ecozone
/ˈiːkə(ʊ)zəʊn/ /ˈɛkə(ʊ)zəʊn/noun
1 Palaeontology. A biostratigraphic zone with distinct ecological features.
2 Ecology. A cluster of ecological regions or plant and animal communities.
Origin
1960s. From eco- + zone, originally after French écozone.