That's what a keystone species does in an ecosystem.

那就是拱顶石物种在生态系统中的作用。

Because complex species interactions may be involved, identifying a keystone species by removing the species and observing changes in the ecosystem is problematic.

由于其中可能涉及复杂的物种相互作用，通过移除一个关键物种并观察生态系统的变化来确定该物种是有问题的。

It might seem that certain traits would clearly define a species as a keystone species.

似乎某些特征会清楚地将一个物种定义为关键物种。

The environmental community has tried to build public awareness using keystone species, like the panda or koala.

环境社会试图提供公众意识，用重要的物种，如熊猫、考拉来做宣传。

Based on the research of the keystone species, the concept of species importance (SI) was first advanced in this paper.

在对关键种的研究基础上，首次提出了物种重要性(SI)概念。

And we need them — they are keystone species for everything from building coral reefs to anchoring the ocean food chain to making a killer linguine and clam sauce.

而且我们也需要它们——它们是从建造珊瑚礁，到稳固海洋食物链，再到美味的蛤蜊酱意面的关键物种。

This paper discussed the keystone species concept and introduced the typical characteristics of keystone species and their identification in communities or ecosystems.

在本文中，对关键种的概念进行了讨论，并介绍了关键种的典型特征及其在群落和生态系统中的判别。

Figs (Ficus SPP., Moraceae) are important fruit resources for many frugivores, particularly during the period when other fruits are scarce, and so be called "keystone species".

榕属植物为多种食果动物重要的食物资源，特别是在其他果实缺乏的季节，因此有关键物种之称。

They're what ecologists call a "keystone" species, who control the abundance every other species, but require a habitat of sufficient size to support those other creatures.

它们是生态学家所谓的“重点”物种，控制着大量的其它物种，不过它们需要足够大的栖息地以供养其它那些生物。