One of the more interesting talks that I've heard over the years on grazing or silvopasturing was by Dr. Gene Garrett at the 2011 Northeast Silvopasture Conference titled: Silvopasture Ecosystem Services. A copy of the presentation is archived at: https://cpb-us-e1.wpmucdn.com/blogs.cornell.edu/dist/d/5957/files/2...
This article on the role that trees play in phosphorous solubilization (https://www.frontiersin.org/articles/10.3389/fpls.2020.567918/full) reminded me of Dr. Garrett's talk, and also of the many symbiotic benefits of adding trees in to agricultural systems.
Ten "ecosystem services" that come to mind. Please add to this list for things I've overlooked: