期刊
INLAND WATERS
卷 11, 期 4, 页码 538-555出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/20442041.2021.1924034
关键词
fish; habitat loss; irrigation; land-use change; salinisation; waterbird
资金
- TUBITAK program BIDEB 2232 International Fellowship for Outstanding Researchers [118C250]
- EU-H2020, INFRAIA project AQUACOSM [731063]
- AQUACOSM-Plus [871081]
- EU-H2020, PONDERFUL [869296]
- TUBA GEBIP programme
- Turkish Academy of Sciences
The Konya Closed Basin in Turkey is experiencing a decline in water levels and increase in salinity in its lakes and wetlands due to factors like climate warming and intensified farming of water-intensive crops. This has led to the endangerment of waterbird species and loss of breeding species, as well as threats to endemic fish species. Models predict further reductions in water levels and potential deterioration or loss of lake ecosystems in the future.
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.
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