title: Long term demographic effect of a constant stream of immigration when the population is not reproducing itself.
abstract: The author describes the use of a model to investigate "the age composition of the stationary population resulting from a condition of below replacement fertility and a continuous stream of immigrants, the size of which for any age remain invariant over time.... We have shown that the number dying among [migrants] is the same as the number of them entering over any time interval, and that is precisely how their stationarity is maintained."  The geographical focus is on developed countries that are experiencing below-replacement fertility levels. (SUMMARY IN FRE AND SPA)
authors.forename: S
authors.initials: S
authors.lastname: Mitra
mesh_terms: D017677:Age Distribution; D000367:Age Factors; D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D005006:Ethnicity; D005298:Fertility; D008962:Models, Theoretical; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011158:Population Growth; D012106:Research; D014171:Transients and Migrants
keywords: Age Distribution; Age Factors; Below Replacement Fertility; Comparative Studies; Demographic Factors; Demographic Impact; Developed Countries; International Migration; Migrants; Migration; Models, Theoretical; Nationality; Native-born; Population; Population Characteristics; Population Decrease; Population Dynamics; Population Growth; Research Methodology; Studies