Population calculations
Q. How are the issues of migration and location of residence handled when calculating population figures?
A. Most people, even nomadic pastoralists, have a place that they (at least mentally) consider to be their base or their home. Provided the majority of household members spend the majority of the year at that base in years that are not particularly bad, then this should be considered their home and they should be included in the livelihood zone. Examples: For a highland Ethiopian family that sends two household members to work in the lowlands for 4 months of the year almost every year, the highlands are their home and livelihood zone. In contrast, wealthy Nicaraguan families who have agricultural businesses in rural livelihood zones but live in towns for most of the year are part of the economy of the rural livelihood zones but are not part of the population of those livelihood zones.