| ecosystem stability(noun, expression, entity, nature, system) |
| ecosystem study(noun, expression, entity, nature, system) |
| ecosystem viability(noun, expression, entity, nature, system) |
| ecosystem vulnerability(noun, expression, entity, nature, system) |
| energy flow(noun, expression, system, complex, interaction) |
| nutrient cycling(noun, expression, system, complex, interaction) |
| primary production(noun, expression, system, complex, interaction) |
| temperate ecosystem(noun, expression, entity, system, complex) |
| desert(noun, nature, type, system) |
| large marine ecosystem(noun, expression, nature, type, system) |
| littoral zone(noun, expression, nature, type, system) |
| natural ecosystem(noun, expression, entity, study, science) |
| riparian zone(noun, expression, nature, type, system) |
| river ecosystem(noun, expression, nature, type, system) |
| subsurface lithoautotrophic microbial ecosystem(noun, expression, nature, type, system) |
| wetland(noun, nature, type, system) |
| biotic factor(noun, ecology, living, enviroment) |
| Antarctic coastal ecosystem(noun, expression, entity, system, complex) |
| Antarctic ecosystem(noun, expression, entity, system, complex) |
| Antarctic shelf ecosystem(noun, expression, entity, system, complex) |