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A GIS for the Assessment of the Spatio-Temporal Changes of the Kotychi Lagoon, Western Peloponnese, Greece

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  • D. Kalivas
  • V. Kollias
  • G. Karantounias

Abstract

Kotychi lagoon, located at the northwestern coast of Peloponnese, Greece, is a biotope of great ecological and financial importance,protected by the Ramsar International Convention. Kotychi lagoon hasbeen severely degraded and transformed during the past 50 years, due to agricultural activities in the surrounding areas and watercourse alterations after the construction of Pinios river dam in the late 60's. Restoration works (dredging of a hibernation basin and five radial submerged channels) in the period 1989–1992, resulted in the improvement of the lagoon conditions and provided better conditions for the protection of the ecosystem. In this article, a Geographical Information System has been developed to quantify and spatially characterize the temporal changes on lagoon morphology and surface area for the period from 1945 to 1993. The vector database model of the ARC/INFO has enhanced for the handling the temporal changes of the spatial data. Spatial and thematic information concerning the surface area, topography, and the major cover types of the lagoon for years 1945, 1960, 1987 and 1993 was obtained from aerial photographs and land surveys of the area, and was stored in the GIS database. From the spatio-temporal analysis of the stored data, using as a reference surface the lagoon surface at the year 1945, the following conclusions can be drawn. A permanent decrease of the water surface of the lagoon has been observed between the years 1945 and 1987 (from 97.8 to 40.3% of the lagoon reference surface). In 1987 the surface of the lagoon covered by land or swampy areas reached its maximum (59.7% of the reference surface), while in 1993, after the restoration works, the water surface reached the 48.4% while the land and swampy areas decreased to 51.6% of the reference surface. Copyright Kluwer Academic Publishers 2003

Suggested Citation

  • D. Kalivas & V. Kollias & G. Karantounias, 2003. "A GIS for the Assessment of the Spatio-Temporal Changes of the Kotychi Lagoon, Western Peloponnese, Greece," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 17(1), pages 19-36, February.
    • Handle: RePEc:spr:waterr:v:17:y:2003:i:1:p:19-36
    DOI: 10.1023/A:1023066706852
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    References listed on IDEAS

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    1. Vassilios Tsihrintzis & Hector Fuentes & Rao Gadipudi, 1997. "GIS-Aided Modeling of Nonpoint Source Pollution Impacts on Surface and Ground Waters," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 11(3), pages 207-218, June.
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    Cited by:

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    2. B. Yan & X. Su & Y. Chen, 2009. "Functional Structure and Data Management of Urban Water Supply Network Based on GIS," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(13), pages 2633-2653, October.
    3. Ünal Yıldırım & Saffet Erdoğan & Murat Uysal, 2011. "Changes in the Coastline and Water Level of the Akşehir and Eber Lakes Between 1975 and 2009," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(3), pages 941-962, February.
    4. Joseph Awange & Mohammad Sharifi & Godfrey Ogonda & Jens Wickert & Erik Grafarend & Monica Omulo, 2008. "The Falling Lake Victoria Water Level: GRACE, TRIMM and CHAMP Satellite Analysis of the Lake Basin," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(7), pages 775-796, July.
    5. Shimelis Setegn & V. Chowdary & B. Mal & Fikadu Yohannes & Yasuyuki Kono, 2011. "Water Balance Study and Irrigation Strategies for Sustainable Management of a Tropical Ethiopian Lake: A Case Study of Lake Alemaya," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(9), pages 2081-2107, July.
    6. E. Papastergiadou & A. Retalis & A. Apostolakis & Th. Georgiadis, 2008. "Environmental Monitoring of Spatio-temporal Changes Using Remote Sensing and GIS in a Mediterranean Wetland of Northern Greece," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(5), pages 579-594, May.

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