Urban open spaces from a dispersal perspective: lessons from an individual-based model approach to assess the effects of landscape patterns on the viability of wildlife populations

Green areas drawn on a city plan represent open spaces that have different meanings for humans and wildlife. Diverse kinds of green may influence species viability in urban environments. It is necessary to understand what those areas mean for wildlife populations and how land-use changes affect habitats and movements for making scientifically defensible planning and design decisions. My objective was to demonstrate how open space and urban development patterns affect the viability of wildlife populations in urbanizing landscapes from a movements perspective. Eight scenarios for 2060 for an urbanizing area near Portland, Oregon combined four open space (none, corridors, parks, and network) with two urban development patterns (compact and dispersed). Dispersal model HexSim simulated three target species – Red-legged frog (Rana aurora aurora), Western meadowlark (Sturnella neclecta) and Douglas squirrel (Tamasciurus douglasii) – movements on those scenarios to compare and contrast sustained populations to the ca. 2010 baseline landscape. Network scenarios presented the largest number of frog breeders. Greenway scenarios showed the largest populations of squirrels. Park and network scenarios sustained viable populations of meadowlarks, but park scenarios performed best. Compact development scenarios performed best for most indicators, while dispersed development scenarios performed better for meadowlarks. Network scenarios performed best when considering the collective of species. Networks presented more diverse habitats, sustaining higher diversity of species. For plans to sustain more species, more comprehensive and diverse habitats must be promoted, otherwise trade-offs should be expected – like the extinction of meadowlarks in greenway scenarios.

     

Towards a geography of transnational spaces: Indian transnational communities in Australia

Abstract Few studies on migrant transnationalism have explicitly adopted a geographical perspective, despite the widespread use of spatial metaphors in the literature and the potential advantages that a geographical approach offers. In this article, the geography of the transnational spaces of Punjabis, Kannadigas and Indo‐Fijians is analysed. Punjabis have constructed complex transnational spaces that are virtually global in scale. Kannadigas are engaged in transnational activities linking their places of residence with south India. Indo‐Fijians have emerged as a regional transnational community stretching across the Pacific Ocean. On the basis of their experiences, a consistent terminology is suggested and a typology of different models of transnational spaces is developed. This typology provides a tool to compare different transnational communities beyond the Indian experience. It can be seen as a preliminary step in the direction of a more theoretical approach that links the geography of migrant transnational spaces with sociological debates on social space.     

Canopy precipitation interception in urban forests in relation to stand structure

Urban forests provide important ecosystem services. In terms of hydrological benefits, forest ecosystems in urban environments represent qualitative and quantitative filter for rainwater. We quantified the canopy interception in relation to urban forest stand structure and rainfall intensity in an urban transect of the mixed (upland) forest in the city centre, towards a riparian pine forest and a floodplain hardwood forest in the City of Ljubljana, Slovenia. Bulk precipitation in open areas and throughfall were measured with fixed rainfall collectors in each forest. Stemflow was estimated from a review of relevant literature. We found that canopy interception in selected urban forests was mainly affected by tree species composition and other stand structure variables, such as canopy cover and tree dimensions. Average annual canopy interception was highest in the mixed forest (18.0% of bulk precipitation), while the riparian pine forest had the lowest level (3.9% of bulk precipitation) and the floodplain hardwood forest had the intermediate level for interception (7.1% of bulk precipitation). The mixed forest exhibited the stand structure factors that contributed to the highest canopy interception among the studied forests: high assemblage of dominant coniferous trees, denser canopy cover and the highest growing stock. Furthermore, rainfall intensity has proven to be an important factor for the seasonal partitioning (comparing the leafed and leafless period) of canopy interception. A better understanding of precipitation interception processes in urban forests is needed to assist urban forest managing and planning, aiming at maximizing canopy interception for the mitigation of stormwater runoff and flooding in urbanized watershed.     

