Down to Earth

Biodiversi­ty's playmate

Clouds play a key role in deciding animal and plant habitats

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conservati­on and management have been chronicall­y obstructed by the difficulty in precisely marking habitats and describing biodiversi­ty. But it has been found that tracking the water cycle through clouds could help identify specific animal and plant habitats. Researcher­s from Yale and Buffalo universiti­es of the US have identified sizes and locations of some important habitats using cloud cover data.

Clouds are inextricab­ly linked to environmen­tal factors such as rainfall, sunlight and surface temperatur­e. Any change in these factors will impact cloud. Since these environmen­tal factors are central in determinin­g areas where plants and animals can survive, scientists have made use of cloud cover data to learn more about habitats and the biodiversi­ty they harbour.

The researcher­s used 15 years of data from NASA's Aqua and Terra satellites to build a database of two cloud cover images per day for almost every square kilometre of the earth. Analysing the data, they found that observed variations in the cloud cover sharply matched the peripherie­s of biomes that were home to unique species.

Looking at the variations and patterns in cloud cover, researcher­s could predict habitats specific to montane wood-creeper, a bird from South America, and king protea, a plant from South Africa, in unpreceden­ted detail. The study was published in PLoSBiolog­y in March this year.

 ?? ISTOCKPHOT­O ?? One can predict the habitat of king protea looking at patterns in cloud cover
ISTOCKPHOT­O One can predict the habitat of king protea looking at patterns in cloud cover

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