The first stop of my three week trip was at the University of Greifswald in northeastern Germany. The University was founded in 1456, and the town has a beautiful market square. My hosts were Jurgen Kreyling and Andrey Malyshev.
Just outside of Greifswald is an experiment that reduces snow levels using a roofing system to simulate a future climate scenario. In contrast, Pam Templer’s group reduces snow cover with shovels. Which method is better? It turns out that each method is best for its own location: roofs are better when the snow is shallow (Greifswald), and shovels are best when the snow is deep (New Hampshire).
Another trip was made to the Friedrich-Schiller University in Jena, where I stayed at the Black Bear Hotel that Martin Luther had also visited 500 years earlier.
There is a famous biodiversity experiment on the outskirts of Jena, which shows that increasing the number of plant species in a plot increases the ecosystem services and productivity of the plot.
Most researchers visit the experiment in the growing season, but we jumped for joy at the chance to go on a winter field trip. I learned that the site has to be frequently weeded each year to prevent succession to woody vegetation, and to prevent invasion by other herbaceous species that were not planted. So, the long-term results are partially an artifact of the plots being very aggressively managed. Without this management, the results would be totally different.