PUBLIC SCHOOL SEGREGATION AND JUVENILE VIOLENT CRIME ARRESTS IN METROPOLITAN AREAS

Previous research has established an association between residential segregation and violent crime in urban America. Our study examines whether school‐based segregation is predictive of arrests of juveniles for violent crimes in U.S. metro areas. Using Census, Uniform Crime Report, and Common Core data for 204 metro areas, a measure of school‐based racial segregation, Theil's entropy index, is decomposed into two components: between‐ and within‐district segregation. Findings reveal evidence of a significant interaction term: Within‐district segregation is inversely associated with arrests for juvenile violence, but only in metropolitan areas with higher than average levels of between‐district segregation.     

Structural Determinants of Infant Mortality in Metropolitan and Nonmetropolitan America1

Abstract A conceptual model of the impact of structural advantage and disadvantage on infant mortality rates is developed and fitted to countylevel data. This model includes mediating endogenous constructs representing medical care availability, the incidence of teenage childbearing, and low birthweight rates and is estimated for three residence categories. Both direct and indirect effects of social structure and teenage childbearing on infant mortality vary significantly across the categories. Structural advantage exerts a significant and negative direct effect on infant mortality rates in urban areas, but in rural areas this effect is indirect, operating through teenage childbearing and low birthweight. Structural disadvantage significantly increases infant mortality in both rural and urban settings, but the effects operate directly in metropolitan areas and indirectly in rural areas. These results underscore the central role that social structure continues to play in determining infant mortality rates in the United States.     

Green remnants are hotspots for bat activity in a large Brazilian urban area

Urbanization tends to remove or isolate green areas into fragments or restrict them to narrow corridors inserted in a matrix of buildings. Nevertheless, urban green areas may act as refuges for fauna and bats are among the animals able to use such habitats. Using bioacoustics we investigated the influence of green areas on the activity of insectivorous bats in the metropolitan area of Recife, a conurbation of 4 million people in the Atlantic forest of Northeastern Brazil. Bat activity was statistically higher in green areas, based on calls (t?=?2.5298, p?=?0.0165), but not on feeding buzzes (t?=?1.8132, p?=?0.0817) or social calls (t?=??1.5551, p?=?0.1329). Several species were able to persist in an urban matrix and calls were classified into 16 sonotypes, belonging to five families (Emballonuridae, Molossidae, Noctilionidae, Phyllostomidae and Vespertilionidae). However, activity was significantly more associated with areas with vegetation, indicating that green remnants are hotspots for bat activity. Our results indicate that most insectivorous bats have a biased use of the urban landscape and the maintenance of urban green areas is essential to preserve them and the environmental services they provide.     

Social Isolation and Lethal Violence Across the Metro/Nonmetro Divide: The Effects of Socioeconomic Disadvantage and Poverty Concentration on Homicide*

Abstract This study extends the macro‐level criminological research tradition by examining the links between socioeconomic disadvantage, poverty concentration, and homicide in metropolitan and nonmetropolitan U.S. counties. Most research in this tradition has tested structural theories using urban areas as the unit of analysis. This “urban bias” has resulted in a limited understanding of the social forces driving violence in nonmetropolitan areas. To partially address this problem, we link the literature on the spatial and social organization of nonmetropolitan communities with the social isolation perspective from the urban poverty literature. We hypothesize that the spatial concentration of poverty drives up rates of homicide in both metropolitan and nonmetropolitan areas regardless of levels of socioeconomic disadvantage. Negative binomial regression for 1,746 nonmetropolitan and 778 metropolitan counties suggest that both socioeconomic disadvantage and poverty concentration elevate homicide in metropolitan areas. However, in nonmetropolitan counties only socioeconomic disadvantage has a significant impact. We conclude by discussing the implications of these differential findings for the social isolation perspective.     

