Endemic fishes in transboundary river basins in Turkey

Sınıraşan nehirler iki veya daha fazla ülke arasında akan nehirlerdir. Türkiye Asya ve Avrupa kıtaları arasında bulunmaktadır. Türkiye’nin 25 akarsu havzasının beşi; Meriç, Asi, Fırat-Dicle, Kura-Aras ve Çoruh iki kıta ve sekiz ülkeyi kapsamaktadır. Türkiye’de sınıraşan nehirlerde dağılım gösteren balık türleri ile ilgili bilgiler yayınlanmış kaynaklar kullanılarak sağlanmış ve bu çalışmada sunulmuştur. Sınıraşan nehir havzalarında tespit edilen 25 familyaya ait 184 balık türünden 30’u (%16) endemiktir. En yüksek ve en düşük endemizm oranı sırasıyla Fırat-Dicle ve Meriç havzalarında tespit edilmiştir. Bölgedeki balıkların çoğu özellikle baraj ve habitat kaybı gibi insan kaynaklı değişikliklerden dolayı tehdit altındadır.

Endemic fishes in transboundary river basins in Turkey

Transboundary rivers flow between two or more countries. Turkey is located between two continents, Asia, and Europe. Five of Turkey's 25 river basins are transboundary named Maritsa, Orontes, Euphrates-Tigris, Kura-Araks and Coruh and spanning two continents and eight countries. All information on fish species distributed in the transboundary river basins in Turkey were gathered and presented in this study using published sources. 184 fish species in 25 families identified in transboundary river basins and 30 of them (16%) are endemic. The highest and lowest rate of endemism were found in Euphrates-Tigris and Maritsa basin, respectively. Most fish species in the area are threatened by human induced changes especially dams and habitat loss.

Keywords:

Endemic fish species, transboundary river Turkey,

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