Journal of Plant Sciences

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Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir

Received: 02 December 2016    Accepted: 10 December 2016    Published: 09 January 2017
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Abstract

This study aimed to evaluate the degree of contribution of limnological variables to explaining ecological processes involving aquatic macrophytes after an event of water level rise (WLR) of an artificial lake (Cursai Reservoir - CR), located in northeastern Brazil. Initially we tested the hypotheses that limnological characteristics, and species richness and composition of aquatic macrophytes, would change post-WLR. Once these hypotheses were confirmed, we evaluated the degree of influence (direct or indirect) of the variables to structuring the community of aquatic macrophytes in CR. We carried out four pre-WLR sampling expeditions and four post-WLR sampling expeditions to a permanent plot of 5 m x 40 m, wherein we assessed species richness, composition and cover, and measured 12 limnological variables. We used partial correlation analysis to evaluate the degree of contribution of the limnological changes to post-WLR structuring of the aquatic macrophyte community. The results pointed to an indirect correlation between the limnological changes and the structuring of the aquatic macrophyte community derived from the WLR, with interespecific interactions being the determining factors in structuring. The cover and species composition in the post-WLR period confirmed this inference. In this period, we found a reduction in cover of the weeds Eichhornia crassipes, Paspalidium geminatum and Salvinia auriculata, new records of Egeria densa, Ludwigia leptocarpa and Ludwigia helminthorriza, and an increase in cover of Cyperus odoratus and Oxycaryum cubense. We consider that fast WLRs in artificial lakes, such as occurred in CR, can be considered intermediate disturbances. In such cases, the ecological processes involving the aquatic macrophytes could be explained by the intermediate disturbance hypothesis (IDH), which reinforces interespecific interactions (moreover competition) as being the restructuring factor.

DOI 10.11648/j.jps.20160406.18
Published in Journal of Plant Sciences (Volume 4, Issue 6, December 2016)
Page(s) 195-201
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Aquatic Plant, Community Ecology, IDH

References
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Author Information
  • Center of Ecology and Environmental Monitoring, Federal University of S?o Francisco Valley, Petrolina, Pernambuco, Brazil

  • Departament of Botany, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil

  • Departament of Fisheries and Aquaculture, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil

  • Departament of Botany, Federal Rural University of Pernambuco, Recife, Pernambuco, Brazil

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  • APA Style

    Edson Gomes de Moura Júnior, Arnildo Pott, William Severi, Carmen Silvia Zickel. (2017). Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir. Journal of Plant Sciences, 4(6), 195-201. https://doi.org/10.11648/j.jps.20160406.18

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    ACS Style

    Edson Gomes de Moura Júnior; Arnildo Pott; William Severi; Carmen Silvia Zickel. Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir. J. Plant Sci. 2017, 4(6), 195-201. doi: 10.11648/j.jps.20160406.18

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    AMA Style

    Edson Gomes de Moura Júnior, Arnildo Pott, William Severi, Carmen Silvia Zickel. Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir. J Plant Sci. 2017;4(6):195-201. doi: 10.11648/j.jps.20160406.18

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  • @article{10.11648/j.jps.20160406.18,
      author = {Edson Gomes de Moura Júnior and Arnildo Pott and William Severi and Carmen Silvia Zickel},
      title = {Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir},
      journal = {Journal of Plant Sciences},
      volume = {4},
      number = {6},
      pages = {195-201},
      doi = {10.11648/j.jps.20160406.18},
      url = {https://doi.org/10.11648/j.jps.20160406.18},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.jps.20160406.18},
      abstract = {This study aimed to evaluate the degree of contribution of limnological variables to explaining ecological processes involving aquatic macrophytes after an event of water level rise (WLR) of an artificial lake (Cursai Reservoir - CR), located in northeastern Brazil. Initially we tested the hypotheses that limnological characteristics, and species richness and composition of aquatic macrophytes, would change post-WLR. Once these hypotheses were confirmed, we evaluated the degree of influence (direct or indirect) of the variables to structuring the community of aquatic macrophytes in CR. We carried out four pre-WLR sampling expeditions and four post-WLR sampling expeditions to a permanent plot of 5 m x 40 m, wherein we assessed species richness, composition and cover, and measured 12 limnological variables. We used partial correlation analysis to evaluate the degree of contribution of the limnological changes to post-WLR structuring of the aquatic macrophyte community. The results pointed to an indirect correlation between the limnological changes and the structuring of the aquatic macrophyte community derived from the WLR, with interespecific interactions being the determining factors in structuring. The cover and species composition in the post-WLR period confirmed this inference. In this period, we found a reduction in cover of the weeds Eichhornia crassipes, Paspalidium geminatum and Salvinia auriculata, new records of Egeria densa, Ludwigia leptocarpa and Ludwigia helminthorriza, and an increase in cover of Cyperus odoratus and Oxycaryum cubense. We consider that fast WLRs in artificial lakes, such as occurred in CR, can be considered intermediate disturbances. In such cases, the ecological processes involving the aquatic macrophytes could be explained by the intermediate disturbance hypothesis (IDH), which reinforces interespecific interactions (moreover competition) as being the restructuring factor.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Water Level Rise Induced Limnological Changes Indirectly Influencing the Structure of Aquatic Macrophyte Communities in a Tropical Reservoir
    AU  - Edson Gomes de Moura Júnior
    AU  - Arnildo Pott
    AU  - William Severi
    AU  - Carmen Silvia Zickel
    Y1  - 2017/01/09
    PY  - 2017
    N1  - https://doi.org/10.11648/j.jps.20160406.18
    DO  - 10.11648/j.jps.20160406.18
    T2  - Journal of Plant Sciences
    JF  - Journal of Plant Sciences
    JO  - Journal of Plant Sciences
    SP  - 195
    EP  - 201
    PB  - Science Publishing Group
    SN  - 2331-0731
    UR  - https://doi.org/10.11648/j.jps.20160406.18
    AB  - This study aimed to evaluate the degree of contribution of limnological variables to explaining ecological processes involving aquatic macrophytes after an event of water level rise (WLR) of an artificial lake (Cursai Reservoir - CR), located in northeastern Brazil. Initially we tested the hypotheses that limnological characteristics, and species richness and composition of aquatic macrophytes, would change post-WLR. Once these hypotheses were confirmed, we evaluated the degree of influence (direct or indirect) of the variables to structuring the community of aquatic macrophytes in CR. We carried out four pre-WLR sampling expeditions and four post-WLR sampling expeditions to a permanent plot of 5 m x 40 m, wherein we assessed species richness, composition and cover, and measured 12 limnological variables. We used partial correlation analysis to evaluate the degree of contribution of the limnological changes to post-WLR structuring of the aquatic macrophyte community. The results pointed to an indirect correlation between the limnological changes and the structuring of the aquatic macrophyte community derived from the WLR, with interespecific interactions being the determining factors in structuring. The cover and species composition in the post-WLR period confirmed this inference. In this period, we found a reduction in cover of the weeds Eichhornia crassipes, Paspalidium geminatum and Salvinia auriculata, new records of Egeria densa, Ludwigia leptocarpa and Ludwigia helminthorriza, and an increase in cover of Cyperus odoratus and Oxycaryum cubense. We consider that fast WLRs in artificial lakes, such as occurred in CR, can be considered intermediate disturbances. In such cases, the ecological processes involving the aquatic macrophytes could be explained by the intermediate disturbance hypothesis (IDH), which reinforces interespecific interactions (moreover competition) as being the restructuring factor.
    VL  - 4
    IS  - 6
    ER  - 

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