The human threat to wildlife is driving the current mass extinction crisis, experts warn.
The biggest killers of wildlife globally are unsustainable hunting and harvesting, and the conversion of huge swathes of natural habitat into farms, housing estates, roads and other industrial activities. There is little doubt that these threats are driving the current mass extinction crisis.
A male lion, his lioness, and four cubs stand together in the long dry grass in Botswana. Lions were among the threatened species studied by the researchers. Getty Images Mapping the risksWe only mapped threats within a species location if those threats are known to specifically endanger that species. For example, the African lion is threatened by urbanization, hunting and trapping, so we only quantified the overlap of those specific hazards for this species.
Conversely, we found more than 1,000 species that were not impacted by human threats at all. Although this is positive news, it is important to note that we have not mapped every possible threat, so our results likely underestimate the true impact. For example, we didn’t account for diseases, which are a major threat to amphibians, or climate change, which is a major threat to virtually all species.
We also created a global map of coolspots by combining the parts of species ranges that are free from human threats. This map identifies the last vestiges of wild places where threatened species have shelter from the ravages of guns, snares and bulldozers. As such, these are crucial conservation strongholds.
An obvious first step is to secure threat-free refuges for particular species, via actions such as protected areas, which are paramount for their survival.
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