An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India

Nutrient pollution of rivers is one of the prime threats facing the aquatic systems. In the present study, water samples (n = 20) were collected from the Karamana river (KR) during the pre-monsoon (PMN) and monsoon (MN) seasons of 2019 to analyze the seasonal variations. The water samples were analy...

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Autores principales:	Nivedi S. Mohan, Vishnu Sagar M. K., Sabu Joseph
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	biodiversity index chlorophyll-a karamana river nutrients phytoplankton primary productivity Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/255577818af1431cb5764f64918fe939
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spelling	oai:doaj.org-article:255577818af1431cb5764f64918fe9392021-12-02T07:40:29ZAn appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India0273-12231996-973210.2166/wst.2021.260https://doaj.org/article/255577818af1431cb5764f64918fe9392021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/10-11/2885https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Nutrient pollution of rivers is one of the prime threats facing the aquatic systems. In the present study, water samples (n = 20) were collected from the Karamana river (KR) during the pre-monsoon (PMN) and monsoon (MN) seasons of 2019 to analyze the seasonal variations. The water samples were analyzed for various physico-chemical parameters and to understand the nutrient status of the river. Furthermore, gross primary productivity (GPP), net primary productivity (NPP) and phytoplankton analysis were carried out to assess relationship among productivity variables and phytoplanktons. The study revealed that water quality is better during MN than PMN due to dilution. Among the two seasons, PMN showed relatively higher values for most of parameters like pH, EC, TDS, TA, Cl, NH4-N, NO3-N, NO2-N, Chl-a, GPP and NPP. The correlation among GPP, NPP, nutrients and other water quality parameters were done using SPSS. Phytoplankton of 23 genera belonging to three classes, namely Chlorophyceae (40%), Bacillariophyceae (40%) and Cyanophyceae (20%) have been identified in KR. The various phytoplankton diversity indices and statistical analyses were estimated and their relevance discussed in this paper. The nutrient enrichment in the downstream regions was affected the phytoplanktonic structure and diversity of the river. HIGHLIGHTS Water quality of Karamana river is better during monsoon.; Higher nutrient contents enhances productivity of Karamana river.; Higher values of nutrients and productivity variables noted at downstream stretches.; Phytoplankton analysis and diversity indices of Karamana river.; Palmer's index shows downstream stations are organically polluted.;Nivedi S. MohanVishnu Sagar M. K.Sabu JosephIWA Publishingarticlebiodiversity indexchlorophyll-akaramana rivernutrientsphytoplanktonprimary productivityEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 10-11, Pp 2885-2902 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	biodiversity index chlorophyll-a karamana river nutrients phytoplankton primary productivity Environmental technology. Sanitary engineering TD1-1066
spellingShingle	biodiversity index chlorophyll-a karamana river nutrients phytoplankton primary productivity Environmental technology. Sanitary engineering TD1-1066 Nivedi S. Mohan Vishnu Sagar M. K. Sabu Joseph An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
description	Nutrient pollution of rivers is one of the prime threats facing the aquatic systems. In the present study, water samples (n = 20) were collected from the Karamana river (KR) during the pre-monsoon (PMN) and monsoon (MN) seasons of 2019 to analyze the seasonal variations. The water samples were analyzed for various physico-chemical parameters and to understand the nutrient status of the river. Furthermore, gross primary productivity (GPP), net primary productivity (NPP) and phytoplankton analysis were carried out to assess relationship among productivity variables and phytoplanktons. The study revealed that water quality is better during MN than PMN due to dilution. Among the two seasons, PMN showed relatively higher values for most of parameters like pH, EC, TDS, TA, Cl, NH4-N, NO3-N, NO2-N, Chl-a, GPP and NPP. The correlation among GPP, NPP, nutrients and other water quality parameters were done using SPSS. Phytoplankton of 23 genera belonging to three classes, namely Chlorophyceae (40%), Bacillariophyceae (40%) and Cyanophyceae (20%) have been identified in KR. The various phytoplankton diversity indices and statistical analyses were estimated and their relevance discussed in this paper. The nutrient enrichment in the downstream regions was affected the phytoplanktonic structure and diversity of the river. HIGHLIGHTS Water quality of Karamana river is better during monsoon.; Higher nutrient contents enhances productivity of Karamana river.; Higher values of nutrients and productivity variables noted at downstream stretches.; Phytoplankton analysis and diversity indices of Karamana river.; Palmer's index shows downstream stations are organically polluted.;
format	article
author	Nivedi S. Mohan Vishnu Sagar M. K. Sabu Joseph
author_facet	Nivedi S. Mohan Vishnu Sagar M. K. Sabu Joseph
author_sort	Nivedi S. Mohan
title	An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
title_short	An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
title_full	An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
title_fullStr	An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
title_full_unstemmed	An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India
title_sort	appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in karamana river, kerala, india
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/255577818af1431cb5764f64918fe939
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An appraisal of nutrient status and productivity with emphasis on phytoplankton assemblage in Karamana River, Kerala, India

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