Critical Threshold (Daedalus Mission, #2)

Dendra is a stable world, covered by a huge, unchanging forest—except that nothing living can really be free of change. The planet has no seasons, but its animal life still undergoes life-cycles involving birth, maturation, metamorphosis, and death. The Earth colony sent to tame the world has failed, at least in the terms expected of it, and seems beyond redemption; but the crew of the Daedalus still has to find out exactly why and how the program has gone wrong. Provided, of course, that they can survive the investigation itself!