Arable land in western Kenya is under considerable pressure from increasing human population. Rural households depend on farming for at least part of their livelihood, and poverty rates are among the highest in Kenya. Land is often depleted of nutrients, and for most farmers, access to inputs and...
Waithaka, M.M.
,
Thornton, Philip K.
,
Herrero, Mario T.
,
Shepherd, Keith D.
,
[Bio-economic evaluation of farmers’ perceptions of viable farms in western Kenya]
,
Bio-economic evaluation of farmers’ perceptions of viable farms in western Kenya
Despite the fact that many smallholder farming systems in developing countries revolve around the interactions of crop and livestock enterprises, the modelling of these systems using combinations of detailed crop and livestock models is comparatively underdeveloped. A wide variety of separate cro...
Thornton, Philip K.
,
Herrero, Mario T.
,
[Integrated crop-livestock simulation models for scenario analysis and impact assessment]
,
Integrated crop-livestock simulation models for scenario analysis and impact assessment
A dynamic agriucltural land-use model based on a Markov process and governed by a few simple decision rules is described. Currently, the model is purely conceptual, and was designed with one objective: to investigate the possibility of constructing top-down land-use models based on as few process...
Well-tested computer simulation models of the growth, development, and yield of annual crops are being used for a wide range of purposes, including the prediction of impacts of different management practices and land use systems on food production, farmers' profitability, and the environment. Pr...
Thornton, Philip K.
,
Booltink, H.W.G.
,
Stoorvogel, J.J.
,
[A computer program for geostatistical and spatial analysis of crop model outputs]
,
A computer program for geostatistical and spatial analysis of crop model outputs
Questions as to whether public investment in international agricultural research is a ‘Good Thing’ or not may best be addressed using two arguments: (1) justifications based on whether or not past investments have yielded substantial benefits to societies and the resource-poor; and (2) that futur...
Kruska, R.L.
,
Reid, Robin S.
,
Thornton, Philip K.
,
Henninger, N.
,
Kristjanson, Patricia M.
,
[Mapping a livestock-oriented agricultural production system classification for the developing regions of the world]
,
Mapping a livestock-oriented agricultural production system classification for the developing regions of the world
In Kajiado District, Kenya, ranches held communally by Maasai are being subdivided into individually owned parcels. Livestock owners know that herds on parcels that are too small cannot be viable, but the decline in the capacity of parcels to support livestock has not been quantified. We used eco...
Boone, Randall B.
,
BurnSilver, S.V.
,
Thornton, Philip K.
,
Worden, J.S.
,
Galvin, K.A.
,
[Quantifying declines in livestock due to land subdivision]
,
Quantifying declines in livestock due to land subdivision
Fragmentation of the ecosystems of the earth into spatially isolated units has emerged as a primary component of global change. Often, fragmentation results from actions that are intended to enhance human livelihoods and well-being; however, there are often costs to ecosystems and human economies...
Hobbs, N.T.
,
Galvin, K.A.
,
Stokes, C.J.
,
Lackett, J.M.
,
Ash, Andrew J.
,
Boone, Randall B.
,
Reid, Robin S.
,
Thornton, Philip K.
,
[Fragmentation of rangelands: implications for humans, animals, and landscapes]
,
Fragmentation of rangelands: implications for humans, animals, and landscapes
Making decisions in natural resource management involves an understanding of the risk and uncertainty of the outcomes, such as crop failure or cattle starvation, and of the normal spread of the expected production. Hedging against poor outcomes often means lack of investment and slow adoption of ...
Jones, Peter G.
,
Thornton, Philip K.
,
[Spatial modeling of risk in natural resource management]
,
Spatial modeling of risk in natural resource management
This study uses heteroskedastic Tobit and Censored Least Absolute Deviations models to examine the impacts of dairy cow ownership on selected outcomes for a sample of 184 households in coastal Kenya. The outcomes examined include gross household cash income, gross non-agricultural income, consump...
Nicholson, C.
,
Thornton, Philip K.
,
Muinga, R.W.
,
[Household-level impacts of dairy cow ownership in coastal Kenya]
,
Household-level impacts of dairy cow ownership in coastal Kenya
A broad framework for the assessment of the economic impact of animal diseases and control of these diseases is described. Various levels of analysis are discussed, from the herd, to the household, the sector, the nation and the region. For each of these levels, methods of economic impact assessm...