Stakeholder perceptions and practices regarding Prosopis (mesquite) invasions and management in South Africa
- 520 Downloads
Invasive alien trees impact the environment and human livelihoods. The human dimensions of such invasions are less well understood than the ecological aspects, and this is hindering the development of effective management strategies. Semi-structured interviews were undertaken to investigate the knowledge and perceptions of Prosopis between different stakeholder groups. Chi-squared tests, Welch ANOVAs, and Principle Component Analyses were run. Factors such as land tenure and proximity to invasions were especially important for explaining differences in perceptions and practices relating to Prosopis among different stakeholder groups. Most respondents were aware of Prosopis and considered it to be invasive (i.e., spreading). Costs associated with Prosopis were perceived to exceed benefits, and most stakeholders wanted to see a reduction in the abundance of Prosopis stands. The mean total cost for the management of Prosopis was US$ 1914 year−1 per farm, where costs ranged from under US$ 10 to over UD$ 500 per ha based on invasion densities and objectives for control. The findings highlight the need for more effective management interventions.
KeywordsBiological invasions Human perceptions Indigenous knowledge Management Stakeholder perceptions Tree invasions
Funding for this work was provided by the DST-NRF Centre of Excellence for Invasion Biology and the Working for Water program through their collaborative research project on “Integrated management of invasive alien species in South Africa.” DMR acknowledges additional support from the National Research Foundation (grant 85417).
- Australian Weeds Committee. 2012. Mesquite (Prosopis spp.) Strategic plan 2012-17. Weeds of National Significance, Australian Governmental Department of Agriculture, Fisheries and Forestry.Google Scholar
- Choge, S.K. and B.N. Chikamai. 2004. Experiences of Prosopis utilization and management from outside Kenya. In Proceedings of the Workshop on Integrated Management of Prosopis Species in Kenya. Nairobi: KEFRI.Google Scholar
- Chikuni, M.F., C.O. Dudley, and E.Y. Sambo. 2004. Prosopis glandulosa Torry (Leguminosae-Mimosoidae) at Swang’oma, Lake Chilwa plain: A blessing in disguise. Malawi Journal of Science and Technology 7: 10–16.Google Scholar
- Gamtoos Water. 2013. Expression of Interest: Calling all farmers/land users interested in government-assistance with alien invasive clearing in St. Francis Bay and surrounding areas. Retrieved, from http://www.gamtooswater.co.za/eoi/eoi_4_2013.pdf. Accessed 22 October 2014.
- García-Llorente, M., B. Martín-Lopes, P.A.L.D. Nunes, J.A. González, P. Alcorlo, and C. Montes. 2011. Analyzing the social factors that influence willingness to pay for invasive species management under two different strategies: Eradication and prevention. Environmental Management. doi: 10.1007/s00267-011-9646-z.Google Scholar
- Kazmi, S.J.H., S. Shaikh, U.B. Zamir, H. Zafar, A. Rasool, F. Tariq, A. Afzal, and T. Arif. 2009. Ecological and socio-economic evaluation of the use of Prosopis juliflora for bio-char production in Pakistan. Pakistan: Drynet.Google Scholar
- Low, T. 2012b. In denial about dangerous aid. Biological Invasions 14: 22235–22236.Google Scholar
- McNeely, J.A. (ed.). 2001. Human dimensions of invasive alien species. IUCN: Gland and Cambridge.Google Scholar
- McNeely, J.A. 2011. Xenophobia or conservation: some human dimensions. In Invasive and introduced plants and animals—Human perceptions, attitudes and approaches to management ed. I.D. Rotherham and R.A. Lambert. London: Earthscan.Google Scholar
- Moran, V.C., J.H. Hoffmann, D. Donnelly, B.W. van Wilgen and H.G. Zimmermann. 2000. Biological control of alien, invasive pine trees (Pinus species) in South Africa. In International symposium on biological control of weeds. Montana: Montana State University.Google Scholar
- Mwangi, M and B. Swallow. 2005. Invasion of Prosopis juliflora and local livelihoods: Case study from the Lake Baringo area of Kenya. ICRAF Working Paper—no. 3. Nairobi: World Agroforestry Centre.Google Scholar
- Pasiecznik, N.M., P. Felker, P.J.C. Harris, L.N. Harsh, G. Cruz, J.C. Tewari, K. Cadoret, and L.J. Maldonado. 2001. The Prosopis juliflora–Prosopis pallida complex: A Monograph. Coventry: HDRA.Google Scholar
- Pasiecznik, N.M., S.K. Choge, G.M. Muthike, S. Chesang, C. Fehr, P. Bakewell-Stone, J. Wright, et al. 2006. Putting knowledge on Prosopis into use in Kenya—Pioneering advances in 2006. Nairobi and Coventry: KEFRI and HDRA.Google Scholar
- Pyšek, P., and D.M. Richardson. 2010. Invasive species, environmental change and management, and health. Annual Review of Environment and Resources 35: 25–55.Google Scholar
- Richardson, D.M. 1998. Commercial forestry and agroforestry as sources of invasive alien trees and shrubs. In Invasive species and biodiversity management, ed. O.T. Sandlund, P.J. Schei, and A. Viken, 237–257. Dordrecht: Kluwer Academic Publishers.Google Scholar
- Shackleton, R.T., D.C. Le Maitre, and D.M. Richardson. 2015. Prosopis invasions in South Africa: Populations structures and impacts on native tree population stability. Journal of Arid Environments 114: 70–78.Google Scholar
- Van den Berg, E.C. 2010. Detection, quantification and monitoring Prosopis spp. in the Northern Cape Province of South Africa using remote sensing and GIS. MSc Science. Potchefstroom: North-West University.Google Scholar
- van Klinken, R. 2012. Prosopis spp.—Mesquite. In Biological control of weeds in Australia, ed. M. Julien, R. McFadyen, and J. Cullen. Melbourne: CSIRO.Google Scholar