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Home / research / Integrated forest monitoring / Intensive long term monitoring of forest ecosystems (Level II) / Location of intensive long term monitoring of forest ecosystems plots in Britain and their summary data / Thetford Level II long-term forest monitoring plot / Thetford Level II plot – Measurements
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Average of annual surveys over 1995 to 2004 period
Aspect Average Standard error Sample size
Local crown density reduction (%): 5% classes East 20.68 0.670 66
North 20.15 0.732 66
South 18.56 0.713 66
West 22.95 0.622 66
Absolute crown density reduction (%): 5% classes East 31.36 0.541 66
North 30.53 0.957 66
South 28.10 0.716 66
West 33.63 0.810 66
Insect damage score
(0=none, 1=rare, 2=infrequent, 3=common, 4=abundant)		 East 0.015 0.006 66
North 0.045 0.018 66
South 0.060 0.024 66
West 0.015 0.006 66
Fungal damage score
(0=none, 1=rare, 2=infrequent, 3=common, 4=abundant)		 East 0 0 66
North 0 0 66
South 0 0 66
West 0 0 66
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