Sustainable drainage system site assessment method using urban ecosystem services

The United Kingdom’s recently updated approach to sustainable drainage enhanced biodiversity and amenity objectives by incorporating the ecosystem approach and the ecosystem services concept. However, cost-effective and reliable methods to appraise the biodiversity and amenity values of potential sustainable drainage system (SuDS) sites and their surrounding areas are still lacking, as is a method to enable designers to distinguish and link the amenity and biodiversity benefits that SuDS schemes can offer. In this paper, therefore, the authors propose two ecosystem services- and disservices-based methods (i.e. vegetation structure cover-abundance examination and cultural ecosystem services and disservices variables appraisal) to aid SuDS designers to distinguish and link amenity and biodiversity benefits, and allow initial site assessments to be performed in a cost-effective and reliable fashion. Forty-nine representative sites within Greater Manchester were selected to test the two methods. Amenity and biodiversity were successfully assessed and habitat for species, carbon sequestration, recreation and education ecosystem services scores were produced, which will support SuDS retrofit design decision-making. Large vegetated SuDS sites with permanent aquatic features were found to be most capable of enhancing biodiversity- and amenity-related ecosystem services. Habitat for species and recreation ecosystem services were also found to be positively linked to each other. Finally, waste bins on site were found to help reduce dog faeces and litter coverage. Overall, the findings presented here enable future SuDS retrofit designs to be more wildlife friendly and socially inclusive.     

The epistemic and strategic dimension of the establishment of the IPBES: “epistemic selectivities” at work

The economic valuation of biodiversity and related market-based policy instruments are increasingly being referred to in the international politics of biodiversity and related Multilateral Environmental Agreements. They are both the subject of diverging interests, hence leading to conflict and critique, and an impetus for compromise on the way toward a “reasonable” solution to the environmental and economic crises. This development coincides with an extensive debate on how to increase the profile of biodiversity science and make it more policy relevant. This article takes a close look at decision-making processes leading to the establishment of the Intergovernmental Science–Policy Platform on Biodiversity and Ecosystem Services (IPBES). Particular emphasis is placed on the implicit and explicit conflicts around the significance attached to the concept of ecosystem services within the IPBES debate. The article is based on the assumption that struggles over biodiversity knowledge become marginalized in favor of a stabilization of the “global paradigm of valorization.” In this vein, the concept of ecosystem services contributes to sustaining the rationale that biodiversity can only be preserved if its diverse elements are commodified. This is theoretically underpinned by the concept of “epistemic selectivities,” and I discuss its contribution to the understanding of the role of knowledge in institutional change.     

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.     

Local and landscape drivers of arthropod abundance,richness, and trophic composition in urban habitats

Urban green spaces, such as forest fragments, vacant lots, and community gardens, are increasingly highlighted as biodiversity refuges and are of growing interest to conservation. At the same time, the burgeoning urban garden movement partially seeks to ameliorate problems of food security. Arthropods link these two issues (conservation and food security) given their abundance, diversity, and role as providers of ecosystem services like pollination and pest control. Many previous studies of urban arthropods focused on a single taxon (e.g. order or family), and examined either local habitat drivers or effects of landscape characteristics. In contrast, we examined both local and landscape drivers of community patterns, and examined differences in abundance, richness, and trophic structure of arthropod communities in urban forest fragments, vacant lots, and community gardens. We sampled ground-foraging arthropods, collected data on 24 local habitat features (e.g., vegetation, ground cover, concrete), and examined land-cover types within 2 km of 12 study sites in Toledo, Ohio. We found that abundance and richness of urban arthropods differed by habitat type and that richness of ants and spiders, in particular, varied among lots, gardens, and forests. Several local and landscape factors correlated with changes in abundance, richness, and trophic composition of arthropods, and different factors were important for specific arthropod groups. Overwhelmingly, local factors were the predominant (80 % of interactions) driver of arthropods in this urban environment. These results indicate that park managers and gardeners alike may be able to manage forests and gardens to promote biodiversity of desired organisms and potentially improve ecosystem services within the urban landscape.     

