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Wetlands Ecology and Management

, Volume 15, Issue 2, pp 113–126 | Cite as

Anthropogenic impact on water quality of Chilika lagoon RAMSAR site: a statistical approach

  • Satyanarayan PanigrahiEmail author
  • Bhaskar Chandra Acharya
  • Rama Chandra Panigrahy
  • Bijaya Ketan Nayak
  • Kaustav Banarjee
  • Santosh Kumar Sarkar
Original Paper

Abstract

This paper investigated the spatio-temporal variability of water quality parameters (transparency, salinity, dissolved oxygen, nutrients viz. NH3-N, NO2-N, NO 3 -N, PO 4 3 -P, total nitrogen, total phosphorous and chlorophyll-a) in Chilika lagoon during 2001–2003 in order to better understand its ecological characteristics. Marked spatial and seasonal variations were detected with respect to almost all parameters studied. Northern sector of the lagoon is more affected by the anthropogenic stress from the catchments than the southern sector. Addition of nitrogen and phosphorous compounds to the lagoon mainly occurred through the drainage from agricultural lands and river run off during the early months of paddy cultivating seasons. Phytoplankton productivity of the lagoon was nitrogen limited, as suggested by nitrogen to phosphorous ratio. Processes affecting the water quality of the lagoon system included agricultural drainage, sewage intrusion, macrophyte litter fall and exchange of water between lagoon and the sea (Bay of Bengal). Further in depth study pertaining to quantification of exogenous material input and their disposal is recommended to ensure proper management of the lagoon and its resources.

Keywords

Analysis of variance and covariance Chilika lagoon Chlorophyll-a Nutrients Physicochemical parameters Principal component analysis 

Notes

Acknowledgements

The authors wish to express their gratitude to the Director, RRL, Bhubaneswar for his keen interest and kind permission to publish the paper. Thanks are also due to all involved in COMAPS and MOP coastal processes project. The first author gratefully acknowledges Council of Scientific and Industrial Research, India for the fellowship grant to carry out the study.

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • Satyanarayan Panigrahi
    • 1
    Email author
  • Bhaskar Chandra Acharya
    • 1
  • Rama Chandra Panigrahy
    • 2
  • Bijaya Ketan Nayak
    • 3
  • Kaustav Banarjee
    • 4
  • Santosh Kumar Sarkar
    • 5
  1. 1.Marine Pollution Monitoring CellRegional Research LaboratoryBhubaneswarIndia
  2. 2.Department of Marine SciencesBerhampur UniversityBerhampurIndia
  3. 3.Regional Research LaboratoryBhubaneswarIndia
  4. 4.Department of StatisticsSt. Xavier’s CollegeCalcuttaIndia
  5. 5.Department of Marine SciencesUniversity of CalcuttaCalcuttaIndia

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