Ms. Goldberg has used eDNA testing to confirm the local extinction, disappearance, of a leopard frog in the American state of Idaho.

戈德堡女士使用环境DNA测试来确认美国爱达荷州的豹蛙在当地是否已经灭绝。

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Any species that is not in the climax community is doomed to local extinction and is a fugitive species to a greater or lesser degree.

在不处于顶极状态的群落中的任何一个种，不是注定就地绝灭，就是成为一种在一定程度上的逃亡者。

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Under pressure from humans, the chimpanzee has suffered population decline, habitat fragmentation, and in some places local extinction.

在人类的压力下，黑猩猩们面临了人口下降，栖息地破坏，还有某些地方的灭绝。

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Scientists in New Zealand say they have linked the modern-day decline of a common forest shrub with the local extinction of two pollinating birds over a century ago.

BBC: New Zealand scientists record 'biodiversity breakdown'

But after months of reporting and hundreds of bear sightings, I kept running up against an inconvenient truth: There were a lot of well-meaning, well-credentialed scientists, wildlife officers and local experts who simply didn't believe that polar bears were one ice cube away from extinction.

WSJ: Are Polar Bears Really Disappearing?