selected publications
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article
- Crowdsourced Water Level Monitoring in Kenya's Sondu-Miriu Basin-Who Is "The Crowd"?. Frontiers in Earth Science. 8. 2021
- Feeding efficiency gains can increase the greenhouse gas mitigation potential of the Tanzanian dairy sector. Scientific Reports. 11. 2021
- Particulate macronutrient exports from tropical African montane catchments point to the impoverishment of agricultural soils. SOIL. 7:53-70. 2021
- SUSTAINABLE DEVELOPMENT OF CROP-LIVESTOCK FARMS IN AFRICA. FRONTIERS OF AGRICULTURAL SCIENCE AND ENGINEERING. 8:175-181. 2021
- Variability in tree water uptake determined with stable water isotopes in an African tropical montane forest. Ecohydrology. 14. 2021
- Particulate macronutrient exports from tropical Africanmontane catchments point to the impoverishment ofagricultural soils 2020
- Tropical montane forest conversion is a critical driver for sediment supply in East African catchments. Water Resources Research. 56. 2020
- Agricultural land is the main source of stream sediments after conversion of an African montane forest.. Scientific Reports. 10:14827-14827. 2020
- Land-use change and Biogeochemical controls of soil CO2, N2O and CH4 fluxes in Cameroonian forest landscapes. Journal of Integrative Environmental Sciences. 17:45-67. 2020
- Diurnal Patterns in Solute Concentrations Measured with In Situ UV-Vis Sensors: Natural Fluctuations or Artefacts?. Sensors. 20:859. 2020
- Intensification of dairy production can increase the GHG mitigation potential of the land use sector in East Africa.. Global Change Biology. 26:568-585. 2020
- Rainfall‐Runoff Modeling Using Crowdsourced Water Level Data. Water Resources Research. 55:10856-10871. 2019
- The value of manure - Manure as co-product in life cycle assessment.. Journal of Environmental Management. 241:293-304. 2019
- Temporal and spatial variability in the nutritive value of pasture vegetation and supplement feedstuffs for domestic ruminants in Western Kenya.. Asian-australasian Journal of Animal Sciences. 32:637-647. 2019
- Agroforestry as a climate change mitigation practice in smallholder farming:evidence from Kenya. Climatic Change. 153:379-394. 2019
- Soil carbon dioxide and methane fluxes from forests and other land use types in an African tropical montane region. Biogeochemistry. 143:171-190. 2019
- Sustainable intensification of dairy production can reduce forest disturbance in Kenyan montane forests. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 265:307-319. 2018
- Assessment of hydrological pathways in East African montane catchments under different land use. Hydrology and Earth System Sciences. 22:4981-5000. 2018
- Citizen science pioneers in Kenya - A crowdsourced approach for hydrological monitoring.. Science of The Total Environment. 631-632:1590-1599. 2018
- Management intensity controls soil N2O fluxes in an Afromontane ecosystem. Science of The Total Environment. 624:769-780. 2018
- Climate-smart land use requires local solutions, transdisciplinary research, policy coherence and transparency. Carbon Management. 9:291-301. 2018
- Conversion of natural forest results in a significant degradation of soil hydraulic properties in the highlands of Kenya. Soil & Tillage Research. 176:36-44. 2018
- Land Use, Land Use History, and Soil Type Affect Soil Greenhouse Gas Fluxes From Agricultural Landscapes of the East African Highlands. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES. 123:976-990. 2018
- Using High-Resolution Data to Assess Land Use Impact on Nitrate Dynamics in East African Tropical Montane Catchments. Water Resources Research. 54:1812-1830. 2018
- The contribution of sectoral climate change mitigation options to national targets: a quantitative assessment of dairy production in Kenya. Environmental Research Letters. 13:34016. 2018
- Land use alters dominant water sources and flow paths in tropicalmontane catchments in East Africa. Hydrology and Earth System Sciences Discussions. 1-32. 2018
- Agriculture-driven deforestation in the tropics from 1990–2015: emissions, trends and uncertainties. Environmental Research Letters. 13:14002. 2018
- Land use affects total dissolved nitrogen and nitrate concentrations in tropical montane streams in Kenya.. Science of The Total Environment. 603:519-532. 2017
- Quantifying the contribution of land use to N2O, NO and CO2 fluxes in a montane forest ecosystem of Kenya. Biogeochemistry. 134:95-114. 2017
- Spatial variability of soil N2O and CO2 fluxes in different topographic positions in a tropical montane forest in Kenya. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES. 122:514-527. 2017
- Spatial variability of soil N2O and CO2 fluxes in different topographic positions in a tropical montane forest in Kenya. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES. 122:514-527. 2017
- How to target climate-smart agriculture? Concept and application of the consensus-driven decision support framework “targetCSA”. Agricultural Systems. 151:234-245. 2017
- Is production intensification likely to make farm households food-adequate? A simple food availability analysis across smallholder farming systems from East and West Africa. Food Security. 9:115-131. 2017
- Smallholder farms in eastern African tropical highlands have low soil greenhouse gas fluxes. Biogeosciences. 14:187-202. 2017
