An Analysis of Occurrences, Impacts on Livestock and Existing Management Strategies of Invasive Ipomoea hildebrandtii Vatke in Southern Rangelands of Kenya
Background: Ipomoea hildebrandtii Vatke, an invasive weed is a key limitation to livestock production in pastoral and agro-pastoral Southeastern rangelands of Kenya. The weed is reported to reduce forage availability, disrupt normal grazing patterns, and livestock poisoning. Overgrazing, recurring droughts, and land-use changes has greatly contributed to its spread. Methods: Weed information data was collected through field questionnaires, direct observations, key informant interviews and focus group discussions. Remote sensing using satellite imagery was utilized to visualize and analyze weed distribution. Results: The weed is prevalent in degraded grazing areas, along seasonal rivers, and mined fields. Weed infestation was statistically significant between the counties (p < 0.001) with Kajiado county recording the highest infestation. Weed uprooting and burning were reported as the management methods in use. Runoff water was identified one of the key mechanisms of spreading. Between 2019 and 2024, Ipomoea hildebrandtii coverage grew by 26%, in the study counties. Conclusions: Ipomoea hildebrantii poses a significant challenge to livestock production in the region, necessitating the development of localized management strategies. Engaging and synthesizing the community on the impacts of this invasive weed, alongside disseminating information on available management options, is essential for sustaining community livelihoods.
Cite this paper
Onduso, J. N. , Koech, O. K. , Kilalo, D. C. and Onyango, C. M. (2026). An Analysis of Occurrences, Impacts on Livestock and Existing Management Strategies of Invasive Ipomoea hildebrandtii Vatke in Southern Rangelands of Kenya. Open Access Library Journal, 13, e14399. doi: http://dx.doi.org/10.4236/oalib.1114399.
Nash, D.J., Middleton, N. and Thomas, D. (1999) World Atlas of Desertification. The Geographical Journal, 165, Article 325. https://doi.org/10.2307/3060449
Liebig, M.A., Gross, J.R., Kronberg, S.L., Hanson, J.D., Frank, A.B. and Phillips, R.L. (2006) Soil Response to Long-Term Grazing in the Northern Great Plains of North America. Agriculture, Ecosystems & Environment, 115, 270-276. https://doi.org/10.1016/j.agee.2005.12.015
Alkemade, R., Reid, R.S., van den Berg, M., de Leeuw, J. and Jeuken, M. (2012) Assessing the Impacts of Livestock Production on Biodiversity in Rangeland Ecosystems. Proceedings of the National Academy of Sciences, 110, 20900-20905. https://doi.org/10.1073/pnas.1011013108
Guerin, G.R., Sparrow, B., Tokmakoff, A., Smyth, A., Leitch, E., Baruch, Z., et al. (2017) Opportunities for Integrated Ecological Analysis across Inland Australia with Standardised Data from Ausplots Rangelands. PLOS ONE, 12, e0170137. https://doi.org/10.1371/journal.pone.0170137
Sobecki, T., Moffitt, D., Stone, J. and Franks, C. (2000) A Broad-Scale Perspective on the Extent, Distribution, and Characteristics of US Grazing Lands and AG Mendenhall. The Potential of US Grazing Lands to Sequester Carbon and Mitigate the Greenhouse Effect. CRC Press, 51-94.
Mwilawa, A.J., Komwihangilo, D.M. and Kusekwa, M.L. (2008) Conservation of Forage Resources for Increasing Livestock Production in Traditional Forage Reserves in Tanza-nia. African Journal of Ecology, 46, 85-89. https://doi.org/10.1111/j.1365-2028.2008.00934.x
Rija, A., Kideghesho, J., Mwamende, K. and Selemani, I. (2013) Emerging Issues and Challenges in Conservation of Biodiversity in the Range-lands of Tanzania. Nature Conservation, 6, 1-29. https://doi.org/10.3897/natureconservation.6.5407
Awgachew, S., Flintan, F. and Bekure, S. (2015) Particpatory Rangeland Management Planning and Its Implementation in Ethiopia. https://hdl.handle.net/10568/67916
Opiyo, F., Ekaya, W., Nyariki, D. and Mureithi, S.M. (2011) Seedbed Preparation In-fluence on Morphomeric Characteristics of Perennial Grasses of a Semi-Arid Rangeland in Kenya. African Journal of Plant Science, 5, 460-486.
