d ▁size ▁since ▁their ▁introduction ▁around ▁ 1 , 0 0 0 ▁years ▁ago , ▁a ▁continued ▁reli ance ▁on ▁char co al ▁as ▁a ▁fuel ▁for ▁cook ing , ▁and ▁the ▁increased ▁prom in ence ▁of ▁coffee ▁as ▁a ▁c ash ▁c rop ▁over ▁the ▁past ▁century . ▁According ▁to ▁a ▁conserv ative ▁estimate , ▁about ▁ 4 0   percent ▁of ▁the ▁island ' s ▁original ▁forest ▁cover ▁was ▁lost ▁from ▁the ▁ 1 9 5 0 s ▁to ▁ 2 0 0 0 , ▁with ▁a ▁thin ning ▁of ▁remaining ▁forest ▁areas ▁by ▁ 8 0   percent . ▁In ▁addition ▁to ▁traditional ▁agricult ural ▁practice , ▁wild life ▁conservation ▁is ▁challeng ed ▁by ▁the ▁ill ic it ▁har vest ing ▁of ▁protected ▁for ests , ▁as ▁well ▁as ▁the ▁state - san ction ed ▁har vest ing ▁of ▁pre cious ▁woods ▁within ▁national ▁par ks . ▁Although ▁b anned ▁by ▁then - Pres ident ▁Marc ▁R aval oman ana ▁from ▁ 2 0 0 0 ▁to ▁ 2 0 0 9 , ▁the ▁collection ▁of ▁small ▁quantities ▁of ▁pre cious ▁tim ber ▁from ▁national ▁par ks ▁was ▁re - author ized ▁in ▁January ▁ 2 0 0 9 ▁and ▁dram atically ▁intens ified ▁under ▁the ▁administration ▁of ▁And ry ▁R ajo el ina ▁as ▁a ▁key ▁source ▁of ▁state ▁reven ues ▁to ▁offset ▁cut s ▁in ▁don or ▁support ▁following ▁R aval oman ana ' s ▁ou st ing . ▁ ▁In vas ive ▁species ▁have ▁like wise ▁been