Mapping Lagoonal Features and Their Variability: Field Observations and Remote Sensing Implications
Lagoons have been historically important as sheltered sites of habitation providing access to both the land and the sea, comprising 15% of the world coastal zone, in which lakes, salt marshes, tropical mangroves, swamps and deltas are also included. Natural changes resulting from physical, chemical, geological, and biological factors and the influence of climatic changes will alter the essential character of the lagoon and hence the ecosystem. For example, excessive runoff due to flood during heavy rainfall may cause a chain of events like increase in sediment load leading to turbidity which tends to reduce sunlight penetration which in turn gives rise to lowered primary productivity. Long term unpredictable climatic variations such as tidal waves, hurricanes, cyclonic storms might also cause irreversible changes through sediment loading, alteration of flushing rates of lagoons and production processes (Fisher et al., 1972). So it is important that the maximum benefit from these areas be obtained without jeopardizing the future options or continued use.
KeywordsZinc Toxicity Magnesium Chlorophyll Silicate
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- Barnes, R.S.K., 1980. Coastal Lagoons. Cambridge studies in Modern Biology, 1, 105p.Google Scholar
- Boyacioglu, H., 2006. Surface water quality assessment using factor analysis. Water SA., 32: 389–393.Google Scholar
- Chilika, 2001. Chilika—A new lease of life. Chilika Development Authority, Bhubaneswar, Orissa. pp 13.Google Scholar
- Mishra, B.N., 2004. Landuse/Landcover studies of Chilika lagoon, east coast of India—A Remote Sensing and GIS approach. Berhampur University, Master of Philosophy’s thesis, 29p.Google Scholar
- Mohanty, P.K., Pal, S.R. and Mishra, P.K., 2001. Monitoring ecological conditions of a coastal lagoon using IRS Data: A case study in Chilika, East Coast of India. Journal of Coastal Research, Special Issue 34: (ICS 2000 Proceedings) 459–469.Google Scholar
- Nichols, M. and Allen, G., 1981. Sedimentary processes in coastal lagoons. Coastal Lagoon Research, Present and Future. UNESCO Technical Papers in Marine Science, 33: 27–80.Google Scholar
- Panigrahi, S.H., 2005. Seasonal variability of phytoplankton productivity and related physico-chemical parameters in the Chilika lake and its adjoining sea. Berhampur University, Doctor of Philosophy’s thesis, 258p.Google Scholar
- Panigrahy, P.K., Das, J., Das, S.N. and Sahoo. R.K., 1999. Evaluation of the influence of various physico-chemical parameters on coastal water quality, around Orissa, by factor analysis. Ind. J. Mar. Sci., 28: 360–364.Google Scholar
- Parsons, T.R., Maita, Y. and Lalli, C.M., 1984. A manual of Chemical and Biological Methods for Seawater Analysis. Pergamon Press, New York, 173p.Google Scholar
- Phleger, F.B., 1981. A review of some general features of coastal lagoons. Coastal Lagoon Research, Past, Present and Future, UNESCO Technical Papers in Marine Science, 33: 7–14.Google Scholar
- Praus, P., 2005. Water quality assessment using SVD-based principal component analysis of hydrological data. Water SA., 31: 417–422Google Scholar
- Witzig, S. and Whitehurst, C., 1981. Literature review of the current use and technology of MSS digital data for lake tropic classification. In: Proceedings of the 1981 Fall Meeting of the American Society of Phtotogrammetry, San Francisco, pp.1–20.Google Scholar