The effects of urbanization on body size of larval stream salamanders

Animal body sizes in urban areas often differ from nearby rural areas, which may impact population fitness and dynamics. We examined the effects of urbanization on larval body sizes of two species of salamanders, the two-lined salamander (Eurycea cirrigera) and the northern dusky salamander (Desmognathus fuscus). Specifically, we utilized a before-after control-impact (BACI) study design which allowed for the assessment of differences in larval body size between multiple control and impacted sites over a 5 year period. We found a decrease in larval body size in both species at the impacted sites compared to control sites in the first year after urbanization, followed by generally larger body sizes in urban sites compared to control sites in years 3–5, and significantly so in year 4. Using generalized linear models, we found support that larger body sizes post impact in urbanized streams may be due to warmer stream water temperature and decreased abundance of larvae. Both E. cirrigera and D. fuscus are well known for their ability to persist in urbanized streams; our data suggest that despite overall lower abundances in urban streams, persistence may be due to increases in larval body size and, potentially, post-metamorphic benefits.     

Human–environment interactions in South Florida's Everglades region: Systems of ecological degradation and restoration

This chapter examines the societal drivers of environmental change in South Florida's Everglades region during the past 150 years. This historical geography is developed through the use of a conceptual framework constructed to facilitate the analysis of human–environment interactions and nature–society systems of ecological degradation and restoration at the regional scale. The framework is composed of four basic interlinked components: interaction mechanisms (e.g., land use, direct resource utilization, pollution and external inputs, resource competition), feedback mechanisms (e.g., basic needs, quality of life, environmental ethics), control systems (e.g., governmental regimes, legal institutions, resource management), and the societal context (e.g., population and demographic patterns, social structure and organization, technology, economic conditions, societal values). A primary objective of this chapter is to determine the presence and importance of each of these components during the process of environmental change over the period of study—1845 to 1995.Data for the analysis are drawn from primary and secondary sources on the environmental, social, economic, and political history of South Florida. The results indicate that although elements of each component were present throughout the entire period, different elements of each component play more significant roles at differing moments. The shifts in importance are used to define four periods of environmental change within the region. The periods are the following: (1) frontier settlement (1845–1900), focused on basic needs acquisition and direct utilization of the resource base; (2) drainage and land conversion (1900–1930), focused on population and economic growth, land use change, and increased resource management and competition; (3) flood control and consolidation (1930–1950), focused on inputs from external sources and infusion of advanced technology, the development of governance and social structures, and increased concern for quality of life; (4) postwar boom, flood control, and water supply (1950–1970), focused on accelerated land use change, increased pollution, and further heightened concern for local quality of life; and (5) period of limits (1970–1995), focused on pollution and resource competition concerns, a developing regional environmental ethic and amenity values, and environmental preservation governance strategies.Taken together, the five periods represent the differing nature–society systems through which South Florida's regional ecosystem was degraded and which is now entering a phase of restoration.     

News Media Coverage of Islam and Muslims in Australia: An Opinion Survey among Australian Muslims

Existing research has explored the ways the mainstream news media covers Muslims and Islam, but few studies have examined Muslims’ reactions to this reporting. Studies that have investigated this issue have identified that the responses of Muslims to news media coverage tend to be largely negative because of the lack of Muslim news sources, the stereotypical representation of Muslims in news coverage, the portrayal of Muslims as the enemy within, and the conflation of Muslims with terrorism. This paper further explores the attitudes of Muslims to news media coverage of Islam and Muslims by drawing on data from 14 focus groups (N?=?104 participants) conducted with Australian Muslims. Similar to previous research, findings reveal that Australian Muslims are highly critical of news media coverage of Islam and Muslims and express concern about the divisiveness that such portrayal can have for Australian society. However, the study participants also had positive comments to make about the news media. Possible solutions to negative news media portrayals of Muslims are considered.     

Using Simulations to Enhance Interprofessional Competencies for Social Work and Nursing Students

There is an increased emphasis on interprofessional education in the healthcare field, including social work. This paper discusses the design and implementation of an innovative idea in teaching that brings social work and nursing students together for skill development to do interprofessional work. Computer generated mannequin simulations have been used extensively in teaching medical, nursing, pharmacy, and other healthcare professions, but are a relatively new pedagogical tool in social work. Using the four interprofessional competencies put forward by the interprofessional collaborative, the authors describe the objectives, the cases utilized, the process of simulations, the technique of debriefing, and the themes that emerged from these reflective observations.     

Variable Selection for Qualitative Interactions

In this article we discuss variable selection for decision making with focus on decisions regarding when to provide treatment and which treatment to provide. Current variable selection techniques were developed for use in a supervised learning setting where the goal is prediction of the response. These techniques often downplay the importance of interaction variables that have small predictive ability but that are critical when the ultimate goal is decision making rather than prediction. We propose two new techniques designed specifically to find variables that aid in decision making. Simulation results are given along with an application of the methods on data from a randomized controlled trial for the treatment of depression.     

The effect of long-term migration dynamics on population structure in England & Wales and Scotland

We investigated the effect of migration on population dynamics in England & Wales and Scotland from the mid-nineteenth century to the present by comparing actual population size and structure with estimates based on zero net migration from a range of starting dates. In this period, Scotland had the largest net outflow among countries in Europe for which detailed information is available, whereas overall net migration in England & Wales was close to zero. In the absence of migration, population would have been over twice as large in Scotland in 2013 as the actual value, but similar to its actual value in England & Wales. Levels and pace of population ageing have been broadly similar in both countries, so the major impact of differential migration has been on population size rather than structure. We discuss these findings in relation to the debate on migration policy between political parties supporting and opposing independence in the 2014 Scottish referendum.