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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
- 6 March 2014 1:04 pm , Vol. 343 , #6175
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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spots, reported today in the Journal of Vegetation Science, emerged from researchers scanning millions of published and unpublished plant surveys in different-sized plots.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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