June 2, 2009 -- Scientists looking for lost penguins stumbled upon an effective method: Follow their poop from space. In remote Antarctica, about one-and-a-half times bigger than the United States, researchers have been unable to figure out just where colonies of emperor penguins live and if their population is in peril. It's harder still because emperor penguins, featured in the film, March of the Penguins, breed on sea ice, which scientists say will shrink significantly in the future because of global warming. Because the large penguins stay on the same ice for months, their poop stains make them stand out from space. Scientists at the British Antarctic Survey found this out by accident when they were looking at satellite images of their bases. A reddish-brown streak on the colorless ice was right where they knew a colony was, said survey mapping scientist Peter Fretwell. Related Content:
The stain was penguin poo -- particularly smelly stuff -- and it gave researchers an idea to search for brown stains to find penguins. They found the same telltale trail, usually dark enough to spot from space, all over the continent, said Fretwell by telephone from England. Using satellite data, the scientists found 10 new colonies of penguins, six colonies that had moved from previously mapped positions to new spots and another six that seemed to have disappeared. Overall, 38 colonies were spotted from above, according to Fretwell's paper, "Penguins From Space" in the journal Global Ecology and Biogeography ."It's a very important result scientifically, even though it's a lighthearted method," Fretwell said Monday. Even though Antarctic sea ice hasn't melted so far, scientists predict it to shrink by one-third by the end of the century, potentially threatening the birds, Fretwell said. The research is "incredibly useful," because the only time to see emperors are during breeding in winter when weather makes it nearly impossible to get to the colonies, said longtime penguin researcher William Fraser, who wasn't involved in the study. Fraser noted that salty penguin guano "over time will corrode your boots," adding that he has lost nearly a dozen pairs to poop in 35 years of penguin research. Related Links: Get More NewsSpiders, Scorpions Among World's Oldest CreaturesMany creepy crawlies have been on Earth much longer than previously believed.Blood-Sucking Vampire Bats Sing DuetsWhite-winged vampire bats "harmonize" with separated roost mates.Oldest Hebrew Writing Possibly FoundAncient inscriptions on a 3,000-year-old pottery shard could make history.Rare, Prehistoric-Age Reptile Found in N.Z.A tuatara has been spotted on the New Zealand mainland for the first time in 200 years.Iceman Has No Living RelativesOetzi, the 5,300 year-old frozen mummy, left no living genetic legacy.SLIDE SHOW: Landscapes of TerrorWhat makes a place feel scary? There are scientific explanations.It's Official: People Are Warming the PolesHumans are conclusively to blame for polar warming, say scientists.Eight-Armed Animal Preceded DinosaursWhat may be one of Earth's first animals was no bigger than a coaster and had eight arms.Phoenicians Live on in People's GenesOne in 17 Mediterranean men may be descended from ancient Phoenicians.Pesticides, Fertilizers Linked to Frog DeclineA pesticide is found to promote parasites among amphibians.Hubble Telescope Taking Photos AgainThe Hubble Space Telescope is once again snapping stunning photos of the universe.Andean Mummy Hairs Show Hallucinogen UseScientists find direct evidence of hallucinogenic drug use among ancient Andeans.Opals on Mars Reveal Planet's Long Wet PastOpals found on Mars suggest the planet has been wet for much longer. |
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