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Science 19 December 2003:
Vol. 302. no. 5653, p. 2029
DOI: 10.1126/science.302.5653.2029i
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This Week in Science

The brazil nut is harvested entirely from natural populations of trees in the Amazon basin, and is often held up as an example of a resource that can be harvested sustainably from the tropical forest. Peres et al. (p. 2112; see the news story by Stokstad) gathered data on the size structure of Brazil nut tree populations from 23 sites in the Bolivian, Peruvian, and Brazilian Amazon. Contrary to expectations, the harvesting of nuts over many decades has reduced the recruitment of new seedlings, such that many populations are no longer sustainable.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)