Urbanization and Land‐Use Change: A Human Ecology of Deforestation Across the United States, 2001–2006

Drawing from human ecology, the present study sheds light on the ways in which urbanization drives changes in forest cover at the local level across the continental United States. Using county‐level data from the National Land Cover Database and other US governmental sources, the area of forest cover lost in the construction of the built environment between 2001 and 2006 is regressed on the size, density, and social organization of a locality. Controlling for several other factors, estimates from spatial regression models with two‐way fixed effects show that increasing density slowed down deforestation, while variables representing size and social organization had the opposite effect. Based on these results, urbanization is framed as a multidimensional human ecological process with countervailing impacts on the natural environment.     

A Demographic Deficit? Local Population Aging and Access to Services in Rural America, 1990–2010

Population aging is being experienced by many rural communities in the United States, as evidenced by increases in the median age and the high incidence of natural population decrease. The implications of these changes in population structure for the daily lives of the residents in such communities have received little attention. We address this issue in this study by examining the relationship between population aging and the availability of service‐providing establishments in the rural United States between 1990 and 2010. Using data mainly from the U.S. Census Bureau and the Bureau of Labor Statistics, we estimate a series of fixed‐effects regression models to identify the relationship between median age and establishment counts net of changes in overall population and other factors. We find a significant but nonlinear relationship between county median age and the total number of service‐providing establishments, and counts of most specific types of services. We find a positive effect of total population size across all of our models. This total population effect is consistent with that found in other research, but the independent effect of age structure that we observe represents a novel finding and suggests that age structure is a salient factor in local rural development and community well‐being.     

Rural ageing in the United States: Trends and contexts

This paper examines rural population ageing in the United States with a particular focus on the contrasting contexts in which older rural residents live. We compare the characteristics of the older population by rural versus urban residence, and explore challenges and opportunities associated with the ageing of rural baby boomers. The United States is a vast territory, and rural areas in the US are diverse regionally, in poverty and income, principal forms of employment, proximity to metropolitan areas, population size, density and composition, the history of change in these parameters, and a number of other factors that affect the ageing process. Hence, the diversity across rural areas is an important consideration in what affects the well being of rural elderly individuals, as well as the community-level impacts of rural ageing. Further, the characteristics of the older rural population help shape community and rural development outcomes for diverse rural communities. We use data from various US Census Bureau sources, and cite other studies to provide a demographic overview of ageing in the rural United States, and to analyze how this situation differs in varying socio-demographic and regional contexts. In the concluding section, we focus on policy implications associated with rural ageing.     

The Impact of the Rural Population Component on Homicide Rates in the United States: A County-Level Analysis

Abstract Using 3,130 U.S. counties or county equivalents, this paper provides a test of the impact of rural population on the violent crime of homicide, while controlling for the effects of other correlates. The results indicate that the traditional bond of group cohesion assumed to be associated with the rural environment and its residents continues to have an inhibiting effect on homicide for counties in the United States.     

A comparison of soil organic carbon stocks between residential turf grass and native soil

A central principle in urban ecological theory implies that in urbanized landscapes anthropogenic drivers will dominate natural drivers in the control of soil organic carbon storage (SOC). To assess the effect of urban land-use change on the storage of SOC, we compared SOC stocks of turf grass and native cover types of two metropolitan areas (Baltimore, MD, and Denver, CO) representing climatologically distinct regions in the United States. We hypothesized that introducing turf grass and management will lead to higher SOC densities in the arid Denver area and lower densities in the mesic Baltimore area relative to native cover types. Moreover, differences between turf grass soils will be less than differences between the native soils of each metropolitan region. Within Baltimore, turf grass had almost a 2-fold higher SOC density at 0- to 1-m and 0- to 20-cm depths than in rural forest soils, whereas there were no differences with soils of urban forest remnants. Moreover, urban forest remnants had more than 70% higher SOC densities than rural forest soils. Within Denver, turf grass (>25 years of age) had more than 2-fold higher SOC densities than in shortgrass steppe soils, while having similar densities to Baltimore turf grass soils. By contrast, the native soils of Baltimore were almost 2-fold higher than the native steppe grass soils of Denver using SOC densities of remnant forests as representative of native soils in the Baltimore region. These results supported our hypothesis that turf grass systems will be similar in SOC densities across regional variations in climate, parent material, and topography. These similarities are apparently due to greater management efforts in the Denver region to offset the constraint of climate, i.e., anthropogenic factors (management supplements) overwhelmed native environmental factors that control SOC storage.     

