However, it turns out that New Guinea's biota suffered from three severe limitations.

然而，事实证明，几内亚的生物群受到三个严重的限制。

This means that cane toads are numerous enough to suck up all the insects from the biota.

这意味着甘蔗蟾蜍的数量足以吸食生物群中的所有昆虫。

Greg says: Cane toads are so numerous that they suck up all the insects from the biota.

格雷格说：甘蔗蟾蜍数量众多， 以至于它们吸食了生物群中的所有昆虫。

If the structures increase the overall abundance of prey in the environment, then they may provide the sustainable new foraging opportunities for these biotas.

如果整体大环境中猎物大量增加, 那它们就可以为生物种群提供可持续的觅食机会。

That they suck up all the insects from the biota. Cane toads are so numerous that they suck up all the insects from the biota.

他们吸食了生物群中的所有昆虫。甘蔗蟾蜍数量众多，以至于它们吸食了生物群中的所有昆虫。

Thus, the limits on indigenous food production in New Guinea had nothing to do with New Guinea peoples, and everything with the New Guinea biota and environment.

因，几内亚本土粮食生产的限制与几内亚人民无关，而与几内亚生物群和环境无关。

Thus, as in New Guinea, the limitations on indigenous food production in the eastern United States were not due to Native American peoples themselves, but instead depended entirely on the American biota and environment.

因，与几内亚一样，美国东部土著粮食生产的限制并不是由于美洲原住民本身，而是完全取决于美洲的生物群和环境。

Here, for example, you see biota that colors these amazing hot sulphur springs in New Zealand this gorgeous orange color, and it lets you start to think about how different these other planets could be.

比如， 在这里， 你可以看到生物群落将西兰令人惊叹的硫磺温泉染成了华丽的橙色，这让你开始思考其他星球可能有多么不同。

We aren't sure why more animals haven't been able to put these microbes to work for them; perhaps it's because their guts don't have the right chemical composition or because other biota already living there are hostile towards newcomers.

我们不确定为什么更多的动物不能让这些微生物为它们工作；也许是因为他们的内脏没有正确的化学成分， 或者因为已经生活在那里的其他生物群来者充满敌意。