Assessment of Physicochemical Parameters and Phytoplankton of Eme River, Umuahia, Southeast Nigeria

Emeka Donald Anyanwu, Onyinyechi Gladys Adetunji, Solomon Nnanna Umeham


Aquatic ecosystems respond differently to diverse anthropogenic activities in their watersheds. Phytoplankton is sensitive to their environment and is used to monitor anthropogenic impacts. A study was carried out in a South-eastern Nigerian River between December 2017 and November 2018 in 6 stations; to assess the phytoplankton community, water quality, and anthropogenic impacts. Sand mining was a major activity in the river among others. The phytoplankton was sampled with the filtration method while water was collected and analyzed using standard methods. A total of 36 phytoplankton species were recorded with Chlorophyceae being the most abundant group. The most abundant species - Melosira granulata is a pollution indicator. The water quality and phytoplankton structure showed that the water was tending towards eutrophication. This is attributed to the observed anthropogenic activities and cumulative impacts of all the activities in the watershed. The impact of sand mining activities was observed more in the downstream stations (4 – 6) while perturbation from swimming children and related activities was observed in station 1. The community structure reflected the impacts of the activities while CCA showed the major water quality parameters that influenced the phytoplankton community structure.


anthropogenic, bio-indicator, Diversity, sand mining, water quality

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D. Bordoloi and P. P. Baruah, “Water quality assessment using phytoplankton in a historical pond of Upper Assam,” Journal of Algal Biomass and Utilisation, vol.5, no. 2, pp. 1 – 7. 2012.

E. B. Amah-Jerry, E. D. Anyanwu, and D. A. Avoaja, “Anthropogenic impacts on the water quality of Aba River, Southeast Nigeria,” Ethiopian Journal of Environmental Studies and Management, vol.10, no. 3, pp. 299–314. 2017. doi: 10.4314/ejesm.v10i3.3

J. R. Karr, J. D. Allen, and A. C. Benke, “River conservation in the United States and Canada,” in: Global perspectives on River conservation, P. J. Boon, B. R. Davies, and G. E. Petts, Eds., New York, NY, USA: Wiley, 2000, pp. 3–39.

G. N. Nwonumara, “Water Quality and Phytoplankton as Indicators of Pollution in a Tropical River,” in Proceedings of 6th NSCB Biodiversity Conference, University of Uyo, Uyo, Nigeria, 2018, pp. 83 – 89.

F. Patang, A. Soegianto, and S. Hariyanto, “Benthic Macroinvertebrates Diversity as Bioindicator of Water Quality of Some Rivers in East Kalimantan, Indonesia,” International Journal of Ecology, 2018. doi :10.1155/2018/5129421

E. D. Anyanwu, M. C. Okorie, and Odo S. N, “Macroinvertebrates as bioindicators of Water Quality of Effluent-receiving Ossah River, Umuahia, Southeast Nigeria,” Zanco Journal of Pure and Applied Sciences, vol. 31, no. 5, pp. 9-17. 2019. doi: 10.21271/ZJPAS.31.5.2

O. O. Aliu, E. O. Akindele, and I. F. Adeniyi, “Biological assessment of the Headwater Rivers of Opa Reservoir, Ile-Ife, Nigeria, using ecological methods,” The Journal of Basic and Applied Zoology, vol. 81, no. 11. 2020. doi: 10.1186/s41936-020-00151-5

R. J. Geider, et al., “Primary productivity of planet earth: Biological determinants and physical constraints in terrestrial and aquatic habitats,” Global Change Biology, vol. 7, no. 8, pp. 849–882. 2001. doi:10.1046/j.1365-2486.2001.00448.x

N. Anyinkeng, A. M. Mih, T. A. Suh, and C. C. Awah, “Phytoplankton diversity and abundance in water bodies as affected by anthropogenic activities within the Buea municipality, Cameroon,” Journal of Ecology and the Natural Environment, vol. 8, no. 7, pp.99-114. 2016. doi: 10.5897/JENE2016.0566

E. Bellinger and D Sigee, “A Key to the More Frequently Occurring Freshwater Algae,” In: Freshwater Algae: Identification, Enumeration and Use as Bioindicators (2nd Edition)”, Wiley-Blackwell, pp. 141 – 251. 2015.