Nyariki, D.M. and Amwata, D.A. (2019) The Value of Pastoralism in Kenya: Application of Total Economic Value Approach. Pastoralism, 9, Article No. 9.https://doi.org/10.1186/s13570-019-0144-x
Kassahun, A., Snyman, H.A. and Smit, G.N. (2008) Impact of Rangeland Degradation on the Pastoral Production Systems, Livelihoods and Perceptions of the Somali Pastoralists in Eastern Ethiopia. Journal of Arid Environments, 72, 1265-1281. https://doi.org/10.1016/j.jaridenv.2008.01.002
Cameron, D.R., Marty, J. and Holland, R.F. (2014) Whither the Rangeland?: Protection and Conversion in California’s Rangeland Ecosystems. PLOS ONE, 9, e103468. https://doi.org/10.1371/journal.pone.0103468
Hoffmann, B.D. and James, C.D. (2010) Using Ants to Manage Sus-tainable Grazing: Dynamics of Ant Faunas along Sheep Grazing Gradients Conform to Four Global Patterns. Austral Ecology, 36, 698-708. https://doi.org/10.1111/j.1442-9993.2010.02205.x
FAO (2009) Review of Evidence on Drylands Pastoral Systems and Climate Change: Implications and Opportunities for Mitigation and Adaption. Food and Agriculture Organization of the United Nations.
Akuja, T.E. and Kandagor, J. (2019) A Review of Policies and Agricultural Produc-tivity in the Arid and Semi-Arid Lands (ASALS), Kenya: The Case of Turkana County. Journal of Applied Biosciences, 140, Article 14304. https://doi.org/10.4314/jab.v140i1.9
Soussana, J.F., Allard, V., Pilegaard, K., Ambus, P., Amman, C., Campbell, C., et al. (2007) Full Accounting of the Greenhouse Gas (CO2, N2O, CH4) Budget of Nine European Grassland Sites. Agriculture, Ecosystems & Environment, 121, 121-134. https://doi.org/10.1016/j.agee.2006.12.022
Angerer, J.P., Fox, W.E., Wolfe, J.E., Tolleson, D.R. and Owen, T. (2023) Land Degradation in Rangeland Ecosystems. In: Sivanpillai, R., Ed., Biological and Environmental Hazards, Risks, and Disasters, Elsevier, 395-434. https://doi.org/10.1016/b978-0-12-820509-9.00007-1
Witt, A., Beale, T. and van Wilgen, B.W. (2018) An Assess-ment of the Distribution and Potential Ecological Impacts of Invasive Alien Plant Species in Eastern Africa. Transactions of the Royal Society of South Africa, 73, 217-236. https://doi.org/10.1080/0035919x.2018.1529003
Shackleton, R.T., Shackleton, C.M. and Kull, C.A. (2019) The Role of Invasive Alien Species in Shaping Local Livelihoods and Human Well-Being: A Review. Journal of Environmental Management, 229, 145-157. https://doi.org/10.1016/j.jenvman.2018.05.007
Macharia, P.N. (2004) Community Based Interventions as a Strate-gy to Combat Desertification in the Arid and Semi-Arid Rangelands of Kajiado District, Kenya. Environmental Monitoring and Assessment, 99, 141-147. https://doi.org/10.1007/s10661-004-4014-6
Lusigi, W.J., Nkurunziza, E.R. and Masheti, S. (1984) Forage Preferences of Livestock in the Arid Lands of Northern Kenya. Journal of Range Management, 37, Article 542. https://doi.org/10.2307/3898855
Mganga, K., Musimba, N., Nyariki, D., Nyangito, M., ombe, W., Ekaya, W., et al. (2010) The Challenges Posed by Ipomoea Kituensis and the Grass-Weed Interaction in a Reseeded Semi-Arid En-vironment in Kenya. International Journal of Current Rese, 11, 1-5.
Mworia, J.K. (2011) Invasive Plant Species and Biomass Production in Savannas. In: Atazadeh, I., Ed., Biomass and Remote Sensing of Biomass. IntechOpen.
Kisambo, B.K., Ogillo, B.P. and Musyimi, D. (2023) Effects of Weed Control Methods on Weeds and Productivity of Range Grasses in Semi-Arid Kenya. Tropical and Subtropical Agroecosystems, 26, 1-13. https://doi.org/10.56369/tsaes.4494
Manyeki, J., Kubasu, D., Kirwa, E. and Mnene, W. (2013) Assessment of Socioeconomic Factors Influenc-ing Adoption of Natural Pastures Improvement Technologies in Arid and Semi-Arid Lands of Kenya. Livestock Research for Rural Development, 25.
Manyeki, J., Kirwa, E., Ogillo, B., Mnene, W., Kimitei, R., Mosu, A., et al. (2015) Economic Analysis of Natural Pasture Rehabilitation through Reseeding in the South-ern Rangelands of Kenya. Livestock Research for Rural Development, 27.