Rediscovering the value of urban rivers

Rivers commonly serve as defining, founding features of human settlements, yet urbanisation has degraded them, often to the extent that they no longer provide the services to society from which the settlements developed. Urban river restoration has expanded in recent years and part of this can be attributed to the increased recognition of the interconnected benefits that restored ecosystems can provide to society. This paper reviews the impact of urbanisation on rivers and the ecosystem services that they provide, and explores the ecosystem approach to restoration. Techniques and tools for the practical application of the ecosystem services approach in conservation are considered, with reference to case studies. There is a need to internalise ecosystem service insights into pragmatic, transparent and readily-used and understood planning tools, based on the capacities of a range of ecosystem services in river corridors. This is necessary if we are to avoid the continued erosion of critical resources such as rivers, rediscovering their multiple values to society, and to accelerate the translation of these sustainability concepts into applied tools.     

Engaging urban nature: improving our understanding of public perceptions of the role of biodiversity in cities

In recognition of the value of biodiversity for cities and citizens, a number of international programs have been designed to help municipal governments sustain, protect, and augment the biodiversity and ecosystem services within their jurisdictions. A key component of these programs is public engagement, where citizens assume a more active role in maintaining urban biodiversity and associated ecosystem services. Yet, there are few studies which have as their focus public knowledge of the importance of nature, biodiversity, and ecosystem services in cities. To these ends, this study was conducted to develop a better understanding of how the public understands and interacts with urban biodiversity, particularly in comparison to subject matter experts. Using topics generated from expert interviews and the literature, an interview guide was developed for the general public, structured around the general themes of a definition of urban biodiversity, as well as the perceived benefits, costs, and threats related to urban biodiversity. While there were similarities in the responses of citizens and experts, some differences did emerge in terms of accounting for specific urban ecosystems, acceptable interventions to support and enhance biodiversity, and the character and extent of the cultural services derived from urban nature. Insights from this work can be used to inform education and information efforts for the public, as well as raise awareness among city planners and nature professionals of the array of urban ecosystem services recognized and made use of by the public.

     

Family-Centered,Community-Based Asset Building: A Strategic Use of Individual Development Accounts

This research examines individual development account (IDA) programs as part of a broader community development strategy for low-income/low-wealth communities, particularly communities of color. Through a review of multiple literatures and detailed case studies, we explore the potential of explicitly creating a community-based, family-centered development account program as a step toward a comprehensive community asset building approach in low-income urban neighborhoods. From the perspective of IDA practitioners, such an approach provides program participants with local support networks and access to additional services. From the perspective of grassroots community organizers, such an approach provides tangible benefits to low-income residents of their neighborhoods. The likelihood of success may depend on the availability of local resources to build areas of strength and reduce vulnerabilities, but there are examples where a family-centered, community-based asset building approach seems to thrive.     

Laggards or Leaders: Conservers of Traditional Agricultural Knowledge in Bolivia

Many sustainable agricultural practices are based on local and traditional farming knowledge. This article examines the conservation and loss of three traditional practices in the Bolivian Altiplano that agronomic research has shown increase the resiliency of small farmers in the face of climate‐related risks. These practices are the use of manure, the use of local forecasts and risk‐management strategies, and the preservation of crop biodiversity. Although these practices are widely used today, farmers have been steadily abandoning them during the past decade. This article examines the characteristics of those who maintain and those who abandon traditional practices to see if the abandonment of local knowledge can be explained by the adoption‐diffusion literature. This research does not support the adoption‐diffusion literature; although the factors related to conservation are slightly different for each practice, the findings do not support the idea that young, educated, and wealthier farmers are more likely to reject local knowledge. Instead, off‐farm activities such as migration, employment, and trade seem to be related to the decline in local practices as each affects the availability of labor and the availability of people to learn these practices.     

