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- Title
Seasonal variation in physicochemical properties of coastal waters of Kalpakkam, east coast of India with special emphasis on nutrients.
- Authors
Satpathy, K. K.; Mohanty, A. K.; Natesan, U.; Prasad, M. V. R.; Sarkar, S. K.
- Abstract
A study pertaining to the seasonal variation in physicochemical properties of the coastal waters was carried out at Kalpakkam coast for a period of 1 year (February 2006 to January 2007). It revealed that the coastal water was significantly influenced by freshwater input during North East (NE) monsoon and post-monsoon periods. Concentration of all the nutrients and dissolved oxygen (DO) was relatively high during the NE monsoon, whereas, salinity and chlorophyll- a (chl- a) were at their minimum level during this period. Phytoplankton production peak was observed in summer during which a typical marine condition prevailed. The present observed values of nitrate, phosphate, silicate, and turbidity are significantly high (five to ten times) compared to that of the pre-Tsunami period from this coast. Relatively low DO and chl- a concentration was noticed during the post-Tsunami period. A notable feature of this study is that though nutrient concentration in the coastal waters during post-Tsunami period has increased significantly, turbidity, the most single dominating factor, was found to adversely affect the phytoplankton production during post-Tsunami period as reflected by relatively low chl- a concentration. Thus, the post-Tsunami period may result in a change in coastal biodiversity pattern concomitant with change in coastal water quality.
- Subjects
KALPAKKAM (India); INDIA; BIODIVERSITY; WATER pollution; WATER quality; BIOLOGY
- Publication
Environmental Monitoring & Assessment, 2010, Vol 164, Issue 1-4, p153
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-009-0882-0