Understanding Local Environmental Concern: The Importance of Place

Urban‐rural differences in environmental concern are the primary way that place has been conceptualized within the social bases of environmental concern framework, yet there has been little convergence in empirical findings to support such differences. We assess the influence of place of permanent residence and other sociodemographic measures of the social bases of environmental concern approach alongside two social‐psychological constructs: place attachment and place outlook. Our work focuses on second homeowners in three rural, natural amenity communities of the northeastern United States (n = 405). Second homeowners who permanently reside in rural places exhibited lower levels of local environmental concern about their second home area than suburban and urban residents, when “rural” was defined at the county scale. We did not observe differences in local environmental concern based upon urban‐suburban‐rural permanent residence when place of permanent residence was defined at the tract, block group, or zip code levels. Place attachment and place outlook explain more variance in local environmental concern than all sociodemographic indicators combined. Our findings suggest that second homeowners' local environmental concern is not strongly or consistently shaped by the urbanity or rurality of their permanent residence, but that place‐based, social‐psychological constructs may offer mechanisms through which social‐structural forces shape environmental concern.     

Effects of habitat fragment size and isolation on the density and genetics of urban red-backed salamanders (Plethodon cinereus)

Urban expansion is creating environmental stressors through land use change, habitat fragmentation, and habitat loss. These stressors, along with a host of others, are driving precipitous declines in vertebrate taxa around the world. Amphibians, often requiring a narrow range of environmental conditions, can be especially susceptible to the stressors of environmental change. Despite habitat loss and degradation, some amphibian species continue to persist in altered urban landscapes. The red-backed salamander (Plethodon cinereus) is one such- species and in this study, we assess how habitat patch size affects population density and genetic diversity of salamander populations in and around an urban center in Ohio, United States. Further, we examined patterns of genetic differentiation and landscape connectivity to understand gene flow between populations and tested for historic demographic bottleneck effects. Populations were sampled from 9 urban forest patches ranging in size from less than 1 ha to approximately 250 ha. There was no apparent effect of contiguous habitat patch size on salamander density nor genetic diversity, but we did observe significant genetic differentiation between 97% of pairwise population comparisons. The differentiation observed was not a result of overland distance or effective distance due to landscape resistance. There was evidence of historic bottlenecks at every site. These results suggest that density is driven by within-patch heterogeneity and that genetic diversity is affected by drivers other than patch size or contemporary population density. Our study demonstrates that red-backed salamanders can persist in wooded, urban parks, but that genetic diversity remains susceptible to demographic changes.

     

Small mammal assemblages in fragmented shrublands of urban areas of Central Chile

Mediterranean-type ecosystems are one of the most affected environments by habitat loss and fragmentation due to urban development, however only few studies have evaluated the effects of urbanization on the biodiversity of remnant fragments in these ecosystems. This study aims to evaluate the effects of urban development over small mammal assemblages inhabiting isolated forest fragments of an urban area of Chilean Mediterranean zone. We compared abundance and richness of small mammal assemblages of six remnant fragments within an urban matrix, and six fragments similar in area and habitat characteristics with those of urban area, but surrounded by a rural matrix. We found that small mammal assemblages differ considerably among fragments types (urban vs rural), with lack of endemic species from urban fragments and with high proportion of introduced rodents in urban fragments. Furthermore abundance of small mammals was higher in rural than in urban fragments. In urban areas small mammal abundance and richness were not correlated with any of the explanatory variables assessed (woody cover, flora heterogeneity, fragment area, perimeter/area ratio). However in rural fragments small mammal richness was negatively correlated with flora heterogeneity and the abundance of small mammals was positively correlated with perimeter/area ratio. These results reveal important differences within the effects of fragmentation over small mammal assemblages among the two types of fragments assessed. Our findings suggest that in forest fragments isolated by urbanization, larger areas with good quality habitats are not sufficient to maintain native small mammal population.     

