| It needs to be noted that the Sumatran rhino has been on the decline for thousands of years now: https://news.mongabay.com/2017/12/dna-analysis-shows-sumatra... While humans have no doubt accelerated their demise, the overall problem stems from "rising sea levels that submerged the land bridges connecting the islands of Borneo, Java, and Sumatra to the Malay Peninsula and mainland Asia, subsequently fragmenting suitable habitats for the rhino." Finally, Sumatran rhino populations are so small, remote, and fragmented that poaching is less of a concern for this species than issues like land use. |
Payne also noted that the findings reinforced the importance of supporting efforts to prevent the species from going extinct.
“Animal species do come and go over periods that can be most conveniently measured in units of tens of thousands of years,” he said, but added, “To say that we should just let some species go extinct because it is ‘natural’ is nonsense.”