Z. H. Yusuf, “Phytoplankton as bioindicators of water quality in Nasarawa reservoir, Katsina State Nigeria,” Acta Limnologica Brasiliensia, vol. 32, e4. 2020. doi : 10.1590/S2179-975X3319

T. K. Parmar, D. Rawtani, and Y. Agrawal, “Bioindicators: The natural indicator of environmental pollution,” Journal of Frontiers in Life Sciences, vol. 9, no. 11, pp. 110 – 118. 2016.

B. E. Hatt, T. D. Fletcher, C. J. Walsh and S. L. Taylor, “The influence of urban density and drainage infrastructure on the concentrations and loads of pollutants in small streams,” Environmental Management, vol. 34, no. 1, pp. 112–124. 2004. doi:10.1007/s00267-004-0221-8

J. Heino, “The importance of metacommunity ecology for environmental assessment research in the freshwater realm,” Biological Reviews, vol. 88, no. 1, pp. 166–178. 2013. doi:10.1111/j.1469-185X.2012.00244.x

P. Znachor, et al., “Changing environmental conditions underpin long-term patterns of phytoplankton in a freshwater reservoir,” Science of the Total Environment, vol. 710, 2020. doi:10.1016/j.scitotenv.2019.135626

APHA, “Standard Methods for the Analysis of Water and Wastewater, 22nd Edition,” American Public Health Association, Washington D.C. 2012. pp. 2671.

S. Janse van Vuuren, J. Taylor, A. Gerber, and C. van Ginkel, “Easy identification of the most common freshwater algae. A guide for the identification of microscopic algae in South African freshwaters,” Resource Quality Services RQS, 2006. pp. 212.

J. Park, K. Kim, C. Cho, M. Kang, and B. Kim, “Spatio-temporal characteristics of air and water temperature change in the middle reach of the Nakdong River,” Journal of Environmental Policy and Administration, vol. 9, pp. 233-253. 2016.

S. J. Dugdale, R. Allen Curry, A. St-Hilaire and S. N. Andrews, “Impact of future climate change on water temperature and thermal habitat for keystone fishes in the Lower Saint John River,” Water Resources Management, vol. 32, no. 15, pp. 4853–4878. 2018.

D. Chapman and V. Kimstach, “Chapter 3, Selection of Water Quality Variables,” in: Water Quality Assessment. A Guide to the use of Biota, Sediments and Water in Environmental Monitoring (2nd Edition), D. Chapman, ed. London UK and New York USA: Taylor and Francis, 1996, pp. 609.

E. D. Anyanwu, R. B. Ikomi, and F. O. Arimoro, “Water quality and zooplankton of the Ogba River, Benin City, Nigeria,” African Journal of Aquatic Science, vol. 38, no. 2, 193-199. 2013.

S. Verma, D. Tiwari, and A. Verma, “Algal dynamics of River Pandu in relation to ambient environment,” Ecoprint, vol. 20, pp. 9-17. 2013.

A. O. Ekwu and N. D. Udo, “Plankton Communities of Ikpa River, Southeast Nigeria Exposed to Sand-dredging Activities,” Journal of Fisheries and Aquatic Science, vol. 9, no. 5, pp. 345 – 351. 2014.

T. P. Yen and H. Rohasliney, “Status of Water Quality Subject to Sand Mining in the Kelantan River, Kelantan,” Tropical Life Sciences Research, vol. 24, no. 1, pp. 19–34. 2013.

E. D. Anyanwu and S. N. Umeham, “Identification of waterbody status in Nigeria using predictive index assessment tools: a case study of Eme River, Umuahia, Nigeria,” International Journal of Energy and Water Resources, vol. 4, no. 3, pp. 271-279. 2020. doi :10.1007/s42108-020-00066-5

M. A. Ashraf, M. J. Maah, I. Yusoff, A. Wajid, and K. Mahmood, “Sand mining effects, causes and concerns: A case study from Bestari Jaya, Selangor, Peninsular Malaysia,” Scientific Research and Essays, vol. 6, no. 6, pp. 1216-1231. 2011.

