Complex sentence: Dr. Zetek was the Founding Director of the Canal Zone Biological Area (CZBA), located on Barro Colorado Island, Panama, and served as Resident Manager from 1923-1956.
Split into simpler sentences: Dr. Zetek was the Founding Director of the Canal Zone Biological Area (CZBA), located on Barro Colorado Island, Panama. He served as Resident Manager from 1923-1956.