Scientists track penguin poop from space
According to
CNN, British scientists are tracking penguins by a very.....unusual means.
British scientists are using pictures from high-powered satellites to pinpoint emperor penguin colonies in Antarctica.
The penguins are difficult to pick up on sea ice, because of their
natural camouflage that helps them blend into the shadows -- so the
British Antarctic Survey had to come up with another method.
Fortunately, penguin waste shows up nicely from space, staining the ice a light brown.
"We can't see actual penguins on the satellite maps because the
resolution isn't good enough," said mapping expert Peter Fretwell. "But
during the breeding season the birds stay at a colony for eight months.
The ice gets pretty dirty and it's the guano stains that we can see."
The method helped scientists identify 38 penguin colonies -- of those,
10 were new. Of previously known colonies, six had re-located and six
were not found.
"This is a very exciting development. Now we
know exactly where the penguins are, the next step will be to count
each colony so we can get a much better picture of population size,"
said penguin ecologist Phil Trathan.
"Using satellite images
combined with counts of penguin numbers puts us in a much better
position to monitor future population changes over time."
Estimates put the total number of penguins at between 200,000 and 400,000 breeding pairs.
Posted at 09:38PM Jun 18, 2009
by Kevin P McAuliffe in Astound |