See if you can identify the jellyfish you observed on the beach and how they fit into the local ecosystem．

你看看能不能识别出你在沙滩上观察到的水母，以及它们是怎样融入当地的生态系统的。

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Invasive and non-native plants can make their way into the local ecosystem this way.

这样，那些入侵性的或是那些外来的植物就会以各种办法进入当地的生态系统。

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The control of local ecosystem must guarantee the whole optimum of the global ecosystem.

对局域生态系统的控制也须保证全球生态系统的整体优化。

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An environmental study is required to establish what the impact of drilling will be on the local ecosystem.

FORBES: EPA is Obama's Offshore Drilling Ace in the Hole

In the lionfish's native waters, the western Pacific Ocean, the local ecosystem has adjusted to such predatory behaviour.

ECONOMIST: A heartening tale of business and the environment

The researchers claim the study, published in the journal Science, offers rare experimental proof of a breakdown in a local ecosystem.

BBC: New Zealand scientists record 'biodiversity breakdown'