Researchers around the world use this type of tool to estimate population numbers and overall abundance of species.

全世界的研究者都用这种工具来估计种群数量和物种整体丰度。

The longer you can put water, and the more water you can put in, that's great for creating a more diverse habitat and a greater abundance of species.

你放水的时间越长，可以流入的水就越多，这对于创造一个更多样化的栖息地和更丰富的物种是很好的。