Comparing the relative abilities of tree species to cool the urban environment

Increasing urbanisation poses numerous challenges to human quality of life. Cities are particularly vulnerable to the urban heat-island effect, which will be amplified by climate change. Increasing tree cover may be one of the most cost-effective ways of moderating urban temperatures. Trees cool their surroundings by casting shade, reflecting solar radiation, transpiring, and intercepting rainfall that subsequently evaporates. However, the potential of trees to reduce the urban heat-island effect is underutilised. The aim of this study was to synthesise understanding of the relative abilities of different tree species to provide urban cooling in temperate regions of the world and thereby develop a pragmatic approach for choosing those trees that have greatest potential in that regard. Based on a literature review and semi-structured interviews with leading experts, we developed a series of scenarios to illustrate the impacts of a tree’s cooling mechanisms and tree species’ attributes on components of the surface-energy balance equation. This enabled us to select parameters and propose simple equations that can be used to compare the relative abilities of tree species in relation to each of the cooling mechanisms. The parameters selected were for: transpiration – crown diameter, Leaf Area Index (LAI), canopy aspect ratio, and stomatal conductance or growth rate; reflection – albedo, crown diameter and LAI; shading – canopy aspect ratio, crown diameter, LAI and tree height. The approach is intended for use by urban planners and managers who wish to make informed decisions about which tree species to select for planting to counter the urban heat-island effect.     

Coupling human preferences with biophysical processes: modeling the effect of citizen attitudes on potential urban stormwater runoff

Green infrastructure (GI) is gaining wide popularity as a means to reduce urban stormwater runoff. The challenges to long-term success of many GI policies, however, depend on citizen understanding and willingness to be engaged in the process of GI implementation. In this study, we developed a conceptual model that incorporated human preferences and biophysical processes in a coupled manner to estimate stormwater runoff variation at the sewershed scale under different acceptable GI implementation scenarios. To investigate resident receptivity toward GI implementation, we conducted surveys in selected Syracuse sewersheds and developed the scenario of residents implementing rain barrels and rain gardens in their private properties based on the survey results. We simulated this scenario at the lot level using the model we developed within the framework of the EPA SWMM 5 model to estimate reductions in peak flow and total runoff volume for major storm events. With our model, we also tested the effect of planned government tree planting scenarios. The scenario simulations were applied in three urban sewersheds of varying socio-economic and biophysical structures in the City of Syracuse, New York. The simulation results indicated that both the “government participation” and “household participation” scenarios, compared to pre-GI-development conditions, would contribute to a modest reduction in stormwater peak flow (>4 %) and total runoff volume (>5 %) across the simulated sewersheds. This study provides decision makers with a scientific methodology to quantify how human decisions can shape ecosystem function, and thus support sustainable stormwater management planning while addressing citizen preferences and needs.     

Poverty Research in a Development Policy Context

This article provides an evaluation of the extent to which science is addressing worldwide poverty and hunger. It is based on the literature contained in the Thomson Reuters' Web of Science Citation Index (1980 to 2008) and focuses on the WOTRO Strategy Plan 2007–2010 of the Netherlands Foundation for the Advancement of Tropical Research, although similar policies from other countries might also be assessed. The data show that poverty/hunger research has grown steadily over time in many disciplines, most significantly in Environmental Sciences and Technology. Much of this research is hidden; hence the construction of an internationally recognised open‐access database is recommended so that scientists can easily identify critical gaps related to scientific capacity‐building.     

