Induced plant defenses and ecosystem processes.
My last dissertation chapter involved a three year sandbox mesocosm experiment in which different Solidago genotypes were grown in two nutrient environments with some exposed to grasshopper herbivory. It's your classic story of grass-hopper sees leaf, grass-hopper eats leaf, grass-hopper changes the carbon/nitrogen concentration of the leaf and other plant traits with implications for subsequent nutrient cycling and leaf decomposition time.
I am currently winding this project down and will have results soon, but in the meantime you can read about the theoretical questions we're hoping to address in our chapter in Bottom-up and top-down interactions across aquatic and terrestrial systems.
Each enclosed planter box contains solidago plants subject to varying nutrient and herbivory treatment. The experiment has been running since 2012 at the Yale Myers Forest in north east Connecticut.