"Bio-mimicry" is what Joel Salatin calls it for that very reason. Large grazing animals don't loaf around the same acreage all summer. They are constantly moving and reacting to predators. The disruption this makes to the grass is different than other methods of grazing.
It would be interesting to run a buffalo through a few acres of the restored prairie, and see what happens before and after.
Have you restored prairie if the megafauna aren't present?
You'd need to reintroduce native megafauna for the comparison to be meaningful. Also, there are more factors to be considered than the number of bird species, such as the impact on various species of flora, mammals, as well as water quality and greenhouse gas emissions.
I agree that the restored prairie term here is a misnomer. But isn't that impractical- I mean at least in Iowa. You would need very large herds of bison with wolves or some other predator forcing them into large mobs to recreate that type of impact. Here the cow functions as the bison and the electric fence as the wolf. The counterintuitive outcome to the study- where a cow pasture out performs a preserve in terms of suitable bird habitat is not surprising when looked at in this context. Nac- I would venture to guess that the measures you bring up would be better in the pasture as well.
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