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Modeling species fitness in competitive environments

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  • Šajna, Nina
  • Kušar, Primož

Abstract

Using a model of resource acquisition, we studied species competition in a case where resources limit population growth. Our model is based on calculations of the distribution of individuals of single or multiple species over consumed resources. Calculations show that, as equilibrium is reached in purely resource competitive systems, the density of resources is lowered to the lowest sustainable level, directly leading to low levels of fitness among species. In the case of competition between species with different lowest sustainable levels, the density of the more successful must be limited by some cause other than the resource in question for all species to coexist. We explore two cases of such coexistence.

Suggested Citation

  • Šajna, Nina & Kušar, Primož, 2014. "Modeling species fitness in competitive environments," Ecological Modelling, Elsevier, vol. 275(C), pages 31-36.
    • Handle: RePEc:eee:ecomod:v:275:y:2014:i:c:p:31-36
    DOI: 10.1016/j.ecolmodel.2013.12.007
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    1. Jef Huisman & Franz J. Weissing, 1999. "Biodiversity of plankton by species oscillations and chaos," Nature, Nature, vol. 402(6760), pages 407-410, November.
    2. Preuss, Thomas Günter & Hammers-Wirtz, Monika & Hommen, Udo & Rubach, Mascha Nadine & Ratte, Hans Toni, 2009. "Development and validation of an individual based Daphnia magna population model: The influence of crowding on population dynamics," Ecological Modelling, Elsevier, vol. 220(3), pages 310-329.
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    Cited by:

    1. Han, Zhi-Quan & Liu, Tong & Liu, Hua-Feng & Hao, Xiao-Ran & Chen, Wei & Li, Bai-Lian, 2019. "Derivation of species interactions strength in a plant community with game theory," Ecological Modelling, Elsevier, vol. 394(C), pages 27-33.

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