Hubbard Brook Experimental Forest: Droughtnet fine root production from ingrowth cores

To assess relative production of fine roots in droughted and reference
plots that are part of the Hubbard Brook DroughtNet study, mesh-free
root ingrowth (total depth 20cm) were installed during most study
years. Multiple subplots for destructive soil measurements were
reserved within plots 7 and 8, and just outside reference plots 1 and
2 in 2015. Fine root production is a component of NPP that is often
not well measured in global change experiments. The ingrowth core
methodology used may not perfectly represent belowground NPP in the
surrounding intact soil, but should provide a reliable metric of
relative differences among plots and over time. These data were gathered as part of the Hubbard Brook Ecosystem Study
(HBES). The HBES is a collaborative effort at the Hubbard Brook
Experimental Forest, which is operated and maintained by the USDA
Forest Service, Northern Research Station.