Regional Patterns of Organizational Dominance: 1955–1975*

The ecological notion of metropolitan dominance is explored through the examination of a hierarchy of urban places. This hierarchy is based on organizational bases rather than functional characteristics as has been the case in most past research. This approach is preferable to the more traditional method in that organizational bases are more easily measured, and they offer an observable medium through which dominance is exercised. The hierarchy of metropolitan areas is perceived as comprising a social network, with influence accruing to a metropolis on the basis of its relationships with all other places in the system. The data are aggregated to the regional level in order to facilitate comparisons, and it is observed that power is becoming more diffuse spatially as it becomes more concentrated organizationally. Furthermore, the regional structure of the system of influence relations is being altered as the sunbelt metropolitan areas become more powerful. Other changes are found in the nature of the influence exercised by the growing urban areas of the southern and western regions. The data on organizational bases of dominance consist of corporate linkages reflecting the intraorganizational division of labor. The corporations themselves are drawn from the group of industrial corporations listed on the American Stock Exchange or the New York Stock Exchange in either 1955 or 1975.     

Immigrant Settlement Patterns: The Role of Metropolitan Characteristics*

Immigration continues to change the social, economic, and political landscapes of urban America. Consequently, scholars, as well as the general public, are interested in the internal migration patterns of immigrants. In this research, we identify and explain the characteristics of metropolitan areas that have the strongest effects on the percentage change in the foreign‐born population between 1990 and 2000. Using lagged independent variables and a sample of 150 metropolitan areas, we find that settlement patterns among immigrants are diverging from traditional patterns. That is, those metropolitan areas that had moderately high levels of globalization and lower costs of living as well as lower disadvantage indicators (e.g., percentage poverty) in 1990, had larger increases in percentage foreign‐born between 1990 and 2000 compared to areas with lower levels of globalization and higher costs of living and disadvantage. These trends suggest the increasing importance of second‐tier metropolises such as Atlanta, Phoenix, and Las Vegas in understanding where immigrants settle.     

The structural correlates of metropolitan migration: 1970-1975

This study is concerned with the debate over the supremacy of organizational versus environmental models for explaining population change within the context of metropolitan-nonmetropolitan turnaround migration. A sample of U.S. metropolitan areas is classified by a migration typology that considers sign changes or consistencies in rates of net migration between the 1960s and 1970s. "Four categories result and organizational, environmental and technological data are analyzed utilizing ridge regression with interaction terms to ascertain whether structural differences among migration categories exist." The study shows that organizational factors are more relevant for urban areas experiencing in-migration, and environmental factors are more relevant for those experiencing out-migration.     

Agricultural chemical use and cancer mortality in selected rural counties in the U.S.A.

The relationship between agricultural chemical use and five major , categories of cancer is examined for a sample of rural U.S. counties. County acreages treated with insecticides, herbicides and fertilizers are the variables of primary analytic interest. Findings suggest that agricultural chemical use is related to county cancer mortality. For three of the five categories of cancer included, agricultural chemical use was the best predictor of cancer mortality. Although limitations common to ecological analyses require caution in interpreting results, the findings are highly suggestive of the need for additional research on possible links between agricultural chemical use and county cancer mortality.     

