NDLI: Land use changes and associated environmental impacts on the Mediterranean shallow Lake Stymfalia, Greece

Content Provider	Springer Nature Link
Author	Papastergiadou, E. S. Retalis, A. Kalliris, P. Georgiadis, Th.
Copyright Year	2007
Abstract	Land cover and land use changes affect ecological landscape functions and processes. Land use changes mainly caused by human activities, is a common reason for wetlands degradation worldwide. Lake Stymfalia, located at Peloponnese, southern Greece, is an ancient wetland with a great ecological value. Lake Stymfalia has been severely degraded and transformed during the past 60 years due to agricultural activities in the surrounding areas and watercourses alterations. In this context, we investigated the land cover/ use changes and the role of the reed beds in the terrestrialization process of this shallow wetland. This particular effort utilized remotely sensed data and Geographical Information Systems (GIS) techniques to estimate land use alterations for the period 1945–1996. Patch related landscape indices were generated to analyze impacts on landscape features. Spatial and thematic information concerning the surface area and the major land cover types of the lake for years 1945, 1960, 1972, 1987, 1992, and 1996 was obtained from aerial photographs and land surveys of the area, and was stored in the GIS database. The 1996 map was ground verified, corrected and updated to 2004 conditions. From the spatio-temporal analysis of the stored data, a permanent decrease of the open water surface has been observed between the years 1945 and 1996. The results indicated that the reed beds expanded dramatically, increasing by 89.3%, and is the predominant aquatic vegetation of the whole wetland. Open water areas and wet meadows decreased by 53.7 and 96.5% respectively. Landscape analyses and, in particular, the use of selected landscape metrics, proved useful for detecting and quantitatively characterising dynamic ecological processes. As land cover/use analysis of the wetland has shown much serious environmental degradation, conservation measures should be undertaken urgently.
Starting Page	361
Ending Page	372
Page Count	12
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	584
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2007-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aerial photography Remote sensing GIS Land cover/use Landscape metrics Reed beds Hydrobiology Ecology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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