Analyzing the pattern and connectivity of urban green spaces: A case study of Izmir, Turkey

The primary concerns in this study were to quantify the connectivity and green space pattern using landscape metrics (PLAND, NP, AREA_MN and CONNECT) in the central districts of the city of Izmir. The primary research materials included thirteen 1:25,000 scale standard topographical maps and IKONOS satellite image with 1 m resolution. The PLAND scores revealed that while the urban fabric occupied almost 26 % of the study area, the urban green spaces covered only 1.45 %. This was also the lowest score in proportion to the areas of other land-use/cover classes. Furthermore, the results of NP and MPS indicated that the configuration of urban green spaces was very patchy and highly fragmented. Likewise, using CONNECT, the overall connectivity score of urban green spaces was 0.12, which was the lowest score of all areas measured the metrics. The Güzelbahçe district seemed to hold the most promise for connectivity, with a CONNECT score of 3.75. On the other hand, the Bornova district presented the least promising case in terms of connectivity, with a score of 0.59. In the study area, the correlations between the size of the districts/built-up areas and the CONNECT scores of the urban green spaces were found to be “non-significant” (P?<?0.01). The ultimate goals were to increase the amount of systematically planned urban green spaces and set up a green infrastructure in Izmir. In the case of Izmir, a master planning approach, which uses a systematic and comprehensive method to guide urban green spaces, is necessary to develop planning and design strategies for fully functional and multi-purpose urban green space systems.     

Crimes against non-human animals: Examining dog fighting in the UK and the USA through a green criminology perspective

This article reviews the social scientific literature published between the late 1990s and 2021 on the illegal ‘sport’ of dog fighting in the UK and USA. Adopting a green criminological perspective, it argues that studying dog fighting is important for understanding the ways in which this form of animal cruelty contributes to a range of social and animal harms. The review is structured in five sections. The first situates the review theoretically by introducing key ideas within green criminology that will inform the discussion. The next section presents a typology of the different levels of dog fighting in both countries. The third section then explores both the motivations of contemporary dog fighters, as well as the justifications they deploy to defend their ‘sport’ to outsiders. The fourth section then adopts a green criminological perspective to explore the various social and animal harms associated with dog fighting. The final section then brings the threads of the discussion together and highlights some directions for future research.     

Configurations of geographic and societal spaces: a sociological proposal between ‘methodological nationalism’ and the ‘spaces of flows’

Abstract The societal practices, symbol systems and artefacts that form sociology's field of study are shifting in their spatial reach. Terms like internationalization, globalization, glocalization or transnationalization denote an (at least perceived) increase in the flow of information, commodities and capital across nation‐state borders as well as an unprecedented ease of human spatial mobility. Situated in the wider research programme of transnationalism, in this article I present a typology of geographic‐societal spatial configurations, of which transnationalism is one of several ideal types. Distinguishing explicitly between an absolutist and a relativist approach to space and applying this to geographic and societal spaces, the article puts forward a framework for discussing how shifts in the geographic reach of the societal are taking place. The case of General Motors provides an example of how such a typology could be applied. The article concludes by discussing some consequences for future empirical research.     

Determinants of urban tree canopy in residential neighborhoods: Household characteristics, urban form, and the geophysical landscape

The aesthetic, economic, and environmental benefits of urban trees are well recognized. Previous research has focused on understanding how a variety of social and environmental factors are related to urban vegetation. The aim is often to provide planners with information that will improve residential neighborhood design, or guide tree planting campaigns encouraging the cultivation of urban trees. In this paper we examine a broad range of factors we hypothesize are correlated to urban tree canopy heterogeneity in Salt Lake County, Utah. We use a multi-model inference approach to evaluate the relative contribution of these factors to observed heterogeneity in urban tree canopy cover, and discuss the implications of our analysis. An important contribution of this work is an explicit attempt to account for the confounding effect of neighborhood age in understanding the relationship between human and environmental factors, and urban tree canopy. We use regression analysis with interaction terms to assess the effects of 15 human and environmental variables on tree canopy abundance while holding neighborhood age constant. We demonstrate that neighborhood age is an influential covariate that affects how the human and environmental factors relate to the abundance of neighborhood tree canopy. For example, we demonstrate that in new neighborhoods a positive relationship exists between street density and residential tree canopy, but the relationship diminishes as the neighborhood ages. We conclude that to better understand the determinants of urban tree canopy in residential areas it is important to consider both human and environmental factors while accounting for neighborhood age.     

