Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Danube Delta' has mentioned 'Species' in the following places:
Occurrence Sentence Text Source
As a young region in full process of consolidation, the Danube Delta represents a very favourable place for the development of highly diverse flora and fauna, unique[clarification needed] in Europe, with numerous rare species.
There are over 320 species of birds found in the delta during summer,[11] of which 166 are hatching species and 159 are migratory.
It is an environment rich in plankton, worms, molluscs, grubs, and sponges, with numerous species of fish, such as the carp, pike, pike perch, sheat-fish, and freshwater sturgeons (sterlet, Vyza[check spelling] and Danube mackerel[check spelling]).
The East Asian raccoon dog (Nyctereutes procyonoides), bizam/introduced muskrat (Ondatra zibethica), and to some extent South American nutria (Myocastor coypus), are recent species that have successfully adapted.