For one, they serve as secondary seed dispersers.

首先，它们实现了种子的二次传播。

So they play an important ecological role as seed dispersers.

因此，它们作为种子传播者发挥着重要的生态作用。

So it looks like maybe these are the very first dispersers who filled up the continent and became the ancestors of modern Native Americans.

因此看上去这些人类似乎就是最早期的传播者、开拓者，在这片大陆上开枝散叶、繁衍生息，成为现代印第安人的祖先。

The largest declines were in temperate regions, where large mammals that are strong seed dispersers have disappeared.

降幅最大的是温带地区，那里作为强大种子传播者的大型哺乳动物已经消失。

In graduate school, I studied how the loss of a seed disperser, in this case, the winnow ant, affected the plants that they disperse.

在研究生院，我研究了种子传播者（在本例中为扬尘蚁）的损失如何影响它们传播的植物。

Ramos' work, and that of other researchers after him, helped show that the bird was a disperser of the spores of several native fern species and, hence, plays an important role in the natural regeneration of the forest.

拉莫斯以及他之后的其他研究人员的工作帮助表明，这种鸟是几种本地蕨类植物孢子的传播者，因此在森林的自然更新中发挥着重要作用。