Environmental Indicators
Environmental Indicators
9.2- Invasive Alien Species

The indicator is a pressure indicator since invasive alien species poses threat on indigenous species and habitats.

While the number of invasive alien species in Turkish seas was 263 in 2005, this number increased to 422 in 2011 and approached to 500 in 2017.

While most of the invasive species in the Mediterranean sea come through the Suez Canal, most of those in Black Sea are transported to the Black Sea via the ballast waters of vessels.

In the inland waters, 25 invasive alien species have been identified as of 2017 [50].