- To mulch or to munch? Big modelling of big data. Agricultural Systems. 153:32-42. 2017
- Reducing emissions from agriculture to meet the 2 °C target. Global Change Biology. 22:3859-3864. 2016
- Multi-gas and multi-source comparisons of six land use emission datasets and AFOLU estimates in the Fifth Assessment Report, for the tropics for 2000–2005. Biogeosciences. 13:5799-5819. 2016
- Groundwater recharge rates and surface runoff response to land use and land cover changes in semi-arid environments. Ecological processes. 5:16. 2016
- Methane and Nitrous Oxide Emissions from Cattle Excreta on an East African Grassland. Journal of Environmental Quality. 45:1531-1539. 2016
- Targeting landscapes to identify mitigation options in smallholder agriculture 2016
- Migration and self-protection against climate change:a case study of Samburu County, Kenya. World Development. 84:55-68. 2016
- Hotspots of gross emissions from the land use sector:patterns, uncertainties, and leading emission sources for the period 2000-2005 in the tropics. Biogeosciences. 13:4253-4269. 2016
- Long-term assessment of soil and water conservation measures (Fanya-juu terraces) on soil organic matter in South Eastern Kenya. Geoderma. 274:1-9. 2016
- Livestock wealth and social capital as insurance against climate risk : a case study of Samburu County in Kenya. Agricultural Systems. 146:44-54. 2016
- Greenhouse gas fluxes from agricultural soils of Kenya and Tanzania. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES. 121:1568-1580. 2016
- Linking agricultural adaptation strategies, food security and vulnerability: evidence from West Africa. Regional Environmental Change. 16:1305-1317. 2016
- Adaptation of agriculture to climate change in semi-arid Borena, Ethiopia. Regional Environmental Change. 16:2317-2330. 2016
- Hotspots of tropical land use emissions: patterns, uncertainties, and leading emission sources for the period 2000–2005. Biogeosciences Discussions. 1-33. 2016
- Climate change adaptation in agriculture: practices and technologies. Messages to the SBSTA 44 agriculture workshops 2016
- Introduction to the SAMPLES approach 2016
- Scaling Point and Plot Measurements of Greenhouse Gas Fluxes, Balances, and Intensities to Whole Farms and Landscapes 2016
- Maize crop residue uses and trade-offs on smallholder crop-livestock farms in Zimbabwe: Economic implications of intensification. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 214:31-45. 2015
- Climate variability and change in Southern Mali: learning from farmer perceptions and on-farm trials. Experimental Agriculture. 51:615-634. 2015
- Smallholder African farms in western Kenya have limited greenhouse gas fluxes. Biogeosciences Discussions. 12:15301-15336. 2015
- Mitigation of agricultural emissions in the tropics: comparing forest land-sparing options at the national level. Biogeosciences. 12:4809-4825. 2015
- Milk: the new white gold? Milk production options for smallholder farmers in Southern Mali.. Animal. 9:1221-1229. 2015
- Feeding, crop residue and manure management for integrated soil fertility management - A case study from Kenya. Agricultural Systems. 134:24-35. 2015
- Reducing uncertainty in nitrogen budgets for African livestock systems. Environmental Research Letters. 9:105008. 2014
- Regional nitrogen budget of the Lake Victoria Basin, East Africa: syntheses, uncertainties and perspectives. Environmental Research Letters. 9:105009. 2014
- Comparative assessment of maize, finger millet and sorghum for household food security in the face of increasing climatic risk. European Journal of Agronomy. 55:29-41. 2014
- Whole-farm nitrogen cycling and intensification of crop-livestock systems in the highlands of Madagascar: An application of network analysis. Agricultural Systems. 126:25-37. 2014
- Climate change mitigation through livestock system transitions. Proceedings of the National Academy of Sciences of the United States of America. 111:3709-3714. 2014
- Evaluation of climate adaptation options for Sudano-Sahelian cropping systems. Field Crops Research. 156:63-75. 2014
- Exploring future changes in smallholder farming systems by linking socio-economic scenarios with regional and household models. Global Environmental Change-human and Policy Dimensions. 24:165-182. 2014
- Exploring gender differences in household food security and implications for climate change adaptation in East Africa 2014
- Improving estimates of GHG emission factors from livestock production systems on smallholder farms 2014
- Linking agricultural adaptation strategies and food security: evidence from West Africa: Poster prepared for the ILRI@40 Workshop, Addis Ababa, 7 November 2014. Nairobi, Kenya: ILRI 2014
- Sources of vulnerability to a variable and changing climate among smallholder households in Zimbabwe : A participatory analysis. Climate Risk Management. 3:65-78. 2014
- Biomass use, production, feed efficiencies, and greenhouse gas emissions from global livestock systems. Proceedings of the National Academy of Sciences of the United States of America. 110:20888-20893. 2013
- Accuracy and precision of photoacoustic spectroscopy not guaranteed. Global Change Biology. 19:3565-3567. 2013
- Gas pooling:A sampling technique to overcome spatial heterogeneity of soil carbon dioxide and nitrous oxide fluxes. Soil Biology & Biochemistry. 67:20-23. 2013
