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Phys. Rev. Lett. 101, 078103 (2008) [4 pages]

Neutral Clustering in a Simple Experimental Ecological Community

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B. Houchmandzadeh
CNRS & Grenoble Universités, Lab. Spectrométrie Physique, BP87, 38402 St-Martin d’Hères Cedex, France

Received 27 March 2008; published 13 August 2008

The spatial distribution of most species in ecosystems is nonuniform. New theories try to explain patterns observed at multiple scales in terms of neutral processes such as birth, death, and migration. We have devised an experimental, niche-free ecosystem where the amplitude of neutral patchiness can be precisely measured. Spatial distribution of species in this system is extremely clustered. We demonstrate that this clustering is entirely attributed to neutral causes and show that the most basic properties of life can provoke intricate spatial structures without clues from the environment.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.078103
DOI:
10.1103/PhysRevLett.101.078103
PACS:
87.23.Cc, 05.40.−a, 89.75.Fb