Raphaël Billé

Use of ecosystem services economic valuation for decision making: Questioning a literature blindspot

Ecosystem Services economic Valuation (ESV) is often seen as a tool that can potentially enhance our collective choices regarding ecosystem services as it factors in the costs and benefits of their degradation. Yet, to achieve this, the social processes leading to decisions need to use ESV effectively. This makes it necessary to understand if and how ESV is or is not used by decision-makers. However, there appears to be a literature blindspot as to the issue of the Use of Ecosystem Services economic Valuation (UESV). This paper proposes a systematic review on UESV in peer-reviewed scientific literature. It shows that this literature gives little attention to this issue and rarely reports cases where ESV has been put to actual use, even though such use is frequently referred to as founding the goal and justification of ESV. The review identifies three categories of potential UESV: decisive, technical and informative, which are usually mentioned as prospects for the valuations published. Two sets of hypotheses are examined to explain this result: either the use of ESV is a common practice, but is absent from the literature reviewed here; or the use of ESV is effectively rare. These hypotheses are discussed and open up further avenues of research which should make the actual use of ESV their core concern.

Taking Action Against Ocean Acidification: A Review of Management and Policy Options

Ocean acidification has emerged over the last two decades as one of the largest threats to marine organisms and ecosystems. However, most research efforts on ocean acidification have so far neglected management and related policy issues to focus instead on understanding its ecological and biogeochemical implications. This shortfall is addressed here with a systematic, international and critical review of management and policy options. In particular, we investigate the assumption that fighting acidification is mainly, but not only, about reducing CO2 emissions, and explore the leeway that this emerging problem may open in old environmental issues. We review nine types of management responses, initially grouped under four categories: preventing ocean acidification; strengthening ecosystem resilience; adapting human activities; and repairing damages. Connecting and comparing options leads to classifying them, in a qualitative way, according to their potential and feasibility. While reducing CO2 emissions is confirmed as the key action that must be taken against acidification, some of the other options appear to have the potential to buy time, e.g. by relieving the pressure of other stressors, and help marine life face unavoidable acidification. Although the existing legal basis to take action shows few gaps, policy challenges are significant: tackling them will mean succeeding in various areas of environmental management where we failed to a large extent so far.

Integrated coastal management at the regional level: lessons from Toliary, Madagascar

Within the framework of the National Environment Action Plan in Madagascar, an integrated coastal management (ICM) program was launched in 1997. In accordance with international guidelines, the integration effort on the coastal zone concerns the local, regional, and national levels. The field study we conducted in Madagascar in 1999 and 2000 showed that the results achieved by this program vary significantly from one level of action to another. In particular, the ICM process seems to be more difficult to initiate at the regional level. This paper presents the observations leading to this diagnostic, and enlightens some fundamental mechanisms that can explain it. General recommendations are formulated in relation to this case study.

Concern-Focused Evaluation for Ambiguous and Conflicting Policies: An Approach From the Environmental Field

Environment and sustainable development show how policies are becoming ever more complex and ambiguous. This trend calls for new evaluation approaches. They need to be more clearly focused on specific, explicit concerns. They must be driven by a strategic concept of use to overcome the vulnerability to manipulation of many integrative, essentially procedural, approaches to policy making and evaluation. This article presents a conceptual framework for such evaluations and a four-step approach: defining the focal concern; developing criteria and synthesizing observations on the extent to which the focal concern is met; identifying and assessing all policies contributing to this outcome; and complementing this with the evaluation of policies specifically aimed at meeting the focal concern. Examples are taken essentially from wetland-related policies in France and Senegal. The article discusses how this approach tackles some crucial issues in evaluation research and practice and advocates closer connections between evaluation and critical research on policies.

