Table 16.2
(continued)
Species
Growth form
QDGCs occupied
(%) in 2000
QDGCs occupied
(%) by 2016
Increase (%) in QDGCs
occupied 2000–2016
Affected
biomes
b
Affected habitat
(riparian, dryland)
Biological
control
c
Opuntia monocantha
Succulent
shrub
2.4
3.9
58.3
AT, IOCB, Sv Both
Complete
Opuntia robusta
Succulent
shrub
11.4
18.0
57.3
G, NK, Sv
Dryland
None
Opuntia stricta
Succulent
shrub
5.4
8.4
55.7
AT, G, Sv
Dryland
Substantial
Parthenium
hysterophorus
Annual herb
0.8
4.5
493.3
IOCB, Sv
Dryland
Not determined
Pennisetum setaceum
Perennial
grass
3.4
8.9
163.6
G, NK, SK, Sv Both
None
Pinus halepensis
Tall tree
4.3
6.1
40.0
G, NK
Dryland
None
Pinus patula
Tall tree
4.3
4.9
14.1
G
Dryland
None
Populus alba
Tall tree
0.8
1.2
60.0
G
Riparian
None
Populus canescens
Tall tree
18.9
24.6
6.5
AT, G, SK
Riparian
None
Populus nigra
Tall tree
4.6
5.8
26.7
G
Riparian
None
Prosopis glandulosa /
velutina
Medium tree 19.8
24.5
23.3
NK, SK
Both
Negligible
Prunus persica
Medium tree 16.2
19.8
22.3
Sv
Dryland
None
Psidium guajava
Medium tree
8.1
9.7
19.4
IOCB, Sv
Both
None
Pyracantha
angustifolia
Shrub
7.2
9.9
37.3
G
Dryland
None
Ricinus communis
Annual shrub 23.2
26.0
12.1
AT, G, IOCB,
Sv, NK
Riparian
None
Robinia pseudoacacia
Tall tree
5.6
8.5
37.3
G
Both
None
Rubus cuneifolius
Shrub
3.8
5.5
44.0
G, IOCB
Both
None
Rubus fruticosus
Shrub
4.5
4.7
3.4
G
Both
None
Salix babylonica
Medium tree 24.2
27.1
12.0
G
Riparian
None
Schinus molle
Medium tree 11.7
14.1
20.3
G, NK, SK
Both
None
Schinus
terebinthifolius
Small tree
1.5
2.0
33.3
IOCB
Both
None
Senna didimobotrya
Shrub
7.1
8.6
21.6
G, IOCB, Sv Both
None
Senna occidentalis
Shrub
2.8
4.4
53.6
G, IOCB, Sv Both
None
470
T. G. O’Connor and B. W. van Wilgen