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News | Archive (February 2007)
Unusual call of rare Sumatran ground cuckoo recorded for first time
— 27 Feb 2007 | BiologyA team of biologists with the New York-based Wildlife Conservation Society (WCS) have recorded for the first time the call of the extremely rare Sumatran ground cuckoo, found only on the island of Sumatra in Indonesia…
Nectar is not a simple soft drink
— 27 Feb 2007 | BiologyThe sugar-containing nectar secreted by plants and consumed by pollinators shares a number of similarities to fitness drinks, including ingredients such as amino acids and vitamins. In addition to these components, nectar can also contain secondary metabolites such as the alkaloid nicotine and other toxic compounds…
How do marine turtles return to the same beach to lay their eggs?
— 26 Feb 2007 | BiologyMarine turtles almost always return to the same beach to lay their eggs. The egg-laying sites are often far from the feeding areas and the females cross several hundred kilometres of ocean with no visual landmarks. How do they manage to return to the same spot? A study by Simon Benhamou of the Centre for Functional and Evolutionary Ecology at Montpellier, France, together with other groups, shows that the marine turtles use a relatively simple navigation system involving the earths magnetic field…
Antarctic marine explorers reveal biological changes
— 26 Feb 2007 | BiologyOnce roofed by ice for millennia, a 10.000 square km portion of the Antarctic seabed represents a true frontier, one of Earth most pristine marine ecosystems, made suddenly accessible to exploration by the collapse of the Larsen A and B ice shelves, 12 and five years ago respectively. Now it has yielded secrets to some 52 marine explorers who accomplished the seabeds first comprehensive biological survey during a 10-week expedition aboard the German research vessel Polarstern…
Lizards shout against a noisy background to get points across
— 23 Feb 2007 | BiologyMale Anole lizards signal ownership of their territory by sitting up on a tree trunk, bobbing their heads up and down and extending a colourful throat pouch. They can spot a rival lizard up to 25 meters away, says National Science Foundation (NSF)-funded biologist Terry Ord of the University of California at Davis…
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Scientists get best view yet of infant stars at feeding time
Svilen Bobev receives ACA Early Career Award