refugium
Concise Oxford English Dictionary © 2008 Oxford University Press:
refugium /rɪˈfjuːdʒɪəm/
▶noun (pl. refugia /-dʒɪə/) Biology an area in which a population of organisms can survive a period of unfavourable conditions.
– origin 1950s: from L., lit. ‘place of refuge’.
'refugium' also found in these Oxford entries:

