Not surprisingly, one study found that growth of Sitka spruce, the dominant streamside tree in the area, was three times greater along salmon streams than along nonsalmon streams.

• 另一项研究则发现，该地区的优势溪岸树种美国西川云杉，在有鲑鱼溪流的地方，长得比没有鲑鱼溪流的地方还大三倍。