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10 April 2014 11:44 am ,
Vol. 344 ,
The Pyrenean ibex, an impressive mountain goat that lived in the central Pyrenees in Spain, went extinct in 2000. But a...
Tight budgets are forcing NASA to consider turning off one or more planetary science projects that have completed their...
Ebola is not a stranger to West Africa—an outbreak in the 1990s killed chimpanzees and sickened one researcher. But the...
In an as-yet-unpublished report, an international panel of geoscientists has concluded that a pair of deadly...
Tropical disease experts tried and failed before to eradicate yaws, a rare disfiguring disease of poor countries. Now,...
Since 2002, researchers have reported that agricultural communities in the hot and humid Pacific Coast of Central...
Balkan endemic kidney disease surfaced in the 1950s and for decades defied attempts to finger the cause. It occurred...
- 10 April 2014 11:44 am , Vol. 344 , #6180
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ScienceShot: Grazed Grasslands Are Biodiversity Hot Spots
15 March 2012 8:01 pm
Talk about packing it in. Researchers have found 89 plant species crammed into a single square meter of mountain grassland in central Argentina, including many grasses and small flowers. Several meadows in Romania and the Czech Republic were nearly as rich. These biodiversity hot spots, reported today in the Journal of Vegetation Science, emerged from researchers scanning millions of published and unpublished plant surveys in different-sized plots. Grazing animals, such as cows and sheep, help keep these small plots of land rich in species by removing the tops of plants, thereby allowing more individual plants access to light, the researchers say. Such hot spots used to be a lot more common, but now, with fewer free-ranging livestock, they're quite rare.
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