If There Is No Global Warming from Whatever the Cause, What Is the Explanation for the Decline of Fisheries and Death of Sea Birds?

https://www.paulcraigroberts.org/2019/12/10/if-there-is-no-global-warming-from-whatever-the-cause-what-is-the-explanation-for-the-decline-of-fisheries-and-death-of-sea-birds/