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Traditional medicinal plants play a central role in primary health care in most African communities, including that of the Maasai. Unfortunately, the local Maasai knowledge is under enormous pressure from introduction of agriculture, population growth, and climate change—all of which affect availability and regeneration of natural resources and ecosystem services which are accompanied by erosion of traditional knowledge. Loss of medicinal plants and the knowledge related to them would have devastating effects on the Maasai community. Therefore, it is important to document the plants and the traditional knowledge related to their use, and conservation and management. We interviewed 31 informants who were especially knowledgeable about medicinal plants. Based on these interviews, we document 62 plant species that the Loita Maasai use as medicine, and we describe the parts of the plant that are used, the methods of preparation, and how they are used. We rank them according to their importance to the people and discuss the management practices developed for these resources, and we evaluate the conservation status.

Public trust in water managers is often considered an important precondition for the effective implementation of sustainable water-management practices. Although it is well known that general public trust in government institutions is under pressure, much less is known in the literature on water governance whether such distrust also affects general and task-specific trust of the wider public in water managers. In addition, empirical studies on the determinants of such trust seem to be scarce. To fill those gaps, this study aims to measure general and task-specific public trust in water managers in the Netherlands and to assess how a selected group of potential determinants is related to general- and task-specific trust in water managers. To this end, we employ an original survey among a representative sample of the Dutch population (N = 2262). We find that trust in water managers in the Netherlands is generally high, but that it also comes with some task-specific variations. People have more trust in the flood-protection capacities of the water managers than in the capacities to successfully manage surface-water quality, nature conservation, and drought management. Using linear regression models, we subsequently find that individual-level variations in trust in water managers are best explained by one's general level of political trust. Additionally, we also show that both risk perceptions and self-evaluations of how informed people feel themselves about water management are important factors with (curvilinear) relations with trust in water managers. Overall, we conclude that water managers are under specific conditions able to build themselves well-established reputations and relatively high trust levels based on their performances. Nevertheless, trust development is far from entirely in the hands of the water managers themselves as we also conclude that trust evaluations of water managers are not immune from negative generalized political evaluations and public perceptions on water related risks.

Este artículo contiene 1 página, 1 tabla, 1 figura y 1 apéndice con una tabla., Marine Recreational Fishing (MRF) is an important activity in Europe, with 9 million fishers and generating annually € 6 billion in direct expenditures. However, there is a lack of data and understanding of MRF in Europe, particularly in Southern countries, which prevents a number of fish stocks from being effectively assessed and managed. In November 2016, a participatory workshop on MRF was held in Vigo (Spain) to identify challenges and opportunities for data collection, and to diagnose key research gaps and management issues for MRF in the Southern European Atlantic. Experts from a wide range of disciplines (researchers, policy makers, fisheries managers and commercial and recreational fishers) highlighted that the management of MRF is a challenge due to complex and dispersed legal frameworks, with multiple administrations involved, and overlapping uses of space with commercial fishing, aquaculture, navigation and tourism, among others. The lack of strong and representative fishing associations hampers research and management initiatives. Effective communication between recreational fishers, researchers and fisheries managers is also lacking. Despite the ecological, social and economic relevance of MRF, there is no systematic and comprehensive collection of information on fishing effort, recreational catches, expenses, social profile and access conditions of European recreational fishers. These data would be useful to avoid biases in the assessment of recreational fisheries due to the great diversity of ecosystems, species and typologies of users. Strategic recommendations and research priorities were also identified to address knowledge gaps and are discussed in the context of the management of MRF across Europe., The 1st Workshop on Recreational Fishing on the Iberian Atlantic Coast was co-convened by the Federación Gallega de Pesca Marítima Responsible y Náutica de Recreo, WWF-Spain, the Federación Gallega de Actividades Subacuáticas, the International Forum for Sustainable Underwater Activities and the Universities of Santiago de Compostela, Minho and Aveiro. The workshop was also supported by the Confederación Española de Pesca Recreativa Responsible, the Federación Galega de Confrarías de Pescadores and the Autonomous Government of Galicia. The workshop was funded by the Autonomous Government of Galicia, RECREGES project under Grant [ED481B2014/034-0], by the conveners and through financial contributions of Baitra Accesorios Navales, Disvent Ingenieros, Jesús Betanzos Efectos Navales, Talleres Franinox and Yamaha. CP would also like to acknowledge FCT/MEC national funds and FEDER co-funding, within the PT2020 partnership Agreement and Compete 2020, for the financial support to CESAM, under Grant [UID/AMB/50017/2013].

