An sami babban ƙalubale ga muhalli da halittun Haiti. Sarke dazuzzuka a Haiti ya bar kusan kashi 30% na gandun daji a halin yanzu. Tsibirin Hispaniola yana gida ne ga tsire-tsire sama da 6,000, waɗanda 35% ke da yawa; da nau'in tsuntsaye 220. Babu ɗaya daga cikin tsuntsayen da ke fama da cutar Haiti, amma La Selle thrush yana kusan haka. Asalin ɗimbin halittun ƙasar ya samo asali ne saboda yanayin yanayin tsaunuka da kuma sauye-sauyen tsaunuka waɗanda kowane tudu ke ɗauke da ƙananan yanayi daban-daban. Daban-daban shimfidar wurare na ƙasar sun haɗa da dazuzzukan gajimare masu ɗorewa (a cikin wasu jeri na tsaunuka da wuraren da aka kiyaye), tudun duwatsu masu tsayi, bushewar hamada, dajin mangrove, da rairayin bakin teku masu na bishiyar dabino . Tun lokacin da ɗan asalin ƙasar Haiti ya zo da, ɗimbin halittun Haiti ya ragu sosai saboda cin zarafin ɗan adam. Misali, hatimin sufi na Caribbean, wanda kawai ya taɓa faruwa a cikin Caribbean, yanzu ya ƙare. Baya ga zaizayar kasa, sare dazuzzuka a Haiti ya haifar da ambaliya lokaci-lokaci, kamar yadda aka gani a ranar 17 ga Satumban shekarata 2004.