Designing Water Markets to Manage Coupled Externalities: An Application to Irrigation-Induced Salinity in Australia

In this paper, the design of water markets for the management of irrigation-induced salinity in Australia is addressed. Indeed, this setting exhibits complex interactions between the different features of the resource water. Quality, quantity of surface and ground-water interact in ways that produce coupled environmental externalities. It is then difficult to design efficient policy instruments to tackle all the issues at stake. This paper provides a preliminary analysis of three types of water market mechanisms, involving diversion rights and recharge rights.water markets, irrigation induced salinity, Australia, externalities, policy instruments, Resource /Energy Economics and Policy, Q25, Q53,

Foncier agricole, qualité de l’eau et intervention publique

Au travers d’une revue de littérature en sciences économiques, les auteures envisagent le recours à l’intervention foncière pour la reconquête de la qualité de l’eau. Elles mettent en évidence les différentes formes d’intervention publique ayant un effet sur le foncier et pouvant contribuer à l’amélioration de la qualité de l’eau. Les auteures reviennent sur les différentes stratégies de sélection des terres à préserver en priorité dans un contexte budgétaire contraint pour finalement souligner l’importance de la totalité des coûts liés à l’intervention foncière, qu’ils soient ex ante, ex post, directs ou indirects.Through a literature review in economics, the authors propose to consider land intervention to achieve water quality objectives. They bring to the fore public policies that impact land and that can be implemented to improve water quality. Then they detail land selection strategies that can be implemented when the budget is limited. Finally, they show how the consideration of all the costs of public intervention, whether ex ante, ex post, direct or indirect, is paramount in the design of public policy

Biologie de la reproduction d'une espèce menacée de l'île de La Réunion (Corymborkis corymbis: Orchidaceae) : implications pour sa conservation

La connaissance de la biologie de la reproduction est une étape essentielle dans la mise en place de projets de conservation des espèces menacées. L'étude de Corymborkis corymbis, espèce protégée de l'île de La Réunion, montre que cette espèce n'est représentée que par quelques populations sur l'île. Son taux de fécondité en milieu naturel, de l'ordre de 3 %, est extrêmement faible. L'étude de son système de compatibilité montre que l'espèce est partiellement autocompatible mais pas autofertile. Des perspectives d'études à réaliser sont proposées, ainsi que des stratégies de gestion de la conservation de cette espèce.The knowledge of the reproductive biology is an essential step in the building of conservation projects of endangered species . The protected Corymborkis corymbis in La Réunion island is only represented by few populations. lts fecundity in natural conditions is very low ( around 3 % ). The study of its breeding system shows that the species is partially self-compatible but not self-fertile. This paper proposes future studies as well as management strategies of the conservation of this species

Legislation and political discourse about ecological farming

The deliverable D6.1 of the LIFT project explores what types of discourses are used in six European Union (EU) member states’ Rural Development Programs (RDP) and other agricultural policy documents and how they incorporate ecological approaches acrossthree Common Agricultural Policy (CAP) periods. This multiple case study highlights similarities and differences in the dominant discourses as emerging from national policy documents in the following selected EU member states: France, Germany (Bavaria), Hungary, Poland, Romania and Sweden. It also demonstrates how discourse analysis can be used to gain understanding about the dominant discourses expressed in these documents in relation to how ecological approaches are defined, the policy rationale for encouraging ecological approaches and the expected consequences of doing so. Conceptually, we focused on two types of discourses identified from the literature: 1) the three CAP discourses: i) neomercantilism; ii) neoliberalism and iii) multifunctionality, and 2) the five socio-political discourses of Rural Development (RD): iv) agri-ruralist, v) hedonist, vi) utilitarian, vii) nature conservation and viii) community sustainability. These types of discourses were together integrated in a model, where each policy discourse depicts agriculture as accomplishing a specific function. The theoretical framework is grounded within a political economy perspective. This means that policy develops because of confrontation between different concerned agents with different interest, pushing for different objectives. The state acts as an intermediary between these agents and aims at ensuring consensus and maintenance of agreement. Policy documents are therefore often the result of competing discourses and contradicting policy objectives. Across EU member states, the results show that ecological approaches are mainly depicted with the multifunctionality discourse with two dominating sub-discourses of nature conservation and agri-ruralism. Nevertheless, we observe an increase in the use of the neomercantilist discourse in the last CAP period. This parallels what the previous literature finds in Commissioners’ speeches: a reappearance of the traditional neomercantilist discourse in the CAP agenda 2014-2020. Farming systems (with farming practices) related to agroecology, biodiversity-based and organic farming are among the most commonly mentioned farming systems

