Ecological assessment of a subtropical floodplain wetland of the Ganga basin in the context of changing climate using GIS tools

Autor: Bandana Das Ghosh, Sanjeet Debnath, Uttam Kumar Sarkar, Basanta Kumar Das, Mishal Puthiyottil, Canciyal Johnson, Gunjan Karnatak
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Journal of Water and Climate Change, Vol 14, Iss 11, Pp 4220-4235 (2023)
Druh dokumentu: article
ISSN: 2040-2244
2408-9354
DOI: 10.2166/wcc.2023.410
Popis: Climate change associated with anthropogenic stressors are considered the main threat to the tropical wetlands, resulting in reduced water connection followed by a decline in ecological functions. This article presents a systemic approach to assess the present ecological status of a tropical floodplain wetland concerning the fisheries and associated ecosystem services. The analysis of historic climatic data indicated significant change (increasing average annual air temperature, R2 = 0.098; decreasing total annual rainfall, R2 = 0.042). In addition, a significant reduction in the wetland area was also observed. Altogether, 45 fish species were reported in the studied wetland, of which 2 are listed as endangered and 7 are near threatened. The present study demonstrated the variation of the important fisheries-related environment and nutrient parameters of the wetland through the geographic information system (GIS)-based spatial distribution map for the reader's digest. It has been found that the provisioning ecosystem services are higher in number (n=9) followed by supporting (n=6), regulating (n=4), and cultural (n=2) ecosystem services. Finally, we have discussed some important case-specific sustainable climate-smart adaptation and mitigation approaches to strengthen the resilience and adaptive capacity of fishers. HIGHLIGHTS The analysis of climatic data (1985–2020) showed a considerable change in climatic parameters.; Forty-five species were reported in the wetland, of which 2 are listed as endangered and 7 are near threatened.; We used GIS tools to demonstrate spatial variation, and mapping of nutrient and water parameters are influenced mostly by climatic parameters.;
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