hypothesis based typologies for capturing diversity
TRANSCRIPT
Hypothesis based typologies for capturing diversity
Stephanie Alvarez, Wim Paas, Katrien Descheemaeker, Jeroen GrootWageningen University, Farming Systems Ecology & Plant Production Systems groups
Humidtropics
Aim of typologies:- Capture variability of farming systems- Understand heterogeneity in regions
Introduction
Hengsdijk et al., 2014; N2Africa report – 2 action sites in Kenya
Franke et al., 2014
Aim of typologies:- Capture variability of farming systems- Understand heterogeneity in regionsFor 1. Targeting and tailoring2. Scaling out; dissemination3. Selection of representative farms4. Scaling up; extrapolate to larger scale
Introduction
Major steps: 1. What is the objective? 2. Hypothesis on farming systems diversity3. Data collection4. Selection of key variables5. Clustering the farms6. Hypothesis and typology verification
Overall:Combine expert knowledge from participatory work with statistical analysis
Guidelines
Major steps: 1. What is the objective?
Specific: Improve forage production in mixed systems of Rwanda Broad: Improve food security in the humid tropics
Guidelines
Major steps: 2. Hypothesis on farming systems diversity
Participatory process for ex-ante description of farm types ; identification of discriminating criteria
Guidelines
Major steps: 3. Data collection4. Selection of key variables
Variable categories:- Structural vs. functional characteristics- Resource availability vs. management- Biophysical vs. socio-economic - Farm vs. external
key variables: 5 - 46, av. 15sampled farms: 18 – 2746, av. 138 #farms > 5 * #variables
Guidelines
Major steps: 5. Clustering the farms
Guidelines
Major steps: 5. Clustering the farming systems
a. Multivariate statistics (PCA, MCA, MFA)Discriminating variables
Guidelines
Guidelines
Major steps: 5. Clustering the farming systems
a. Multivariate statistics (PCA, MCA, MFA)Discriminating variablesb. Cluster analysis
Major steps: 6. Hypothesis and typology verification
Guidelines
Major steps: 6. Hypothesis and typology verification
Example from Ghana – participatory and statistical approach
Guidelines
Poster, Katja Kuivanen et al.
Major steps: 1. What is the objective? 2. Hypothesis on farming systems diversity3. Data collection4. Selection of key variables5. Clustering the farms6. Hypothesis and typology verification
Guidelines
coffee >35%
grazing land>20%
khat>30%
enset>35%
Classification trees and trends
Homegarden types in Ethiopia
Khat Enset-cereal
Enset Enset-coffee
Enset-livestock
Khat Enset-cereal
Enset Enset-coffee
Enset-livestock
Area
shar
e of
kha
t (%
)
Area
shar
e of
coff
ee (%
)
Khat Enset-cereal
Enset Enset-coffee
Enset-livestock
Area
shar
e of
ens
et (%
)
Area
shar
e of
gra
zing
land
(%)
Khat Enset-cereal
Enset Enset-coffee
Enset-livestock
Farms
4 types
Enset-coffee
3 types
Enset-livestock
2 typesEnset-cereal-
vegetable
Enset
Khat
khat >30%
coffee>35%
Grazing land>20%
Enset>35%
1991 2013 20132 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 1 12 1 12 12 12 12 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 44444 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 3 44 3 44 3 44 3 44 3 44 34 34 34 3 54 3 54 3 54 3 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 1 54 1 54 1 54 1 54 1 54 1 54 1 54 1 55553 2 53 2 53 5 53 5 53 5 53 5 53 5 53 5 53 3 53 3 53 3 53 3 53 3 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 43 43 43 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 22225 2 25 2 25 2 25 2 25 2 25 2 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 3 25 3 25 35 35 45 4 35 4 35 4 35 4 35 4 35 4 35 4 35 4 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 33331 1 31 1 31 1 31 1 31 1 31 1 31 1 31 1 3
Enset
Enset-livestock
Enset-coffee
Enset-cereal-vegetable
Khat
1991 2013 20132 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 5 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 3 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 4 12 1 12 1 12 12 12 12 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 42 1 44444 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 2 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 5 44 3 44 3 44 3 44 3 44 3 44 34 34 34 3 54 3 54 3 54 3 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 4 54 1 54 1 54 1 54 1 54 1 54 1 54 1 54 1 55553 2 53 2 53 5 53 5 53 5 53 5 53 5 53 5 53 3 53 3 53 3 53 3 53 3 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 4 53 43 43 43 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 23 1 22225 2 25 2 25 2 25 2 25 2 25 2 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 5 25 3 25 3 25 35 35 45 4 35 4 35 4 35 4 35 4 35 4 35 4 35 4 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 35 1 33331 1 31 1 31 1 31 1 31 1 31 1 31 1 31 1 3
Khat
Enset-livestock
Enset-cereal-vegetable
Enset
Enset-coffee
Classification trees and trends
31%
30%
19%
17%
3%
24%
24%
21%
18%
13%
Spatial organization of farm types
Type Main characteristics
1 HRE, large cattle herd, ample off-farm activities
2 MRE, large farms, market orientation
3 MRE, small ruminants, on-farm labour intensive
4 MRE, small ruminants, ample hired labour
5 LRE, maize dominated, few off-farm activities
6 SRC, livestock sales, ample off-farm activities
Katja Kuivanen
Small & medium farmsSmall ruminants
Market oriented farms
High resource endowed farms
Statistical background and examples
Appendix C of the report
R code to explore the data and run the analysis
Tips for interpretation of statistical results
Conclusions
Typology guidelines: 6 steps, no recipe book
Interpretation of results ; degree of subjectivity
Combine statistical methods with participatory work
Thank you
https://humidtropics.cgiar.org/constructing-typologies-to-capture-farming-systems-diversityhttp://humidtropics.cgiar.org/openaccess/?did=231