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Science 29 September 2006:
Vol. 313. no. 5795, p. 1887
DOI: 10.1126/science.1129628
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Technical Comments

Response to Comment on "Asymmetric Coevolutionary Networks Facilitate Biodiversity Maintenance"

Jordi Bascompte,1* Pedro Jordano,1 Jens M. Olesen2

Mutualistic networks are characterized by weak and asymmetric interactions, which a simple model predicts will facilitate species coexistence. Holland et al. propose a more complex model and argue that coexistence is independent of mutualism strength. However, we show that mutualism strength still plays an important role in their model and that it significantly decreases with species richness as predicted.

1 Integrative Ecology Group, Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas, Apartado 1056, E-41080 Sevilla, Spain.
2 Department of Ecology and Genetics, University of Aarhus, Ny Munkegade, Building 540, DK-8000 Aarhus, Denmark.

* To whom correspondence should be addressed. E-mail: bascompte{at}ebd.csic.es

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