Applied Ecology and Environmental Sciences
ISSN (Print): 2328-3912 ISSN (Online): 2328-3920 Website: Editor-in-chief: Alejandro González Medina
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Applied Ecology and Environmental Sciences. 2019, 7(4), 135-147
DOI: 10.12691/aees-7-4-3
Open AccessArticle

Ecological Health and the Economics of Water Quality: An Assessment of Kolong River, Assam, India

Arup Kumar Hazarika1, , Dilip Kumar Bora2, Imdadul Islam Khan3 and Unmilan Kalita4

1Department of Zoology, Cotton University, Guwahati, Assam, India

2Department of Chemistry, University of Science and Technology, Meghalaya, India

3Department of Zoology, Cotton University, Assam, India

4Department of Economics, Gauhati University, Assam, India

Pub. Date: October 14, 2019

Cite this paper:
Arup Kumar Hazarika, Dilip Kumar Bora, Imdadul Islam Khan and Unmilan Kalita. Ecological Health and the Economics of Water Quality: An Assessment of Kolong River, Assam, India. Applied Ecology and Environmental Sciences. 2019; 7(4):135-147. doi: 10.12691/aees-7-4-3


River health has become one of the most important environmental issues today because of multiple anthropogenic stressors and other artificial interventions that have led to adverse long-term impacts on the physical habitats, biodiversity, ecological functions and the services provided by a water body. Kolong river, located in Assam, India, has suffered a similar fate with it being listed among the 275 most polluted rivers of India by the Central Pollution Control Board, Government of India, in 2015. This study has been carried out with the primary objective of diagnosing chemical and biological river health of the Kolong river with regard to physico-chemical parameters and abundance of the plankton community, using statistical analysis. Four sites along the river were selected for sampling purposes, namely, Jakhalabandha (Station 1), Samoguri (Station 2), Nagaon town (Station 3) and Roha (Station 4). Thirteen physico-chemical parameters were considered for the study and data were collected month-wise for which results have been shown season-wise (pre-monsoon, monsoon, retreating monsoons and winter). Tests for physico-chemical parameters were done through standard methods. Means and standard deviations along with the Karl Pearson’s correlation coefficients were also calculated. Findings indicate significant relationships among the physico-chemical parameters as well as correlation of the abundance of phytoplankton and zooplankton with abiotic factors the river which was further computed by a regression analysis. Phytoplankton dominated over zooplankton in all the Stations in the present study. High abundance of Bacillariophyceae, in case of phytoplankton, and Copepods, in case of zooplankton, were encountered, indicating poor ecological health of the Kolong river. The study also involves a briefing on the economics of water quality and relevant economic strategies for managing ecological quality of Kolong. The study finally asserts on the need for minimising anthropogenic disturbances through both government and people participation, so as to manage pollution while preserving the ecological heath of the Kolong river.

Kolong river ecological health physico-chemical anthropogenic environment water economics

