Search Results (5)

Globally, grassland biomes form one of the largest terrestrial covers and present critical social–ecological benefits. In Kenya, Arid and Semi-arid Lands (ASAL) occupy 80% of the landscape and are critical for the livelihoods of millions of pastoralists. However, they have been invaded by Invasive Plant Species (IPS) thereby compromising their ecosystem functionality. Opuntia stricta, a well-known IPS, has invaded the ASAL in Kenya and poses a threat to pastoralism, leading to livestock mortality and land degradation. Thus, identification and detailed estimation of its cover is essential for drawing an effective management strategy. The study aimed at utilizing the Sentinel-2 multispectral sensor to detect Opuntia stricta in a heterogeneous ASAL in Laikipia County, using ensemble machine learning classifiers. To illustrate the potential of Sentinel-2, the detection of Opuntia stricta was based on only the spectral bands as well as in combination with vegetation and topographic indices using Extreme Gradient Boost (XGBoost) and Random Forest (RF) classifiers to detect the abundance. Study results showed that the overall accuracies of Sentinel 2 spectral bands were 80% and 84.4%, while that of combined spectral bands, vegetation, and topographic indices was 89.2% and 92.4% for XGBoost and RF classifiers, respectively. The inclusion of topographic indices that enhance characterization of biological processes, and vegetation indices that minimize the influence of soil and the effects of atmosphere, contributed by improving the accuracy of the classification. Qualitatively, Opuntia stricta spatially was found along river banks, flood plains, and near settlements but limited in forested areas. Our results demonstrated the potential of Sentinel-2 multispectral sensors to effectively detect and map Opuntia stricta in a complex heterogeneous ASAL, which can support conservation and rangeland management policies that aim to map and list threatened areas, and conserve the biodiversity and productivity of rangeland ecosystems. Full article

Beef production in Kenya is the forte of pastoralists and large-scale ranches in the Arid and Semi-Arid areas. Cross sectional data was collected from 67 pastoralists and seven large-scale ranches, selected through multistage stratified sampling. Comparative descriptive statistics, gross margin analysis and analysis of production constraints were done with the objective of assessing the pastoralists and large-scale ranches direct economic gains, constraints to production and potential for upgrading. Gross margin analysis showed that beef production is profitable for both pastoralists and large-scale ranches. However, large-scale ranches had much higher gross margins of up to six times more. There were significant differences in the live weight of cattle, prices and livestock selling channels and cost of production. Drought, livestock diseases, invasive plant species, lack of water and human-wildlife conflict were among factors limiting productivity of pastoralists. The difference in gross margins indicates existing potential for pastoralists to improve their earnings through a combination of product, process, and functional upgrading. Addressing key constraints to production can contribute to better gains and strengthen coexistence between pastoralists and large-scale ranches. Strategies and programmes to enhance cattle fattening, provision of livestock extension services, affordable feed inputs and collaboration between the two production systems should be considered in upgrading. Full article

Agriculture is the backbone of Kenya’s economy, supporting up to 80% of rural livelihoods. Kenya’s export horticulture is currently the leading agriculture subsector in Kenya and is regarded as an agro-industrial food system based on the economies of scale, producing for mass markets outside of the production area. Much of the food consumed from Kenya’s export horticulture sector has undergone multiple transformations and been subject to a host of formal and informal institutions (rules, regulations, standards, norms and values). Kenya’s export horticulture production, driven by rising global demands, has expanded beyond the ‘traditional’ mountainous high yielding areas into arid and semi-arid (ASALs) zones such as Laikipia County, Northwest of Mount Kenya. An anthropological study of export horticulture viewed as an agro-industrial food system in Laikipia County was carried out utilizing the new institutionalism theory in anthropology to explore the actors, rules and regulations linked to export horticulture production and access to common pool resources. The study employed qualitative data collection methods to collect data over an extended field work period of eight months. The data from 40 in-depth interviews complemented by unstructured observations, four focus group discussions and five key informant interviews was transcribed, coded and analyzed thematically based on the grounded theory approach. This paper, therefore, presents findings from the qualitative case study on the actors as well as the rules and regulations (the institutional settings) of export horticulture production and access to common pool resources from an emic perspective of the involved actors. The formal and informal rules and regulations which form the institutional setting in this food system are viewed as changing and defining the operations of the food system’s access and management of common pool resources, namely water and land. With the agro-industrial food system competing with local food systems such as agro-pastoralism and small holder agriculture for these scarce resources in a semi-arid zone, there is potential for conflict and reduced production, as well as overall benefits to the different actors in the study area. Full article

This paper addresses pastoral resilience by drawing out the coping strategies and mechanisms utilized by the Maasai Pastoralists through a food system approach, based on the study findings of an anthropological study of pastoralism as a food system in Laikipia County, Rift Valley, Kenya. The co-existence and interactions of pastoralism as a food system with other types of food systems in Laikipia, such as large-scale horticulture, justified the selection of the study site. This paper is guided by the specific objectives aimed at establishing actors and their roles, and describing the institutional settings and changes that sustain the continued practice of pastoralism. Using a new institutionalism approach, the paper focuses not only on the actors and their roles but also on how internal and external forces regulate access and use of common pool resources (CPRs) resulting in food sustainability within the food system amidst climatic challenges and cyclic humanitarian crises. We argue that this has an impact on the food system that continually defines and redefines the actors’ roles and institutional settings and changes (formal and informal rules, regulations, values and norms) that in turn affirm the value of pastoral economies and benefits accrued to a wide range of actors beyond the community and leading to pastoral resilience. Data collected through in-depth interviews amongst pastoral households identified actors and their roles in pastoralism in the household with a total of 50 households being conveniently sampled. Key informant interviews with key stakeholders in the food system described the institutional settings and changes and also identified actors and their roles in pastoralism. Three focus group discussions based on age and gender, established the actors and their roles and described institutional settings and changes to supplement data collected from interviews and unstructured observations aimed at giving a better description of the actors and their roles and also point to observable institutional settings and changes within and outside the community group ranches. The findings reveal that actors in the household, state, non-state, and service providers have developed varied coping strategies and mechanisms that sustain pastoralism. The study also identified institutional settings and changes that promote pastoral resilience, notably, private land ownership patterns, co-management of livestock markets, commercialization of herding, decentralization of livestock services, holistic management of pasture and the water-shed management plans. As a result, increased scholarship and advocacy in regards to the concept of co-management of livestock markets, are recommended as a means of understanding the pastoral resilience that the food system exhibits. Full article

Smallholders in the global South are confronted with new opportunities and risks emanating from globalized markets of agricultural goods. In Kenya, large-scale export-oriented horticulture farms, cultivating fruits, flowers and vegetables, were by and large established in the 1980s. In Laikipia County, the farms have grown to be the most important employers tying the region into global markets. The growth of the industry has direct as well as indirect impacts on local livelihoods. Based on qualitative data gathered from 55 interviews held with experts, local households and employees, the assessment shows a range of economic, social and environmental opportunities as well as constraints. Three major shortcomings are identified, the first being increasing river water abstractions and related water scarcity, second the call for living wages and social security, and third constraints smallholders face as out-growers. Addressing these issues can contribute to a more sustainable development in the region. Full article