Ecological Studies of Wetland Ecosystem in Manipur Valley from Management Perspectives

Rai, Sumit; Raleng, Adon

doi:10.5772/24093

Cited by 6 publications

(7 citation statements)

References 8 publications

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“…In the present investigation, it can be concluded that the deforestation particularly jhum cultivation, landuse and cover change might have drastically affected the water quality of the lake [30]. A comparative analysis of water quality of six different sites indicates significant levels of pollution in the densely populated sites as compare to that of less populated sites because dissolved oxygen was low and biochemical oxygen demand and other parameters including nutrient levels were higher in the densely populated sites (Table 6).…”

Section: Fig 3 Qualification Of the Informantsmentioning

confidence: 55%

“…The lake dwellers, which are responsible source of threat to the lake ecosystem, need proper attention and monitoring. People participation can be practiced as per demand of the prevailing situation so that it leads to self management [30].…”

Section: Discussionmentioning

confidence: 99%

“…A comparative analysis of water quality of six different sites indicates significant levels of pollution in the densely populated sites as compare to that of less populated sites because dissolved oxygen was low and biochemical oxygen demand and other parameters including nutrient levels were higher in the densely populated sites (Table 6). High intensity of fertilizer usage in the agricultural fields and practice of fish farming contribute significantly to water quality deterioration in the northern zone [30]. Out of the thirteen parameters analyzed for the six study sites of KLNP, three study sites (Keibul, Komlakhong and Nongmaikhong) recorded higher dissolve oxygen, BOD above the WHO standard limit because of the higher pollutants with higher population ( Table 6).…”

Section: Fig 3 Qualification Of the Informantsmentioning

confidence: 99%

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Water Quality and Socio-economic Studies of the Pumdi Environment of Keibul Lamjao National Park, Loktak Lake, Manipur, India

Devi¹

2015

FEM

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Loktak Lake is the largest fresh water Lake in the Northeastern India. Keibul Lamjao National Park (KLNP) is a floating-mat (Phumdi) park inside the Lake. Study deals with the interrelated approaches: micobiological study, free-listing, participant observation and preference ranking of the six study sites of KLNP. Generally, plant collection per day was about 600 kg of Hedychium coronarium J. Koenig which were extracted from the park and found to be the most preferable species; while Persicaria sagittata (L.) H. Gross, as the least among the selected plants. Microbiological analysis of water for the six study sites recorded high pollution as evidenced by high values of Standard Plate Count (SPC) for bacteria ranging from 73,500-96,500 and microbial analysis of MPN (Most Probable Number) of coliform bacteria varies between100 and 320/100 ml and faecal coliform 95 and 200/100 ml. Free CO 2 concentrations varied at the surface from 2-60 mg/l and 6-70 mg/l at the bottom of the park. In the KLNP environment the higher CO 2 and lower concentrations of dissolved oxygen (DO) might be due to the floating mat (Phumdi) nature, in which light and exchange of gases does not occur as it does in the natural water bodies.

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Section: Fig 3 Qualification Of the Informantsmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Fig 3 Qualification Of the Informantsmentioning

confidence: 99%

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Water Quality and Socio-economic Studies of the Pumdi Environment of Keibul Lamjao National Park, Loktak Lake, Manipur, India

Devi¹

2015

FEM

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“…All studies were mainly based on ecological and socio-economic studies (Jain et al, 2011;Ngasepam et al, 2015;Jain et al, 2007;Ningthoujam et al, 2009;Rai and Raleng, 2011;Rai and Singh, 2014). It is also found that there is lack of educational/institutional scientific research as all studies were mainly carried out by Government set up organization like Loktak Development Authority; Directorate of Environment).…”

Section: Resultsmentioning

confidence: 99%

Status of wetlands valleyed in a hilly region of North East India - A review

Devi¹,

Oinam²,

Singh³

et al. 2017

Int. J. Water Res. Environ. Eng.

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A key to future sustenance of human societies lies in the sustainable management and wise use of Wetlands. Wetlands are frequently referred to as Kidneys of Landscape; are amongst the most productive ecosystems on the earth and any alterations might lead to changes in their bio-physical, socio-economic and climatic conditions. Due to various factors like rapid urbanization, industrialization and agricultural activities; Wetland ecosystems become the most threatened of all environmental resources on earth. The call for its protection gained in early 1960's globally. However, in India, the momentum for its protection gained only in late 1980's. In order to make effort to restore and protect such degraded Wetlands, its extensive study is required in terms of its ecological changes with its areal extent. There is a huge gap of scientific study about the Wetlands in India especially in this study region (Manipur) and eventually people could not recognise the importance of Wetland services given to mankind. Therefore, this study is aimed at reporting the status of Wetland exists in Manipur (a small state of North-Eastern India surrounded by hilly terrains) as a first step for further studies. The lack of scientific studies about the Wetlands in this particular study region is also reported in this paper.

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“…The mean pH levels were found to be highest during the post-monsoon season (7.32) and lowest during the winter season (6.97). In a previous study conducted by Rai and Raleng (2011) in Loktak lake the pH value ranged from 6.7 to 8. post-monsoon season in lake water were above this permissible limit except one site in monsoon whereas 36.84% (15 out of 38 sites) in winter and all the sites in pre-monsoon were below the limit. Previous research had also identi ed a comparable pattern of concentration 0.092 mg/L and 0.407 mg/L in premonsoon and post-monsoon respectively (Mayanglambam and Neelam 2020), however there have been divergent ndings as well.…”

Section: Phmentioning

confidence: 97%

Assessment of spatial and temporal variations in the water quality of the Loktak Lake – Largest Ramsar Site in North-east India

Singh,

Borah,

Goyari

et al. 2023

Preprint

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The present study was conducted in the Loktak lake which is the largest Ramsar site in the north-east India. In recent years, the lake has experienced a decline in its condition due to the accelerated process of urbanization, encroachment, high sedimentation, extensive use of chemical products and other anthropogenic activities. To assess the temporal water quality status, 38 sampling points were selected across the lake over four different seasons within a year. Twelve (12) physicochemical parameters like total alkalinity, calcium, chloride (Cl−), electrical conductivity (EC), dissolved oxygen (DO), total hardness, pH, phosphate (PO43−), salinity, sulphate (SO42−), total dissolved solids (TDS) and turbidity were analyzed using standard methods and instruments. The measured values of DO, EC, pH and turbidity were found beyond the desirable limits of BIS (Bureau of Indian Standards) and WHO (World Health Organization). This observation can be attributed to elevated levels of pollutants and microbiological processes. Lake water was ranged from slightly acidic to alkaline. High mean concentrations of EC (211.98) was found throughout the year. The study's findings indicate that the lake water exhibits a certain degree of pollution, necessitating appropriate treatment measures to ensure its suitability for both for domestic use and the preservation of wildlife. It is imperative to promptly develop effective management and conservation measures in order to mitigate the ongoing deterioration of water quality inside the lake and its associated ecosystem.

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Ecological Studies of Wetland Ecosystem in Manipur Valley from Management Perspectives

Cited by 6 publications

References 8 publications

Water Quality and Socio-economic Studies of the Pumdi Environment of Keibul Lamjao National Park, Loktak Lake, Manipur, India

Water Quality and Socio-economic Studies of the Pumdi Environment of Keibul Lamjao National Park, Loktak Lake, Manipur, India

Status of wetlands valleyed in a hilly region of North East India - A review

Assessment of spatial and temporal variations in the water quality of the Loktak Lake – Largest Ramsar Site in North-east India

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