Coupling ecosystem services supply and human ecological demand to identify landscape ecological security pattern: A case study in Beijing–Tianjin–Hebei region,China

Landscape ecological security pattern (LESP) can effectively safeguard urban ecological security, which is vital for urban sustainable development. Previous studies have not adequately considered the ability to fulfill people’s demand for ecosystem services when identifying sources of LESP. To address this gap, we sought to develop a more comprehensive approach coupling ecosystem services supply and human ecological demand to construct LESP for Beijing–Tianjin–Hebei region. We proposed a new evaluation framework integrating ecosystem services importance assessment and landscape connectivity analysis with human ecological demand importance assessment to identify ecological sources. Afterwards, ecological corridors were identified using Minimum Cumulative Resistance model based on sources and resistance surface modified through nighttime light data. Combined with ecological sources and corridors, LESP for Beijing–Tianjin–Hebei region can be constructed. The ecological sources are mainly located in western Beijing and southwestern Chengde. The ecological source area totals 36,245.50 km², accounting for 21.26% of the ecological land in Beijing–Tianjin–Hebei region. The ecological corridors cross the whole region, from northeast to southwest, similar to the direction of the Yanshan–Taihang Mountain Chain. All the national nature reserves and 91.4% of the provincial nature reserves are distributed within the LESP. The validity of our methodology is confirmed by the distribution of the nature reserves. This study adds new insights into the methodology of LESP construction, and its results provide information about local ecological characteristics that can provide an important reference for decision-making concerning urban planning and ecological conservation.     

Sustainable urban greening strategies for compact cities in developing and developed economies

Urban greening contributes notably to quality of life and ecosystem services in cities. Compact cities in developing and developed countries are commonly beset by greenspace deficit. Based on literature review supplemented by field studies in different cities, a sustainable urban greening strategy is proposed. Urban renewal and new developments without a greening vision could miss the opportunities to bring relief. The public and private sectors can join hands to insert plantable spaces into the urban fabric. Urban greenspaces (UGS) with good connectivity forming a green network to permeate the city constitute the hallmarks of a naturalistic design. Preservation and creation of natural areas with rich biodiversity offer a new dimension to UGS design. Greening benefits could be expressed in economic terms to complement conventional ecological-environmental emphasis. Outstanding trees could receive high-order conservation efforts, and trees in construction sites warrant enhanced protection. Tree transplanting demands an overhaul in concepts and skills. Improving roadside tree planting and maintenance offers a cost-effective way to upgrade the townscape. Ameliorating widespread soil limitations could remove a major hindrance to tree growth. Innovative ideas of development right transfer, street pedestrianization, river and canal revitalization, green roofs and green walls could mobilize hitherto underused plantable resources. Lacking appropriate institutional setup and scientific capability pose intractable bottlenecks. Innovative public policies and greening technologies are needed for sustained improvements. Amalgamating natural and social sciences in a multidisciplinary approach and reinforcing the link between science and public policies could overhaul greening.     

The challenge of Democratic participation in the community development process

The purpose of local government as set out in section 10 ofthe New Zealand Local Government Act 2002 is to enable democraticdecision-making and action by, and on behalf of, communitiesand to promote the social, economic, environmental and culturalwellbeing of communities in the present and for the future.  This paper will cover the following areas.

• Articulate thepurposes and objectives of the 2002 rewrite ofNew Zealand localgovernment legislation, including the empowermentof communities,and the parallel with international practicein local government.
• Examine the theoretical and practical implications of thelongterm council community plan and the community developmentprocess.
• Critically examine the effectiveness of the approachto communitydevelopment by New Zealand local councils where,unlike in othercountries such as the United Kingdom, they donot have the roleof providing social services.
• Explore theparadox of community development within the NewZealand statutorysector.
• Provide a framework that enables a more effectivecommunityconsultation process for community development.

     

Social ecological complex adaptive systems: a framework for research on payments for ecosystem services

The environment is both a setting for and a product of human interactions. Understanding the dynamic nature of human-environment interactions is critical for mitigating the impacts of human induced environmental change and understanding how the environment shapes social systems. Current research has focused on the reduced ability of many natural systems to provide ecosystem services and the subsequent impact on human well-being. Furthermore, there has been a proliferation of cases analyzing the impacts of payment programs designed to enhance ecosystem services. However, analyses that link environmental policies through to their ecological results are not common and methods to do so are not thoroughly developed. To better analyze these interactions, a theory or framework is necessary. This article presents a framework of social ecological complex adaptive systems (SECAS). The framework links structuration theory from social science with the theories of complex adaptive systems from ecology to provide an enhanced understanding of the human drivers and responses to environmental change. The framework is presented as a recursive process where social and ecological systems are both the medium for and product of social action and ecological disturbance. A case study of Costa Rica’s ecosystem service payment program is presented as a demonstration of empirical applicability. This framework is proposed as a method to evaluate payments for ecosystem services, conservation policies, urban ecosystems, and for land use change in general.     