Two payments for forest ecosystem services (PFES) schemes under one common legal-institutional coordination mechanism but different historical-institutional background and organizational design are analyzed to measure and explain their transaction costs (TC). Data on TC related to payment transfers and conditionality compliance are collected using a combination of in-depth interviews with local PFES scheme coordinators, site visits, and secondary data analysis. The two PFES schemes show substantial differences in TC despite the fact that they emerged from the same legal-institutional framework due to differences in participation rates, types of forest ecosystem services providers, and payment characteristics. (C) 2017 Published by Elsevier B.V.

Waste management represents a challenge for public authorities due to many reasons such as increased waste generation following urban population growth, economic burdens imposed on the municipal budget, and nuisances inevitably caused to the environment and local inhabitants. To optimize the system from a sustainability perspective, moving the transition towards a more circular economy, a better understanding of the different stages of waste management is necessary. A review of recently developed sustainability frameworks for waste management showed that no single framework captures all the instruments needed to ultimately provide a solid basis for comprehensive analyses of the potential burdens associated with urban waste management. Bearing this limitation in mind, the objective of this research is to propose a conceptual and comprehensive sustainability framework to support decision-making in waste management of European cities. The framework comprises a combination of methods capable of identifying future strategies and scenarios, to assess different types of impacts based on a life cycle perspective, and considers the value of waste streams, the actors involved, and possible constraints of implementing scenarios. The social, economic, environmental, technical and political domains are covered, and special attention is paid to impacts affecting foremost the local population.

Recent coastal planning measures in south-east Portugal (Algarve), where offshore aquaculture developments were set up in fishing areas aiming to maximize expected utility of seafood production activities, raised some discontentment. Public policies created to safeguard offshore aquaculture (OSA) producers and limit small-scale fishing (SSF) activities must be adjusted accordingly in order to maximize income and keep discontentment at a minimum. We collected primary data from stakeholders, fishers (n = 18) and offshore aquaculture operators (n = 3) through participatory workshops and interviews by eliciting problematic issues derived from the offshore area creation and their relative relevance. We used these data to populate conditional probability tables and construct a related influence diagram (Bayesian belief networks) to model the affected system. We selected nine scenarios based on navigability and aquaculture area size with the aim of finding the best expected utility combinations for the OSA SSF system. The inferred results show that maximizing employment and keep pollution at low levels were the most influential factors to keep the system at a satisfactory level. The best decision was not to enlarge the aquaculture area, but to condition the access to other operational stakeholders, namely SSF operators from nearby areas. The overall results of the Bayesian belief network can be used to recommend coastal planners and decision-makers to deal with the interaction between OSA and SSF activities.(c) 2017 Elsevier Ltd. All rights reserved. FEDER Program through the project IAPAA "Avaliacao do impacto da area de producao aquicola da Armona no ecossistema costeiro e comunidades locais" (Portugal) [31-03-01-FEP-0014] info:eu-repo/semantics/publishedVersion

