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Science 9 April 2004:
Vol. 304. no. 5668, p. 167
DOI: 10.1126/science.304.5668.167k
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Ecologists have generally assumed that positive correlations between species diversity and the diversity of their resources are mainly the result of specialization by particular species on particular resources. Using twig-nesting ant species in a tropical agroecosystem, Armbrecht et al. (p. 284) found that, even with no apparent specialization, diversity of resources still promotes diversity of consumers or users of those resources. Thus, diversity at one level may promote diversity at another level independently of any niche specialization. Resource diversity seems to generate yet-to-be-determined emergent properties that act to diversify the users of those resources.




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