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。