Abstract
Polachira wetland in Southern Kerala is a famousdestination of itinerant birds.Thebird aggregation in wetlands is always correlated to the abiotic and biotic factors of the ecosystem. The present investigation reveals the hydrology of the Polachirawetland during February to July 2014. The air and water temperatureagreed with the climatic factors prevailed. The pH showed slight acidity and alkalinity. The total solids fluctuation was renderedby the Total Suspended Solid and Total Dissolved Solid which was indicated by organic discharge, high chloride content and salinity in water. Salinity in water was elevated due to the incursion of saline water from Paravur estuary to Polachira wetland through a canal. The free carbondioxide concentration did not show much variation but dissolved oxygen showed variation. The total hardness which was related to the calcium and magnesium hardness in water was determined.Alkalinity was balance in theecosystem. Nutrients such as nitrite, nitrate, phosphate and silicate were in equilibrium concentration.Correlations of physicochemical parameters among six months were statistically significant.
Highlights
Wetlands are unique landscape which abode a great biodiversity
Nowadays anthropogenic input is elevating beyond a certain threshold level which has a profound impact on the water quality of the aquatic environment.India sustains assorted types of wetlands strewn across various eco- geographical regimes that comprises of wetlands in high altitude Himalayas to Deccan plateau.Kerala is bestowed with the most productive wetlands
Variation of atmospheric temperature in Polachira wetland ecosystem ranged between 30.1 ̊C and 36.6 ̊C during the month of June and March respectively.The present investigation revealed well marked variations in the atmospheric temperature
Summary
Wetlands are unique landscape which abode a great biodiversity. These ecotonesare saturated with countless forms of species of great ecological importance. This sensitive system preserves both aquatic and terrestrial ecosystems.In wetland the species richness is always enveloped around the hydrological regime of the environment. Nowadays anthropogenic input is elevating beyond a certain threshold level which has a profound impact on the water quality of the aquatic environment.India sustains assorted types of wetlands strewn across various eco- geographical regimes that comprises of wetlands in high altitude Himalayas to Deccan plateau.Kerala is bestowed with the most productive wetlands. Wetlands in Kerala are facing dwindling of ecological and economical valuesdue to high populace.The present investigation has been taken up the variations in the hydrology of Polachira wetland in Southern Kerala
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