The way I understand the way a forest works as described in the LOO and other similar sources is they end up being a mind/body/spirit complex as a whole. So if you imagine for a moment the whole organism of the forest being "damaged" as one might injure their body(destroying that portion of flesh). But this damaged portion was healed via enhanced re-growth / healing of the area. So it would be more like recovering from an injury in the case of the forest, not like millions of unique awareness's of each tree getting killed.
I'm sure there was some fauna was killed along with all the flora, though. I'm sure these factors were carefully considered(their compassion for all life, weighed against the particularly complicated fragile state our planetary societal structure takes on) by the confederation and they would have detonated it out in space or recovered it if they thought the could have done so safely.
Edited: for dropped word
I'm sure there was some fauna was killed along with all the flora, though. I'm sure these factors were carefully considered(their compassion for all life, weighed against the particularly complicated fragile state our planetary societal structure takes on) by the confederation and they would have detonated it out in space or recovered it if they thought the could have done so safely.
Edited: for dropped word