| RecYear | | Physical quantity | Year of sample |
| plot | | Physical quantity | denotes the plot number |
| transect | | Physical quantity | denotes the transect number within a plot |
| dist | dist | Physical quantity | denotes the subplot location within a transect.
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| spcode | | Physical quantity | denotes an internal numerical code assigned to each unique species |
| gen | | Nominal | denotes the species’ genus |
| spec | | Nominal | denotes the species’ species |
| trt | | Nominal | denotes the three treatments |
| coverclass | | Physical quantity | denotes the cover class of the species, where 1=0 to 1% cover, 2=1 to 5% cover, 3=5 to 25% cover, 4=25 to 50% cover, 5=50 to 75% cover, 6=75% to 95% cover, and 7=95 to 100% cover. |
