http://ecosystemslab.disl.org/Papers/paper5.html

author notes:

1. The columns in the data set are:
     1st column: reference (authors and date; see references in word
                      file for complete mention)
     2nd column: community type
     3rd column: net primary production (NPP, g C m-2 yr-1)
     4th column: consumption by herbivores (H, g C m-2 yr-1)
     5th column: percentage of net primary production consumed by
                      herbivores (% NPP consumed)
     6th column: producer internal nitrogen concentration (Nbiomass
                      ,%DW)
     7th column: producer internal phosphorus concentration
                      (Pbiomass ,%DW)
2. Cells with a dot and no numbers correspond to variables not
    provided in the report.