I read somewhere some recent research on temperate forests has been published that they behave in much the same way, that individual trees "communicate" with one another to warn others of attacks by insects or other pests, that this communication is chemical, and often carried from tree to tree by interlocking nets of fungi that interconnect different trees (sometimes of DIFFERENT SPECIES!) so they can protect themselves (using chemical defenses) against the invaders. We already know that different trees compete for nutrients, sunlight etc, but we know now that sometimes they cooperate as well! This is not necessarily "conscious" behavior as we identify it, but who knows what other forms of "behavior" some ecosystems have evolved? Anything is possible.

Just think, just a few thousand years ago, a blink in geologic time, vast parts of Europe and North America were under a mile of solid ice. Today, the glacier is gone and these barren, scraped lands are covered with a dense network of biological communities, habitats and ecosystems that have evolved into every niche in those environments. Biogeographical change occurs much faster than biological evolution, and certainly faster than geological activity.
It would not be unreasonable to suspect some form of consciousness was assisting here; not the consciousness of a god or spirit, but something inherent in and emerging from organic life itself.