| Ecosystem |
| Big ecosystem |
| Eco-community |
| Region of life |
| Tundra or taiga |
| Desert or tundra |
| Ecological region |
| Tundra or wetland |
| Ecological formation |
| Rainforest or tundra |
| Ecological community |
| Taiga or tundra, e.g. |
| Tundra or rain forest |
| Savanna or rain forest |
| Wetland or rain forest |
| Major ecological region |
| Grassland or rain forest |
| Tropical rainforest, e.g. |
| Complex ecologic community |
| Major ecological community |
| Tropical rain forest, e.g. |
| Tundra or coral reef, e.g. |
| Group of similar ecosystems |
| Complex ecological community |
| Tropical rain forest or desert |
| Tropical rain forest or wetland |
| Community of plant and animal life |
| Animal and plant community like a desert or tundra |