E. Seiyaboh, E. N. Ogamba, and D. I. Utibe, “Impact of dredging on the water quality of Igbedi Creek, Upper Nun River, Niger Delta, Nigeria,” IOSR Journal Of Environmental Science, Toxicology and Food Technology, vol. 7, no. 5, pp. 51–56. 2013.

S. Sheeba, “Biotic environment and sand mining - A case study from Ithikkara River, South West Coast of India,” Journal of Industrial Pollution Control, vol. 25, no. 2, pp. 133-138. 2009.

V. S. Kale, “Consequence of temperature, pH, turbidity and dissolved oxygen water quality parameters,” International Advanced Research Journal in Science, Engineering and Technology, vol. 3, no. 8, pp. 186–190. 2016.

E. D. Anyanwu and C. S. Emeka, “Application of water quality index in the drinking water quality assessment of a southeastern Nigeria river,” Food and Environment Safety, vol. XVIII, no. 4, pp. 308–314. 2020.

J. A. Akankali, A. S. Idongesit, and P. E. Akpan, “Effects of sand mining activities on water quality of Okoro Nsit stream, Nsit Atai Local Government Area, Akwa Ibom State, Nigeria,” International Journal of Development and Sustainability, vol. 6, pp. 451-462. 2017.

E. D. Anyanwu and A. B. Ukaegbu, “Index approach to water quality assessment of a south eastern Nigerian river,” International Journal of Fisheries and Aquatic Studies, vol. 7, no. 1, pp. 153-159. 2019.

M. Rehman, et al., “Dredging induced changes in zooplankton community and water quality in Dal Lake, Kashmir, India,” African Journal of Environmental Science and Technology, vol. 10, no. 5, pp. 141-149. 2016. doi: 10.5897/AJEST2016.2096

Z. Dorak, “Zooplankton abundance in the lower Sakarya River Basin (Turkey): Impact of environmental variables,” Journal of Black Sea/Mediterranean Environment, vol. 19 no.1, pp. 1-22. 2013.

FMEnv. 2011. National Environmental (Surface and Groundwater Quality Control) Regulations, S.I. No. 22, Gazette no. 49, vol. 98. Abuja: Federal Ministry of Environment.

A. S. Rao, S. Marshall, J. Gubbi, M. Palaniswami, R. Sinnott, and V. Pettigrove, “Design of Low-Cost Autonomous Water Quality Monitoring System,” International Conference on Advances in Computing, Communications and Informatics (ICACCI), Mysore, 22-25, August 2013, pp. 14-19.

H. Aydin, F. Ustaoğlu, Y. Tepe, and E. N Soylu, “Assessment of water quality of streams in northeast Turkey by water quality index and multiple statistical methods,” Environmental Forensics, vol. 22, pp. 280-287. 2020. doi: 10.1080/15275922.2020.1836074.

A. Bhatnagar, S. N. Jana, S. K. Garg, B. C. Patra, G. Singh, and U. K. Barman, “Water quality management in Aquaculture”, In: Course Manual of summer school on development of sustainable Aquaculture technology in fresh and saline water. CCS Hagyana Agricultural, Hisar (India), 3, 2004. pp. 203-210.

A. M. Al-Sulaiman and B. H. Khudair, “Correlation between BOD5 and COD for Al-Diwaniyah Wastewater Treatment Plants to obtain the Biodegradability Indices,” Pakistan Journal of Biotechnology, vol. 15, no. 2, pp. 423-427. 2018.

R.K. Patel, “Nitrates-its generation and impact on environment from mines: A Review,” National Conference on Sustainable Mining Practice, India. Dec. 2016, pp. 2 – 3.

Lehigh Environmental Initiative, “Nitrates," Enviro. Sci. Inquiry. Accessed 17 March 2021.

V. G. Christensen, K. E. Lee, J. M. McLees, and S. L. Niemela, “Relations between retired agricultural land, water quality, and aquatic-community health, Minnesota River basin,” Journal of Environmental Quality, vol. 41, pp. 1459-1472. 2011.