Ecosystem services of urban green spaces in African countries—perspectives and challenges

The concept of ecosystem goods and services is increasingly used to describe how biodiversity and ecosystems are linked to human well-being and that it should be placed at the core of sustainable urban development. Predictions of a tremendous future increase of urbanization in Africa necessitate an investigation into the research on ecosystem goods and services in the urban green infrastructure of Africa. Ecosystem goods and services (ES) are described as the benefits humans derive directly or indirectly from ecosystem functions and are classified as supporting, provisioning, regulating and cultural services. A literature study focusing on journal papers was conducted. Additionally a case study based on two masters studies was further refined. ES studies in African cities are biased towards South Africa and include assessments and economic valuations in which several different methods were used to determine direct consumptive and non-consumptive and indirect use values. Emphasis was placed on the multifunctional nature of ES. The main objectives of these studies were to sensitize policy makers, planners and the general public about the importance of biodiversity and ES. Ecosystem-based adaptation is discussed as the most appropriate approach in terms of applying knowledge about ES and their values in African cities as many residents still rely on ES from natural areas, but the major ecological, economic and political challenges are acknowledged. A case study focusing on domestic gardens (private green spaces) have indicated that the demand and supply of certain ES differ along a socio-economic gradient due to poor service delivery and smaller plots in the poorer areas mainly due to the legacy of separate development of the past. Where provisioning services are mainly outsourced in cities, it was found that plant species useful as food, medicine, etc. were more frequent in the gardens of poorer residents than in those of more affluent areas. The tendency to pay more for residential properties close to public open spaces, as in Europe, could not be statistically proven in the more affluent areas of a South African city, although the property values in proximity of public open spaces in some of the areas studied were lower than further away.     

Getting closure: The role of urban forest canopy density in moderating summer surface temperatures in a large city

With a growing number of people living in urban areas, city residents are more frequently exposed to stresses related to the built environment including elevated summer surface temperatures contributing to the urban heat island (UHI) effect. This study examines the role of urban tree density in moderating surface temperature variation in a densely populated city (Toronto, Canada). By applying parallel aspatial (OLS) and spatial regression (GWR) approaches with satellite derived data describing tree canopy density and surface temperature, one dimension of tree canopy quality (i.e., canopy density) is shown to contribute directly to a reduction in the surface urban heat island (SUHI) effect at a local scale. Though the model fit differed between the two regression approaches, both exhibited moderately strong explanatory power and demonstrated that observed surface temperature decreases in locations with increasing high-density and closed tree canopy. Study findings provide an empirical basis to recommend that municipal urban forest strategies embrace canopy quality metrics, such as increasing the density of existing urban forest stands, as a part of tree planting objectives seeking to effectively deliver temperature moderation as a valuable ecosystem service.     

A nurse's guide to mental health assessment reference sources

1. As the research base on psychological testing has proliferated across various disciplines, a comprehensive review of the testing literature is recommended. 2. In researching literature on psychological tests, nurses need to rely on traditional print as well as electronic databases and Internet sites. 3. In reviewing test items or in using a test, nurses need to be aware of test-user qualifications and publisher copyright restrictions.     

New Directions in the Sociology of Collective Memory and Commemoration

The study of memory straddles a wide range of social science disciplines including sociology, psychology, anthropology, and geography. Within sociology, reviews of the literature have already been carried out, but these are now somewhat dated. This article takes the measure of recent prior research on the sociology of collective memory and commemoration by (1) proposing a classification of collective memory research; (2) organising the literature under the headings of theoretical developments, methodological strategies, and methodological challenges; and (3) offering suggestions for maximising the internal cohesion and external utility of the sub-field.     

