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Effects of Anthropogenic Influences on the Trophic State, Land Uses and Aquatic Vegetation in a Shallow Mediterranean Lake: Implications for Restoration

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  • E. Papastergiadou
  • I. Kagalou
  • K. Stefanidis
  • A. Retalis
  • I. Leonardos

Abstract

Lake Pamvotis, NW Greece is a shallow Mediterranean eutrophic lake that has changed drastically over the past 50 years. Strong effects, resulted mainly from anthropogenic causes, in the hydrological regime are shown for this area using long term hydrological data and a GIS system for extracting land cover/use changes. A set of aerial imagery acquired in 1945 through 2002 were used to monitor and assess the spatial and temporal changes in land cover/use, focused mainly on the lake’s surface area and its surrounding ecosystem (Natura 2000 area). The significance of the changes in land cover/use distribution within Pamvotis wetland is further discussed depicting the role of the anthropogenic influence on the fragile ecosystem that resulted in the shrinkage of lake’s habitats extent. The purpose of this analysis was to examine the long-term changes on macrophyte community composition, species occurrence and relative abundance with water quality and water level changes over the past century, using historical data, aerial photos and GIS techniques. The results showed that for the last 25 years annual water level fluctuation ranged from 70 to 159 cm. Water level starts decreasing in mid June and increasing again gradually from November until March–April. Intra annual water level fluctuation seems to be affected by land use for agricultural purpose through intensive irrigation and the summer drought as well. A dramatic decline of the submerged vegetation is apparent mainly attributed to anthropogenic pressures. Regarding the land cover/use changes, the most notable and significant alterations are concerning the urban development around the lake, the disappearance of wet meadows and the extension of reed beds. Finally it seems that water budget data as well as the response of the key eutrophication parameters are affected from both hydrological alterations and point/non-point pollution sources. Copyright Springer Science+Business Media B.V. 2010

Suggested Citation

  • E. Papastergiadou & I. Kagalou & K. Stefanidis & A. Retalis & I. Leonardos, 2010. "Effects of Anthropogenic Influences on the Trophic State, Land Uses and Aquatic Vegetation in a Shallow Mediterranean Lake: Implications for Restoration," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 24(3), pages 415-435, February.
    • Handle: RePEc:spr:waterr:v:24:y:2010:i:3:p:415-435
    DOI: 10.1007/s11269-009-9453-y
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    References listed on IDEAS

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    1. N. Mantzafleri & A. Psilovikos & A. Blanta, 2009. "Water Quality Monitoring and Modeling in Lake Kastoria, Using GIS. Assessment and Management of Pollution Sources," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(15), pages 3221-3254, December.
    2. 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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    Cited by:

    1. Xiao Pu & Hongguang Cheng & Lu Lu & Shengtian Yang & Jing Xie & Fanghua Hao, 2015. "Spatial Profiling and Assessing Dominance of Sources to Water Phosphorus Burden in a Shallow Lake," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 29(3), pages 715-729, February.
    2. Francis Rathinam & Sayak Khatua & Zeba Siddiqui & Manya Malik & Pallavi Duggal & Samantha Watson & Xavier Vollenweider, 2021. "Using big data for evaluating development outcomes: A systematic map," Campbell Systematic Reviews, John Wiley & Sons, vol. 17(3), September.
    3. Konstantinos Stefanidis & George Varlas & Anastasios Papadopoulos & Elias Dimitriou, 2021. "Four Decades of Surface Temperature, Precipitation, and Wind Speed Trends over Lakes of Greece," Sustainability, MDPI, vol. 13(17), pages 1-14, September.

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