A quick explanation what the individual worksheets stand for: I have data for 3 different ecosystems: PD = Polar Desert HA = High Arctic LA = Low Arctic Each ecosystem has one warming and one control "Each experiment was 'run' for 10 years, from 1995 to 2005" Each experiment for each ecosystem has 5 replicates This dataset includes only the top hit "PD5 = Polar Desert, replicate 5 (or plot 5)" "LA5 = Low Arctic, plot 5" etc. gram = graminoid = rush + grass soil = bare ground GFNARROWB = bottom hit GFBROADB = bottom hit GFNARROW = top hit GFBROAD = top hit