Environmental management scenarios: Ecological implications

The measure of whether a management scenario is capable of establishing regional-scale ecosystem sustainability is the degree to which it recovers the historical characteristics of the regional landscape mosaic. This study examines the ability of alternate management scenarios to recover the defining ecological features of the Everglades and South Florida landscape. Five conceptual scenarios are evaluated for recovering and sustaining the ecological characteristics of the wetland systems in South Florida. First, the regional-scale physical characteristics are identified that created and supported the major organizing and driving forces in the predrainage Everglades and Big Cypress basins. Eight hypotheses are proposed to explain how human-caused modifications to these defining characteristics have been responsible for the substantial level of ecological deterioration that has been documented in South Florida wetlands during the last century. The restoration scenarios are evaluated on their proposed ability to correct the physical and biological problems identified by the hypotheses. Our assessment of the five scenarios shows that all would improve the problems addressed by the eight hypotheses, as all could more effectively move increased volumes of water across broader expanses of contiguous wetlands than do existing management programs. This would result in longer hydroperiods over larger areas, reflecting historical patterns. Two of the scenarios would be successful in increasing flows into Florida Bay and the Gulf coast estuaries because removing internal structures increases the spatial extent of the upstream areas that could be devoted to natural hydropatterns.The benefits of eastern boundary buffer zones include improved flow into the Taylor Slough basin. Using Lake Okeechobee as a site for increased water storage, followed by the addition of eastern buffer zones and portions of the Everglades Agricultural Area, would produce increased flexibility in providing the storage capacity required to meet sustainability goals. Scenarios with maximum areas of buffer not only are more successful in reducing groundwater seepage losses to the east but also are more likely to reduce the level of nutrients and other contaminants entering the natural wetlands.     

Adaptive governance to promote ecosystem services in urban green spaces

Managing urban green space as part of an ongoing social-ecological transformation poses novel governance issues, particularly in post-industrial settings. Urban green spaces operate as small-scale nodes in larger networks of ecological reserves that provide and maintain key ecosystem services such as pollination, water retention and infiltration, and sustainable food production. In an urban mosaic, a myriad of social and ecological components factor into aggregating and managing land to maintain or increase the flow of ecosystem services associated with green spaces. Vacant lots (a form of urban green space) are being repurposed for multiple functions, such as habitat for biodiversity, including arthropods that provide pollination services to other green areas; to capture urban runoff that eases the burden on ageing wastewater systems and other civic infrastructure; and to reduce urban heat island effects. Because of the uncertainty and complexities of managing for ecosystem services in urban settings, we advocate for a governance approach that is adaptive and iterative in nature—adaptive governance—to address the ever changing social order underlying post-industrial cities and offer the rise of land banks as an example of governance innovation.     

Healthcare Use in the Heartland: How Health Care Selection Varies Between Rural,Retirement‐Age Migrants and Long‐Term Residents

One increasingly important problem affecting rural health care selection is the tendency of older residents to bypass local health care providers. This research investigates how the effects of community characteristics and attachment on health care bypass behavior vary between rural retirement‐age migrants and retirement‐age long‐term residents. Non‐health‐related behaviors, such as purchasing goods and services outside one's community during a health care trip, that is, “outshopping,” could influence bypass if individuals combine trips for their medical care with other consumer needs. Basing our work on the outshopping theory, we argue that bypass behavior is one facet of consumer consumption patterns for both rural retirement‐age migrants and long‐term residents. In addition, dissatisfaction with local health care and services like shopping can “push” rural residents to bypass local health care and travel greater distances for primary health care. We further contend that strong community attachment has an opposite “pull” effect that can help to negate the push of outshopping and reduce the likelihood of bypass. Our results reveal retirement‐age migrants are significantly more likely to bypass local primary health care providers than retirement‐age long‐term residents. Furthermore, our analysis bridges the rural health care and retirement community development literature to suggest that outshopping theory can now be applied to rural primary health care bypass behavior.     

Racial similarity in the relationship between poverty and homicide rates: Comparing retransformed coefficients

Criminologists have shown great interest in comparing the strength of the relationship between poverty and violent crime for whites and blacks. The present paper argues that the standard approach of comparing race-specific coefficients from logarithmic metric OLS and/or Poisson-based regressions has led to erroneous conclusions in this literature. Unlike researchers in other disciplines (especially economics), criminologists have largely ignored the need to “retransform” coefficients to their linear-effect representations before making comparisons between groups. The current study illustrates the importance of this methodological issue for the substantive question of whether poverty’s relationship to homicide is racially invariant (N = 134 cities). Similar to previous studies, initial results indicated that poverty’s effect on the natural logarithm of the homicide rate was dramatically stronger for whites than blacks (nearly 300% stronger for whites). However, after applying a broadly useful retransformation formula, poverty’s effect on the homicide rate actually appeared somewhat stronger for blacks. Further application of bootstrap simulations necessary to calculate the standard error of the difference in coefficients suggested that this racial discrepancy was not statistically significant.     

Cardiorespiratory fitness, obesity, and functional limitation in older adults

One hundred forty-six abdominally obese adults age 60-80 yr were studied to investigate the interaction between cardiorespiratory fitness (CRF) and obesity on functional limitation. Obesity was determined by fat mass (FM), CRF was determined by a maximal treadmill test, and functional limitation was based on 4 different tasks that are predictive of subsequent disability. Both FM (r = -.34, p ≤ .01) and CRF (r = .54, p ≤ .01) were independently associated with functional limitation in bivariate analysis.After further control for sex, age, and the interaction term (CRF × FM), FM was no longer independently associated with functional limitation (p = .10). Analyses were also based on sex-specific tertiles of FM and CRF. The referent group demonstrated significantly lower functional limitation than the low-CRF/low-FM and the low-CRF/high-FM groups (both p ≤ .05). These results highlight the value of recommending exercise for abdominally obese adults.     

Motivations for Involvement in Nonmetropolitan LGBTQ Organizations: A Multimethod Qualitative Exploration

Organizations serving lesbian, gay, bisexual, transgender, and queer (LGBTQ) communities provide services aimed at improving the health and well-being of LGBTQ people, yet may face limited resources and community support in nonmetropolitan communities. This study seeks to understand LGBTQ individuals’ motivations for becoming and staying involved in nonmetropolitan LGBTQ organizations. Data collection methods included interviews, participant observation, and focus groups. Six categories of motivations emerged: (1) to access support and resources; (2) to establish an LGBTQ community; (3) to be generative; (4) to affirm identity; (5) to support an LGBTQ organization; and (6) to combine one’s personal and professional lives.     

An exploratory study of multiple distinct gambling trajectories in emerging adults

This study uses data from a four-wave longitudinal survey of emerging adults (18–20 years of age in Wave 1) to examine whether there are multiple distinct trajectories of problem gambling risk severity and whether membership in these trajectory classes can be predicted by certain risk and protective factors. Four trajectory classes of gambling risk severity were identified – nonproblem-diminishing (73.9%), low-risk-stable (16.8%), marginal/nongambler-diminishing (7.1%), moderate-risk-increasing (2.2%) – with most youths' gambling involvement remaining stable or diminishing across the years and only the smallest most at-risk group showing a slight increase in severity across this transitional period. Three risk factors were significant predictors of class membership – being male, scoring higher on alcohol dependence, and escape-avoidance coping were all associated with increased probability of being in one of the more gambling involved trajectory classes, while lower alcohol dependence scores were associated with increased likelihood of being in the marginal/nongambling class.