Upscaling Payments for Environmental Services (PES): Critical Issues

The concept of payments for environmental services (PES) lends itself to an extremely diverse array of experimentations. At a time when PES are likely to be scaled up massively in certain parts of the tropics, notably in the context of REDD+, it is important to refine the scope of implementation of the instrument to avoid several perverse effects specific to PES and sustain its benefits over time. We analyze recent developments in PES based on a review of literature and emerging practices as we observe them in the field. Using various elements from the theory of economics, public action and environmental management, we flag five key aspects of PES that are often overlooked in most influential studies on PES: (1) the nature of the environmental service providers, (2) the actual efficiency gains of involving industrial and commercial actors, (3) the type of contractual obligations incumbent to the providers and duration of payments, (4) the potential macroeconomic effects of an upscaling of PES, and (5) the risk that PES undermine the consolidation of fragile states. If these elements are not properly addressed in the design of PES, this paper explains that the instrument risks delivering only ephemeral environmental results, while inducing a dangerous shift towards the ‘polluter-profits’ principle. Conversely, we explain how systematically going beyond monetary payments and integrating elements of technical support to encourage alternative productive activities is key to sustain PES benefits over time.

Sectoralization of an Integrated Coastal Management Programme: A Case Study in Madagascar

This paper focuses on integrated environmental management and shows why emphasis should be put on implementation issues. The authors take the example of integrated coastal management (ICM) and analyse a case study they recently conducted in Madagascar, where an ambitious ICM programme is being implemented. They explain a strong perverse mechanism called sectoralization, which appears to threaten many integration efforts and is a good example of what is at stake with the implementation of the integration concept. They conclude especially that integrated environmental management should not be considered as the only modern form of environmental action, and that a certain type of case study is now needed to analyse existing environmental management systems before designing integration programmes.

Bridging the Gap between Legal and Institutional Developments within Regional Seas Frameworks

AbstractThe last four decades have seen a considerable development of regional environmental law, especially within the United Nations Environment Programme’s Regional Seas Programme. However, implementation remains far from satisfactory. Among the enabling conditions that would favour more systematic implementation, appropriate institutional frameworks are key. It is therefore timely to examine the various ways in which institutional developments may keep up with legal progress. This article provides an international overview of institutional arrangements set up in various regional seas frameworks, and underlines common patterns as well as the variety of options experienced. It then sheds light on the Nairobi Convention framework as a typical case of a gap between legal and institutional developments. It draws on the worldwide review to explore a number of ways by which the institutional framework in the Western Indian Ocean region could be brought up to speed with the legal framework.

Mediterranean Tourism and Climate Change: Identifying Future Demand and Assessing Destinations’ Vulnerability

This chapter estimates the trends, impacts and responses of Mediterranean tourism, with special emphasis on coastal areas. It presents some part of the work done by two research lines (Economic impacts, Induced policies), namely scenarios for future tourism flows (regional and national scales) and a method for assessing vulnerability of local destinations.

Adaptation Strategies for the Mediterranean

Mediterranean countries have started implementing adaptation to climate change for a decade. This chapter aims to draw a panorama of this current adaptation effort in contrasted contexts of action – typically developed and developing countries. It identifies and discusses early developments of this endeavor, demonstrating its fragmentation and relative lack of ambition. It highlights current disconnections between practice and theory, and insists on the current minimal use of climate information in designing adaptation measures. It finally builds on the analysis of Mediterranean adaptation practices to provide guiding principles for the future elaboration of adaptation strategies in the region, focusing on timing, integration, and contextualization.

Ocean Solutions to Address Climate Change and Its Effects on Marine Ecosystems

The Paris Agreement target of limiting global surface warming to 1.5–2∘C compared to pre-industrial levels by 2100 will still heavily impact the ocean. While ambitious mitigation and adaptation are both needed, the ocean provides major opportunities for action to reduce climate change globally and its impacts on vital ecosystems and ecosystem services. A comprehensive and systematic assessment of 13 global- and local-scale, ocean-based measures was performed to help steer the development and implementation of technologies and actions toward a sustainable outcome. We show that (1) all measures have tradeoffs and multiple criteria must be used for a comprehensive assessment of their potential, (2) greatest benefit is derived by combining global and local solutions, some of which could be implemented or scaled-up immediately, (3) some measures are too uncertain to be recommended yet, (4) political consistency must be achieved through effective cross-scale governance mechanisms, (5) scientific effort must focus on effectiveness, co-benefits, disbenefits, and costs of poorly tested as well as new and emerging measures.