And by studying these types of population changes, population ecologists can learn things that go beyond a single species.

通过研究这些类型的种群变化，种群生态学家可以了解到超越单一物种的东西。

They're not necessarily the same type of population as we see here in the U.S., for instance.

例如，他们不一定与我们在美国看到的人口类型相同。