Variable retention in Tasmania, Australia: trends over 16 years of monitoring and adaptive management

Ecological Processes

Table 1 Summary statistics for selected attributes of ARN coupes harvested since 2003

Attribute	Mean	sd	Number	Min	Max
Coupe area (ha)	38.6	25.3	89	4.7	139.2
Harvest area (ha)	24.3	13.8	115	3.6	74.4
Perimeter length (m)	4728	2313	115	773	11,662
Perimeter-to-area ratio (m ha⁻¹)	210	71	115	117	543
Influence (%)	68	14	115	34	97
Retention (%)	29	20	89	0	75
Burnt seedbed (%)	64	24	82	0	100
Disturbed seedbed (%)	26	20	82	0	93
Unburnt/undisturbed seedbed (%)	10	15	82	0	1
Age 1 stocking (%)	70	17	80	26	100
Age 1 density (%)	2507	1724	78	348	9500

Number varies due to incomplete survey records or unfinished post-harvest mapping updates for some coupes. Also given are the mean, standard deviation (sd), and minimum (min) and maximum (max) value