| Answer | Crossword Clue |
|---|---|
| SERAL | Pertaining to ecological series |
| seral | pertaining to a series of ecological changes |
| SERAL | Pertaining to ecological communities |
| SERAL | Pertaining to ecological stages |
| ecotonal | pertaining to an ecotone (a type of ecological zone) |
| catenary | of or pertaining to a chain or linked series |
| episodic | pertaining to an episode (a series of events forming digression) |