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.     

Evaluating the engagement of universities in capacity building for sustainable development in local communities

Universities have the potential to play a leading role in enabling communities to develop more sustainable ways of living and working however, sustainable communities may only emerge with facilitation, community learning and continual efforts to build their capacities. Elements of programme planning and evaluation on the one hand, and capacity building on the other, are needed. The latter entails approaches and processes that may contribute to community empowerment; universities may either lead such approaches, or be key partners in an endeavour to empower communities to address the challenges posed by the need for sustainable development. Although capacity building and the promotion of sustainable development locally, are on the agenda for universities who take seriously regional engagement, very little is published that illustrates or describes the various forms of activities that take place. Further, there is a paucity of studies that have evaluated the work performed by universities in building capacity for sustainable development at the local level. This paper is an attempt to address this need, and entails an empirical study based on a sample of universities in the United Kingdom, Germany, Portugal and Brazil. The paper examines the extent to which capacity building for sustainable development is being undertaken, suggests the forms that this might take and evaluates some of the benefits for local communities. The paper concludes by reinforcing that universities have a critical role to play in community development; that role has to prioritise the sustainability agenda.     

Comparing community garden typologies of Baltimore,Chicago, and New York City (USA) to understand potential implications for socio-ecological services

Urban community gardens offer unique social and ecological benefits in cities. However, given the dynamic nature of cities and the profound effects of variable land uses on green space provisioning for people and wildlife, investigating community gardens from a landscape perspective offers valuable insight into the functions of these spaces in terms of ecosystem services and sustainable development. In this study, we use garden locations provided by stakeholder groups and fine-scale spatial data to compare community gardens across three cities: New York City, NY, Chicago, IL, and Baltimore, MD (USA). In each city, we assess the spatial distribution of gardens and compare the natural vegetation and impervious surface cover within these gardens to the surrounding neighborhood and landscape. We then compared these cities to clarify the role of community gardens in metropolitan development. Our findings demonstrate that gardens cluster in neighborhoods in New York City and Chicago, but they are more spatially distributed across the landscape in Baltimore. The distribution of Baltimore’s community gardens is more likely to be contributing to a greater network of ecosystem services across a broader urban landscape. Moreover, at the garden scale, gardens in NYC and Chicago have more canopy cover and built infrastructure than the more herbaceous gardens in Baltimore. This suggests that our case study cities exhibit different garden typologies, histories, and potential for ecosystem services. This work provides critical insight into the typology in and around community gardens in different cities, which is useful in understanding the potential ecosystem services and planning trajectories of these cities.

     

Floral biodiversity of allotment gardens and its contribution to urban green infrastructure

Allotment gardens are a key feature of the urban landscape, providing numerous benefits beyond those of food production. These include ecosystem services such as local climate modification, pollination, and providing a pleasant location for socialising. The biodiversity of flora underpins many of these ecosystem services. The aims of this study are to assess the spontaneous vascular flora of urban allotment gardens and derive estimates of the species richness and diversity. In doing so, the specific position of allotment gardens within urban green infrastructure will be revealed and the role of allotment users in shaping local biodiversity determined. 358 species of spontaneous flora were recorded in 11 representative allotment garden estates (total area 150 ha) in Poznań, Poland. Fourteen biodiversity features were taken into account. The investigated areas exhibited high plant species richness, high diversity, low synanthropisation level, and contained valuable geobotanical elements, including plants of key importance for the European Community. For these reasons, allotment gardens should be considered as biodiversity hotspots for native species within urban green infrastructure. Based on an analysis of the spatial and functional organization of 110 individual plots, four types of usage, and corresponding plant diversity have been distinguished. The composition of the flora depends mostly on spatial and functional organization of allotment gardens and, to a much lesser extent, on the habitat conditions, which on individual plots varied very little. The high species richness and diversity in allotment gardens has important consequences for urban planning.     