We identify four choice dimensions that determine the configuration and evolution of governance: formal-informal institutions, network-central steering, local-scientific knowledge and representation-participation. Choices on one dimension affect choices on the other dimensions, which naturally leads to historical dependency. We integrate these insights in a model of governance evolution that revolves around actor/institution configurations and power/knowledge configurations. In a case study of ice fishing villages on Minnesota's Lake Mille Lacs, we investigate one specific set of couplings between the choice dimensions. As we can study the local ice fishing tradition from its very beginning, the evolutionary paths of technology and institutions provide insights into how choices were made along the different dimensions and how they interacted. The case study illustrates how to apply the model, but also contributes to its further development as it draws attention to possible extensions: concepts of scale and identity. peerreview_statement: The publishing and review policy for this title is described in its Aims & Scope. aims_and_scope_url: http://www.tandfonline.com/action/journalInformation?show=aimsScope&journalCode=cjep20 ispartof: Journal of Environmental Planning and Management vol:57 issue:8 pages:1122-1144 status: published

We examine in discrete time the management of a flow pollutant that causes damage when it crosses a fixed but unknown threshold. The manager sequentially chooses a pollution level that allows learning about the threshold, thereby improving future decisions. If crossed, damage can be reversed at some cost. We analyze the conditions under which experimentation is optimal, and explore how experimentation depends on restoration costs, information about the threshold, and the discount rate. Our results suggest that the level of experimentation, defined as the difference between the optimal activity with and without learning, is non-monotonic in costs and decreasing in the discount rate. We identify two stopping boundaries for the experiment, depending on cost levels compared to the lower bound of the threshold’s interval. We show that when costs are high the stopping boundary under an infinite number of decisions is the same as when there are only two decision moments. A computational extension to more than two decisions suggests that an optimal sequence of experiments can cross the same threshold several times before experimentation ceases. These results shed light on a large class of environmental decision problems that has not been examined in the literature.

An integrated methodological framework for ex-ante evaluation and planning of public policies for sustainable agriculture at agro-landscape level is proposed. The components of the framework are to: (1) determine the private, i.e. farmers’, and public benefits associated to agro-landscapes, consisting of an agricultural land-use system, according to its performance for several market and non-market functions. Market forces determine the market benefits and preferences of society the non-market benefits; (2) explore and select potential sustainable agro-landscapes based on the private and public benefits associated with possible land-use alternatives; (3) define efficient public policy mechanisms for improving social net benefit of agro-landscapes. The framework is illustrated with a case study in a small dairy farming dominated agro-landscape in The Netherlands, with gross margin, landscape quality, nature value and environmental health as the analysed ecosystem functions. Alternative landscapes consisting of hedgerow configurations and grassland management practices were explored, yielding a set of alternatives representing the solution space in terms of change in private and public benefits. Policy mechanisms were defined to move from the current to a desired landscape based on changes in social net benefits. Moreover, the necessity of a modification in the current agri-environmental support was analysed for each landscape. The analysis considered all farmers in the agro-landscape jointly. The results for the case study showed potential prototypes of landscapes and their performance compared to the current landscape. Extension was the most efficient policy mechanism to promote the change to the socially optimum landscape alternative.

Decision support systems can be helpful tools in wetland planning and management. Decision support systems can contribute to efficient exchange of information between experts, stakeholders, decision makers and laypeople. However, the achievements of decision support systems are repeatedly being reported as modest. The objective of this article is to specify the roles and requirements of decision support tools in wetland planning. Why do such tools often fail and how can they be improved? Too often, systems are developed from a technological developers' push (supply-driven) rather than through a demand-driven process where the need for certain technologies to effectively support decision processes is being specified. It is questioned whether (often technocratic) tools are still equipped to support the complex planning and management process where different stakeholders interact. Two tools are described, which have been developed to facilitate negotiations in wetland planning and both tend to be less data-driven and more directed to play a role in participatory processes. From experiences with the development of the two decision support efforts we derive suggestions for improvement. The first tool uses spatial multi-criteria analysis techniques, to enable a structured analysis of the diversity of the water management issues. The second tool focuses on interactive design and spatial negotiation. It is concluded that application of this category of tools can be promising in early phases of decision-making. Their main contribution is to help to overcome unnecessary conflicts, to stimulate collaborative planning, to structure the problem and to provide insight in values and preferences of stakeholders involved. © 2006 Elsevier B.V. All rights reserved.

