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Modeling trophic structure and energy flows in a typical macrophyte dominated shallow lake using the mass balanced model

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  • Jia, Peiqiao
  • Hu, Menghong
  • Hu, Zhongjun
  • Liu, Qigen
  • Wu, Zhen

Abstract

Lake Gehu is located in the southern China and plays a significant role in the local societies. However, Lake Gehu has transferred from macrophyte-dominated to phytoplankton-dominated status in the last decades, and it is facing algal bloom problems. In order to restore the damaged ecosystem and characterize the need for developing an ecosystem-based management strategy, a mass balance trophic model of Lake Gehu was constructed by Ecopath with Ecosim software. Trophic structure and energy flows during 1986–1989 were analyzed. Results showed the primary production accounted for 90.93% of the total system production and macrophyte production accounted for 87.43%. Food chains in the lake included two main pathways: the grazing pathway and the detrital pathway. Primary production/respiration ratio (Pp/R), primary production/biomass ratio (Pp/B), Finn's index, system omnivory index (SOI), connectance index (CI) of Gehu ecosystem were 2.761, 1.76, 14.76, 0.086, 0.208, respectively. The present study revealed that Lake Gehu was a relatively mature ecosystem during the study period and provided a comparable database for further study.

Suggested Citation

  • Jia, Peiqiao & Hu, Menghong & Hu, Zhongjun & Liu, Qigen & Wu, Zhen, 2012. "Modeling trophic structure and energy flows in a typical macrophyte dominated shallow lake using the mass balanced model," Ecological Modelling, Elsevier, vol. 233(C), pages 26-30.
    • Handle: RePEc:eee:ecomod:v:233:y:2012:i:c:p:26-30
    DOI: 10.1016/j.ecolmodel.2012.02.026
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    References listed on IDEAS

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    1. Liu, Qi-Gen & Chen, Yong & Li, Jia-Le & Chen, Li-Qiao, 2007. "The food web structure and ecosystem properties of a filter-feeding carps dominated deep reservoir ecosystem," Ecological Modelling, Elsevier, vol. 203(3), pages 279-289.
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    3. Stewart, Thomas. J. & Sprules, W. Gary, 2011. "Carbon-based balanced trophic structure and flows in the offshore Lake Ontario food web before (1987–1991) and after (2001–2005) invasion-induced ecosystem change," Ecological Modelling, Elsevier, vol. 222(3), pages 692-708.
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    3. Shan, Kun & Li, Lin & Wang, Xiaoxiao & Wu, Yanlong & Hu, Lili & Yu, Gongliang & Song, Lirong, 2014. "Modelling ecosystem structure and trophic interactions in a typical cyanobacterial bloom-dominated shallow Lake Dianchi, China," Ecological Modelling, Elsevier, vol. 291(C), pages 82-95.
    4. 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.
    5. Chea, Ratha & Guo, Chuanbo & Grenouillet, Gaël & Lek, Sovan, 2016. "Toward an ecological understanding of a flood-pulse system lake in a tropical ecosystem: Food web structure and ecosystem health," Ecological Modelling, Elsevier, vol. 323(C), pages 1-11.
    6. Ortiz, Marco & Berrios, Fernando & Campos, Leonardo & Uribe, Roberto & Ramirez, Alejandro & Hermosillo-Núñez, Brenda & González, Jorge & Rodriguez-Zaragoza, Fabián, 2015. "Mass balanced trophic models and short-term dynamical simulations for benthic ecological systems of Mejillones and Antofagasta bays (SE Pacific): Comparative network structure and assessment of human ," Ecological Modelling, Elsevier, vol. 309, pages 153-162.
    7. Liping Zhang & Shiwen Zhang & Yajie Huang & Meng Cao & Yuanfang Huang & Hongyan Zhang, 2016. "Exploring an Ecologically Sustainable Scheme for Landscape Restoration of Abandoned Mine Land: Scenario-Based Simulation Integrated Linear Programming and CLUE-S Model," IJERPH, MDPI, vol. 13(4), pages 1-20, March.

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