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http://krishi.icar.gov.in/jspui/handle/123456789/61037| Title: | Impact of riverine connectivity on ecology and fisheries of selected floodplain wetlands in Assam |
| Other Titles: | Not Available |
| Authors: | Pronob Das B.K. Bhattacharjya S. Yengkokpam A.K. Yadav S. Borah N. Sharma N.S. Singh B.C. Ray A. Kakati B.K. Das |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::Central Inland Fisheries Research Institute |
| Published/ Complete Date: | 2020-02-17 |
| Project Code: | NEH |
| Keywords: | Ecology Fisheries Riverine connnectivity Floodplain wetlands Assam |
| Publisher: | AEHMS, ICAR-CIFRI, IFSI, PFGF & GBPUAT |
| Citation: | Das, P., Bhattacharjya, B. K., Yengkokpam, S., Yadav, A. K., Borah, S., Sharma, N., Singh, N. S., Ray, B. C., Kakati, A. and Das, B. K., 2020. Impact of riverine connectivity on ecology and fisheries of selected floodplain wetlands in Assam. In: Book of Abstracts: Conference on Ecosystem Health and Fisheries of Indian waters: Multiple stressors, Management & Conservation (eds. Munwar et al.), held at GBPUAT, Pantnagar during 17-19 Feb, 2020. Published by President, AEHMS; Director, ICAR-CIFRI and Registrar, GBPUAT, Pantnagar, pp. 99. |
| Series/Report no.: | Not Available; |
| Abstract/Description: | Ecology and fisheries in two floodplain wetlands (beels) located in Nagaon district of Assam viz., Samaguri beel (N 26° 25' 36" and E 92° 51' 27"; 60 ha; seasonally open) and Sibasthan-Potakolong beeI (N 26° 30' 37" and E 92° 52' 22"; 92 ha; closed) in relation to riverine connection are discussed. Physico-chemical parameters of water indicated better water quality regimes in Samaguri than Sibasthan-Potakolong beel. Total phosphorous (ug/l), chlorophyll-a (ug/l) and net primary productivity was slightly higher in Samaguri (53.7-83.3; 18.7-63.2 and 930.5-1008.0) than Sibasthan-Potakolong beel (30.3-142.2; 14.2-23.8; 538.4-880.0). T-test showed Chl-a, pH and dissolved oxygen was significantly (p<0.05) different between the beels. Trophic Status Index indicated eutrophic conditions (60-70) of the beels. Soil was sandy-clayey in nature. Phytoplankton population was higher in Samaguri than Sibasthan-potakolong beel mainly because of low macrophyte infestation and competition for nutrient and space. Macrophyte coverage as well as macrophyte-associated fauna was higher during the monsoon seasons. Abundance of benthos was found to be higher in Sibasthan-Potakolong beel in winter season. Average fish yield rate was higher in Samaguri (698 kg/ha/yr) than Sibasthan-Potakolong beel (483 kg/ha/yr); supplementary stocking was practiced in both the beels. Higher fin-fish diversity (53nos.) was recorded in Samaguri than Sibasthan-Potakolong beel (42nos.) apparently because of riverine input in the former. Cypriniformes dominated the diversity in both the beel. Stocked fishes contributed 55% of the total catch in Samaguri, whereas it was 70% in Sibasthan-Potakolong beel. Among indigenous fishes, Indian river shad (35%) and small catfishes (10%) dominated the catch in Samaguri and Sibasthan-Potakolong beel, respectively. The study indicated that the seasonal riverine connectivity had positive influence on ecology and fin fish diversity of the beels. |
| Description: | Not Available |
| ISBN: | 8185482365 |
| Type(s) of content: | Proceedings |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Not Available |
| Volume No.: | Not Available |
| Page Number: | Not Available |
| Name of the Division/Regional Station: | Regional Centre |
| Source, DOI or any other URL: | 10.13140/RG.2.2.17771.16169 https://www.researchgate.net/publication/344689289_Impact_of_riverine_connectivity_on_ecology_and_fisheries_of_selected_floodplain_wetlands_in_Assam?channel=doi&linkId=5f8986a9a6fdccfd7b6574d3&showFulltext=true |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/61037 |
| Appears in Collections: | FS-CIFRI-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2020_IMACT OF RIVERINE CONNECTIVITY (AEHMS 12).pdf | 1.04 MB | Adobe PDF | View/Open |
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