Technical highlights - Department of Primary Industries ...

(S, Mn) Axis II [32%] (pH, P, Mg, K)
4
2
0
–2
–4
Ipswich
Ipswich
Carindale
Boonah
Nerang
Moogerah
Boonah
Moogerah
Nerang
Oxley
Carindale
–6
–6 –4 –2 0 2 4
Axis I [41%] (TN, OC, TC, Ca, Na, EC)
Table 23.2 Two-way ANOVA summary results of leaf chemistry in cat’s claw creeper compared to co-occurring introduced non-invasive
(P. suberosa) and native (P. straminea and S. australis) species across six sites in the Brisbane – Gold Coast region
Summary ANOVA Group meana (± SEb )
Leaf trait Site Invasion Site × invasion Invasive Non-invasive
Macronutrients (%)
Total nitrogen p ≤ 0.001 p ≤ 0.001 NSc 2.88 ± 0.01 2.06 ± 0.09
Total phosphorus p ≤ 0.001 p ≤ 0.001 p ≤ 0.001 0.42 ± 0.03 0.26 ± 0.02
Potassium p ≤ 0.001 p ≤ 0.01 NS 2.45 ± 0.12 1.82 ± 0.11
Calcium NS p ≤ 0.01 p ≤ 0.05 1.65 ± 0.09 2.45 ± 0.24
Magnesium NS p ≤ 0.001 NS 0.26 ± 0.02 0.59 ± 0.07
Sodium p ≤ 0.001 NS p ≤ 0.01 0.04 ± 0.01 0.06 ± 0.01
Sulphur
Micronutrients (mg kg
p ≤ 0.01 NS NS 0.19 ± 0.02 0.23 ± 0.02
–1 )
Aluminium p ≤ 0.05 p ≤ 0.05 NS 82.38 ± 9.62 56.20 ± 9.28
Boron NS p ≤ 0.001 p ≤ 0.05 80.72 ± 4.55 40.41 ± 3.09
Cadmium p ≤ 0.001 p ≤ 0.01 NS 0.04 ± 0.01 0.02 ± 0.01
Cobalt p ≤ 0.001 p ≤ 0.001 p ≤ 0.001 0.26 ± 0.02 0.16 ± 0.02
Copper p ≤ 0.001 p ≤ 0.05 p ≤ 0.01 17.14 ± 1.62 13.47 ± 1.23
Iron p ≤ 0.001 p ≤ 0.001 NS 114.82 ± 11.38 75.86 ± 9.80
Manganese p ≤ 0.001 p ≤ 0.001 p ≤ 0.001 70.79 ± 80.5 186.21 ± 69.78
Molybdenum p ≤ 0.001 p ≤ 0.001 p ≤ 0.001 1.56 ± 0.11 0.28 ± 0.09
Lead NS NS NS 0.54 ± 0.02 0.54 ± 0.03
Zinc NS NS NS 33.74 ± 1.91 37.57 ± 2.65
a Group means have been pooled across two habitats (riparian and non-riparian) and six survey sites.
b SE = standard error.
c NS = not significant.
Oxley
Soil condition
uninfested
infested
Figure 23.1 Ordination of soils underneath (closed symbols) and away from (open symbols) cat’s claw creeper patches across six sites of varying
land use: arrows indicate direction and magnitude of soil traits driving each axis; percentages refer to data variation captured by each axis
Part 2 Landscape protection and restoration 53