Based on extensive and long-term ethnographic fieldwork carried out between 2002 and 2009, and by analysing the presence, use and struggles over public space of cartoneros and vecinos in middle-class and central neighbourhoods of the city of Buenos Aires, this article examines practices, moralities and narratives operating in the production and maintenance of social inequalities. Concentrating on spatialised interactions, it shows how class inequalities are reproduced and social distances are generated in the struggle over public space. For this, two social situations are addressed. First, we explore the way in which cartoneros build routes in middle-class neighbourhoods in order to carry out their task. Second, we present an analysis of the eviction process of a cartonero settlement in the city.

This study focuses on the first gated communities in Belo Horizonte, Brazil, which were developed between 1951 and 1964. In an era of democracy and economic growth, the Brazilian government promoted infrastructural improvements and attracted foreign capital. However, there was a concomitant increase in inequality and poverty, and deep-rooted political conflicts. Notwithstanding the varying motivations of those who chose to live in gated communities, this article argues that the attempt by elites to establish a lifestyle of leisure and European-style sophistication in these enclaves had political, ethnic, class and gender implications. Their self-segregation strengthened the patrimonialism and authoritarianism in politics that would prevail during the ensuing military dictatorship.

Patterns of association in many ungulate species vary throughout the year, with males periodically segregating from females. Sexual segregation can occur if males and females use different habitats (habitat segregation), occupy exclusive ranges (spatial segregation) or occur in separate social groups (social segregation). Previous studies on social segregation in ungulates have focused mostly on non-reproductive periods and species in temperate systems with short mating seasons. This study examined social segregation in African buffalo Syncerus caffer at Hluhluwe-iMfolozi Park, South Africa, during their 6-month mating season. During this period, mature male buffalo alternated between joining mixed-sex herds which comprise females and young, and small all-male groups. Activity patterns of male buffalo in both group types were examined to determine if differences in time allocation or activity asynchrony could explain the observed segregation. Mature males foraged for less time than both adult females and younger males when they were with mixed herds. Mature male buffalo differed in how their active time was apportioned to foraging and reproductive activities between the two group types. Females maintained group cohesion despite only low synchrony in activity, therefore segregation of male buffalo could not be explained by the activity budget hypothesis. For males in mixed-sex herds, reproductive activities were apparently at the expense of foraging time. The high time and energy costs of reproductive activities were probably responsible for the periodic separation of male buffalo from mixed herds during the extended mating period.

Group pattern and social segregation of the sexually size dimorphic Przewalski's gazelle Procapra przewalskii were studied for 7 years in the Qinghai Province, China. The main social units were: female groups; male groups; mixed groups. Mixed groups were the largest and most visible, whereas adult male groups were small and of similar size. The group size of the gazelle varied during different seasons (P < 0.002) and the type of social groups (P < 0.001). Mixed-sex groups were larger than female groups or male groups across all the seasons (P < 0.008). Adult males and females were mainly in separate groups except during the rut. Groups of adult females were the most common social unit in Przewalski's gazelle, followed in frequency by adult male groups and mixed groups. From late June to late August, social separation was most pronounced. From late October to mid-September, social segregation was not pronounced. Social segregation showed significant seasonal differences in Przewalski's gazelle (P < 0.004), especially between the rut and other seasons (P < 0.008). The pattern of social segregation of groups and behaviours observed imply that social factors play important roles in social segregation and group formation.