Decadal changes in size, salinity, waterbirds, and fish in lakes of the Konya Closed Basin, Turkey, associated with climate change and increasing water abstraction for agriculture

Yilmaz, Gultekin
Colak, Mehmet Arda
Özgencil, İbrahim Kaan
Metin, Melisa
Korkmaz, Mustafa
Ertugrul, Serhat
Soyluer, Melisa
Bucak, Tuba
Tavsanoglu, U. Nihan
Özkan, Korhan
Akyürek, Sevda Zuhal
Beklioğlu, Meryem
Jeppesen, Erik
The Konya Closed Basin (KCB) in Turkey has a cold semiarid to warm Mediterranean climate and hosts the largest Turkish freshwater lake, Lake Beysehir, and the iconic saline Lake Tuz. Using published as well as our own ground-truth and remote sensing data, we provide (1) a brief description of the paleoenvironmental changes in the KCB; followed by (2) a detailed description of the changes in land use, crop farming, groundwater and surface water levels, and climate; and (3) associated changes in lake water surface area and salinity as well as in waterbird and fish communities during the past 40 years. The KCB is intensively farmed, and the farming of mainly water intensive crops has increased substantially, especially since 2000. This, combined with climate warming, has led to a substantial rate of reduction of the groundwater level (up to 1 m/yr) and the surface area of the lakes and wetlands, followed by an increase in salinisation, and even complete loss of several wetlands. Three globally threatened waterbird species face extinction in the basin, and 18 of the 62 previous breeding species have already been lost. The KCB has 38 fish species, of which 74% are endemic and 61% are considered threatened or near threatened. Modelling projections using various climate and land use scenarios predict serious additional reductions of the water level in the future due to climate change, leading to deterioration (or complete loss) of lake ecosystems and the services they provide.


Integrated Watershed Management for Lake Mogan with the focus of Agricultural Diffuse Pollution
Özcan, Zeynep; Başkan, O; Düzgün, Hafize Şebnem; Kentel, Elçin; Alp, Emre (2015-09-25)
Lake Mogan located 20 km south of Ankara, Turkey has a watershed area of 970 km2, and it is dominated by areas with dry agricultural practices (50%) and graze lands (31%). Intense agricultural activities and fast urbanization rates are the most important factors affecting the water quality in Lake Mogan. There has been several management alternatives suggested to improve the water quality in Lake Mogan. In 2008, the municipality implemented lake augmentation strategy to increase the water level since it dro...
Evaluation of the best management practices to control agricultural diffuse pollution in lake mogan watershed with swat model
Özcan, Zeynep; Alp, Emre; Kentel Erdoğan, Elçin; Department of Environmental Engineering (2016)
Lake Mogan which is located in Gölbaşı County, Ankara, Turkey is one of the most important wetlands of Turkey and it was declared as Special Environmental Protection Region in 1990. Total area of semi-arid Lake Mogan watershed is 970 km2 and dry farming is practiced approximately in 40% of the basin. Therefore, agricultural diffuse source pollution is a serious concern in the watershed. In the context of this thesis, the effects of implementation of different agricultural best management practices on sedime...
Quality Assessment of the Armourstones for Some Black Sea Rubble Mound Breakwaters, Turkey
Ozden, U. A.; Topal, Tamer (2007-01-01)
The Black Sea coastline is a hazardous region in Turkey, especially in winter, due to the dominant wave action. Therefore, rubble mound breakwaters used as ship shelters are vital structures, especially for the fishermen. Construction of the breakwater requires good quality, durable armourstones. Due to the nature of the rubble mound breakwaters, armourstones of various sizes and types are used in the construction of these structures. The deterioration of these armourstones with time may result in the failu...
Tsunami risk assessment using GIS-based multi criteria decision analysis at Bakirköy, İstanbul
Tüfekçi, Duygu; Süzen, Mehmet Lütfi; Yalçıner, Ahmet Cevdet; Department of Geological Engineering (2016)
Northern coast of the Sea of Marmara hosts many of coastal facilities. Bakırköy is one of the most critical coastal districts of İstanbul with the importance of air and marine transportation. There are many other coastal facilities and structures in Bakırköy district such as marinas, small scaled craft harbors, water front roads and business centers that are prone to suffer from the marine disasters. In the history, the Sea of Marmara has experienced numerous earthquakes and associated tsunamis. Therefore, ...
Wave climate study for an LNG terminal near Marmara Ereglisi, Turkey
Akyarli, Adnan; Yalçıner, Ahmet Cevdet (1997-01-01)
A liquefied natural gas (LNG) terminal has been constructed near Marmara Ereglisi - a coastal town located at the northern coast of the Sea of Marmara in Turkey - to unload imported LNG from Algeria. Regarding the wave related issues in the design of the terminal and offshore operations, a wave climate study - comprising direct wave measurements carried out by a directional type wave buoy during one year period and hindcasting studies based on ten years of hourly wind data recorded at Tekirdag meteorologica...
Citation Formats
G. Yilmaz et al., “Decadal changes in size, salinity, waterbirds, and fish in lakes of the Konya Closed Basin, Turkey, associated with climate change and increasing water abstraction for agriculture,” INLAND WATERS, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: