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.
Published in | Journal of Plant Sciences (Volume 4, Issue 6) |
DOI | 10.11648/j.jps.20160406.18 |
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. |
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Copyright © The Author(s), 2017. Published by Science Publishing Group |
Aquatic Plant, Community Ecology, IDH
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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
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
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
@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://article.sciencepublishinggroup.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} }
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 -