Moving Up in Rural America: Economic Attainment of Nonmetro Latino Immigrants

Rapid Hispanic population growth represents a pronounced demographic transformation in many nonmetropolitan counties, particularly since 1990. Its considerable public policy implications stem largely from high proportions of new foreign‐born residents. Despite the pressing need for information on new immigrants in nonmetro counties and a bourgeoning scholarship on new rural destinations, few quantitative analyses have measured systematically the social and economic well‐being of Latino immigrants. This study analyzes the importance of place for economic well‐being, an important public policy issue related to rural Hispanic population growth. We consider four measures of economic mobility: full‐time, year‐round employment; home ownership; poverty status; and income exceeding the median national income. We conduct this analysis for 2000 and 2006–2007 to capture two salient periods of nonmetro Hispanic population growth, using a typology that distinguishes among nonmetropolitan areas by the categories of “traditional” immigrant destinations concentrated in the Southwest and Northwest, “new” immigrant destinations to capture recent and rapid Hispanic population growth in the Midwest and Southeast, and “all other” rural destinations as a reference category representing more typical nonmetro population trends. We also compare our results to those for metropolitan destinations. We find that place type matters little for stable employment but more so for wealth accumulation and income security and mobility. Compared with urban Latino immigrants, rural Latino immigrants exhibit higher rates of homeownership as well as greater likelihoods of falling into poverty and lower likelihoods of earning a measure of U.S. median income. From 2000 to 2006–2007, rural‐urban differences deteriorated slightly in favor of urban areas. We conclude by discussing implications of these findings and those of addressing rural immigrant economic well‐being more generally.     

Differential Recovery Migration across the Rural–Urban Gradient: Minimal and Short-Term Population Gains for Rural Disaster-Affected Gulf Coast Counties

Places affected or threatened by extreme environmental disturbances confront a number of significant issues, including whether their populations will stay the same or change through migration. Research on Hurricanes Katrina and Rita shows some displaced residents returned to their disaster-affected communities once the built environment was restored, new migrants settled in affected places as part of the rebuilding effort, and the regional migration system grew more urbanized and spatially concentrated during post-disaster years. Research also shows that not all disaster-affected places recovered their populations. Our study examines whether differential recovery is systematically patterned along the rural–urban gradient. Using U.S. Census Bureau estimates and IRS county-to-county migration data, we investigate whether the 2005 hurricane season differentially exacerbated or altered previous migration trends across a rural–urban gradient that incorporates proximity to metropolitan areas and disaster-related housing loss. We find a rural–urban differential in Gulf Coast recovery migration: The disaster boosted migration among non-metropolitan counties, yet these increases were smaller and short-lived compared to the patterns found for metropolitan counties, most especially high loss metropolitan counties. Our findings encourage theories of environmental migration to incorporate spatial differentiation and scenarios of environmental changes to account for differential impacts on settlement patterns across the rural–urban continuum.     

Spatial Variations in Church Burnings: The Social Ecology of Victimized Communities in the South*

Abstract In recent years, church burnings in the South have attracted a great deal of attention. Many commentators have charged that they are a product of strained race relations throughout the South, and particularly of severe racial tensions in Southern rural areas. In this study we evaluate these claims. We begin by mapping the spatial coordinates of recorded church burnings from 1990 to 1997, and find that church arsons indeed are concentrated in the South. Church burnings, however, are a more urban phenomenon than popular media accounts would suggest. Our analysis then explores the influence of contextual factors (population and locale, racial composition and inequality, so‐cioeconomic conditions, local religious ecology, and patterns of reported crime) on church burnings in counties located in the study region. Logistic regression models confirm that church arsons are most likely to occur in small metropolitan statistical areas (MSAs) and non‐MSA counties containing a city of at least 10,000 residents. Church burnings also are especially likely in counties with a higher percentage of black residents, a larger number of churches relative to the rest of the state, and a higher arson rate. We conclude by discussing the implications of these findings for future research and public policy.     

Research Orientations and Sources of Influence: Agricultural Scientists in the U.S. Land‐Grant System*

Abstract This research builds on the work of Busch and Lacy, who have written extensively about the sources of influence on the choice of research problems in the agricultural sciences at land‐grant universities. Employing data from a 1995–1996 nationwide survey of land‐grant agricultural scientists, I use multiple regression techniques to investigate the relative importance of 19 sources of influence on agricultural scientists engaged in six research areas: productionist‐oriented, sustainable agriculture, environmental, basic, consumer‐oriented, and rural community‐oriented. The first objective of this paper is to revisit and assess many of Busch and Lacy's findings about the influences on land‐grant agricultural scientists. I find that different types of land‐grant research are influenced by distinct combinations of factors. The second major objective is to extend Busch and Lacy's work by spotlighting the significant influences on sustainable agriculture research. My multivariate findings show that this research appears to exhibit influences that reflect its dual productionist and environmental character.     

