Cities may 10 to 15 degrees Fahrenheit warmer than the surrounding rural areas, with asphalt roads and other properties absorption and the holding of more energy from the sun as a natural landscape. The researchers, the urban development "heat island".
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The researchers have examined the colonies of leaf-cutting ants (Atta sexdens rubropilosa) inside and outside of Sao Paulo, Brazil, South America, the largest city with a population of more than 11 million people. They focused on the means and the urban and rural ants tolerate extreme heat and cold in the premises of the testing phase.
With 107.6 degrees Fahrenheit, scientists from the urban ants lasted 20 percent longer than ants from outside the city before the extreme heat knocked her implementation. Strangely, although the researchers expected that the extreme cold in the city of ants faster, they found urban ants back storage at 32 degrees Fahrenheit (0 degrees Celsius) in ice-Entombed Petri dishes around so fast that the ants, which outside the city.
"We do not know whether this model to other species or other cities, but people should be sure to research," researcher Michael Angilletta the State University of Indiana said in a prepared statement. "Ultimately, this research could help us to understand how the species are responding to global climate change."
"We will thermal maps using satellite images, which over several years," said Qihao Weng researchers at Indiana State University. "These cards can be the potential biological effects of urban warming and identify suitable locations for future experiments."
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