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[1]  Von Schiller, D., Acuna, V., Aristi, I., Arroita, M., Basaguren, A., Bellin, A., Boyero, L., et al., “River ecosystem processes: A synthesis of approaches, criteria of use and sensitivity to environmental stressors”, Science of the Total Environment, 596, 465-480, October, 2017.
[2]  Alam, M. and Pathak, J. K., “Rapid Assessment of Water Quality Index of Ramganga River, Western Uttar Pradesh (India) Using a Computer Programme”. Nature and Science, 1-8, 2010.
[3]  Abowei, J.F., Tawari, C.C., Hart, A.I., Garrick, D.U., “Aspects of the ecology of Nigeria fresh waters: A case study on physicochemical characteristics plankton and finfish from lower Sombreiro River in Niger Delta”, J Appl Sci Environ Manage, 12, 51-60, 2008.
[4]  Xiang, H., Zhang, Y., and Richardson, J.S., “Importance of Riparian Zone: Effects of Resource Availability at Land-water Interface”, Riparian Ecology and Conservation, 3, April, 2016.
[5]  Almeida, C. A., Quintar, S., Gonzalez, P. and Mallea, M. A. “Influence of urbanization and tourist activities on the water quality of the Potreo de los Funes River (San Luis-Argentina)”, Monitoring and Assessment, 133, 459-465, 2007.
[6]  Venkatesharaju, K., Ravikumar, P., Somashekar, R. K. and Prakash, K. L. “Physico-Chemical and Bacteriological Investigation on the river Cauvery of Kollegal Stretch in Karnataka”, Journal of Science, Engineering and Technology, 6 (1), 50-59, 2010.
[7]  Strickland, J. D. H. and Parsons, T. R., “A practical hand book of seawater analysis”, Fish. Res. Board Can. Bull., 167, 185-199, 1972.
[8]  Elosegi, A., Flores, L. and Diez, J., “The importance of local processes on river habitat characteristics: A Basque stream case study”, Limnetica, 30(2), 183-196, 2011.
[9]  Dumas, C.F. and Schuhmann, P.W., “Measuring the economic benefits of water quality improvement with benefit transfer: an introduction for non-economists”, American Fisheries Society Symposium, 10, 1-17, 2005.
[10]  Ali, L.A., “Seasonal variation in physico-chemical properties and zooplankton biomass in Greater Zab River-Iraq”, Jordan Journal of Biological Sciences, 3, August, 2010.
[11]  Jafari, N., Nabavi, S.M. and Akhavan, M., “Ecological investigation of zooplankton abundance in the river Haraz, northeast Iran: Impact of environmental variables”, Archives of Biological Sciences, 63, January, 2011.
[12]  Ogbuagu, D.H. and Ayoade, A.A., “Seasonal Dynamics in Plankton Abundance and Diversity of a Freshwater Body in Etche, Nigeria”, Environment and Natural Resources Research, 2(2), 2012.
[13]  Waylett, A.J., Hutchins, M., Johnson, A.C., Bowes, M.J., and Loewenthal, M, “Physico-chemical factors alone cannot simulate phytoplankton behaviour in a lowland river”, Journal of Hydrology, 497, 223-233, August, 2013.
[14]  Chekryzheva, T.A., “Anthropogenic Changes in Phytoplankton in Lakes of the Kenti River System (Republic of Karelia)”, Water Resources, 41(4), 431-438, July, 2014.
[15]  Atique, U., Lim, B., Yoon, J. and An, K.G., “Biological Health Assessments of Lotic Waters by Biotic Integrity Indices and their Relations to Water Chemistry”, Water, 11(3), 436, February, 2019.
[16]  Kim, J., Atique, U. and An, K.G., “Long-Term Ecological Health Assessment of a Restored Urban Stream Based on Chemical Water Quality, Physical Habitat Conditions and Biological Integrity”, Water, 11(1), 114.
[17]  Hara, J., Mamun, M. and An, K.G., “Ecological River Health Assessments Using Chemical Parameter Model and the Index of Biological Integrity Model”, Water, 11(8), 1729, August, 2019.
[18]  Chopra, G., Bhatnagar, A. and Malhotra, P., “Limnochemical Characteristics of River Yamuna in Yamunanagar, Haryana, India”, International Journal of Water Resources and Environmental Engineering, 4, 97-104, 2012.
[19]  Negi, R., Negi, T. and Joshi, P., “Seasonal Variation and Species Composition of Phytoplankton in Ganga River And Its Tributary At Garhwal Region, Uttarakhand, India”, International Journal of Zoology and Research, 2, 19-30, June, 2012.
[20]  Jindal, R. and Sharma, C., “Studies on water quality of Sutlej River around Ludhiana with reference to physicochemical parameters”, Environmental Monitoring and Assessment, 174, 417-425, January, 2011.
[21]  Hafiz, B.Z., Pandit, A. and Shah, J.A., “Phytoplankton Community of River Jehlum in Kashmir Himalaya”, Journal of Environmental Science and Technology, 7(6), 326-336, 2014.
[22]  Krishnan, G., Singh, S., Singh, R.P., Ghosh, N.C., Khanna, A., “Water quality index of groundwater of Haridwar District, Uttarakhand, India”, Water Energy Int., 58(10), 55–58, 2016.
[23]  Yadav, K.K., Gupta, N., Kumar, V., Sharma, S., Arya, S. “Water quality assessment of Pahuj River using water quality index at Unnao Balaji, M.P., India”, Int J Sci Basic Appl. Res., 19(1), 241-250, 2015.
[24]  Dutta, B. and Sarma, B., “Assessment of Water Quality Index of the Kolong River of Nagaon District of Assam, India”, Journal of Engineering Research and Application, 8(6), 29-38, 2018.
[25]  Barbaruah, A.D., Phukan, S.S., and Dutta, A., “A comparative study of impact of water and soil quality on fish diversity of Monoha beel and Elenga beel of Morigaon, India”, The Clarion International Multidisciplinary Journal, 1(2), 94–100, 2012.
[26]  Khan, I.I. and Hazarika, A.K., “Study of some water quality parameters of Kolong riverine system of Nagaon, India”, The Clarion International Multidisciplinary Journal, 1(2), 2012.
[27]  Bora, M. and Goswami, D.C., “A study on seasonal and temporal variation in physico-chemical and hydrological characteristics of river Kolong at Nagaon Town, Assam, India”, Arch Appl Sci Res, 7(5), 110-117, 2015.
[28]  Barthakur, M., “Weather and Climate of North East India”, North Eastern Geographe,.18 (1, 2), 20-27, 1986.
[29]  APHA, Standard methods for the examination of water and waste water, 23rd edition, American Public Health Association, Washington, DC., USA, 2017.
[30]  Davis, C. C., The Marine and Freshwater Plankton, Michigan State Univ. Press, USA., 562, 1955.
[31]  Prescott, G. W., Algae of the Western Great Lake Area, 2nd Ed., Brown Co. Dubuque. I.O.W., 19-77, 1962.
[32]  Needham, J. G. and Needham, P. R., A Guide to the study of freshwater biology, Holden Day Inc, San Francisco, Constable and Co Ltd. 107, 1962.
[33]  Sushama, S., Ecology and biodiversity of Nila river, Ph.D Thesis submitted to University of Kerala, 2003.
[34]  Joseph, P. V. and Jacob, C., “Physico-chemical characteristics of Pennar river, a fresh water wetland in Kerala, India”, Journal of Chemistry, 7 (4), 1266-1273, 2010.
[35]  Kalavaty, S., Sharma, T.R., Kumar, P.S., “Water Quality Index of River Cauvery in Tiruchirappalli, Tamil Nadu”, ARCH. Environ. Sci., 05, 55-61, 2005.
[36]  Hem, J.D., Study and Interpretation of the Chemical Characteristics of Natural Water, Third Ed., USGS, Alexandria, US, 1985.
[37]  Bora, M. and Goswami, D.C., “Spatio-temporal land-use/landcover (LULC) change analysis of Kolong River basin, Assam, India using geospatial technologies”, International Journal of Geomat Geosci, 6(3), 1676-1684, 2016.
[38]  Kannan, K., Fundamentals of environmental pollution, S. Chand and Company Ltd., New Delhi, 1991.
[39]  Wetzel, R. G., Limnology, 2nd Ed.., Sanders college publishing, 1983.
[40]  Bhutiani R, Khanna, D.R., Kulkarni, DB, Ruhela, M., “Assessment of Ganga river ecosystem at Haridwar, Uttarakhand, India with reference to water quality indices”, Appl Water Sci, 2014.
[41]  Vass, K.K., Mondal, S.K. and Samanta, S., “The environment and fishery status of the River Ganges”, Aquatic Ecosystem Health and Management, 13(4), 385-394, October, 2010.
[42]  Medhi, K. K., Borkakati, S. and Borthakur, S., “An Assessment of Physico-Chemical Water Quality of Kolong River, Nagaon District (Assam), North East India”, Plant Archives. 15 (2), 1093-1096, 2015.
[43]  Tiwari, A., “Time scale changes in the water quality of the Ganga River, India and estimation of suitability for exotic and hardy fishes”, Hydrology Current Research, 7, August, 2016.
[44]  Nair, N. B. and Thampy, D. M., A text book of Marine Ecology. Macmillan Co. India Ltd., Delhi, 352, 1980.
[45]  Shinde, S.E., Pathan, T.S., Raut, K.S., Sonawane, D.L., “Studies on the physico chemical parameters and correlation coefficient of Harsool-Savangi Dam, District Aurangabad, India”, Middle East J Sci Res, 8, 44-54, 2011.
[46]  Buragohain, B. B. and Yasmin, F., “Biomonitoring of Pollution by Microalgae Community in Aquatic System”, Int. J. Appl. Sci. Biotechnol, 2 (1), 45-49, 2014.
[47]  Moitra, S. K. and Bhattacharya, B. K., “Some hydrobiological factors affecting plankton production in a fish pond in Kalyani, West Bengal, India”, Ichthyol, 8-12, 1965.
[48]  Reid, G. K., Ecology of Inland Waters and Estuaries, Rienhold Publication Corporation. New York, 1961.
[49]  Michael, R. G., “Studies on the Zooplankton of tropical fish-pond”, Hydrobiol., 32: 47-68, 1968.
[50]  Vidya, V., Sumathy, K., and Prasad, G., “Phytoplankton as Pollution Indicators: A Case Study from Wetland Areas of Vembanad Lake Adjacent to Sea Food Processing Facilities”, Journal of Aquatic Biology and Fisheries, 2, 835-842, 2014.
[51]  Venkateshwarlu, B., “Natural Farming Processes”, International Research Journal for Dryland Agriculture, Institute of Agricultural Sciences and Technology Trust, Bengaluru, May, 2018.
[52]  Duncan, J., Saikia, S., Gupta, N. and Biggs, E., “Observing climate impacts on tea yield in Assam, India”, Applied Geography, 77, 64-71, December, 2016.
[53]  Saleem, M., Hussain, Athar. And Mahmood, G., “Analysis of groundwater quality using water quality index: A case study of greater Noida (Region), Uttar Pradesh, India, Cogent Engineering, September 2016.
[54]  Mustafa, S.F., Removal of chloride from wastewater by advanced softening process using electrochemically generated aluminium hydroxide¸ Ph.D. thesis, Texas A&M University, August, 2014.
[55]  Reynaud, A., Renzetti, S. and Villeneuve, M., “Residential water demand with endogenous pricing: The Canadian Case’, Water Resources Research, 51(11), November, 2005.
[56]  Venkatramanan, S., Chung, Y., Lee, S. and Park, N, “Assessment of river water quality via environmentric multi-variate statistical tools and water quality index: A case study of Nakdong River Basins, Korea.” Carpathian Journal of Earth and Environmental Sciences, 9(2), 125-132, 2014.
[57]  Cosgrove, W.J. and Loucks, D.P., “Water Management: Current and future challenges and research directions”, Water Resources Research, 51(6), 2015.
[58]  Ministry of Water resources and Ganga Rejuvenation, Strategic Report on National Water Mission, Government of India, Delhi, 2018.