V. K. Dubey, U. K. Sarkar, R. S. Kumar, J. I. Mir, A. Pandey, and W. S. Lakra, “Length-weight relationships (LWRs) of 12 Indian freshwater fish species from an un-impacted tropical river of Central India (River Ken),” Journal of Applied Ichthyology, vol. 28, pp. 854-856. 2012.

R. M. Kutama, M. M. Abubakar, and M. L. Balarabe, “The plankton as indicators of water quality in Kusalla Reservoir: A shallow man made lake,” IOSR Journal of Pharmacy and Biological Sciences, vol. 9, no. 3, pp. 12-15. 2014.

A. D. Kshirsagar, M. L. Ahire, and V. R. Gunale, “Phytoplankton Diversity Related to Pollution from Mula River at Pune City,” Terrestrial and Aquatic Environmental Toxicology, vol. 6, no. 2, pp. 136-142. 2012.

M. N. Bwala, “The abundance of phytoplankton in River Nggada and River Ngadda-Bul, Maiduguri Metropolis, Borno State, Nigeria,” Global Educational Research Journal, vol. 7, no. 7, pp. 820-829. 2019.

I. E. Ekpo, M. A. Essien-Ibok, and A. O. Duncan, “Densities, spatial distribution and community structure of plankton of Odot Stream,” Journal of Ecology and the Natural Environment, vol. 7, no. 6, pp. 180-187. 2015. doi:10.5897/JENE2015.0521

F. O. Arimoro, H. E. Olisa, U. N. Keke, A.V Ayanwale, and V. I. Chukwuemeka, “Exploring spatio-temporal patterns of plankton diversity and community structure as correlates of water quality in a tropical stream,” Acta Ecologica Sinica, vol. 38, pp. 216–223. 2018.

O. A. Davies, B. B. Otene, D. Amachree, and F. A. Nwose, “Phytoplankton Community of Upper Reaches of Orashi River, Rivers State, Nigeria,” Specialty Journal of Biological Sciences, vol. 5, no. 3, pp. 1-12. 2019.

T. Rajagopal, A. Thangamani, and G. Archunan, “Comparison of physico-chemical parameters and phytoplankton species diversity of two perennial ponds in Sattur area, Tamil Nadu,” Journal of Environmental Biology, vol. 31, pp. 787-794. 2010.

G. M. N. Rao and P. M. Pragada, “Seasonal abundance of micro algae in Pandi Back waters of Godavari Estuary, Andra Pradesh, India,” Notulae Scientia Biologicae, vol. 2, pp. 26-29. 2010.

P. Verma, U. C. Gupta, P. R. Adiyecha, and H.A. Solanki, “Seasonal variation in the phytoplankton biodiversity of Chandlodia Lake,” International Journal of Innovative Research in Science, Engineering and Technology, vol. 3, no. 1, pp. 1-6. 2014.

B. O. Dimowo, “The phytoplankton species composition and abundance of Ogun River, Abeokuta, Southwestern Nigeria,” International Journal of Aquaculture, vol. 3, no. 2, pp. 4-7. 2013. doi: 10.5376/ija.2013.03.0002

M. A. Essien-Ibok, “The phytoplankton community structure of a tropical river in Niger Delta, Nigeria”, Journal of Environment and Earth Science, vol. 3, no. 8, pp. 76 – 81. 2013.

C. M. Palmer,”A composite rating of algae tolerating organic pollution,” Journal of Phycology, vol. 5, pp. 78-82. 1969.

O. I. Okogwu and A. O. Ugwumba, “Seasonal dynamics of phytoplankton in two tropical rivers of varying size and human impact in Southeast Nigeria”, Revista De Biología Tropical, vol. 61, no. 4, pp. 1827-1840. 2013.

Z. Salem, M. Ghobara, and A. A. El Nahrawy, “Spatio-temporal evaluation of the surface water quality in the middle Nile Delta using Palmer’s algal pollution index”, Egyptian Journal of Basic and Applied Sciences, vol. 4, pp. 219–226. 2017. doi:10.1016/j.ejbas.2017.05.003

Y. Tanimu, S. P. Bako, J. A. Adakole, and J. Tanimu, “Phytoplankton as bioindicators of water quality in Saminaka reservoir, Northern Nigeria,” Proceedings of the 2011 International Symposium on Environmental Science and Technology, Dongguan, Guangdong Province, China. 2011. pp. 318-322.

