TY - JOUR
T1 - Effects of climate change on the future distributions of the top five freshwater invasive plants in South Africa
AU - Hoveka, L. N.
AU - Bezeng, B. S.
AU - Yessoufou, K.
AU - Boatwright, J. S.
AU - Van der Bank, M.
N1 - Publisher Copyright:
© 2015 South African Association of Botanists.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - A recent study shows that most aquatic alien plants in temperate cold climate are of tropical and subtropical origins and only those that can withstand cold climates become invasive. This suggests that a changing climate that becomes warmer may result in currently non-invasive alien plants becoming invasive in the future. To facilitate pre-emptive actions when controlling invasive aquatic plants in South Africa under climate change, we reconstructed predictive models for the five most damaging aquatic alien plants of freshwater systems in the country. We found evidence of contrasting shifts in species distribution ranges: the ranges of Myriophyllum aquaticum and Pistia stratiotes will contract, while Azolla filiculoides, Eichhornia crassipes, and Salvinia molesta will increase their future ranges with most suitable habitats found in the Western Cape province and along coastal areas. In addition, the predicted range contraction and expansion would result in some dams currently vulnerable to invasion becoming resilient while others that are currently resilient may become vulnerable due to climate change. These results can be used to develop future monitoring programs for aquatic ecosystems, prioritize control efforts, and raise public awareness on risks posed by these aquatic invasive plants, especially under future climate scenarios.
AB - A recent study shows that most aquatic alien plants in temperate cold climate are of tropical and subtropical origins and only those that can withstand cold climates become invasive. This suggests that a changing climate that becomes warmer may result in currently non-invasive alien plants becoming invasive in the future. To facilitate pre-emptive actions when controlling invasive aquatic plants in South Africa under climate change, we reconstructed predictive models for the five most damaging aquatic alien plants of freshwater systems in the country. We found evidence of contrasting shifts in species distribution ranges: the ranges of Myriophyllum aquaticum and Pistia stratiotes will contract, while Azolla filiculoides, Eichhornia crassipes, and Salvinia molesta will increase their future ranges with most suitable habitats found in the Western Cape province and along coastal areas. In addition, the predicted range contraction and expansion would result in some dams currently vulnerable to invasion becoming resilient while others that are currently resilient may become vulnerable due to climate change. These results can be used to develop future monitoring programs for aquatic ecosystems, prioritize control efforts, and raise public awareness on risks posed by these aquatic invasive plants, especially under future climate scenarios.
KW - Aquatic invasive plants
KW - Ecological niche modeling
KW - Freshwater ecosystems
KW - Range contraction
KW - Range expansion
UR - http://www.scopus.com/inward/record.url?scp=84940468519&partnerID=8YFLogxK
U2 - 10.1016/j.sajb.2015.07.017
DO - 10.1016/j.sajb.2015.07.017
M3 - Article
AN - SCOPUS:84940468519
SN - 0254-6299
VL - 102
SP - 33
EP - 38
JO - South African Journal of Botany
JF - South African Journal of Botany
ER -