Normally, both natural and artificial persons have responsibilities as well as rights. But a gorilla or a river obviously can't have responsibilities... Therefore at most they can be considered a rather limited kind of person, more like a human infant or an intellectually incapable adult than a regular human or an organisation of regular humans. Then of course it falls to humans to determine what the best interests o…
and it would be simpler to pursue conservation ends without it. I doubt it. Look at corporate personhood and how it applies to Citizens United, being able to sue and tax a corporation, etc. Also look at how conservation protections have been put in place over the years compared to corporate protections. Treating corporations as a "person" opened the doors for a lot of simpler legal tools.
I agree with your thought, but not sure how to make the responsibility part fit in.