Zulxhevat Abdija1, Suzana Aliu1, Selim Jusufi2 1 – State University of Tetovo – Tetovo – Macedonia, 1-State University of Tetovo–Struga-Macedonia 2 – University of Prishtina – Pristina – Kosovo zana.aliu@yahoo.com   Abstract Ecological system depends on every link in the food chain. Last decades the majority of surface water is perserved into canals or collectors […]