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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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Probing Diversity's Complexity
19 July 2012 2:16 pm
Rainforests may be the conservationist's poster child, but they fall short as models of the true complexity of our planet's biodiversity. So says Peter Jørgensen, a botanist at the Missouri Botanical Garden, whose work promises to shake up our understanding of the distribution of tree species in tropical South America. The Madidi Project charts the changes in tree communities in the mountains of Bolivia growing along an elevation gradient that plunges from above 6000 meters to 180 meters above sea level. By identifying all trees at least 10 centimeters in diameter within hundreds of research plots along this gradient, Jørgensen and his colleagues have built a database that allows them to examine spatial patterns of diversity in ways not possible from studies limited to rainforests, which tend to be comparatively homogeneous because they are confined to the lowlands.