The Role of Community Assessments,Place, and the Great Recession in the Migration Intentions of Rural Americans

Many rural areas of the United States are experiencing population decline due to out‐migration. However, others—especially those places rich in natural amenities and recreational opportunities—are attracting new residents and losing less of their native population. In this article we investigate the predictors of rural Americans' migration intentions by examining how individual‐level community assessments, including community attachment and perceptions of community‐level problems, shape rural Americans' migration decision making while controlling for individual and place effects. Drawing on survey data from 17,000 residents in 11 different rural areas around the United States, we find that community attachment is a key predictor of rural migration, even during periods of economic recession, and regardless of individual and place characteristics or perceptions of community‐level problems. We also find that multiple dimensions of community attachment (e.g., practical, natural, family, community trust) have independent effects on the propensity of rural residents to migrate. Our research contributes to knowledge on migration trends among rural Americans by exploring the complicated reasoning behind why people stay in, or move to, certain rural communities and not others.     

Social Capital and Human Mortality: Explaining the Rural Paradox with County‐Level Mortality Data

The “rural paradox” refers to standardized mortality rates in rural areas that are unexpectedly low in view of well‐known economic and infrastructural disadvantages there. We explore this paradox by incorporating social capital, a promising explanatory factor that has seldom been incorporated into residential mortality research. We do so while being attentive to spatial dependence, a statistical problem often ignored in mortality research. Analyzing data for counties in the contiguous United States, we find that: (1) the rural paradox is confirmed with both metro‐nonmetro and rural‐urban continuum codes, (2) social capital significantly reduces the impacts of residence on mortality after controlling for race and ethnicity and socioeconomic covariates, (3) this attenuation is greater when a spatial perspective is imposed on the analysis, (4) social capital is negatively associated with mortality at the county level, and (5) spatial dependence is strongly in evidence. A spatial approach is necessary in county‐level analyses such as ours to yield unbiased estimates and optimal model fit.     

Rural Environmental Concern: Effects of Position,Partisanship, and Place

The social bases of environmental concern in rural America resemble those for the nation as a whole, but also reflect the influence of place. Some general place characteristics, such as rates of population growth or resource‐industry employment, predict responses across a number of environmental issues. Other unique or distinctive aspects of local society and environment matter as well. We extend earlier work on both kinds of place effects, first by analyzing survey data from northeast Oregon. Results emphasize that “environmental concern” has several dimensions. Second, we contextualize the Oregon results using surveys from other regions. Analysis of an integrated dataset (up to 12,000 interviews in 38 U.S. counties) shows effects from respondent characteristics and political views, and from county rates of population growth and resource‐based employment. There also are significant place‐to‐place variations that are not explained by variables in the models. To understand some of these we return to the local scale. In northeast Oregon, residents describe how perceptions of fire danger from unmanaged forest lands shape their response to the word conservation. Their local interpretation contrasts with more general and urban connotations of this term, underlining the importance of place for understanding rural environmental concern.     

Urban growth patterns and growth management boundaries in the Central Puget Sound, Washington, 1986–2007

Many regions of the globe are experiencing rapid urban growth, the location and intensity of which can have negative effects on ecological and social systems. In some locales, planners and policy makers have used urban growth boundaries to direct the location and intensity of development; however the empirical evidence for the efficacy of such policies is mixed. Monitoring the location of urban growth is an essential first step in understanding how the system has changed over time. In addition, if regulations purporting to direct urban growth to specific locales are present, it is important to evaluate if the desired pattern (or change in pattern) has been observed. In this paper, we document land cover and change across six dates (1986, 1991, 1995, 1999, 2002, and 2007) for six counties in the Central Puget Sound, Washington State, USA. We explore patterns of change by three different spatial partitions (the region, each county, 2000 U.S. Census Tracks), and with respect to urban growth boundaries implemented in the late 1990’s as part of the state’s Growth Management Act. Urban land cover increased from 8 to 19% of the study area between 1986 and 2007, while lowland deciduous and mixed forests decreased from 21 to 13% and grass and agriculture decreased from 11 to 8%. Land in urban classes outside of the urban growth boundaries increased more rapidly (by area and percentage of new urban land cover) than land within the urban growth boundaries, suggesting that the intended effect of the Growth Management Act to direct growth to within the urban growth boundaries may not have been accomplished by 2007. Urban sprawl, as estimated by the area of land per capita, increased overall within the region, with the more rural counties within commuting distance to cities having the highest rate of increase observed. Land cover data is increasingly available and can be used to rapidly evaluate urban development patterns over large areas. Such data are important inputs for policy makers, urban planners, and modelers alike to manage and plan for future population, land use, and land cover changes.     

‘Counterurbanization’, interaction and functional change in a rural amenity area — A Canadian example

Recent explanations of population and economic change in rural communities in Canada, the United States, the British Isles and Australia are described and assessed. These are synthesized and evaluated in the south Georgian Bay area at the outer edge of Toronto's urban field. Custom census tabulations of data on migration, commuting and population change from 1971 to 1991 documented rapid population growth, a major increase in the elderly, significant migration from metropolitan centres and primarily local work-residence linkages in the study area. Much of the population increase occurred in residential nucleations with amenity attractions along the shoreline. Information from business directories was used to trace economic change. Many businesses formerly found in small rural service centres have centralized in larger communities, but new economic activities related to tourism, construction, finance, services, manufacturing and wholesaling replaced them in numerous settlements. Population continued to increase in places that had lost some or all of their businesses. Population growth and economic change may be attributed to local amenity attractions, location in an urban field, the ‘commodification of rurality’ and structural transformations in the economy. Deconcentration from the ‘Golden Horseshoe’ contributed substantially to population growth in the study area which appeared to be a ‘clean break’ from the Toronto area.     

A comparison of Mediterranean Gecko (Hemidactylus turcicus) populations in two temperate zone urban habitats

Urban ecosystems represent unique habitats that might be more or less suitable than natural systems for many species. The Mediterranean Gecko, Hemidactylus turcicus is a synanthropic species that has successfully colonized many urban and suburban areas outside its natural range. In the United States, H. turcicus has been found predominantly in southern states on exterior surfaces of buildings. We compared population density, demographics, and extent of dispersal of populations of H. turcicus at two anthropogenic sites in a temperate region of the United States. The University of Central Oklahoma (UCO) had higher building density and greater cover by anthropogenic surfaces and the Oklahoma City Zoo (ZOO) had lower building density and greater cover by vegetation. Mark and recapture sampling was conducted at UCO from 2006 to 2007 and during 2008 at ZOO. The sizes of the populations at the two sites were estimated using the Schnabel method and population densities were calculated using those estimates. Age class of captured animals, sex of adults, and gravid status of adult females were determined at both sites. We assumed that greater exterior wall surface area of individual buildings at UCO and greater land cover by anthropogenic surfaces might 1) reduce population density and 2) facilitate dispersal there relative to the ZOO. Population sizes and density in animals per ha of land and building cover and demographics were similar at the two sites. Population density per ha of building exterior wall area was higher at ZOO than at UCO. The higher density of animals on buildings, lower proportion of subadults in the population and lower maximum dispersal distance at ZOO suggest that successful diffusion dispersal might be limited at that site relative to UCO.     

The Effects of Capital Campaigns on Other Nonprofits’ Fundraising

This study focuses on the effects of capital campaigns on the fundraising performance of other nonprofits within the same geographic region. Drawing from research in organizational ecology and charitable giving, we offer a theory of capital campaign impact that says any impact of a campaign must be looked for in a carefully circumscribed area or population of organizations, and that campaigns raise awareness of the need for services within a particular area. We use data on capital campaigns at arts nonprofit organizations in forty‐eight counties across the United States between 1999 and 2007, coupled with financial data on nonprofits in the arts in the same county to test our hypotheses. The results from our analyses show that a major capital campaign positively affects other nonprofits’ fundraising, and the effect varies depending on the phase of the capital campaign. We discuss possible mechanisms that drive the positive effects of capital campaigns, and conclude with a short illustration.     

Metropolitan Proximity and U.S. Agricultural Productivity, 1978–1997*

Abstract Metropolitan encroachment into surrounding countrysides has had noticeable consequences on American agriculture. This research examines gross farm sales in five categories of crops and five categories of livestock and poultry by county proximity to metropolitan areas. A seven‐category classification of counties was derived from the 1983 and 1993 Economic Research Service/Beale rural‐urban codes and used in the analysis. Our findings showed a significant metropolitan influence on agricultural sales of crop and livestock commodities, particularly those commodities that can be intensively produced on few numbers of acres. Some of this influence is attributed to the rapid growth of the urban areas during the past quarter century. Our results challenge widely‐held traditional perceptions about the spatial organization of agricultural production in the United States.     