The Extended Metropolitan Area in a New EU Member State: Implications for a Rural Development Approach

I examine the role of rural development strategies in a new member state (Romania) of the European Union and, in particular, analyse the case of the metropolitan area of the Bucharest-Ilfov region. The analysis concerns the selected strategies for rural development in the programming period 2007–2013. It must be noted that Romania is divided into nonadministrative development regions and that the process of land privatisation is not yet concluded. These factors could have a negative influence on the implementation of the interventions. The analysed region is situated in the Southern part of the country and in the central part of the Romanian Plan. The total surface is about 1.8 square kilometres, of which 12.5% are occupied by the town of Bucharest and 87.5% by Ilfov County; however, approximately 88% of the population is concentrated in the urban center and only 12% in Ilfov County. The case study is characterised on the one hand by a high growth rate of the gross domestic product, a relatively low unemployment rate, and increasing consumer good sales (mainly food and beverages); on the other, by some marked disparities in macroeconomic indicators among regions and between rural and urban areas and an enormous lack of infrastructures. The case study thus calls for a local approach in order to identify the strategies required to improve the quality of life of the regional inhabitants (both in rural and urban areas) and to prevent pressure from the urban centre from compromising the rich rural heritage      

Three categories of urban green areas and the effect of their different management on the communities of ants,spiders and harvestmen

Urban green areas have become an important tool for biodiversity conservation in cities. However, land use and the different management practices applied to these areas determine their effectiveness as biodiversity refuges within cities. In our study, we compare the biodiversity of three bioindicator groups of arthropods (ants, spiders and harvestmen) found in eleven urban green sites in Warsaw (Poland). The studied sites represent three categories of management: botanical gardens, public parks and urban woodlands. Our aim was to determine the effect of the type of management (as urban green categories) on arthropod communities in urban areas.

     

A comparative gradient approach as a tool for understanding and managing urban ecosystems

To meet the grand challenges of the urban century??such as climate change, biodiversity loss, and persistent poverty??urban and ecological theory must contribute to integrated frameworks that treat social and ecological dynamics as interdependent. A socio-ecological framework that encapsulates theory from the social and ecological sciences will improve understanding of metropolitan dynamics and generate science for improved, sustainable management of urban ecosystems. To date, most urban ecological research has focused on single cities. A comparative approach that uses gradients within and between cities is a useful tool for building urban ecological theory. We offer five hypotheses that are testable using a comparative, gradient approach: (i) the current size, configuration, and function of larger metropolitan ecosystems predicts the potential trajectory of smaller urban areas; (ii) timing of growth explains the greatest variance in urban ecosystem structure and function; (iii) form and function of urban ecosystems are converging over time; (iv) urban ecosystems become more segregated and fragmented as populations increase; and (v) larger cities are more innovative than smaller cities in managing urban ecosystems.     

Securing Aquaculture‐Related Resources through Social Interaction in the Pampanga River Delta,Philippines: An Ethnogeographic Perspective on the Strengths and Pitfalls of Social Capital

Social relationships play a pivotal role in agricultural systems because they influence the economic behavior of stakeholders, but sociological studies aimed at understanding these links have until now not focused much on aquaculture. Here we examine how social capital among communities of the Pampanga River delta in the Philippines plays out in the conduct of aquatic livestock breeding, harvesting, and trading, and how it either facilitates or restrains the transformation of individual livelihoods. Relying on a mixed method of field surveys, participant observation, and questionnaires, we construct an ethnographic portrayal of how the main categories of stakeholder involved in aquaculture (from livestock producers to traders via landless gleaners) elaborate strategies to access or control aquaculture‐related resources. We show that the bonding and bridging efforts to construct social capital are strongly embedded in the cultural matrix, and that they are limited by environmental constraints (ecosystem carrying capacity, exposure to natural hazards) and shaped by historical legacies. The resulting pattern of social interactions is overall successful at buffering the negative impact of external forcing factors such as environmental hazards and global market crashes, but we also show how the different outcomes of social exchange are nonetheless unevenly distributed across the spectrum of stakeholders.     

