Lovely to get an email this week from David Marsh, one of the collaborators in my post-doctoral research on scattered trees under grazing in Australia, from a 40 degree day in NSW, to share news of spontaneous seedling recruitment under his rotational livestock grazing regime:
I thought you may be interested in this pic of regenerating volunteer eucalypts, e. Blakelyii and e. Melliodora. This never happened with constant grazing. We have about three hundred volunteers like this dotted around the place and have managed to protect them from cattle with temporary electric tape when we are grazing those paddocks. Note the paddock in the background full of thistles compared to foreground with not many. Dominance in the community can be influenced by grazing and appropriate recovery. However, we also have some big thistle paddocks this year and my observation is that where they are worst is in our old cropping paddocks. Lots of introduced inorganic fertilisers, chemicals and disturbance. It takes land a long time to get over that.