de·pau·pe·rate 
(də-pôpər-ĭt)
(də-pôpər-ĭt)adj.
1. Lacking in variety, especially of species or genes: depauperate island faunas; a genetically depauperate population.
2. Arrested in growth or development; stunted.
[Middle English depauperat, from Medieval Latin dēpauperātus, past participle of dēpauperāre, to make poor : Latin dē-, de- + pauper, poor; see PAUPER.]
de·pau′pe·ration (-pə-rāshən) n.