Instrumental value in nature as a basis for the intrinsic value of nature as a whole

Some environmental ethicists believe that nature as whole has intrinsic value. One reason they do is because they are Struck by the extent to which nature and natural processes give rise to so much that has intrinsic value. The underlying thought is that the value-producing work that nature performs, its instrumentality, imbues nature with a value that is more than merely instrumental. This inference, from instrumental value to a noninstrumental value (such as intrinsic value or systemic value), has been criticized. After all, it seems to rely on the bizarre idea that a thing's instrumental value could be a basis for it's intrinsic value. This idea, however, is not as easy to dismiss as many might think. Review of the obvious arguments that might be deployed to defeat it shows that they have to be rejected, suggesting that a thing's instrumental value could be, and arguably is, a basis for it's intrinsic value. Defending this apparently bizarre idea provides a way of justifying the claim that nature as a whole has intrinsic value.