depauperate
Concise Oxford English Dictionary © 2008 Oxford University Press:
depauperate /dɪˈpɔːp(ə)rət/
▶adjective Biology lacking in numbers or variety of species.
■ imperfectly developed.
– origin ME (in the sense ‘impoverished’): from med. L. depauperat-, depauperare, from de- ‘completely’ + pauperare ‘make poor’.
'depauperate' also found in these Oxford entries:

