建立要求
生态系统建立前，该区域所需绘制的地形、自然目标和水。
地形：草地、土、湿地沉积物、积水
另需：水域
| 自然目标 | 数量 |
|---|---|
| Freshwater Bed Plants | at least 175 |
| Semi-Aquatic Plants | at least 450 |
| Bushes | at least 100 |
| Semi-Aquatic Trees | at least 20 |
繁荣要求
野放的动物必须填满的物种角色，已建立的生态系统才会繁荣。
| 物种角色 | 填补它的物种 |
|---|---|
| Aerial Seed Dispersers | Great Hornbill, Greater Flamingo, Long-Tailed Parakeet |
| Wetland Engineers | Asian Small-Clawed Otter, Common Hippopotamus, Eurasian Beaver |
| Underwater Grazers | Blunthead Cichlid, Common Rudd, Giant Gourami |