Creating Conditions for Harnessing the Potential of Transitions to Agroecology in Europe and Requirements for Policy

Food systems require reorientation to take greater account of interactions with the environment, economy, health and society. Transitions to agroecological farming practices and systems can connect policy areas and realise environmental, economic and social aims. These transitions provide a lens for reviewing policy, practice and behaviours of actors in farming systems and value chains, identification of barriers to uptake, and policy areas to which they contribute or where there are gaps. Developing social and human capital, and governance structures that enable transitions to agroecology are key to their prospects of success. Education and life-long learning are key to developing the knowledge and skills of younger generations of land managers and other actors in value chains, throughout their careers. The outcome sought is for a shared understanding of the benefits of agroecological practices and systems, creating opportunities to rebalance policies towards delivering climate neutrality, reversing biodiversity loss, and enhancing rights of citizens. To realise those opportunities policies and strategies should be coherent across territorial and systems levels, and tailored to place, system, people, and stages of transitions. Overall, they should be designed to ensure all citizens are beneficiaries of transitions to agroecological farming systems, over the long term, and that no-one or place is disadvantaged by the processes of change or the outcome intended.</p

Global perturbation of stratospheric water and aerosol burden by Hunga eruption

The eruption of the submarine Hunga volcano in January 2022 was associated with a powerful blast that injected volcanic material to altitudes up to 58 km. From a combination of various types of satellite and ground-based observations supported by transport modeling, we show evidence for an unprecedented increase in the global stratospheric water mass by 13% relative to climatological levels, and a 5-fold increase of stratospheric aerosol load, the highest in the last three decades. Owing to the extreme injection altitude, the volcanic plume circumnavigated the Earth in only 1 week and dispersed nearly pole-to-pole in three months. The unique nature and magnitude of the global stratospheric perturbation by the Hunga eruption ranks it among the most remarkable climatic events in the modern observation era, with a range of potential long-lasting repercussions for stratospheric composition and climate

