It's an indirect effect.
"At issue were regulations requiring the Forest Service to leave behind dead trees along streams and intermittent channels to prevent erosion that chokes salmon spawning beds and to provide large woody debris that creates resting places for fish in the water."
Yeah, I like the large woody debris in a bass lake, too.
Makes great habitat.
But PETA won't let us fish anymore, poor fishies feel pain.
I wonder how many fish, salmon included, woul dnot be around anymore if not for fishermen.
Sorry... off subject.