I collected a moderate amount of new data as part of my graduate research in Panama, but more recently have benefitted enormously from the generosity of others. All data sets are open access, and are available via DataDryad or Figshare. I am a member of Open Traits.
Panama Secondary Forest Traits: 17 traits measured on 55 woody species and up to 1700 individuals per trait.
Centre-du-Quebec Forest Plots: This is a dataset of 395 plots (100 m2) distributed within and across 42 forest fragments in central Quebec, Canada.
Open Nahele: This is a dataset of 530 forest plots (100 - 10,000 m2) distributed across the six largest islands of the Hawaiian archipelago.