How can we protect moss biodiversity from extinction when barely know most of the species?
Irreplaceable sources of benefit.
Some examples of when combating extinction might be a mistake.
Finding concentrations of neglected, under-researched, unprotected species of high evolutionary distinctiveness: a case study in bryophytes
Defining biodiversity by species doesn't work.
Putting things back the way they were means actively changing things from how they are now. Deciding what to conserve is hard, and flows from a diverse range of motivations.