Simonsberg, Western Cape
Winter rainfall
MAP
Æ812 mm
Mixed pine invasions (Pinus
pinaster
and Pinus
radiata)
Pine ET
¼ 1417 mm (riparian) and 1190 mm
(non-riparian)
Resultant Pine streamflow
reductions of
Æ85–
433 mm/year
Dzikiti et al.
(2013b)
Wellington, Western Cape
Winter rainfall
MAP
Æ500 mm
Riparian eucalypts invasions (E. camaldulensis)
compared to cleared
riparian zone (grassland)
Eucalypt ET
¼ 1058 mm
(riparian)
ET of cleared
site
¼ 865 mm
Eucalypt Streamflow
reductions
of
Æ200 mm/year
Dzikiti et al. (2016)
Franschhoek, Western Cape
Winter rainfall
MAP
Æ600 mm
Riparian poplar invasions
(Populus canescens)
Poplar T
c
¼ 338 mm (all
trees) and 620 mm
(large trees)
Poplar streamflow
reductions
of
Æ20 mm/year
Ntshidi et al. (2018)
Nieuwoudtville, Northern
Cape
Summer rainfall, arid
MAP
Æ150 mm
Riparian Prosopis
invasions
compared to grassland
and native Vachellia
karroo
trees
Prosopis
T
¼ 543 mm.
Vachellia
T
¼ 91 mm
Prosopis streamflow/
groundwater reductions
of
Æ15 mm/year (grassland); and 389 mm/year
(riparian)
Dzikiti et al. (2013a,
2017)
(continued)
15 Impacts of Plant Invasions on Terrestrial Water Flows in South Africa
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