“People Will Bury Their Guns before They Surrender Them”: Implementing Domestic Violence Gun Control in Rural,Appalachian versus Urban Communities

Though gun violence is a global issue, the risk of firearm death is substantially higher in the United States than in other high‐income nations. Guns are deeply rooted within American culture; however, different subcultures exist along the urban‐rural divide. Such differences between urban and rural communities related to gun culture have been dubbed “firearm localism.” We investigated firearm localism in a state that has the highest proportion of firearm‐related domestic violence homicide and a large rural area representing a subgroup of rural culture: Appalachia. Specifically, key professionals reported issues related to domestic violence gun control in their communities. We conducted phone and in‐person surveys with a sample of community professionals (N = 133) working in victim services and the justice system in urban and Appalachian communities. Despite evidence of a strong gun culture in the rural communities, both urban and rural professionals estimated that about two‐thirds of their community would support restricting abusers' firearm access. Additionally, rural professionals were more likely to show concern for abusers' Second Amendment rights when discussing unintended negative consequences of gun confiscation; urban professionals were more likely to point out that gun confiscation can provide a false sense of security for victims. Policy implications are discussed.     

Foreclosure,Inequality, and the Difference That Place Makes

While the Great Recession and the associated rise in foreclosures significantly impacted households across the United States, default rates in rural areas and rural‐urban foreclosure differences have failed to attract substantial research attention. To expand the scale and scope of the foreclosure literature, this article examines place‐based differences in estimated foreclosure rates across U.S. counties, which are classified as urban, suburban, micropolitan, or rural. Defaults are considered both overall and for each county classification, and are related to income distribution and inequality, homeownership, adjudication of default, place‐based factors including amenity scores and proximity to urban areas, and geographic region. The article finds a complex relationship among these variables, with inequality itself negatively associated with default rates and lower‐middle?income households positively related to foreclosure. Further, while proximity to urban areas is positively related to foreclosure rates among nonurban counties, natural amenities are related to lower default rates in these areas. The article concludes by considering policy implications, and recommends expanding foreclosure mitigation and prevention strategies to nonurban places.     

A comparison of carbon and nitrogen stocks among land uses/covers in coastal Florida

Coastal areas are rapidly developing due to population growth and the appeal of coastlines. In order to gain insight into how land use/cover affects carbon (C) storage in a coastal context, we examined soil and vegetation C and soil nitrogen (N) across land uses near Apalachicola, FL. Forested wetlands had the greatest soil C and N storage, while natural pine forests and pine plantations had the least. In paired plots, urban lawns had significantly greater mineral soil N content compared to urban forest remnants. Total ecosystem C (soil + vegetation) was higher in forested wetlands than all other land uses/covers combined due to the high organic content of those wetland soils. Urban forest remnants and lawns had greater total ecosystem C than natural pine forests and pine plantations, which likely reflects the differential influence of prescribed fire and less frequent anthropogenic disturbances between the rural and urban areas, respectively. Projections of land use change in Franklin County, FL combined with these data suggest that increases in C storage are possible with continued urbanization along the Gulf Coast, if forest remnants are left and lawns are incorporated in built-up areas. However, this study does not account for C emissions during land conversion, or any emissions associated with maintaining urban built-up and residential areas. A better understanding of land use/cover influences on C pools has applications for planning and development, as well as ecological and environmental protection in the region.     

Predicting Children's Asthma Hospitalizations: Rural and Urban Differences in Texas*

Abstract Asthma is the number one chronic health condition facing children today; however, little is known about rural‐urban inequalities in asthma. This “area effects on health” study examines rural‐urban differences in childhood asthma hospitalizations within the state of Texas using negative binomial regression models. Effects associated with residence on the Texas‐Mexico border, where the majority of rural Texas children live, are also considered. Neighborhood‐level social class and proportion of the population that was native‐born Hispanic were significant predictors of asthma hospitalizations, independent of rural‐urban location. Conversely, proportion African American, Native American, and foreign‐born Hispanic, not a citizen; median year of home construction; and neighborhood location on the Texas‐Mexico border were conditional on urban‐rural location, and the strength of these predictors was stronger in rural areas. This suggests that locational and social factors intersect in marginalized spaces (like the rural and border regions of Texas) to create vulnerability to asthma hospitalizations.