Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria

Edward J. B.; Adewumi A. A.; Idowu E. O.; Oso J. A.; Adeoba E. A.; Olofintoye L. K.

doi:doi:10.11648/j.ijema.20150306.17

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Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria

Edward J. B., Adewumi A. A., Idowu E. O., Oso J. A., Adeoba E. A., Olofintoye L. K.

Published in International Journal of Environmental Monitoring and Analysis (Volume 3, Issue 6)

Received: 22 November 2015 Accepted: 3 December 2015 Published: 4 January 2016

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Abstract

Benthic organisms are generally considered to be good indicators of environmental conditions of aquatic ecosystem. The present study was undertaken to study the pre-impoundment composition, abundance, distribution and diversity of the macroinvertebrate fauna of Elemi River, Ado-Ekiti, while using these organisms as water-quality bioindicators. Physicochemical, metals and benthic samples were collected biweekly at four stations between April –July, 2015, using standard methods of APHA (1998). The mean values of triplicate samples of physicochemical parameters include pH (6.82±0.06), temperature (27.05°C ± 4.35), TDS (0.07 ± 0.0001), DO (11.15 ± 1.88), BOD (5.8 ± 0.71), NO₃ (57.08 ± 6.48), SO₄ (76.14 ± 10.4). For the metals, the mean values are Pb (0.01 ± 0.0001), Cr (0.21 ± 0.04), Cu (0.07 ± 0.003), Mg (152.68 ± 79.5), Zn (2.05 ± 5.19), and Fe (1.98 ± 0.21). When compared with the WHO permissible standards for freshwaters, DO, BOD and NO₃ had mean values that were significantly higher than the WHO standards for drinking and agricultural purposes. Also, metals including Cr, Mg, Zn, and Fe had mean values significantly higher than the WHO standards. Seven families of macroinvertebrates representing five orders of Mollusca (66.6%), Coleoptera (14.6%), Plecoptera (12.7%), Hemiptera (4.3%), and Tricoptera (1.8%) were recorded during the period of study. Of the total collected macroinvertebrates, insects comprised only 33.4%, but they are more diverse compared with the gastropods which made up the highest (66.6%) percentage, but are less diverse. Their high abundance coupled with high concentrations of some physicochemical parameters indicates high impact of anthropogenic activities and may result into high organic pollution of the river. Elemi River thus experiences degradation as it flows downstream and benthic macroinvertebrates can serve as a good biological indicator to monitor the river health.

Published in	International Journal of Environmental Monitoring and Analysis (Volume 3, Issue 6)
DOI	10.11648/j.ijema.20150306.17
Page(s)	425-434
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), 2016. Published by Science Publishing Group

Keywords

Elemi River, Physicochemical Parameters, Macroinvertebrates, Pre-impoundment, Organic Pollution

References

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APA Style

Edward J. B., Adewumi A. A., Idowu E. O., Oso J. A., Adeoba E. A., et al. (2016). Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. International Journal of Environmental Monitoring and Analysis, 3(6), 425-434. https://doi.org/10.11648/j.ijema.20150306.17

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ACS Style

Edward J. B.; Adewumi A. A.; Idowu E. O.; Oso J. A.; Adeoba E. A., et al. Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. Int. J. Environ. Monit. Anal. 2016, 3(6), 425-434. doi: 10.11648/j.ijema.20150306.17

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AMA Style

Edward J. B., Adewumi A. A., Idowu E. O., Oso J. A., Adeoba E. A., et al. Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. Int J Environ Monit Anal. 2016;3(6):425-434. doi: 10.11648/j.ijema.20150306.17

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@article{10.11648/j.ijema.20150306.17,
  author = {Edward J. B. and Adewumi A. A. and Idowu E. O. and Oso J. A. and Adeoba E. A. and Olofintoye L. K.},
  title = {Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria},
  journal = {International Journal of Environmental Monitoring and Analysis},
  volume = {3},
  number = {6},
  pages = {425-434},
  doi = {10.11648/j.ijema.20150306.17},
  url = {https://doi.org/10.11648/j.ijema.20150306.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijema.20150306.17},
  abstract = {Benthic organisms are generally considered to be good indicators of environmental conditions of aquatic ecosystem. The present study was undertaken to study the pre-impoundment composition, abundance, distribution and diversity of the macroinvertebrate fauna of Elemi River, Ado-Ekiti, while using these organisms as water-quality bioindicators. Physicochemical, metals and benthic samples were collected biweekly at four stations between April –July, 2015, using standard methods of APHA (1998). The mean values of triplicate samples of physicochemical parameters include pH (6.82±0.06), temperature (27.05°C ± 4.35), TDS (0.07 ± 0.0001), DO (11.15 ± 1.88), BOD (5.8 ± 0.71), NO3 (57.08 ± 6.48), SO4 (76.14 ± 10.4). For the metals, the mean values are Pb (0.01 ± 0.0001), Cr (0.21 ± 0.04), Cu (0.07 ± 0.003), Mg (152.68 ± 79.5), Zn (2.05 ± 5.19), and Fe (1.98 ± 0.21). When compared with the WHO permissible standards for freshwaters, DO, BOD and NO3 had mean values that were significantly higher than the WHO standards for drinking and agricultural purposes. Also, metals including Cr, Mg, Zn, and Fe had mean values significantly higher than the WHO standards. Seven families of macroinvertebrates representing five orders of Mollusca (66.6%), Coleoptera (14.6%), Plecoptera (12.7%), Hemiptera (4.3%), and Tricoptera (1.8%) were recorded during the period of study. Of the total collected macroinvertebrates, insects comprised only 33.4%, but they are more diverse compared with the gastropods which made up the highest (66.6%) percentage, but are less diverse. Their high abundance coupled with high concentrations of some physicochemical parameters indicates high impact of anthropogenic activities and may result into high organic pollution of the river. Elemi River thus experiences degradation as it flows downstream and benthic macroinvertebrates can serve as a good biological indicator to monitor the river health.},
 year = {2016}
}

