Sahelian population spatial expansion over the
last century is about to reach its end. Meanwhile,
rural society managements of economic activities
have evolved. But such evolutions occur along very
different patterns in the Nigerien Sahel.
Regional, village and individual level interviewing
tools helped to build individual behavior rules in a
model simulating the populations and
their "terroirs" along two or three generations.
Simulations show that once dominant
patriarchal families have shifted towards
mononuclear ones around the 70's and the famine
crises. Villages specialize themselves: more
a "terroir" is well endowed, more its population
involves itself in local activities but more the
population also subdivides itself into groups
according to their wealths.
Introducing a development project reinforce this
social differentiation: only well-endowed sites and
among them, only favored groups have the saving
capacity to get involved.
Such an approach is efficient in underlining the
huge impact of micro level constraints on long-term
population evolutions, which can be very useful in
rural development project evaluations.
last century is about to reach its end. Meanwhile,
rural society managements of economic activities
have evolved. But such evolutions occur along very
different patterns in the Nigerien Sahel.
Regional, village and individual level interviewing
tools helped to build individual behavior rules in a
model simulating the populations and
their "terroirs" along two or three generations.
Simulations show that once dominant
patriarchal families have shifted towards
mononuclear ones around the 70's and the famine
crises. Villages specialize themselves: more
a "terroir" is well endowed, more its population
involves itself in local activities but more the
population also subdivides itself into groups
according to their wealths.
Introducing a development project reinforce this
social differentiation: only well-endowed sites and
among them, only favored groups have the saving
capacity to get involved.
Such an approach is efficient in underlining the
huge impact of micro level constraints on long-term
population evolutions, which can be very useful in
rural development project evaluations.