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Dynamic model of Lake Chozas (León, NW Spain)—Decrease in eco-exergy from clear to turbid phase due to introduction of exotic crayfish

Author

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  • Marchi, Michela
  • Jørgensen, Sven Erik
  • Bécares, Eloy
  • Corsi, Ilaria
  • Marchettini, Nadia
  • Bastianoni, Simone

Abstract

We developed a dynamic model of the phosphorus cycle in Lake Chozas, a small shallow water body in León (NW Spain). The calibrated model simulated seasonal dynamics of phosphorus concentrations in major components of the lake's ecological network before and after 1997, the year when an invasive allochthonous crustacean, the Louisiana red swamp crayfish (Procambarus clarkii), was introduced into the lake. The shift from clean to turbid phase, due to grazing by crayfish on submerged vegetation, caused a gradual decrease in eco-exergy, reflecting an increase in entropy, related to breakdown of ecosystem internal equilibria. This case study verifies the hypothesis of Marchi et al. (2010) that, after an initial relatively stable state, the allochthonous species may cause an increase in entropy indicating perturbation of the ecosystem.

Suggested Citation

  • Marchi, Michela & Jørgensen, Sven Erik & Bécares, Eloy & Corsi, Ilaria & Marchettini, Nadia & Bastianoni, Simone, 2011. "Dynamic model of Lake Chozas (León, NW Spain)—Decrease in eco-exergy from clear to turbid phase due to introduction of exotic crayfish," Ecological Modelling, Elsevier, vol. 222(16), pages 3002-3010.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:16:p:3002-3010
    DOI: 10.1016/j.ecolmodel.2011.04.016
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    References listed on IDEAS

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    1. Jørgensen, Sven Erik & Ludovisi, Alessandro & Nielsen, Søren Nors, 2010. "The free energy and information embodied in the amino acid chains of organisms," Ecological Modelling, Elsevier, vol. 221(19), pages 2388-2392.
    2. Tiezzi, Enzo & Pulselli, Riccardo Maria, 2008. "An entropic approach to living systems," Ecological Modelling, Elsevier, vol. 216(2), pages 229-231.
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    Cited by:

    1. Kong, Xiang-Zhen & Jørgensen, Sven Erik & He, Wei & Qin, Ning & Xu, Fu-Liu, 2013. "Predicting the restoration effects by a structural dynamic approach in Lake Chaohu, China," Ecological Modelling, Elsevier, vol. 266(C), pages 73-85.
    2. Wu, Zijian & Wu, Xiaofu & Yang, Zhihui & Ouyang, Linnan, 2017. "A simple thermodynamic model for evaluating the ecological restoration effect on a manganese tailing wasteland," Ecological Modelling, Elsevier, vol. 346(C), pages 20-29.
    3. Chen, Quan & Zhao, Qian & Chen, Pimao & Lu, Hongfang, 2018. "Effect of exotic cordgrass Spartina alterniflora on the eco-exergy based thermodynamic health of the macrobenthic faunal community in mangrove wetlands," Ecological Modelling, Elsevier, vol. 385(C), pages 106-113.
    4. Marchi, Michela & Jørgensen, Sven Erik & Bécares, Eloy & Corsi, Ilaria & Marchettini, Nadia & Bastianoni, Simone, 2011. "Resistance and re-organization of an ecosystem in response to biological invasion: Some hypotheses," Ecological Modelling, Elsevier, vol. 222(16), pages 2992-3001.
    5. Kong, Xiangzhen & He, Wei & Liu, Wenxiu & Yang, Bin & Xu, Fuliu & Jørgensen, Sven Erik & Mooij, Wolf M., 2016. "Changes in food web structure and ecosystem functioning of a large, shallow Chinese lake during the 1950s, 1980s and 2000s," Ecological Modelling, Elsevier, vol. 319(C), pages 31-41.

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