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TY  - JOUR
T1  - Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria
AU  - Edward J. B.
AU  - Adewumi A. A.
AU  - Idowu E. O.
AU  - Oso J. A.
AU  - Adeoba E. A.
AU  - Olofintoye L. K.
Y1  - 2016/01/04
PY  - 2016
N1  - https://doi.org/10.11648/j.ijema.20150306.17
DO  - 10.11648/j.ijema.20150306.17
T2  - International Journal of Environmental Monitoring and Analysis
JF  - International Journal of Environmental Monitoring and Analysis
JO  - International Journal of Environmental Monitoring and Analysis
SP  - 425
EP  - 434
PB  - Science Publishing Group
SN  - 2328-7667
UR  - https://doi.org/10.11648/j.ijema.20150306.17
AB  - Benthic organisms are generally considered to be good indicators of environmental conditions of aquatic ecosystem. The present study was undertaken to study the pre-impoundment composition, abundance, distribution and diversity of the macroinvertebrate fauna of Elemi River, Ado-Ekiti, while using these organisms as water-quality bioindicators. Physicochemical, metals and benthic samples were collected biweekly at four stations between April –July, 2015, using standard methods of APHA (1998). The mean values of triplicate samples of physicochemical parameters include pH (6.82±0.06), temperature (27.05°C ± 4.35), TDS (0.07 ± 0.0001), DO (11.15 ± 1.88), BOD (5.8 ± 0.71), NO3 (57.08 ± 6.48), SO4 (76.14 ± 10.4). For the metals, the mean values are Pb (0.01 ± 0.0001), Cr (0.21 ± 0.04), Cu (0.07 ± 0.003), Mg (152.68 ± 79.5), Zn (2.05 ± 5.19), and Fe (1.98 ± 0.21). When compared with the WHO permissible standards for freshwaters, DO, BOD and NO3 had mean values that were significantly higher than the WHO standards for drinking and agricultural purposes. Also, metals including Cr, Mg, Zn, and Fe had mean values significantly higher than the WHO standards. Seven families of macroinvertebrates representing five orders of Mollusca (66.6%), Coleoptera (14.6%), Plecoptera (12.7%), Hemiptera (4.3%), and Tricoptera (1.8%) were recorded during the period of study. Of the total collected macroinvertebrates, insects comprised only 33.4%, but they are more diverse compared with the gastropods which made up the highest (66.6%) percentage, but are less diverse. Their high abundance coupled with high concentrations of some physicochemical parameters indicates high impact of anthropogenic activities and may result into high organic pollution of the river. Elemi River thus experiences degradation as it flows downstream and benthic macroinvertebrates can serve as a good biological indicator to monitor the river health.
VL  - 3
IS  - 6
ER  -

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Author Information

Edward J. B.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria
Adewumi A. A.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria
Idowu E. O.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria
Oso J. A.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria
Adeoba E. A.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria
Olofintoye L. K.

Dept. of Zoology, Faculty of Science, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria

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APA Style

Edward J. B., Adewumi A. A., Idowu E. O., Oso J. A., Adeoba E. A., et al. (2016). Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. International Journal of Environmental Monitoring and Analysis, 3(6), 425-434. https://doi.org/10.11648/j.ijema.20150306.17

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ACS Style

Edward J. B.; Adewumi A. A.; Idowu E. O.; Oso J. A.; Adeoba E. A., et al. Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. Int. J. Environ. Monit. Anal. 2016, 3(6), 425-434. doi: 10.11648/j.ijema.20150306.17

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AMA Style

Edward J. B., Adewumi A. A., Idowu E. O., Oso J. A., Adeoba E. A., et al. Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria. Int J Environ Monit Anal. 2016;3(6):425-434. doi: 10.11648/j.ijema.20150306.17

