There is a regular conference for them to exchange practices, models and terminology - instructional capital - and meet each other - social capital. It cuts across a fairly wide range of activities, mostly concerned with reclamation of space, for example, replanting the margins of highways with guerilla gardening, permanent street reclaiming, etc. There is a fair bit of Gaia philosophy, green politics and green economics thrown in, but there is no one unifying intellectual thread that all bioneers follow.
See also: Water Keeper, Wild Green, terrist