What is the theme in The Lost World by Michael Crichton?

The central theme of The Lost World, much as it was in Jurassic Park, is that we respect Nature and life, and that if we regard them as just another commodity it will be at our greatest peril. Crichton is saying that in a world where life forms are now patentable, and where rogue organizations like the fictional InGen or Biosyn companies have the same access to genetic engineering techniques that legitimate laboratories have, we now have a moral obligation and practical reasons to make sure that these new technologies are not used recklessly.