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Linking trophic positions and flow structure constraints in ecological networks: Energy transfer efficiency or topology effect?

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  • Scotti, Marco
  • Bondavalli, Cristina
  • Bodini, Antonio

Abstract

In the present work we investigate whether the distribution of energy flows in ecosystems responds to criteria of trophic organization. We analyzed weighted and unweighted food webs estimating, for each node, trophic position (TP), Shannon's index of inflow diversity (H) and individual contribution to the whole average mutual information (AMI). Finally, we performed the same analysis on simulated webs that were constructed using the following criteria: (a) preserving topology and varying link strength; (b) modifying position of links and their intensities.

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  • Scotti, Marco & Bondavalli, Cristina & Bodini, Antonio, 2009. "Linking trophic positions and flow structure constraints in ecological networks: Energy transfer efficiency or topology effect?," Ecological Modelling, Elsevier, vol. 220(21), pages 3070-3080.
    • Handle: RePEc:eee:ecomod:v:220:y:2009:i:21:p:3070-3080
    DOI: 10.1016/j.ecolmodel.2008.07.034
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    1. Anje-Margriet Neutel & Johan A. P. Heesterbeek & Johan van de Koppel & Guido Hoenderboom & An Vos & Coen Kaldeway & Frank Berendse & Peter C. de Ruiter, 2007. "Reconciling complexity with stability in naturally assembling food webs," Nature, Nature, vol. 449(7162), pages 599-602, October.
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    4. Kevin McCann & Alan Hastings & Gary R. Huxel, 1998. "Weak trophic interactions and the balance of nature," Nature, Nature, vol. 395(6704), pages 794-798, October.
    5. Diego Garlaschelli & Guido Caldarelli & Luciano Pietronero, 2003. "Universal scaling relations in food webs," Nature, Nature, vol. 423(6936), pages 165-168, May.
    6. Richard J. Williams & Neo D. Martinez, 2000. "Simple rules yield complex food webs," Nature, Nature, vol. 404(6774), pages 180-183, March.
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    Cited by:

    1. Yang, Zhifeng & Mao, Xufeng, 2011. "Wetland system network analysis for environmental flow allocations in the Baiyangdian Basin, China," Ecological Modelling, Elsevier, vol. 222(20), pages 3785-3794.

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