Bird species assemblages across a rural urban gradient around Kolkata,India

Urban development leads to changes in habitat structure and resource base. Bird communities are known to respond sharply to such changes. Our result from study of bird community along urbanization gradient around Kolkata metropolitan city clearly separated the urban bird community from the rural and rural 3 habitats in terms of species diversity and foraging groups. Rural and rural 3 sites had more number of rare species and higher percentage of unique species as compared to the urban habitats. Functional group analysis showed higher abundance of granivores in urban habitats and absence of insectivore and carnivorous species that were found in the rural and rural 3 habitats. The bird species assemblage along the gradient was significantly nested where bird species recorded in urban areas were subset of the species rich rural areas. There was no difference in individual counts between urban and rural habitats, therefore nullifying the hypothesis that rural areas are more species rich because of higher population size. Bird community in the urban areas was less even as compared to the rural areas due to the dominance of omnivorous guild. Bird diversity was negatively correlated to the density of house lots.     

Expressive Vocabulary in Language Learners From Two Ecological Settings in Three Language Communities

This study compared multiple characteristics of girls' and boys' vocabulary in 6 different linguistic communities—1 urban and 1 rural setting in each of 3 countries. Two hundred fifty‐two mothers in Argentina, Italy, and the United States completed vocabulary checklists for their 20‐month‐old children. Individual variability was substantial within each linguistic community. Minimal cross‐linguistic differences were found in children's vocabulary size; however, differences among languages in the composition of children's vocabularies appeared possibly related to cultural valuing of different categories of words. Ecological setting differences within cultures appeared in children's vocabulary size, even when the composition of children's vocabularies was examined: Children living in urban areas were reported by their mothers to say significantly more words than children living in rural areas, particularly for Argentine and U.S. children. Girls had consistently larger vocabularies than boys. These findings are discussed in terms of contextual and child factors that together influence first language learning.     

Changing Boundaries: Sorting Space,Class, Ethnicity and Race in Ontario*

This essay examines the components of space, class, ethnicity and race. The focus is on the Ontario urban system, including Toronto, Ottawa‐Hull, Hamilton and London. The emphasis is on how social class, ethnicity and race influence spatial residential differentiation. Toronto appears as a “Visible Minority” type. London follows an early British/Loyalist type, Hamilton an industrial blue‐collar type, and Thunder Bay a northwestern fringe. Urban areas in Ontario seem to serve a variety of functions, in line with Innis's conception of a core, semi‐core and fringe. Toronto acts as a magnet for immigrants. London is located in the agricultural base, Hamilton is a supplier of industrial jobs, and Thunder Bay provides staples supporting northern populations. Moreover, ethnicity and race are crucial indicators of boundaries, which must be accounted for in understanding urban communities.     

The vital package living on the streets in global cities: São Paulo,Los Angeles and Tokyo

The main objective of this article is to acknowledge and examine the material culture of the homeless in the urban context of downtown areas in Sao Paulo, Los Angeles and Tokyo. Firstly, I introduce some aspects of the complex process of vital package production, which concerns the social function of design and the role of products in our late industrial society. In exploring this process of homeless material culture, I then describe the reverse sense of some of the products and materials re‐functionalized by the homeless. Then, in a brief analysis of design, wasteful culture, products, life cycle and obsolescence, I claim that homelessness and design are linked to the public spaces of metropolitan areas and global cities, as a consequence of the social‐spatial exclusionary processes due to spatio‐economic conflicts that constitute contemporary urban restructuring.