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Science 20 June 1997:
Vol. 276. no. 5320, pp. 1791 - 1792
DOI: 10.1126/science.276.5320.1791
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Research News

EVOLUTIONARY BIOLOGY:
Life on the Edge: Rainforest Margins May Spawn Species

Martin Enserink

Tropical rainforests have become the icon of biodiversity, but a study on page 1855 suggests that the often-overlooked transition zone between rainforest and savannah may be the place where new species arise. The study of small birds in Cameroon also provides rare field data to support a controversial theory of speciation, showing that migration between populations may not be a barrier to the birth of new species.

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