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The Fourth Dimension of Life: Fractal Geometry and Allometric Scaling of Organisms

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Author Info
Geoffrey B. West
James H. Brown
Brian J. Enquist
Abstract

The existence of fractal-like networks effectively endows life with an additional fourth spatial dimension. This is the origin of quarter-power scaling which is so pervasive in biology. Organisms have evolved hierarchical networks which terminate in invariant units, such as capillaries, leaves, mitochondria, and oxidase molecules, which are independent of organism size. Natural selection has tended to maximize both metabolic capacity by maximizing the scaling of exchange surface areas, and internal efficiency by minimizing the scaling of transport distances and times. These design principles are independent of detailed dynamics and explicit models and should apply to virtually all organisms.

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Publisher Info
Paper provided by Santa Fe Institute in its series Working Papers with number 99-07-047.

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Date of creation: Jul 1999
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Handle: RePEc:wop:safiwp:99-07-047

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Related research
Keywords: Allometry; fractal geometry; scaling in biology;

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  1. Carl-Johan Dalgaard & Holger Strulik, 2007. "Rediscovering the Solow Model: An Energy Network Approach," Discussion Papers 07-09, University of Copenhagen. Department of Economics. [Downloadable!]
  2. Dalgaard, Carl-Johan & Strulik, Holger, 2008. "Energy Distribution, Power Laws, and Economic Growth," Diskussionspapiere der Wirtschaftswissenschaftlichen Fakultät der Universität Hannover dp-385, Universität Hannover, Wirtschaftswissenschaftliche Fakultät. [Downloadable!]
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This page was last updated on 2009-11-20.


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