生态学家曾一度认为，物种多样性使生态系统变得稳定。
At one time, ecologists believed that species diversity made ecosystems stable.
我们做了很多研究，包括生物多样性与物种稳定性的关系，以及森林资源的竞争等。
We've looked at everything from how biodiversity relates to species stability, to competition for forests resources and more.
他们认为，生物多样性越丰富，生态系统就越稳定。
They believed that the greater the diversity the more stable the ecosystem.
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