The Wisdom of Ants is a Ditmar Award-winning science fiction short story by Thoraiya Dyer. Her web site describes it as "sharks, creepy crawlies and betrayal".
You can read it online here. No wonder it's an award-winner! An enjoyable story for me.
Locus Magazine has a review that says, "A strong sense of ecology informs this piece, the interdependence of humans and their natural environment, and the perils of attempting to alter or ignore it." SF Revu says, "A well-realized world makes this a good story."