INTRODUCTION 'Do cities need kids?'-in the February 2015 issue of Governing Magazine, Alan Greenblatt used this provocative title for his article on gentrification in Seattle, Washington. According to him, Seattle is 'not necessarily a place that is welcoming to families' (Greenblatt, 2015, p. 1). The population of downtown Seattle has grown significantly in recent years, and families have indeed taken ABSTRACT Since the 1980s and 1990s, many metropolitan areas in north america and europe have registered population growth within the urban core, driven primarily by younger, better-educated and higher-income people-a phenomenon often referred to as 'urban renaissance' or 're-urbanization'. to date, the research on this topic has primarily focused on the socio-spatial implications, especially with the type and intensity of displacement pressures affecting low-income households. demographic manifestations of this have rarely been explicitly targeted by empirical studies. this paper addresses the change of intra-regional age structures in metro areas that have witnessed a demographic revival of their core areas. it hypothesizes that an increasing segregation by age is a universal pattern of urban demographic change in advanced Western countries. With data for six german and uS metro areas over a period of 20 years (1990-2010), strong evidence for this proposition was found: in all regions, the urban core became 'younger' over time, whereas the ageing of the population was more dynamic in suburban areas. However, the analysis also revealed transatlantic differences: whereas a kind of 'childless' urban renaissance can be posited for the american cities, families in germany were at least partially involved in the process of densification of inner-city areas. the analysis provides evidence for a general trend towards re-urbanization and age segregation in regions of both countries. at the same time, re-urbanization is assessed as a strongly context-dependent development with distinctly varying socio-spatial characteristics.
We examine the impact of foreign migration on regional disparities in population development in Germany by analysing spatial patterns and determinants at the county level for the period of 2007-2017. Counterfactual analyses show that international migration has been the major component of population growth across German regions. However, immigration has mainly been directed towards large cities and highly urbanised areas and has therefore reinforced the existing spatial disparities in population development. Spatial econometric models nonetheless reveal that international migrants are not attracted by agglomeration per se. The location choices of international migrants were mainly driven by existing regional ethnic networks and factors that are related to different personal life stages, such as education or changes in family status. Furthermore, the estimated regional determinants vary strongly across migrant groups from different geographical backgrounds as well as between the external and internal migration of foreigners.
The aim of this paper is to review quantitative large-N studies that investigate the effects of climate change on migration flows. Recent meta-analyses have shown that most studies find that climate change influences migration flows. There are however also many studies that find no effects or show that effects are dependent on specific contexts. To better understand this complexity, we argue that we need to discuss in more detail how to measure climate change and migration, how these measurements relate to each other and how we can conceptualise the relationship between these two phenomena. After a presentation of current approaches to measuring climate change, international and internal migration and their strengths and weaknesses we discuss ways to overcome the limitations of existing analytical frameworks.
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