A. W. Hastuti, Y. Pancawati, and I. N. Surana, “The abundance and spatial distribution of plankton communities in Perancak Estuary, Bali”, IOP Conference Series: Earth and Environmental Science, Volume 176, 2nd International Conference on Marine Science: Better Insight for the Healthy Ocean, 6–7 September 2017, Bogor, Indonesia. 2018. doi :10.1088/1755-1315/176/1/012042

M. Q. Xu, H. Cao, P. Xie, D. G. Deng, W. S. Feng, and J. Xu, “The temporal and spatial distribution, composition and abundance of planktonic protozoa, with special relation to eutrophication in the Chaohu Lake, China,” European Journal of Protistology, vol. 41, pp. 183-192. 2005.

L. Koehnken, M. S. Rintoul, M. Goichot, D. Tickner, A-C. Loftus, and M.C. Acreman, “Impacts of riverine sand mining on freshwater ecosystems: A review of the scientific evidence and guidance for future research,” River Research and Applications, vol. 36, no. 3, pp. 325-326. 2020. doi: 10.1002/rra.3586.

E. J. Ko, D. K. Kim, E. S. Jung, Y. J. Heo, G. J. Joo, and H. W. Kim, “Comparison of Zooplankton Community Patterns in Relation to Sediment Disturbances by Dredging in the Guemho River, Korea,” Water, vol. 12, pp. 3434. 2020. doi:10.3390/w12123434.

B. H. Zheng, Z. Q. Tian, L. Zhang, and F.D. Zheng, “The characteristics of the hydrobios’ distribution and the analysis of water quality along the west shore of Taihu Lake,” Acta Ecologica Sinica, vol. 27, pp. 4214-4223. 2007.

B. Yang, Y. Jiang, W. He, W. Liu, X. Kong, S.E. Jørgensen, and F. Xu, “The tempo-spatial variations of phytoplankton diversities and their correlation with trophic state levels in a large eutrophic Chinese lake,” Ecological Indicators, vol. 66, pp. 153–162. 2016. doi: 10.1016/j.ecolind.2016.01.013.

F. Meng, Z. Li, L. Li, F. Lu, Y. Liu, X. Lu, and Y. Fan, “Phytoplankton alpha diversity indices response the trophic state variation in hydrologically connected aquatic habitats in the Harbin Section of the Songhua River,” Scientific Reports, vol. 10, no.1, pp. 1-13. 2020. doi: 10.1038/s41598-020-78300-7.

E. K. Morris, et al., “Choosing and using diversity indices: insights for ecological applications from the German Biodiversity Exploratories,” Ecology and Evolution, vol. 4, no. 18, pp. 3514-3524. 2014. doi: 10.1002/ece3.1155

B. A. Fonge, P. T. Tabot, C. A. Mange, and C. Mumbang, “Phytoplankton community structure and physico-chemical characteristics of streams flowing through an agro- plantation complex in Tiko, Cameroon,” Journal of Ecology and the NaturalEnvironment, vol. 7, no. 5, pp. 170-179. 2015. doi: 10.5897/JENE2015.0515

A. Celekli and O. Kulkoyluoglu, “On the relationship between ecology and phytoplankton composition in a karstic spring (Cepni, Bolu)”, Ecological Indicator, vol. 7, no. 2, pp. 497-503. 2007. doi : 10.1016/j.ecolind.2006.02.006

N. Abrantes, S. C. Antunes, M. J. Pereira, and F. Goncalves, “Seasonal succession of cladocerans and phytoplankton and their interactions in a shallow eutrophic lake (Lake Vela, Portugal),” Acta Oecologica, vol. 29, no.1, pp. 54–64. 2006.

C. Liu, L. Liu, and H. Shen, “Seasonal variations of phytoplankton community structure in relation to physico-chemical factors in Lake Baiyangdian, China,” Procedia Environmental Sciences, vol. 2, pp. 1622–1631. 2010.



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