- Managing soil fertility to adapt to rainfall variability in smallholder cropping systems in Zimbabwe. Field Crops Research. 154:211-225. 2013
- Transitions in agro-pastoralist systems of East Africa: Impacts on food security and poverty. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 179:215-230. 2013
- Effects of climate variability and climate change on crop production in southern Mali. European Journal of Agronomy. 49:115-125. 2013
- The roles of livestock in developing countries. Animal. 7:3-18. 2013
- Crop Productivity and the Global Livestock Sector: Implications for Land Use Change and Greenhouse Gas Emissions. American Journal of Agricultural Economics. 95:442-448. 2013
- Exploring global changes in nitrogen and phosphorus cycles in agriculture induced by livestock production over the 1900-2050 period. Proceedings of the National Academy of Sciences of the United States of America. 110:20882-20887. 2013
- Identifying pro-poor mitigation options for smallholder agriculture in the developing world: A multi-criteria and across-scales assessment 2013
- Increasing nutrient use efficiency through improved feeding and manure management in urban and peri-urban livestock units of a West African city: A scenario analysis. Agricultural Systems. 114:64-72. 2013
- The Use of Woodland Products to Cope with Climate Variability in Communal Areas in Zimbabwe. Ecology and Society. 18. 2013
- Conservation Agriculture in mixed crop–livestock systems: Scoping crop residue trade-offs in Sub-Saharan Africa and South Asia. Field Crops Research. 132:175-184. 2012
- Managing nutrient cycles in crop and livestock systems with green technologies 2012
- Organic matter matters 2012
- Communicating complexity: Integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development. Agricultural Systems. 104:191-203. 2011
- Competing use of organic resources, village-level interactions between farm types and climate variability in a communal area of NE Zimbabwe. Agricultural Systems. 104:175-190. 2011
- Carbon and nutrient losses during manure storage under traditional and improved practices in smallholder crop-livestock systems - evidence from Kenya.. Plant and Soil. 328:253-269. 2010
- Assessing household level vulnerability to climate change 2010
- Identifying key entry-points for strategic management of smallholder farming systems in sub-Saharan Africa using the dynamic farm-scale simulation model NUANCES-FARMSIM. Agricultural Systems. 102:89-101. 2009
- Lifetime productivity of dairy cows in smallholder farming systems of the Central highlands of Kenya.. Animal. 3:1044-1056. 2009
- Beyond resource constraints - Exploring the biophysical feasibility of options for the intensification of smallholder crop-livestock systems in Vihiga district, Kenya. Agricultural Systems. 101:1-19. 2009
- Low-Cost Economic and Environmental Performance Assessment of Farm Households Systems: Application to Mixed Crop-Livestock Systems in the Ethiopian Highlands. Journal of Sustainable Agriculture. 32:565-595. 2008
- Manure as a key resource within smallholder farming systems: Analysing farm-scale nutrient cycling efficiencies with the NUANCES framework. Livestock Science. 112:273-287. 2007
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dataset
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document
- What works where for which farm household: Estimated effects of different interventions on food availability across household distributions in East and West Africa 2015
- Gender dimensions of agricultural innovation awareness and adoption 2014
- Linking agricultural adaptation strategies and food security: Evidence from West Africa 2014
- Toward a protocol for quantifying the greenhouse gas balance and identifying mitigation options in smallholder farming systems 2013
- Workshop report: Farm-household modelling with a focus on food security, climate change adaptation, risk management and mitigation: a way forward 2012
- Role of herbivores in developing countries 2011
- Integrated assessment of nutrient management options in smallholder farming systems: the NUANCES framework 2009
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hide from search
- Citizen science in hydrological monitoring and ecosystem services management: State of the art and future prospects.. Science of The Total Environment. 133531. 2019
- Replication data for:Spatial variability of soil N2O and CO2 fluxes in different topographic positions in a tropical mountain forest in Kenya 2017
- Comments to "Is an integrated farm more resilient against climate change? A micro-econometric analysis of portfolio diversification in African agriculture". Food Policy. 452-454. 2011
- Nitrogen cycling efficiencies through resource-poor African crop-livestock systems. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 261-282. 2006
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review
- Impacts of land use and land cover change on surface runoff, discharge and low flows : Evidence from East Africa. JOURNAL OF HYDROLOGY-REGIONAL STUDIES. 49-67. 2018
- Farm household models to analyse food security in a changing climate: a review. GLOBAL FOOD SECURITY-AGRICULTURE POLICY ECONOMICS AND ENVIRONMENT. 77-84. 2014
- A meta-analysis of long-term effects of conservation agriculture on maize grain yield under rain-fed conditions. Agronomy for Sustainable Development. 657-673. 2011