Snake communities on the urban fringe in the Sonoran Desert: influences on species richness and abundance

Sonoran Desert habitat in southern Arizona is increasingly altered by urban development near metropolitan areas. Understanding how reptiles respond in these impacted habitats is critical to conservation efforts to retain intact biotic communities, especially those with a high diversity of reptile species. We surveyed snakes at one impacted site on the northern edge of the Phoenix metropolitan area in desert/urban interface, and at another site in a desert/rural interface near Florence, Arizona. The site near Phoenix was lower in species richness (15 spp.), and evenness: two snake species accounted for 75 % of all snakes encountered (total = 420). The site near Florence was higher in species richness (19 spp.), and a more even community: no species accounted for more than 20 % of snakes encountered (total = 594). Sampling methodology had a strong influence on species richness and abundance of snakes at the respective sites: road riding, coverboards, and traps each provided evidence of unique species missed by other methods. These results were compared with inventories at three other sites in the central Sonoran Desert of Arizona, and are consistent with the view that the impacted site near Phoenix is uneven, potentially as a result of a single species reacting to shifts in prey availability.     

Shared housing among young adults: avoiding complications in domestic relationships

One pathway by which young adults in the Western world are navigating housing difficulties is to pragmatically share costs by living or flatting with peers. The current study sought to add to the limited literature on this lifestyle through the application of discursive psychology to understanding the social dynamics of relationships in the intimacy of these households. Data was drawn from interviews with experienced New Zealand house sharers aged 20–35. Analysis is presented of two spontaneous discourses, which emerged, both dealing with competing tensions on the merits of living with couples or single people and friends or strangers. Whereas couples are not averse to sharing with other couples, single people tend to elect to share with unattached individuals. Favouring friends as housemates was the norm among town dwellers, while city folk were more open to flatting with strangers. Talk was driven by the unquestioned value associated with having a working living arrangement, demonstrating the acute awareness young adults have of potential problems that can destabilise or sustain domestic harmony. Valuable insight is provided into the complexity of shared housing relationships as well as contemporary young adulthood.     

Social media and political discussion: when online presence silences offline conversation

ABSTRACT

This paper explores the relationship between the use of social media, attitudinal strength, perceived opinion agreement with social ties, and willingness to discuss a political issue in different online and offline contexts. Unlike the anonymous environment of some Internet forums, social media are closely tied to the relationships and activities of everyday life. Social media increasingly make ties from offline contexts persistent online, and, because of the ambient nature of these technologies, awareness of the opinions, interests, and activities of social ties has become pervasive. As such, the use of social media is likely to affect everyday conversation about political issues in on- and offline contexts, including the home, workplace, social gatherings with friends, community meetings, and on social network sites (SNSs). Based on a national probability survey, we find that the use of SNSs (i.e., Facebook and Twitter) has a direct, negative relationship to deliberation in many offline settings. Some uses of these platforms are associated with having a lower, perceived opinion agreement with social ties. As part of a spiral of silence, this further reduces the willingness of social media users to join political conversations in some offline settings. Only those with the strongest attitudes on an issue are immune.     

Do perceptions of their partners’ childbearing desires affect young women’s pregnancy risk? Further study of ambivalence

We explore whether young women’s perceptions of their sexual partners’ childbearing desires contribute to their risk of pregnancy. We used weekly journal data collected from 787 young women to measure their childbearing desires and their perceptions of their partners’ childbearing desires. We then conducted hazard modelling to predict pregnancy risk with variables based on interactions between the women’s desires and their perceived partners’ desires. Models that include perceived partners’ desires perform better than one based on women’s desires alone. The best model contains three significant predictors: one confirms the importance of pronatal, ambivalent, and indifferent desires for pregnancy risk; one indicates that the perceived partners’ antinatal desires reduce women’s pregnancy risk; and one suggests that women who both perceive their partners accurately and are in agreement with them have a lower pregnancy risk. The results indicate that perceived partner data can improve prediction and enhance our understanding of pregnancy risk.     

Equity Ownership in Cross‐border Mergers and Acquisitions by British Firms: An Analysis of Real Options and Transaction Cost Factors

The authors investigate the factors influencing the share of equity ownership sought in cross‐border mergers and acquisitions (CBM&As). Drawing on real options theory and transaction cost economics (TCE), they address and hypothesize key factors linked to commitment under exogenous uncertainty and the separation of desired and non‐desired assets’ influence on share of equity sought by acquiring firms in CBM&As. Empirical analysis based on 1872 CBM&As undertaken by British firms in both developed and emerging economies shows that British MNEs are more likely to pursue a partial acquisition in a target foreign firm when those foreign firms are from culturally distant countries. Further, findings support the view that the high cost of separating desired assets from non‐desired assets motivates firms to make a partial acquisition rather than acquire the target completely. This is one of the first studies to use real options theory to address the cost of commitment under exogenous uncertainty, as well as TCE logic to address the separation of desired and non‐desired assets in the target firm while analysing equity ownership sought in CBM&As. Empirically, this paper contributes by examining CBM&As by British firms in both developed and emerging markets.     

