Transhumance [trans-hyoo-muhns] - noun: the seasonal migration of livestock, and the people who tend them, between lowlands and adjacent mountains. (from dictionary.com)
Mostly, I love my day job. As a livestock and natural resources advisor with the University of California Cooperative Extension, I get to work with ranchers and rangeland managers here in the Central Sierra Nevada region to find answers to our collective questions around rangeland livestock production and natural resources. Sure, there are days that I have to spend in the office, feeding the bureaucracy that is part of any large institution. But mostly I get to work on things that the folks I serve are curious about - in large part, the same things I'm curious about! Questions like, "How does grazing or browsing affect fire behavior?" "Can we use virtual fence to target specific landscape or vegetation management goals?" "Do livestock guardian dogs push predators to neighboring properties, or do they simply disrupt their predatory behaviors?"
Many of the ranchers I work with on the west slope of the Sierra Nevada still practice some form of transhumance. They, along with their livestock, spend the late fall, winter, and spring months in the foothills or the Central Valley. They spend their summers, largely, in the high country - mostly on Forest Service grazing permits. This cycle of seasonal migration has existed long before the Forest Service was created in the early 1900s.
This year, my research activities followed this transhumant pattern. During the winter and spring, much of my focus was on grazing in the foothills. I measured total forage production across all four counties I serve. I experimented with virtual fencing systems on sheep, goats, and livestock guardian dogs. I helped design a new project to measure the nutritional value of our annual rangelands.
But as spring turned to summer, I got to spend more time in the mountains! Lucky me! I measured biomass and shrub moisture at UC's Blodgett Experimental Forest in the mountains above Georgetown, both before sheep and goats arrived and after they left. I collected data on grazing use in mountain meadows and upland range at 8500' above sea level south of Sonora Pass. I learned how to measure meadow biodiversity in the Lakes Basin country of the Tahoe National Forest. And I worked with several producers who summer in the high country to test virtual fence technology on livestock guardian dogs and cattle.
The side benefit was that I got to be in the mountains! At least every two weeks - sometimes more frequently. I often got to take my dogs with me - and we frequently camped out. I dialed in my camping gear - by the end of the summer, I could have my tent set up and dinner ready to eat in 30 minutes! I finally wore out the soles on a pair of Whites boots.
By mid-October, when I wrapped up my summer field season, I was ready to be home for awhile. Transhumant science - at least for me - took quite a bit of driving. After my last day in the mountains, I emptied my field vest (I'm kinda old school - my field vest is an ancient Filson canvas vest) and threw it in the wash, and shipped my Whites to Spokane for new soles. I'm enjoying the prospect of sleeping in my own bed for the next six months or so (rather than on the ground).
But tonight, as I write this in front of my woodstove, I realize that part of the attraction of transhumance, at least for me, was the rhythm. The cycle of changing seasons. The cycle of changing work. This year, I got to see spring come to the foothills - and then to the mountains. Similarly, I got to see the aspens turn golden in the High Sierra, and now I'm seeing the black oaks turn yellow here in the foothills.
Transhumance is an ancient system that allowed herders and ranchers to follow the green forage - upslope in the late spring, downslope in the fall. This year, we are celebrating the International Year of Pastoralists - the people in all cultures who tend livestock on rangelands. Who have followed the green for generations - for millennia, in some parts of the world. In a very small way, I got to experience a bit of this lifeway this summer. And hopefully for the remaining summers in my career!
