And as glaciers shifted, so did the watershed and so did the border.

随着冰川的移动，分水岭和边界也随之移动。

Hippos reduced tilapia abundance by 41% across the watershed the researchers studied.

在研究人员展开研究的水域，河马令整个水域的罗非鱼数量减少了41%。

And so the watershed moment is what's going to be the international response?

分水岭时刻是国际社会会作何反应？

Most of Italy's land border follows the watershed along the Alps.

意大利的大部分陆地边界沿着阿尔卑斯山脉的分水岭。

On many Alpine peaks, a glacier ridge forms the watershed boundary line and thus the national border.

在阿尔卑斯山脉的许多山峰上，冰川脊形成了分水岭的分界线，从而形成了国家边界。

And, the salmon bring 28% fewer nutrients into the watersheds where they spawn, according to the study.

并且根据该研究结果，在鲑鱼产卵所在的流域，它们带来的养分减少了28%。

And the salmon bring 28 percent fewer nutrients into the watersheds where they spawn, according to the study.

研究表明，鲑鱼带到产卵流域的营养物质减少了28%。

Well, most of the watershed is farmland.

大部分流域都是农田。

Protecting the watershed will help keep that carbon in place.

保护流域将有助于保持碳原位。

But the watersheds have become so degraded that there's not enough woody vegetation available for the beavers to build strong dams.

但由于水域质量严重下降，导致没有足够的木本植物供海狸建造坚固的水坝。

And the salmon bring 28 percent fewer nutrients into the watersheds where they spawn, according to the study.

根据这项研究，鲑鱼为它们产卵的流域带来的营养物质减少了 28%。

And we had to declare a state of emergency. But what the real concern was, was the watershed that supports the salmon hatchery.

我们不得不宣布进入紧急状态。但真正令人担忧的是支持鲑鱼孵化场的流域。

And that is why 10 companies, led by the Nature Conservancy, created the Nairobi Water Fund-to protect the watershed and catchment areas along rivers that supply water to approximately nine million people in Nairobi.

因此10家公司在自然保护协会创立的内罗毕水基金的带领下保护内罗毕大约900万居民生命之源的塔纳河流域和支流地区。

In order to keep this water source pure, these tailings ponds have to be carefully designed and managed, so that mining chemicals don't leach into the ground water below and pollute the watershed of the Continental Divide.

为了保持这个水源的纯净，这些尾矿池必须经过精心设计和管理，这样采矿化学品才不会渗入下面的地下水中，污染大陆分水岭的分水岭。