It's interesting that the image used for the article, from the windward side of Oahu, shows only invasive species (or maybe that's the point). Ironically, the biodiversity of plants on the Hawaiian Islands has increased tremendously since the arrival of man. The graphic shows 79 species of plant lost. Anyone that's been to Hawaii knows there are far more than 79 introduced plant species.

I'm not saying this is a good thing by any means, but it's interesting to see that novel forests of invasive species are still maligned even if they contain a greater number of species/area than what was displaced. If anyone is interested in this comment, I can unearth at least one paper that examines these values.

In the end, I suppose we value the total number of different species in existence, and as that number decreases, there is a Great Loss. Yet I do like to mull over why conservationists favor native species that are struggling to survive over the introduced that are flourishing, often at great economic cost to control said invasives.

Note: this comment only considers plant species, which probably makes it very uninformed and bad. Take it with a grain of salt.