Volunteer eucalypt seedlings under holistic management on Allendale, in Southeastern Australia. Photo: David Marsh.
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.
The Silvo-Pastoral World Congress is happening next September in Evora, Portugal.
I am co-convening a session at next year’s World Congress on Silvo-Pastoral Systems. I love interdisciplinary problem-based conferences like this one, which is focussed on “systems which combine trees with animal grazing, in combination with crops, in regions of the world with two seasons, one dry and one wet, and thus drought as a limiting factor”. My Australian work on scattered trees fits in here, but also new work on holistic management. I am co-convening a theme on ‘large scale trends: assessing and mapping at the regional and global scale‘ with Guillermo Martinez-Pastur from Argentina, but there are many other themes, including on socio-economics. We are looking for a diversity of landscapes to be represented. Abstracts are closing November 30th. Please pass this on to anyone you think may be interested.