Biodiversity may represent a form of biological insurance against the loss or poor performance of selected species1. If this is the case, then communities with larger numbers of species should be more predictable with respect to properties such as local biomass2. That is, larger numbers of species should enhance ecosystem reliability, where reliability refers to the probability that a system will provide a consistent level of performance over a given unit of time3. The validity of this hypothesis has important ecological, management and economic implications given the large-scale substitution of diverse natural ecosystems with less diverse managed systems4. No experimental evidence, however, has supported this hypothesis5. To test this hypothesis we established replicated microbial microcosms with varying numbers of species per functional group. We found that as the number of species per functional group increased, replicate communities were more consistent in biomass and density measures. These results suggest that redundancy (in the sense of having multiple species per functional group6,7,8) is a valuable commodity, and that the provision of adequate redundancy may be one reason for preserving biodiversity.
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Folke, C., Holling, C. S. & Perrings, C. Biological diversity, ecosystems and the human scale. Ecol. Applic. 6, 1018–1024 (1996).
May, R. M. Stability and Complexity in Model Ecosystems (Princeton Univ. Press, Princeton, (1974)).
Naeem, S. Species redundancy and ecosystem reliability. Cons. Biol. (in the press).
Imhoff, M. L. Mapping human impacts on the global biosphere. BioScience 44, 598 (1994).
Heywood, V. H. Global Biodiversity Assessment (UNEP and Cambridge Univ. Press, Cambridge, (1995)).
Gitay, H., Bastow, W. & Lee, W. G. Species redundancy: a redundant concept? J. Ecol. 84, 121–124 (1996).
Walker, B. H. Biological diversity and ecological redundancy. Cons. Biol. 6, 18–23 (1992).
Lawton, J. H. & Brown, V. K. in Biodiversity and Ecosystem Function (eds Schulze, E. D. & Mooney, H. A.) 255–270 (Springer, New York, (1993)).
Tilman, D. Biodiversity: population versus ecosystem stability. Ecology 77, 350–363 (1996).
Cowling, R. M., Mustart, P. J., Laurie, H. & Richards, M. B. Species diversity; functional diversity and functional redundancy in fynbos communities. S. Afr. J. Sci. 90, 333–337 (1994).
Beare, M. H., Coleman, D. C., Crossley, D. A., Hendrix, P. F. & Odum, E. P. Ahierarchical approach to evaluating the significance of soil biodiversity to biogeochemical cycling. Plant Soil 170, 5–122 (1995).
Feinsinger, P., Wolfe, J. A. & Swarm, L. A. Island ecology: reduced hummingbird diversity and the pollination of plants, Trinidad and Tobago, West Indies. Ecology 63, 494–506 (1982).
Körner, C. in Biodiversity and Ecosystem Functioning (eds Schulze, E.-D. & Mooney, H. A.) 117–139 (Springer, Berlin, (1993)).
Christiansen, N. L. J. in The Ecological Basis of Conservation (eds Pickett, S. T. A., Ostfeld, R. S., Schachak, M. & Likens, G. E.) 167–186 (Chapman and Hall, New York, (1997)).
Baruch, Z. et al. in Biodiversity and Savanna Ecosystem Processes Vol. 121(eds Solbrig, O. T., Medina, E. & Silva, J. F.) 176–194 (Springer, Berlin, (1996)).
Harte, J. & Kinzig, A. P. Mutualism and competition between plants and decomposers: implications for nutrient allocation in ecosystems. Am. Nat. 141, 829–846 (1993).
Drake, J. A. Community-assembly mechanics and the structure of an experimental species ensemble. Am. Nat. 137, 1–26 (1991).
Power, M. E. et al. Challenges in the quest for keystones. BioScience 46, 609–620 (1996).
Daily, G. C. Nature's Services (Island Press, Washington DC, (1997)).
Costanza, R. et al. The value of the world's ecosystem services and natural capital. Nature 387, 253–260 (1997).
Lawler, S. P. & Morin, P. J. Food web architecture and population dynamics in laboratory microcosms of protists. Am. Nat. 141, 675–686 (1993).
Wetzel, R. G. & Likens, G. E. Limnological Analyses (Springer, Berlin, Germany, (1991)).
Porter, K. G. & Feig, Y. S. The use of DAPI for identifying and counting aquatic microflora. Limnol. Oceanogr. 25, 943–948 (1980).
We thank J. McGrady-Steed, P. Morin, B. Sterner, D. Tilman and S. Tjossem for critical evaluations of this work, and the McKnight Land-Grant Professorship and NSF for support.
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Naeem, S., Li, S. Biodiversity enhances ecosystem reliability. Nature 390, 507–509 (1997). https://doi.org/10.1038/37348
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