This study uses a combination of remote sensing data, field interviews and observations, and landscape indices to examine the dynamics of land use and land cover (LULC), identify their driving forces, and analyze their effects on the landscape of Abaya-Chamo Basin (ACB) between 1985, 1995, and 2010. The results reveal that the landscape of ACB has changed considerably during the past 25 years between 1985 and 2010. The main changes observed imply a rapid reduction in shrubland (28.82%) and natural grassland (33.13%), and an increase in arable land (59.15%). The basin has become more fragmented and formed less connected patches in 2010 compared to 1985. Rapid population growth, internal migration, policy shifts, and regime change were identified as the key driving forces of LULC changes in ACB. The LULC changes and related trend of increasing landscape fragmentation in the basin increased soil erosion, the volume of surface runoff, and sediment transport in the landscape and, consequently, affected the levels and water quality of the lakes found in the rift floor. Furthermore, the destruction and fragmentation of shrubland and natural grassland led to the decline of wild plants and animals previously prominent in the basin. Therefore, protective measures that take into consideration the economic, social, and ecological dynamics of the basin are urgently needed to save the aquatic and terrestrial ecosystems of the basin from further damage.

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This study evaluated the effect of Land Use and Land Cover (LULC) dynamics on the value of ecosystem services in Abaya-Chamo basin over 1985-2050. The main objectives of the study were to estimate the value of ecosystem services of Abaya-Chamo basin using local and global ecosystem service value coefficients, assess how it changes over time, and develop tools to inform policy and public decision-making to protect lands and waters in the region. The study utilized observed (1985 and 2010) and predicted (2030 and 2050) LULC datasets and ecosystem service value coefficients obtained from publications in peer-reviewed scientific journals. The results indicated that the total ecosystem service value of Abaya-Chamo basin was 12.13 billion USD in 1985 and 12.45 billion USD in 2010. The value is predicted to increase to 12.47 billion USD by the year 2050, which is 2.84% (344.5 million USD) higher than the total value of ecosystem services of the basin in 1985. Although the total ecosystem service value of the basin showed a slight increase over the study period, it was observed that the total value of services obtained from natural ecosystems is expected to decline by 36.24% between 1985 and 2050. The losses of services obtained from natural ecosystems, such as water regulation and erosion control, are major concern as the consequence has already been reported in the basin in the form of reduced water quality and productivity of the lakes due to an increased soil erosion and sediment transport in the basin. Therefore, special attention should be given to the rehabilitation of degraded ecosystems and the protection of remaining natural vegetation and water bodies to enhance natural capital and ecosystem services in the basin. A large-scale dissemination of eco-agricultural land use practices, which provide multiple ecosystem services (such as agroforestry and heterogeneous agricultural areas) in the basin, needs to be considered in the future.

A public mobilization approach known as nikinake drives implementation and technology upscaling in Ethiopia's agricultural extension. This study investigates and describes the processes and effectiveness of nikinake as an extension method used for natural resource management (NRM). The paper draws on empirical field research conducted in Oromia and the southern region of Ethiopia by looking at nikinake in the context of a watershed management campaign in 2015 and 2016. Nikinake is used as an approach to mobilize the public and to promote the skills of farmers and development actors. In principle, the implementation of NRM is voluntary; however, it is largely planned top‐down and enforced through state actors and informal institutions. This study suggests effective integration of social mobilization with reliable extension and a paradigm shift in emphasis from spatial coverage to an effective outcome. Additionally, sustainability and scalability of NRM interventions could be ameliorated by improving experts’ technical skills, raising farmers’ awareness, improving an incentive system, building trust, and better integrating past watershed management and future planning activities. We reflect on the significance of the nikinake experience in Ethiopia for a broader theory of extension‐as‐mobilization for rural development. From the Ethiopian case, a more general recommendation emerges for extension‐as‐mobilization schemes. For long‐term development, it is worthwhile to consider the fit between yearly campaigns as ad hoc project organizations and the existing pattern of actors and institutions responsible for rural development.

Purpose -Ethiopia operates a large agricultural extension service system. However, access to extensionrelated knowledge, technologies and agricultural inputs is unequally distributed among smallholder farmers. Social learning is widely practiced by most farmers to cope with this unequal distribution though its practices have hardly been documented in passing on knowledge of agriculture and rural development or embedding it into the local system of knowledge production, transfer and use. The purpose of this study is, therefore, to identify the different methods of social learning, as well as their contribution to the adoption and diffusion of technologies within Ethiopia's smallholder agricultural setting.Design/methodology/approach -A mixed methods approach was used, comprising farmer and expert interviews, focus group discussions, informal individual discussions and key informant interviews. The data were documented, coded and later analyzed using SPSS and ATLAS.ti.Findings -The findings showed that 55 per cent of the farmers in the studied areas fully relied on social, community-level learning to adopt agricultural technologies, while 35 per cent of them relied on social learning only partly. Farmers acquired knowledge through social networks by means of communication, observation, collective labor groups, public meetings, socio-cultural events and group socialization. Informal institutions such as iddir, debo and dado, helped farmers learn, adopt and diffuse technologies. Originality/value -This study used the concept of epistemic oppression by Dotson (2014) as a conceptual framework to examine farmers' access to extension services and to analyze how informal institutions serve as workplace learning for the smallholder farmers. The authors suggest community-level social learning serves This study is part of the interdisciplinary research project "Improving Food Security in Africa through increased System Productivity of Biomass-based Value Webs" (BiomassWeb, see www. biomassweb.org) at the Center for Development Research (ZEF), University of Bonn, under the Work Package 7.1: Follow the Innovation -Collective Learning, Change Adaptation and Transition Management in Ethiopia. BiomassWeb is financed by the German Federal Ministry of Education and Research (BMBF) and the German Federal Ministry for Economic Cooperation and Development (BMZ), for which the authors are grateful. The first author extends his gratitude to the Leibniz Center for Tropical Marine Research (ZMT) for hosting during the write-up phase. The authors are also grateful to the two anonymous reviewers' comments that helped them to enrich the paper.