Conservation Management of EU Priority Habitats after Collapse of Traditional Pastoralism: Navigating Socioecological Transitions in Mountain Rangeland

Agricultural abandonment is a major driver of change in rural landscapes. Assumed to provide beneficial results to the environment and the conservation of biota, rural abandonment triggers landscape and biotic homogenization and loss of valuable species and habitats. This article focuses on the ecological effects and conservation challenges of shifts in extensive grazing regimes on marginal pastureland of Mediterranean mountains. We conceptualize a navigated socioecological transition toward conservation‐oriented management after the collapse of historical land systems. The article provides examples from the LIFE+ project “Higro,” developed in mountainous protected areas in Portugal, of how management for conservation could sustain disturbance‐dependent habitats. We argue that actively and regularly managing large habitat areas should be envisaged as a short‐term approach to limit the immediate effects of rural abandonment. A gradual integration of conservation targets with other activities in changing rural economies is necessary to foster long‐term conservation of species and habitats, building on the link between conservation‐oriented habitat management and ecosystem services in rural landscapes. Conservation goals should run alongside recovery of social systems and innovation applied to traditional sources of income. This parallel development would contribute to building up social‐ecological resilience by maintaining a diversity of social and ecological capital in rural areas.     

Diffusion of the Property Tax Work-Off Program for Senior Homeowners in Massachusetts

Property tax work-off programs (TWOPs) provide senior homeowners with relief from some of their property tax obligations in exchange for services provided to local governments. These programs are offered by some county and municipal governments at their own discretion in a number of states. Through a qualitative study comparing municipalities in Massachusetts that participate in the program with similar communities that do not participate, the authors sought to learn the reasons for both participation and nonparticipation. They interviewed local officials in eight participating and six nonparticipating communities. Mohr's theory for adoption and Roger's theory for diffusion are used for the conceptual framework of the study. Local leaderships' motivation, financial or political resources and obstacles, senior homeowners' awareness, communication between communities, and perceived benefits of the program were the major factors in adoption and diffusion of TWOPs in Massachusetts.     

Global production and local jobs: can global enterprise networks be used as levers for local development?

This article is developed out of a research project on ‘Global Production and Local Jobs’ launched by the International Institute for Labour Studies of the International Labour Organization (ILO). It identifies salient features of global production networks in the automobile, electronics and apparel industries, and discusses their implications for local industrial upgrading, jobs and development policy. The approach combines in novel forms complementary analytical frameworks such as the global value chain and industrial district perspectives, in order to highlight interactions between global and local forces in the operation of transnational production networks. Central issues revealed by this approach include: the rise of entry barriers into the most profitable, service‐intensive activities of global value chains, that reduce small firms' prospects for industrial upgrading; the uneven benefits derived from participation in global production networks at the local level; and the need for local institutions to devise policy responses through a flexible, network‐oriented approach involving a broad local constituency.     

Breaking the Food Chains: An Investigation of Food Justice Activism*

This article develops the concept of food justice, which places access to healthy, affordable, culturally appropriate food in the contexts of institutional racism, racial formation, and racialized geographies. Through comparative ethnographic case studies, we analyze the demands for food justice articulated by the Karuk Tribe of California and the West Oakland Food Collaborative. Activists in these communities use an environmental justice frame to address access to healthy food, advocating for a local food system in West Oakland, and for the demolition of Klamath River dams that prevent subsistence fishing. Food justice serves as a theoretical and political bridge between scholarship and activism on sustainable agriculture, food insecurity, and environmental justice. This concept brings the environmental justice emphasis on racially stratified access to environmental benefits to bear on the sustainable agriculture movement's attention to the processes of food production and consumption. Furthermore, we argue that the concept of food justice can help the environmental justice movement move beyond several limitations of their frequent place‐based approach and the sustainable agriculture movement to more meaningfully incorporate issues of equity and social justice. Additionally, food justice may help activists and policymakers working on food security to understand the institutionalized nature of denied access to healthy food.