Lugusa, K. (2015) Fodder Production as an Adaptation Strategy in the Drylands: A Case Study of Producer Groups in Baringo County, Kenya. https://doi.org/10.13140/RG.2.1.3027.3363
Erick, O., Wasonga, O., Wasonga, Elhadi, M. and Elhadi, Y. (2017) Analysis of Fodder Production and Marketing in the Rangelands of Southern Kenya. https://www.researchgate.net/publication/321419540
Ogutu, J.O., Piepho, H., Said, M.Y. and Kifugo, S.C. (2014) Herbivore Dynamics and Range Contraction in Kajiado County Kenya: Climate and Land Use Changes, Population Pressures, Governance, Policy and Human-Wildlife Conflicts. The Open Ecology Journal, 7, 9-31. https://doi.org/10.2174/1874213001407010009
Mganga, K.Z., Musimba, N.K.R., Nyariki, D.M., Nyangito, M.M. and Mwang’ombe, A.W. (2013) The Choice of Grass Species to Combat Desertification in Semi‐Arid Kenyan Rangelands Is Greatly Influenced by Their Forage Value for Livestock. Grass and Forage Science, 70, 161-167. https://doi.org/10.1111/gfs.12089
Gikaba, J.M., Muthoni, K.S. and Bebe, B.O. (2014) Influence of Drought Duration on Livestock Feeding Practices by Maasai Pastoralists in Kajiado County, Kenya. International Journal of Innovation and Applied Studies, 8, 225-31.
Amwata, D.A., Nyariki, D.M. and Musimba, N.R.K. (2015) Factors Influencing Pastoral and Agropastoral Household Vulnerability to Food Insecurity in the Drylands of Kenya: A Case Study of Kajiado and Ma-kueni Counties. Journal of International Development, 28, 771-787. https://doi.org/10.1002/jid.3123
Moss, C.J. (2001) The Demography of an African Elephant (Loxodonta Africana) Population in Amboseli, Kenya. Journal of Zoology, 255, 145-156. https://doi.org/10.1017/s0952836901001212
Grillo, K. (2014) Pastoralism in Africa: Past, Present and Future. Azania: Archaeological Research in Africa, 49, 265-267. https://doi.org/10.1080/0067270x.2014.903130
Rejmánek, M. and Richardson, D.M. (2013) Trees and Shrubs as Invasive Alien Species—2013 Update of the Global Database. Diversity and Distributions, 19, 1093-1094. https://doi.org/10.1111/ddi.12075
Kedera, C. and Kuria, B. (2005) Invasive Alien Species in Kenya: Status and Management. Proceedings of a Workshop, Braunschweig, Germany, 22-26 September 2003, 26.
Macharia, P.N. and Ekaya, W.N. (2005) The Impact of Rangeland Condition and Trend to the Grazing Resources of a Semi-Arid Envi-ronment in Kenya. Journal of Human Ecology, 17, 143-147. https://doi.org/10.1080/09709274.2005.11905769
Shackleton, R.T., Le Maitre, D.C., Pasiecznik, N.M. and Richard-son, D.M. (2014) Prosopis: A Global Assessment of the Biogeography, Benefits, Impacts and Management of One of the World’s Worst Woody Invasive Plant Taxa. AoB PLANTS, 6, plu027. https://doi.org/10.1093/aobpla/plu027
Chikoye, D., Manyong, V.M. and Ekeleme, F. (2000) Characteristics of Speargrass (Imperata cylindrica) Dominated Fields in West Africa: Crops, Soil Properties, Farmer Perceptions and Management Strategies. Crop Protection, 19, 481-487. https://doi.org/10.1016/s0261-2194(00)00044-2
Thornton, P.K., Kruska, R.L., Henninger, N., Kristjanson, P.M., Reid, R.S., Atieno, F., et al. (2002) Mapping Poverty and Livestock in the Developing World [Internet]. International Live-stock Research Institute.
Pfister, J.A., Panter, K.E., Gardner, D.R., Stegelmeier, B.L., Ralphs, M.H., Molyneux, R.J., et al. (2001) Alkaloids as Anti-Quality Factors in Plants on Western U.S. Rangelands. Journal of Range Management, 54, Article 447. https://doi.org/10.2307/4003116
Foxcroft, L.C., Rouget, M., Richardson, D.M. and Mac Fadyen, S. (2004) Re-constructing 50 Years of Opuntia stricta Invasion in the Kruger National Park, South Africa: Environmental Determinants and Propagule Pressure. Diversity and Distributions, 10, 427-437. https://doi.org/10.1111/j.1366-9516.2004.00117.x
Agbeve, R., Tamatey, P., Owusu Sarkwa, F. and Timpong-Jones, E. (2021) A Review of the Impact of Invasive Species on Rangeland Productivity. 1st Joint GSAP & GASA Conference with the Theme “Sustainable Rearing for Food and Jobs in The Era of COVID-19: The Role of Stakeholders in The Animal Indus-try”, Tamale, 24-27 August 2021, 522-533.
