Ecosystem service assessment of selected wetlands of Kolkata and the Indian Gangetic Delta: multi-beneficial systems under differentiated management stress

Everard, Mark; Kangabam, Rajiv Das; Tiwari, Manoj Kumar; McInnes, Robert J.; Kumar, Ritesh; Talukdar, Gautam; Dixon, Harry; Joshi, Priya Pradeep; Allan, R. R.; Joshi, Dhaval; Das, Lalu

doi:10.1007/s11273-019-09668-1

Cited by 47 publications

(12 citation statements)

References 37 publications

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“…A false name (Alok Halder) is used (for security purposes) in the discussion section to unveil the specific perception of that people or community. Moreover, ESI was adopted separately for each wetland in two different seasons to calculate the spatio-temporal dynamisms of ecosystem services (Everard et al, 2019). Each service has been transformed into numeric score on a scale ranges from 'significantly positive' (++) through 'neutral' (0) to 'significantly negative' (-) and 'unknown' (?)…”

Section: Database and Methodologymentioning

confidence: 99%

Ecosystem Services of Chariganga and Arpara Beel in Nadia District, West Bengal: A Geographical Enquiry

Mandal

Dey²,

Roy

et al. 2020

SACI

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The ecological set up of the deltaic Bengal has immensely been benefitted by the ecosystem services extended by the freshwater wetlands. Along with the diverse ecological benefits, those floodplain wetlands serve the adjacent agrarian community through the provision of free goods and services. The present study has attempted to identify the ecological resources provided by the Chariganga and Arpara Beel and its impact on the livelihood patterns of the rural inhabitants. Both qualitative and quantitative techniques have been used for the study. Ecosystem Service Index (ESI) has been computed to quantify the values of ecosystem services in each category for the dry and wet periods. Nearly 33 ecosystem services are identified which have significantly influenced the socio-economic lifestyle of the inhabitants of three adjacent villages like Arpara, Gotpara, and Sultanpur but not homogeneously in terms of space, time, and status of stakeholders. The computed ESI values reveal that the maximum index value in each category of ecosystem services has been recorded at Chariganga Wetland in both dry and wet seasons. Moreover, the fluctuation of ESI between the two seasons is least at Chariganga Wetland (0.03) compared to Arpara Wetland (0.28). Spatio-temporal variation in availability of resources has conspicuously altered the yearlong utilisation pattern of wetlands’ resources and put a noticeable imprint upon the diverse economic activities and cultural practices of the beneficiaries. The seasonal transformation of a large segment of the studied wetlands in wet and dry months has noticeably influenced the livelihood strategies of the natives. As a consequence, dynamism in utilisation pattern and contrasted societal views concerning the wetland-people interdependency has come into existence.

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Section: Database and Methodologymentioning

confidence: 99%

Ecosystem Services of Chariganga and Arpara Beel in Nadia District, West Bengal: A Geographical Enquiry

Mandal

Dey²,

Roy

et al. 2020

SACI

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“…Discussions took place primarily in Hindi. Questions were introduced by conversation in locally relevant terms and in a semi-structured way rather than through a rigid questionnaire, reflecting the cultural differences between researchers and local people and the diversity of views of the interviewee group (following Everard et al, 2019). This approach enabled interviewees to respond freely rather than asking them rigorously to stick to precise questions.…”

Section: Key Informant Interviews In Laporiya and Antoli Village Surveysmentioning

confidence: 99%

Livelihood security enhancement though innovative water management in dryland India

Everard

West

2021

Water International

Self Cite

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Locally nuanced community-based shallow groundwater management interventions have proven important in saline and sodic monsoonal regions. A mixed methods approach characterizes achievement of regeneration of the formerly degraded socioecological system of Laporiya village in the semi-arid Salt Lake region of Rajasthan state (India), with a focus on locally adapted chauka systems. Local people are key participants and agents as well as principal beneficiaries of innovative nature-based management interventions. Technological innovations and governance are adapted to environmental processes and local livelihood priorities, resisting imposed engineered solutions. Findings are transferrable to dryland areas facing similar challenges of declining water and livelihood security.