MATCHED PAIRS DISCRIMINATION: METHODOLOGY AND AN INVESTIGATION OF CORPORATE ACCOUNTING POLICIES

The matched-pairs methodology is becoming increasingly popular as a means of controlling extraneous factors in business research. This paper develops discriminant procedures for matched data and examines the properties of these methods. Data from a recent study by Hunt [14] on the determinants of inventory method choice are used to contrast the performance of the different methods. While all of the methods yield the same set of discriminating variables, those procedures that allow for the dependence among observations within a pair provide greater classificatory power than traditional multivariate techniques.     

The diluted working classes of rural England and Wales

This paper asks, what are the attributes of the rural working class population in England and Wales? Drawing on the Office for National Statistics’ (ONS) Longitudinal Study (LS), household and personal attributes at both the 1991 and 2001 Censuses are examined, with a view to exploring how far the rural working classes can be conceptualised as a cohesive occupational group; in other words, is the traditional vision of the rural working classes, as comprising a cohesive occupational community, still accurate? The results show this understanding is inaccurate. Social dynamism turns out to be high in rural areas, with little uniformity in the rural population with working class occupations, not simply due to occupational change but also as a result of cohabitation with those of other occupational grades and as a consequence of population turnover through migration. The paper indicates that caution is needed over messages in the rural studies literature concerning the magnitude of disadvantages that the rural working classes face, in good part because the composition of rural households with working class constituents is so dynamic.     

Toward Disentangling Fathering and Mothering: An Assessment of Relative Importance

This study employed dominance analysis to assess the relative importance of maternal and paternal support, behavioral control, and psychological control in explaining depression, antisocial behavior, and social initiative within 644 adolescents. We noted the lack of replicated findings concerning differential effects of mothers and fathers and employed an approach that considered mothers’ and fathers’ overlapping predictive abilities in determining their relative importance. Results lend support to the overall parental framework and additionally suggest (a) mothers’ behavioral control is relatively more important than fathers’ in explaining sons’ subsequent antisocial behavior, (b) fathers’ support is relatively more important than mothers’ support in explaining subsequent youth social initiative, and (c) mothering and fathering tend to have a cross‐gendered effect on early adolescents’ depression.     

Cairo's Zabaleen garbage recyclers: Multi-nationals’ takeover and state relocation plans

The paper investigates recently launched plans to privatize solid-waste management in Cairo, focusing on its adverse effects on the sustainability of the associated recycling economy and urban settlement system of the garbage collectors communities (Zabaleen) located within the Muqattam mountain area which is adjacent to Cairo's old historical quarters. According to official development strategy, the privatization of solid-waste services is regarded as fundamental to overall government plans for Old Cairo's rehabilitation. The objectives of the rehabilitation programme tend to favour tourist-orientated projects, whilst ignoring the local population's interests through the removal of informal Zabaleen settlements in Muqattam mountain, and through the clearing of the Eastern Cemetery of its tomb dwellers and shanty town buildings.The study examines the consequences of recent official intervention in the sustainability of the Muqattam Zabaleen settlement in terms of physical and demographic growth, infrastructural development, and changes in land tenure system. The paper takes into consideration early 1980s programmes funded by the World Bank to improve the Zabaleens’ environment and to upgrade their settlement. These aimed to maintain the existing informal settlement pattern and to develop urban service delivery systems.The empirical study adopts a qualitative analysis employing ethnographic techniques of informal discussions with secondary stakeholder agencies (local municipality, planners, NGOs activists). A field survey of the primary stakeholder group (garbage collectors) involved in-depth interviews with householders and with community leaders in the Zabaleen settlement. The analysis explores narratives expressed by members of the Zabaleen community in response to the threat of enforced eviction resulting from potential state-controlled gentrification programmes for urban development and land speculation in the area.The findings emphasize the significance of local participatory mechanisms in restructuring solid-waste collection and in developing the recycling industry whilst putting vacant and under-used areas into productive use. These mechanisms would support the management of built environment and local resources and would build local capacity through developing new channels for co-operation and partnership between the garbage collectors’ association (Gamm’yya) and grass roots organizations together with the local authorities and multi-national companies. In order to promote sustainable livelihoods and better opportunities for the urban poor the study concludes that there is a need to draw on the sustainable flow of local resources within low-income garbage collectors groups, whilst seeking new means of supporting land acquisition and its development for improved housing standards, basic services and environmental quality.