You do know why they are concerned with lake trout in Yellowstone lake and its effect?

For those that aren't here is the problem with Lake trout (non-native in Yellowstone lake).
1) they eat the native Cutthroat Trout
2) Lake Trout spawn in the lake, Cutthroat Trout spawn in rivers/creeks.
3) Less Cutthroat Trout in the rivers/creeks in the spring eliminates a traditional food source for Grizzly Bears.
4) Grizzly Bears now need to find alternative food in spring, They found it, Elk calves.
5) Less Cuttthroat Trout equals less Elk.

So for those concerned with the elk population they should be behind the elimination of a Non-native Fish species that changed the the Park for the worse.

30 years of observations from Arctic Red River showed the majority of moose calf mortality was due to Black bears. Wolf packs took way less. That makes sense as wolves have there own pups to worry about at that time of year and packs tend to disperse so they probably would concentrate on easier to catch more available small game like beaver and rabbit during fawning season. a beaver has a ton of fat compaired to a moose calf.