translation.en: A trophic cascade is an ecological process which starts at the top of the food chain and tumbles all the way down to the bottom, and the classic example is what happened in the Yellowstone National Park in the United States when wolves were reintroduced in 1995.
translation.zh: 营养级联是一个生态过程 从食物链的顶层开始 自上而下到达底层 最经典的例子是 美国黄石国家公园 1995 年重新放归狼群