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by cbHXBY1D 2584 days ago
These percentages represent the percent of species currently threatened with extinction. The report makes it clear that the conditions which created our current ecological collapse are accelerating:

"Human actions threaten more species with global extinction now than ever before. An average of around 25 per cent of species in assessed animal and plant groups are threatened(figure SPM.3), suggesting that around 1 million species already face extinction, many within decades, unless action is taken to reduce the intensity of drivers of biodiversity loss. Without such action there will be a further acceleration in the global rate of species extinction, which is already at least tens to hundreds of times higher than it has averaged over the past 10 million years."

The report doesn't factor in insect decline and how that will effect the rest of the foodchain (they are the words biggest pollinators). It does bring up the staggering loss of insect biomass:

"Population declines often give warning that a species’ risk of extinction is increasing. The Living Planet Index, which synthesises trends in vertebrate populations, has declined rapidly since 1970, falling by 40% for terrestrial species, 84% for freshwater species and 35% for marine species (established but incomplete){2.2.5.2.4}. Local declines of insect populations such as wild bees and butterflies have often been reported, and insect abundance has declined very rapidly in some places even without large-scale land-use change, but the global extent of such declines is not known (established but incomplete){2.2.5.2.4}. On land, wild species that are endemic (narrowly distributed) have typically seen larger-than-average changes to their habitats and shown faster-than-average declines (established but incomplete)."

Edit: also, in the future, let's refrain from the "not smart enough to understand" style arguments on HN.