Copy | Download

@article{10.11648/j.ijema.20150306.17,
  author = {Edward J. B. and Adewumi A. A. and Idowu E. O. and Oso J. A. and Adeoba E. A. and Olofintoye L. K.},
  title = {Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria},
  journal = {International Journal of Environmental Monitoring and Analysis},
  volume = {3},
  number = {6},
  pages = {425-434},
  doi = {10.11648/j.ijema.20150306.17},
  url = {https://doi.org/10.11648/j.ijema.20150306.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijema.20150306.17},
  abstract = {Benthic organisms are generally considered to be good indicators of environmental conditions of aquatic ecosystem. The present study was undertaken to study the pre-impoundment composition, abundance, distribution and diversity of the macroinvertebrate fauna of Elemi River, Ado-Ekiti, while using these organisms as water-quality bioindicators. Physicochemical, metals and benthic samples were collected biweekly at four stations between April –July, 2015, using standard methods of APHA (1998). The mean values of triplicate samples of physicochemical parameters include pH (6.82±0.06), temperature (27.05°C ± 4.35), TDS (0.07 ± 0.0001), DO (11.15 ± 1.88), BOD (5.8 ± 0.71), NO3 (57.08 ± 6.48), SO4 (76.14 ± 10.4). For the metals, the mean values are Pb (0.01 ± 0.0001), Cr (0.21 ± 0.04), Cu (0.07 ± 0.003), Mg (152.68 ± 79.5), Zn (2.05 ± 5.19), and Fe (1.98 ± 0.21). When compared with the WHO permissible standards for freshwaters, DO, BOD and NO3 had mean values that were significantly higher than the WHO standards for drinking and agricultural purposes. Also, metals including Cr, Mg, Zn, and Fe had mean values significantly higher than the WHO standards. Seven families of macroinvertebrates representing five orders of Mollusca (66.6%), Coleoptera (14.6%), Plecoptera (12.7%), Hemiptera (4.3%), and Tricoptera (1.8%) were recorded during the period of study. Of the total collected macroinvertebrates, insects comprised only 33.4%, but they are more diverse compared with the gastropods which made up the highest (66.6%) percentage, but are less diverse. Their high abundance coupled with high concentrations of some physicochemical parameters indicates high impact of anthropogenic activities and may result into high organic pollution of the river. Elemi River thus experiences degradation as it flows downstream and benthic macroinvertebrates can serve as a good biological indicator to monitor the river health.},
 year = {2016}
}

Copy | Download

TY  - JOUR
T1  - Pre-impoundment Macroinvertebrate Composition of Elemi River, Ado-Ekiti, Ekiti State, Nigeria
AU  - Edward J. B.
AU  - Adewumi A. A.
AU  - Idowu E. O.
AU  - Oso J. A.
AU  - Adeoba E. A.
AU  - Olofintoye L. K.
Y1  - 2016/01/04
PY  - 2016
N1  - https://doi.org/10.11648/j.ijema.20150306.17
DO  - 10.11648/j.ijema.20150306.17
T2  - International Journal of Environmental Monitoring and Analysis
JF  - International Journal of Environmental Monitoring and Analysis
JO  - International Journal of Environmental Monitoring and Analysis
SP  - 425
EP  - 434
PB  - Science Publishing Group
SN  - 2328-7667
UR  - https://doi.org/10.11648/j.ijema.20150306.17
AB  - Benthic organisms are generally considered to be good indicators of environmental conditions of aquatic ecosystem. The present study was undertaken to study the pre-impoundment composition, abundance, distribution and diversity of the macroinvertebrate fauna of Elemi River, Ado-Ekiti, while using these organisms as water-quality bioindicators. Physicochemical, metals and benthic samples were collected biweekly at four stations between April –July, 2015, using standard methods of APHA (1998). The mean values of triplicate samples of physicochemical parameters include pH (6.82±0.06), temperature (27.05°C ± 4.35), TDS (0.07 ± 0.0001), DO (11.15 ± 1.88), BOD (5.8 ± 0.71), NO3 (57.08 ± 6.48), SO4 (76.14 ± 10.4). For the metals, the mean values are Pb (0.01 ± 0.0001), Cr (0.21 ± 0.04), Cu (0.07 ± 0.003), Mg (152.68 ± 79.5), Zn (2.05 ± 5.19), and Fe (1.98 ± 0.21). When compared with the WHO permissible standards for freshwaters, DO, BOD and NO3 had mean values that were significantly higher than the WHO standards for drinking and agricultural purposes. Also, metals including Cr, Mg, Zn, and Fe had mean values significantly higher than the WHO standards. Seven families of macroinvertebrates representing five orders of Mollusca (66.6%), Coleoptera (14.6%), Plecoptera (12.7%), Hemiptera (4.3%), and Tricoptera (1.8%) were recorded during the period of study. Of the total collected macroinvertebrates, insects comprised only 33.4%, but they are more diverse compared with the gastropods which made up the highest (66.6%) percentage, but are less diverse. Their high abundance coupled with high concentrations of some physicochemical parameters indicates high impact of anthropogenic activities and may result into high organic pollution of the river. Elemi River thus experiences degradation as it flows downstream and benthic macroinvertebrates can serve as a good biological indicator to monitor the river health.
VL  - 3
IS  - 6
ER  -

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