surface becoming «clogged» with ice, moss, algae and other detritus during the winter months, regular weekly drag brushing is essential.

Sea ice is critical for polar marine ecosystems in at least two important ways: (1) it provides a habitat for photosynthetic algae and nursery ground for invertebrates and fish during times when the water column does not support phytoplankton growth; and (2) as the ice melts, releasing organisms into the surface water [3], a shallow mixed layer forms which fosters large ice - edge blooms important to the overall productivity of polar seas.

They analyzed the relationship between the growth of the algae and the amount of light being reflected by the ice sheet surface.

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

New research shows algae growing on the Greenland ice sheet significantly reduce the ice sheet's surface reflectivity and contribute more to its melting than dust or black carbon.

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.