National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation has been carried out for determining the various physico-chemical and biological parameters prevailing in Vembanad Lake of Panangad region, Kochi. The water samples were collected fortnightly from the Panangad-Kumbalam region for a period of ten months (September, 2015 to June, 2016). Meteorologically the whole study period can be classified as South west monsoon (September, 2015), Post-monsoon (October -November, 2015), North east monsoon (December, 2015 to March 2016), Pre-monsoon (April May, 2016) and beginning of south west monsoon (June, 2016). The analysis showed that the mean maximum temperature was 30.75OC during post monsoon, the mean maximum pH was 7.99 during post monsoon, the mean maximum DO was 6.22mg/l during post monsoon, the mean maximum alkalinity was 144.5mg/l during south west monsoon, the mean maximum transparency was 73.37 during north east monsoon, the mean maximum nitrite was 1.48mmol/l during south west monsoon (2015), the mean maximum nitrate was 1mmol/l during south west monsoon (2016) and the mean maximum phosphate was 4.13mmol/l during south west monsoon (2016) were recorded. Among phytoplankton diatoms are most dominant species in this region. Among zooplankton copepods are dominantly seen in the study region. Among aquatic weeds, Eichornia crassipes was dominantly seen in all the seasons. Five species of shellfishes are collected during the study period which are belongs to the order Decapoda. 24 species of fin fishes are collected during the study period from study area. The fishes can be categorized into eight orders and 18 families.
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