Author , PERSON@1 , stated that the possum 's population faltered in NUMBER@1 with current habitat -LRB- limited to a 50-square-kilometre area -RRB- under threat from logging .

Author , PERSON@1 , said that the number of possums dropped in NUMBER@1 with their current habitat -LRB- limited to a 50-square-kilometre area -RRB- under threat from logging .