Culture Within Sites,Culture as Resources,and Culture as Wider Contexts: A Typology of How Culture Works in Social Movement Theory

Sociologists of social movements agree that culture matters for studying collective action, and have proposed a variety of theoretical concepts to understand culture and mobilization, including framing, free spaces, and collective identity. Despite this, what we mean when we say “culture matters” remains unclear. In this paper, I draw on 30 years of social movement theory and research to construct a typology of three ways that culture is seen as shaping social movement activity: (i) culture renders particular sites fruitful for social movements to mobilize out of; (ii) culture serves as a resource that assists in movement action; and (iii) culture provides wider contexts that shape movement activity. This typology represents the analytic building blocks of theories about culture and social movements, and is presented towards the end of clarifying and sharpening our theoretical concepts. The paper concludes with suggestions for future research that draw on, refine, and extend these three building blocks.     

Civil Society Organisations in Research: A Literature-Based Typology

This article explores literatures from various sources to highlight and understand differences among key players surrounding the perceived nature and role of civil society in research from different literature streams. Including Civil Society Organisations (CSOs) in research activities is an integral part of a broad drive towards integration of science and society. Interest in CSO inclusion in research is widespread, but lacks a coherent focus and clarity on what CSOs are. Without this clarity, CSO-inclusive research, or policy, may be ineffective. This article addresses this gap in knowledge by presenting findings from an exploration of academic, policy and research project literature in order to come to a view on CSOs in research. This culminates in a typology of CSOs and provides a means of identifying types of CSOs. The typology shows four main types of CSO (common cause, shared voice, research-oriented, commercially oriented) and provides a definition for each type, along with a basis for the definition; an example of each; some typical terminology; typical area of activity; properties; typical mission; key areas of interest and their ‘action logic’ in research.     

Volunteer Performance in the Light of Organizational Success: A Systematic Literature Review

Volunteers are crucial to the functioning of nonprofit organizations. Thus, researchers in various disciplines investigate volunteer performance, broadly defined as the value of individual volunteers’ activities for the accomplishment of organizational goals. Yet a comprehensive overview is still missing. To structure this fragmented literature, the systematic review presented herein covers the antecedents and dimensions of individual volunteer performance in the light of organizational success discussed in 75 academic articles. With an integrated framework of volunteer performance, derived from theoretical considerations of organizational success and the ability–motivation–opportunity framework, this article suggests a systematic classification of current scientific knowledge about the antecedents and dimensions of volunteer performance. In turn, this review offers two instructive research avenues helping to develop a holistic picture of the antecedents and dimensions of individual volunteer performance.     

The impact of different tree planting strategies on ecosystem services and disservices in the piazzas of a northern Italian city

Urban Ecosystems - Achieving urban sustainability goals, and improving the quality of life in cities, are aided by the careful selection of tree species for public green spaces. Numerous trade-offs...     

A proposed multi-level plan to market sociological competencies

One main purpose of this paper is to encourage sociologists to fully support their sociological association leaders’ efforts to further develop and implement comprehensive plans to improve the image of sociology, especially among those who can employ our graduates, but also among the general populace. Preceding a proposed multi-level plan is an attempt to integrate and present many of the competencies that sociologists and social psychologists have identified through research into a classification of sociological and social psychological skills. The typology can facilitate the selection of competencies appropriate for academic courses or seminars. In brief, the ten categories of this typology are: (1) Communication Skills; (2) Conceptual Tools; (3) Critical Thinking; (4) Problem Solving Strategies; (5) Special Competencies Applicable to Work Organization; (6) Group Dynamics; (7) Group Counseling; (8) Applied Social Research Methodologies; (9) Consulting Expertise; and (10) Competence in Self-Marketing Skills that Students Need. The several examples of skills within each of the ten classifications could be considered by faculty for possible inclusion in their syllabi. A discussion of the necessity to better inform business, industry, foundations, and government agencies of sociological competencies is provided followed by a multi-level public relations proposal, “A Plan to Put Career Vagueness Behind Us.” The plan presented is not intended to bethe plan. It can serve as a check list or supplement to the strategic plans currently being developed and implemented by the ASA and other sociological associations.