Complex sentence: The White-breasted Cormorant, a member of the cormorant family Phalacrocoracidae, is usually treated as a subspecies of Great Cormorant, in which case it is referred to as "Phalacrocorax carbo lucidus".
Split into simpler sentences: The White-breasted Cormorant ("Phalacrocorax lucidus ") is a member of the cormorant family Phalacrocoracidae. It is sometimes treated as a subspecies of the Great Cormorant, in which case it is referred to as"Phalacrocorax carbo lucidus".