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“…The wetlands serve as a carbon sink with their greenery and water bodies and, in addition, they support purification of the Kolkata's sewage water [103]. In the East Kolkata Wetlands, Everard et al [104] identified a wider diversity of services across all categories of ecosystem services. Among them, water purification and flood regulation significantly serve to secure Kolkata's water security directly.…”

Section: Urban Environmental Water Security Index and Its Spatial Varmentioning

confidence: 99%

“…Among them, water purification and flood regulation significantly serve to secure Kolkata's water security directly. At the same time, provisional ecosystem services in terms of agricultural production (mainly food and flower production) benefit city dwellers in terms of the betterment of the quality of their city lives [104] by providing locally generated products [105]. Mondal et al [102] showed that 14 km 2 of the wetland area of the East Kolkata Wetlands were transformed into urban settlement between 2000 and 2011; due to the vast completion of this process in the first decade of the 21st century, this transformation is not recorded in the study at hand.…”

Section: Urban Environmental Water Security Index and Its Spatial Varmentioning

confidence: 99%

Assessment of Environmental Water Security of an Asian Deltaic Megacity and Its Peri-Urban Wetland Areas

et al. 2021

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Achieving urban water security requires sustaining the trade-offs between the exploitation of water/environmental resources and ecosystem services. This achievement not only reduces the pollution and contamination in the environment, level of water stress, but also secures good ambient water quality and future for people’s well-being and livelihoods. Changes in land use and land cover and growth of impervious structures can immediately generate severe ecological and social issues and increase the level of natural or manmade risks, affecting the condition of ecosystem services within and in the vicinity of an urban region. As a result of these transformations and further exploitation, due to the growing anthropogenic pressure, surface water and groundwater quality can be deteriorated compared to ambient water quality standards (for both chemical and biological pollutants). Based on land use and land cover (LULC) data retrieved from remote sensing interpretation, we computed the changes of the ecosystem service values (ESV) associated with the LULC dynamics, water quality and, finally, urban water security during the pre- and post-monsoon periods of 2009, 2014 and 2019 in Kolkata, an Asian deltaic megacity, and its peri-urban wetlands named East Kolkata Wetlands (EKW). The area under wetlands reduced comprehensively in 2009–2019 due to the conversion of wetlands into various other classes such as urban settlement, etc. The quality of surface water bodies (such as rivers, lakes, canals and inland wetlands) deteriorated. The groundwater quality is still under control, but the presence of arsenic, manganese and other metals are a clear indication of urban expansion and related activities in the area. As a result, there was a change in the ESV during this timeframe. In the pre-monsoon period, there was an increase in total ESV from US$53.14 million in 2009 to US$53.36 million and US$59.01 million in 2014 and 2019, respectively. In the post-monsoon period, the ESV decreased from US$67.42 million in 2009 to US$64.13 and US$61.89 million in 2014 and 2019, respectively. These changes can be attributed to the peri-urban wetlands and the benefits or services arising out of them that contribute more than 50% of the total ESV. This study found that the area under wetlands has reduced comprehensively in the past 10 years due to the conversion of wetlands for various other uses such as urban expansion of the Kolkata City, but still, this peri-urban wetland supports the urban water security by providing sufficient ecosystem services. In conclusion, the transformation in extent of the water-related ecosystem is a crucial indicator of urban water security, which also measures the quantity of water contained in various water-related ecosystems. Quantitative analysis of the LULC change, hence, is important for studying the corresponding impact on the ecosystem service value (ESV) and water quality that helps in decision-making in securing urban water future and ecosystem conservation.

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Ecosystem service assessment of selected wetlands of Kolkata and the Indian Gangetic Delta: multi-beneficial systems under differentiated management stress

Cited by 47 publications

References 37 publications

Ecosystem Services of Chariganga and Arpara Beel in Nadia District, West Bengal: A Geographical Enquiry

Ecosystem Services of Chariganga and Arpara Beel in Nadia District, West Bengal: A Geographical Enquiry

Livelihood security enhancement though innovative water management in dryland India

Assessment of Environmental Water Security of an Asian Deltaic Megacity and Its Peri-Urban Wetland Areas

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