Socio-economic impact of ecological agriculture at the territorial level

This deliverable investigates the socio-economic effects of ecological approaches to farming through implementing two participatory approaches, namely Delphi exercise and Q-method, at the level of a case study area (CSA). The focus is on how people and other productive assets are employed and remunerated by ecological approaches to agriculture, particularly those aspects that can influence employment, and drive the prosperity and vitality of local communities and some rural businesses. It is based on the collaborative research on Task 4.2 ‘Socio-economic impact of ecological agriculture at the territorial level’ of the LIFT project between UNIKENT (United Kingdom-UK) (Task Leader), BOKU (Austria), INRAE (France), VetAgro Sup (France), DEMETER (Greece), MTA KRTK (Hungary), UNIBO (Italy), IRWiR PAN (Poland), IAE-AR (Romania), SLU (Sweden), SRUC (UK). Beginning with the Delphi exercise, this deliverable presents qualitative information extracted from stakeholders in the following four steps. First, the researchers build a presentation of differences between ecological and conventional farming approaches in each CSA. Second, stakeholders elaborate on how they understand ecological farming approaches to exist in each CSA. Third, stakeholders develop a scenario of adoption of ecological approaches to farming depending on two factors: pattern (ecological farms forming clusters or randomly spread within the territory) and rate of adoption 10 years in the future. After establishing this scenario across two rounds, the stakeholders explore the socio-economic effects of their adoption scenario. The Q-methodology then presents a Q-set of statements that the Delphi has developed and, through factor analysis,studies the key stakeholder perspectives of the socio-economic effects of the perceived adoption of ecological practices in 10 years in the future. Four key results can be derived from the Delphi exercise and the Q-methodology. First, a higher adoption of ecological farming approaches, especially so at a 50% adoption rate, is mostly thought by stakeholders in the Delphi Exercise to lead to an increase in skill level and quality of life in on-farm employment. This is as a result of an increased diversity of farming enterprises on farms using ecological farming approaches, the interest generated from this, the knowledge of natural processes and biology required, engagement with nature and change in machinery that is coming into the industry. Strongly related to this need for skills is a predicted increase in the number of advisers and civil servants to deal with more complicated farms and incentives as well as monitoring of ecological effects on farm. An increase in required skill level is repeated across all Q-studies. Second, especially where farms are clustered together, Delphi Exercise respondents predict an increase in the trade of inputs such as manure and compost replacing synthetic fertiliser, as well as more sharing of capital and labour. Q-methodology highlights that these clusters may support a stronger social movement, more consumers buying local food and increase collaboration between farmers. Supply chains are expected to become shorter as farmers sell more directly and there are fewer intermediaries upstream of the farming sector. As farmers collaborate more with each other on environmental objectives, trading inputs and sharing best practices, farmer relationships should improve in rural communities. Third, Delphi exercise finds that contracting, machinery purchasers, and machinery traders and dealers could increase, decrease or display no change – the anticipated effects are mixed. Stakeholders are in no doubt that machinery use will change and therefore new skills will need to be learnt, but the wider effect on machinery purchase is uncertain. However, stakeholders conclude that a greater specialisation in machinery will occur leading to changes in farm management as well as the suppliers of this machinery. Q-methodology highlights that ecological practices will not mean the end of machinery and a lot more labour – often machinery will be useful in weeding and reducing physical labour as technology has significantly improved and skills are improving too in order to use these technologies. Fourth, Delphi respondents argued that although rural populations might be little affected by ecological farming, a shift in people moving from urban to rural settlements, and thereby a higher rural population density, seeking a more attractive rural environment, might contribute to higher local consumer demand. The Q-methodology highlights that where there is high adoption, rural areas are expected to become more attractive, as landscapes will have a much greater variety of crops instead of fields of monocrops. This variety of crops may include agroforestry (farmers interested in ecological approaches to farming may also be interested in agroforestry as a way of boosting their yields and protecting crops and livestock from the elements) as well as intercropping

Creating Conditions for Harnessing the Potential of Transitions to Agroecology in Europe and Requirements for Policy

Food systems require reorientation to take greater account of interactions with the environment, economy, health and society. Transitions to agroecological farming practices and systems can connect policy areas and realise environmental, economic and social aims. These transitions provide a lens for reviewing policy, practice and behaviours of actors in farming systems and value chains, identification of barriers to uptake, and policy areas to which they contribute or where there are gaps. Developing social and human capital, and governance structures that enable transitions to agroecology are key to their prospects of success. Education and life-long learning are key to developing the knowledge and skills of younger generations of land managers and other actors in value chains, throughout their careers. The outcome sought is for a shared understanding of the benefits of agroecological practices and systems, creating opportunities to rebalance policies towards delivering climate neutrality, reversing biodiversity loss, and enhancing rights of citizens. To realise those opportunities policies and strategies should be coherent across territorial and systems levels, and tailored to place, system, people, and stages of transitions. Overall, they should be designed to ensure all citizens are beneficiaries of transitions to agroecological farming systems, over the long term, and that no-one or place is disadvantaged by the processes of change or the outcome intended

Incomplete model specification in a multi-pollutants setting : the case of climate change and acidification

JEL classification : Q53; Q54; Q58International audienceThis paper analyses the consequences of incomplete environmental model specification on policy design in a multi-pollutants framework. Focusing on the correlations between aerosols and greenhouse gases, the paper compares abatement and stock targets setting for various cases of incomplete model specification. Both cases of lax and stringent regulation, compared to what is socially optimum, may arise. Furthermore, the lax/stringent nature of the policies may evolve over time, so that the time horizon of policy design matters in assessing the impact of incomplete model specification