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Understanding enviro‑climatological impact on fish biodiversity of the tropical floodplain wetlands for their sustainable management

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Title Understanding enviro‑climatological impact on fish biodiversity of the tropical floodplain wetlands for their sustainable management
 
Creator Uttam Kumar Sarkar
Snigdha Bakshi
L. Lianthuamluaia
P. Mishal
B. Das Ghosh
S. Saha
G. Karnatak
 
Subject Climate change
Wetlands
Fish diversity
Ecology
Impact
Sustainability
 
Description Not Available
Inland open water fisheries around the world are threatened due to growing anthropogenic pressures, climate change and
overexploitation of the germplasm resources. Understanding how the floodplain wetland fish diversity responds to these
unprecedented challenges is critical for developing alternative management and mitigation strategies in vulnerable wetland
ecosystems. This communication elucidates the changing pattern of fish diversity in three moderately impacted tropical
floodplain wetlands namely Bhomra, Mathura and Chandania in the lower Ganges basin during the year 2017–2019.
Experimental fishing using gill net, drag net and cast net was carried out monthly to assess the fish diversity pattern in the
three wetlands. Enviro-climatological parameters were assessed, and the important parameters influencing fish diversity
were identified. Most of the critical environment parameters including pH, DO, water temperature were in the favourable
range for fish. ANOVA indicated that pH, TDS, conductivity, salinity, transparency, depth and hardness showed significant
difference (p < 0.05) among the three wetlands. Thirty-six fish species were recorded from the three wetlands out of which 2
species were vulnerable (VU) and 1 species was near threatened (NT). Species richness declined in all the studied wetlands
ranging from 22.85 to 54% from the year 2002. The Canonical Correspondence Analysis showed a varying relationship of
climatic and environmental parameters with the occurrence of fishes indicating species-specific adaptive capacity. The study
also revealed a decrease in fish production (1991 to 2017) with the decreasing trend in rainfall and the increasing trend in
temperature showing enviro-climatological influence. The new information generated would help to manage the wetland
resources for sustainable fisheries enhancement and biodiversity conservation.
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Date 2021-08-10T08:57:37Z
2021-08-10T08:57:37Z
2020-09-22
 
Type Research Paper
 
Identifier Sarkar, U. K., Bakshi, S., Lianthuamluaia, L., Mishal, P., Ghosh, B. D., Saha, S., & Karnatak, G. (2020). Understanding enviro-climatological impact on fish biodiversity of the tropical floodplain wetlands for their sustainable management. Sustainable Water Resources Management, 6(5), 1-12.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/54212
 
Language English
 
Relation Not Available;
 
Publisher Springer