Poaching and habitat destruction threaten African elephants throughout their range.
偷猎和栖息地被破坏威胁着非洲象的生活范围。
2
On the periphery of its range, populations have declined, primarily due to habitat modification, dam construction, river flow modification, wetland drainage, and pollution.
With a population of about 180,000, the whooper, though vulnerable to loss of habitat, is among the most abundant of swans and trumps others in the sweep of its range.