°0’E
°0’E
°0’E
°0’E
°0’E
°0’S
°0’S
°0’S
MEAN
ANNUAL
TEMPERATURE
°C)
<10
11-12
13-14
15-16
17-18
19-20
21-22
>22
0
2 5 0
5 0 0
125
Km
L
°0’E
°0’E
°0’E
°0’E
°0’E
°0’S
°0’S
°0’S
MEAN
ANNUAL
RAINFALL (mm)
<100
101-200
201-400
401-600
601-800
000
200
200
0
2 5 0
5 0 0
125
Km
L
Fig. 13.1 (continued) MEAN ANNUAL TEMPERATURE: South Africa’s mean annual temperatures range from <10
C along the escarpment to over 22
C in the far north-east. The effects of
diurnal, monthly and seasonal patterns of maximum and minimum temperatures are smoothed in
this statistic, as described by Schulze and Maharaj (2007a). MEAN ANNUAL RAINFALL: A clear
east-to-west rainfall gradient is visible across South Africa with <100 mm falling in the north-west
and over 1200 mm in the east (Schulze and Lynch 2007).
13 The Role of Environmental Factors in Promoting and Limiting Invasions
359
°0’E
°0’E
°0’E
°0’E
°0’S
°0’S
°0’S
MEAN
ANNUAL
TEMPERATURE
°C)
<10
11-12
13-14
15-16
17-18
19-20
21-22
>22
0
2 5 0
5 0 0
125
Km
L
°0’E
°0’E
°0’E
°0’E
°0’E
°0’S
°0’S
°0’S
MEAN
ANNUAL
RAINFALL (mm)
<100
101-200
201-400
401-600
601-800
000
200
200
0
2 5 0
5 0 0
125
Km
L
Fig. 13.1 (continued) MEAN ANNUAL TEMPERATURE: South Africa’s mean annual temperatures range from <10
C along the escarpment to over 22
C in the far north-east. The effects of
diurnal, monthly and seasonal patterns of maximum and minimum temperatures are smoothed in
this statistic, as described by Schulze and Maharaj (2007a). MEAN ANNUAL RAINFALL: A clear
east-to-west rainfall gradient is visible across South Africa with <100 mm falling in the north-west
and over 1200 mm in the east (Schulze and Lynch 2007).
13 The Role of Environmental Factors in Promoting and Limiting Invasions
359