What’s the elevator pitch to convince a skeptic that biodiversity is important? To people who value nature for its own sake and believe it is immoral to destroy it, maybe it seems as though the pitch should not be needed. But it’s needed, considering the difficulties communicating the practical/economic case against global warming when that case should be fairly obvious (reliability of the food supply; cost of food, energy, and water; cost to protect, relocate or abandon coastal cities; impacts of extreme weather, drought and fire inland).
Of course, the practical/economic case to fight biodiversity loss has to do with how much our civilization relies on free ecosystem services, and has neither the level of technology nor wealth to replace them in the near term. I believe many people will respond to the ethical case too, and more would if we emphasized ethics more in children’s education. But this paragraph is already too long for an elevator pitch now, isn’t it.
Here are a couple articles that talk about bolstering both the science and the communications.