When the stakes of stakeholders are not properly incorporated during early phases of a planning process, it may later give rise to severe conflicts. The issue of how to deal with stakeholders in regional water management has been a subject of ongoing debate in the Netherlands. This paper promotes a 'platform' approach where stakeholders collectively attempt to develop plans for regional water management. Ideas for this platform approach are based on a review of research on groups governing common-pool resources. We argue that simple negotiation and mediation support tools can offer useful support and can serve to facilitate platform negotiations. We present a simple mediation and negotiation tool to support the early phases of such a land use planning process. The tool translates stakeholder preferences on the use of the landscape into spatially explicit value maps. Proposed plans can be evaluated and potential conflicts can be identified. The use of such a tool enables stakeholders and mediators to formulate explicitly the problems that need to be addressed in the decision-making process. © 2005 Elsevier B.V. All rights reserved.

Expectations about ecosystem based management (EBM) differ due to diverging perspectives about what EBM should be and how it should work. While EBM by its nature requires trade-offs to be made between ecological, economic and social sustainability criteria, the diversity of cross-sectoral perspectives, values, stakes, and the specificity of each individual situation determine the outcome of these trade-offs. The authors strive to raise awareness of the importance of interaction between three stakeholder groups (decision makers, scientists, and other actors) and argue that choosing appropriate degrees of interaction between them in a transparent way can make EBM more effective in terms of the three effectiveness criteria salience, legitimacy, and credibility. This article therefore presents an interaction triangle in which three crucial dimensions of stakeholder interactions are discussed: (A) between decision makers and scientists, who engage in framing to foster salience of scientific input to decision making, (B) between decision makers and other actors, to shape participation processes to foster legitimacy of EBM processes, and (C) between scientists and other actors, who collaborate to foster credibility of knowledge production. Due to the complexity of EBM, there is not one optimal interaction approach; rather, finding the optimal degrees of interaction for each dimension depends on the context in which EBM is implemented, i.e. the EBM objectives, the EBM initiator’s willingness for transparency and interaction, and other context-specific factors, such as resources, trust, and state of knowledge.

This study investigated the effects of legal and societal punishment on fishermen's compliance behaviour, according to fishermen's age and level of dependency on fisheries, through the use of interviews and scenarios. Ninety-five fishermen living in a coastal park (Ponta do Tubardo Sustainable Development Reserve) in the Brazilian northeast, where controlled exploitation of natural resources is allowed, took part in this study. The results showed that age alone would not affect compliance, regardless of the level of enforcement. However, it was noticed that the fishermen who claimed to depend on the money provided by fisheries, regardless of their age, were more likely to say that they would not comply, even if enforcement were stricter. The scenario analysis showed that increased monitoring and punishment (including societal pressure) could enhance compliance, especially among younger fishermen, who claimed not to depend solely on fisheries. Therefore, fisheries management should also consider differences in social groups, and not focus solely on the enforcement and punishment mechanisms, assuring that livelihood options that consider different social needs are provided. (C) 2013 Elsevier Ltd. All rights reserved.

peer-reviewed. NOTICE: this is the author’s version of a work that was accepted for publication in Marine Policy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Marine Policy, [Volume 42, 56-67, (2013)] doi: doi:10.1016/j.marpol.2013.01.023 http://www.sciencedirect.com/science/article/pii/S0165783612002032, Interaction with ecological models can improve stakeholder participation in fisheries management. Problems exist in efficiently communicating outputs to stakeholders and an objective method of structuring stakeholder differences is lacking. This paper aims to inform the design of a multi-user communication interface for fisheries management by identifying functional stakeholder groups. Intuitive categorisation of stakeholders, derived from survey responses, is contrasted with an evidence-based method derived from analysis of stakeholder literature. Intuitive categorisation relies on interpretation and professional judgement when categorising stakeholders among conventional stakeholder groups. Evidence-Based categorisation quantitatively characterises each stakeholder with a vector of four management objective interest strength values (Yield, Employment, Profit and Ecosystem Preservation). Survey respondents agreed little in forming intuitive groups and the groups were poorly defined and heterogeneous in interests. In contrast the Evidence-Based clusters were well defined and largely homogeneous, so more useful for identifying functional relations with model outputs. The categorisations lead to two different clusterings of stakeholders and suggest unhelpful stereotyping of stakeholders may occur with the Intuitive categorisation method. Stakeholder clusters based on literature-evidence show a high degree of common interests among clusters and is encouraging for those seeking to maximise dialogue and consensus forming.

There is emerging agreement that sustainability challenges require new ways of knowledge production and decision-making. One key aspect of sustainability science, therefore, is the involvement of actors from outside academia into the research process in order to integrate the best available knowledge, reconcile values and preferences, as well as create ownership for problems and solution options. Transdisciplinary, community-based, interactive, or participatoryresearch approaches are often suggested as appropriate means to meet both the requirements posed by real-world problems as well as the goals of sustainability science as a transformational scientific field. Dispersed literature on these approaches and a variety of empirical projects applying them make it difficult for interested researchers and practitioners to review and become familiar with key components and design principles of how to do transdisciplinary sustainability research. Starting from a conceptual model of an ideal–typical transdisciplinary research process, this article synthesizes and structures such a set of principles from various strands of the literature and empirical experiences. We then elaborate on them, looking at challenges and some coping strategies as experienced in transdisciplinary sustainability projects in Europe, North America, South America, Africa, and Asia. The article concludes with future research needed in order to further enhance the practice of transdisciplinary sustainability research. There is emerging agreement that sustainability challenges require new ways of knowledge production and decision-making. One key aspect of sustainability science, therefore, is the involvement of actors from outside academia into the research process in order to integrate the best available knowledge, reconcile values and preferences, as well as create ownership for problems and solution options. Transdisciplinary, community-based, interactive, or participatory research approaches are often suggested as appropriate means to meet both the requirements posed by real-world problems as well as the goals of sustainability science as a transformational scientific field. Dispersed literature on these approaches and a variety of empirical projects applying them make it difficult for interested researchers and practitioners to review and become familiar with key components and design principles of how to do transdisciplinary sustainability research. Starting from a conceptual model of an ideal-typical transdisciplinary research process, this article synthesizes and structures such a set of principles from various strands of the literature and empirical experiences. We then elaborate on them, looking at challenges and some coping strategies as experienced in transdisciplinary sustainability projects in Europe, North America, South America, Africa, and Asia. The article concludes with future research needed in order to further enhance the practice of transdisciplinary sustainability research. © 2012 Springer.

In the Philippines, Integrated Coastal Management (ICM) represents the dominant response to narratives of ecosystem decline. However, there are persistent challenges to implementation, manifested in continued resource degradation, questioning of the exercise of stakeholder involvement and rising resource conflicts. This paper examines the implementation process and how the assumptions embodied in the ICM regime meet the local reality in one group of islands in the Philippine archipelago. The evidence shows how the transformation towards a supposed equilibrium state of coastal ecosystems is undermined in the face of diverging stakeholder agendas. Expected actors are disempowered by the incoherence between the policy owners' worldview and reality, paving the way for unethical influence from elite alliances. This is coupled with a deepening of the dominance of state, international development banks, foreign aid agencies, and NGOs in promoting their respective interests. In localities such as the Babuyan Islands, when assumptions of ICM collapse it has destructive consequences for fisherfolk and the coastal environment. We conclude that if ICM is to foster an effective and equitable correction of current unsustainable exploitation patterns, then there is a need to institute improved accountability mechanisms in the devolved governance system as well as taking seriously the espoused commitment to stakeholder involvement in determining the goals and assumptions of ICM.