Symbolic ethnicity and Herbert Gans: race,religion, and politics in the twenty-first century

This article attempts to assess some of Herb Gans’s influential contributions, not only in his important paper on symbolic ethnicity, but also his wider discussion of the changing role of race, ethnicity, and religion in American society. In a period spanning more than half a century, he has helped to raise key questions and to suggest avenues of research that have stimulated debates and the re-evaluation of a complex, controversial, and highly dynamic field of social science research and policy.     

Climate change in conservation areas of South Africa and its potential impact on floristic composition: a first assessment

Projected climate change has been suspected of affecting the biota of conserved nature areas in different and significant ways. Nevertheless, strategic management within some nature conservation agencies appears relatively unprepared for the possible consequences of climate change. National level planning of reserve design networks has also tended to skirt the issue, possibly owing to insufficient analysis. This paper provides a first assessment of the possible effects of climate change on plant diversity within the protected area network of South Africa. A climate change scenario of increased temperature but no change in precipitation resulted in derived optimum growth days increasing in some reserves through increased temperature extending the growing season. In some other reserves optimum growth days declined through greater evapotranspiration. We concentrated on the larger reserves of the latter group for which conditions that are more limiting were predicted. Plant species were evaluated in terms of their critical limits in growth days and minimum temperature. Over a third of the species analysed for one reserve (Augrabies Falls National Park and Melkbosrand) was indicated to become locally extinct with climate change. Another reserve in the region showed fewer than 1% local extinctions. It is clear that although a certain magnitude of climate change is a prerequisite for these extinctions, the rate and number of extinctions depend strongly on the different environmental tolerances of the specific biotic components of the conserved area. Potential immigration of other species to Augrabies Falls/Melkbosrand required to balance the projected extinctions with climate change would need migration abilities and conditions that are unlikely to be met. A net decrease in plant diversity may thus be expected. The results confirm that with the climate change scenario used, the concept of sustaining species through fixed protected areas may be fundamentally flawed, at least in certain areas.     

The apple,the tree,and a space to grow in

The idea for the study presented in Spanish Legacies: the coming of age of the second generation was sparked by the series of unrests from immigrant youths in a number of cities across Europe. The discontent expressed by the young generation of immigrants presented a sharp indicator of how little is known about young people of foreign origin growing up as immigrant residents in Europe, despite their significant number (10 per cent in France, 13 per cent in Spain and 15 per cent in Ireland by 2010). The success or failure of immigrants’ integrational processes, considering cultural factors and language barriers as challenges experienced by immigrants, can have major political and social impact on the regions where they reside. It is these challenges that are investigated in depth, in this book.     

A family affair: how and why second-generation Filipino-Americans engage in transnational social and economic connections

In this article, I argue that second-generation migrants can engage in cross-border ties as a result of first-generation migrants mediating relationships between their children and those abroad. This paper draws on interviews with second-generation Filipino-Americans to demonstrate how and why respondents engage in mediated social and economic cross-border ties collectively with first-generation migrant parents. Second-generation Filipino-Americans feel an obligation, not necessarily to those in the Philippines, but to parents who request that their children engage in transnational social and economic ties. Just as parents serve as the means and reasoning for why these transnational connections persist among their children, parents play a role in why ties fail to manifest. By looking into why some engage in social and economic cross-border ties while others do not, I provide insight into how the children of migrants participate in the transnational social field.     

Beyond multiculturalism: interculturalism,diversity and urban governance

This review article discusses the volume by Giovanna Marconi and Elena Ostanel, eds. The Intercultural City: Migration, Minorities and the Management of Diversity, I.B. Tauris, 2016, in the larger context of studies on inclusion of migrants in cities. It evaluates the merits of interculturalism argument presented by the editors and contributing authors as it is applied to the migrants’ and refugees’ needs and demands from the city and public at large, and the transformation of identities of public spaces challenging assumptions of cultural uniformity at the national level. The issue of the viability of equitable and normatively justifiable governance of difference above and beyond multiculturalism is a very important one, especially so in an era where Deferred Action for Childhood Arrivals and expulsions of the Dreamers from the American cities have become part of our daily reality.     

Group extinction and fusion in free-ranging vervet monkeys

Three cases of group fusion were observed among vervet monkeys in Amboseli National Park, Kenya, during the 1984 drought. In all cases, group fusion involved the migration of at least two females into a small neighboring group. Following migration, the females' natal groups ceased to exist. Although migrants initially assumed low ranks, none received high rates of aggression, and two rose in rank 6 months after their arrival. Migrant females appeared to employ a number of “strategies,” including grooming, allomothering, participation in intergroup encounters, and the formation of coalitions against males and each other to hasten integration. Results suggest that the causes of male and female migration differ fundamentally, and that group fusion occurs primarily in response to the inability of small groups of females to compete successfully with other groups for resources.     

Dung pad residence time covaries with male morphology in the dung beetle Onthophagus taurus

1. The immigration and emigration behaviours of Onthophagus taurus were investigated in a combination of field and laboratory experiments to examine patterns of dispersal in this species. 2. On average, the mean proportion of major males immigrating to baited pitfall traps decreased significantly with time. In contrast, the mean proportion of minor males and females did not change with time. 3. The time taken to emigrate from a dung pad differed significantly among major males, minor males, and females. This difference arose because major males spent a significantly shorter period of time residing within the dung pad. On average, more than 50% of major males had emigrated from the dung pads after 30 h, some 4 h earlier than minor males and females. 4. When the effects of body size were controlled, major males with longer horns were shown to have longer wings. Because major males spend more time in flight, longer wings may be an adaptation to more frequent dispersal. Alternatively, longer wings in major males may compensate for the production of aerodynamically costly horns.     

Genetic differentiation in the Bladder campions, Silene vulgaris and S. uniflora (Caryophyllaceae), in Sweden

Allozyme variation was studied in Swedish populations of Silene vulgaris (a widespread weed), S. uniflora ssp. uniflora (restricted to coastal habitats) and S. uniflora ssp. petraea (endemic to Sweden and confined to open limestone habitats). The taxa are diploid, gynodioecious, perennial herbs and showed high levels of within-taxon and within-population gene diversity at four polymorphic loci. Within-taxon diversity was highest (H_tax=0.52) in S. vulgaris and lowest (H_tax=0.36) in S. uniflora ssp. uniflora. The weedy S. vulgaris has more alleles than either of the other two taxa and 5 out of a total of 27 alleles are unique to S. vulgaris. Most of the gene diversity within each of the taxa is accounted for by within-population diversity. The between-population component of diversity is 10% in S. vulgaris , and 24% and 5%, respectively, in S. uniflora ssp. uniflora and ssp. petraea. Hybrids may occur between S. vulgaris and S. uniflora , but introgression is limited by the species' ecology. Neither allozyme nor distributional data support the suggestion that ssp. petraea is a recent hybrid between S. vulgaris and S. uniflora ssp. uniflora , although an older hybrid origin for ssp. petraea is possible. Patterns of allele frequency variation suggest that there has been some historical gene flow between taxa, outside their present areas of sympatry. It is likely that the two subspecies of S. uniflora , which occur in naturally open habitats, were able to colonize Sweden during the Late Glacial or early post-glacial, whereas S. vulgaris followed the spread of agriculture into Sweden.