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| Registros recuperados: 48 | |
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| Bellanger, Manuel; Levrel, Harold. |
| The growth of marine recreational activities raises the issues of the current lack of knowledge on these activities and the information required to assess their potential impacts. Indeed, the monitoring of unrecorded activities is a great challenge, especially when basic information, such as the size of the population practicing the different activities, is unknown. In this paper, the experience of the monitoring of marine recreational fishing was used to carry out a diagnosis study to assess the cost-effectiveness of survey methods used in France between 2004 and 2012. Costs of alternative surveys were balanced with data quality, and particular attention was paid to potential biases. Results showed that the involvement of citizens through diary surveys... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00366/47769/47855.pdf |
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| Cabral, Pedro; Feger, Clement; Levrel, Harold; Chambolle, Melodie; Basque, Damien. |
| The quantification and integration of ecosystem services (ES) into urban planning decisions is becoming increasingly important. However, studies that quantify and analyze the impacts in terms of ES changes are still scarce. We analyzed multiple ES provided by the landscape of the Urban Community of Bordeaux (CUB), in France, between 1990 and 2006 as a result of land use and cover change (LUCC) with Corine Land Cover and other open data. These ES were selected with the help of local stakeholders and were calculated using a spatially explicit modeling approach with InVEST and own-produced models. It was found that all ES, except erosion regulation, have decreased as a consequence of LUCC. Results also suggest that LUCC change decisions which do not consider... |
| Tipo: Text |
Palavras-chave: Landscape services; Geographical information systems; Spatial planning; Land use and cover change; Corine land cover; Natural capital project. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00347/45847/45919.pdf |
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| Mongruel, Remi; Levrel, Harold; Bailly, Denis. |
| This short paper presents the approach which has been implemented in France for estimating the costs of ecosystem degradation in the context of the Marine Strategy Framework Directive (MSFD). Among the possible approaches, forgone benefits assessment or maintenance costs assessment, France decided to use the latter. The paper contains an introduction, a section which explains how to choose an economic approach coherent with the MSFD rationale, a section which exposes the methodology developed for implementing the approach, and a section on the main results. |
| Tipo: Text |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00412/52338/53125.pdf |
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| Levrel, Harold; Fontaine, B.; Henry, Pierre-yves; Jiguet, Frederic; Julliard, Romain; Kerbiriou, Christian; Couvet, Denis. |
| According to the Convention on Biological Diversity (CBD), states have to provide indicators in order to assess the performance of their initiatives for halting the loss of biodiversity. Sixteen headline indicators have been identified for monitoring the CBD targets. Of these indicators only one, "Trends in the abundance and distribution of selected species," is a direct headline indicator of "non-exploited" biodiversity. In France, the implementation of this indicator is completely dependent on data collected by volunteers. Since this investment of volunteer time is equivalent to savings in administrative costs, we attempt in this paper to assign it a monetary value. This enables us to estimate how much the French administration saves thanks to volunteer... |
| Tipo: Text |
Palavras-chave: Biodiversity monitoring; CBD indicators; Citizen science; Replacement cost. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00006/11694/8614.pdf |
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| Vaissiere, Anne-charlotte; Levrel, Harold; Pioch, Sylvain; Carlier, Antoine. |
| The European Union׳s energy policy aims to increase the proportion of energy derived from renewable sources in Europe. Marine renewable energy, offshore wind energy especially, contributes to the renewable energy mix. Offshore wind farms appear to be clean, and are supported by governments and NGOs as a way to reduce the use of conventional energy resources and thus decrease greenhouse gas emissions. However, developing infrastructure in marine areas can impact marine ecosystems. European directives ask offshore wind farm developers to carry out an Environmental Impact Assessment (EIA) including a mitigation hierarchy, i.e. envisaging measures that would avoid, reduce, and if possible offset significant adverse effects on ecosystems and human activities.... |
| Tipo: Text |
Palavras-chave: Mitigation hierarchy; Offshore wind farms; EIA. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00187/29834/28312.pdf |
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| Rocklin, Delphine; Levrel, Harold; Drogou, Mickael; Herfaut, Johanna; Veron, Gerard. |
| Fisheries statistics are known to be underestimated, since they are mainly based on information about commercial fisheries. However, various types of fishing activities exist and evaluating them is necessary for implementing effective management plans. This paper assesses the characteristics and catches of the French European sea bass recreational fishery along the Atlantic coasts, through the combination of large-scale telephone surveys and fishing diaries study. Our results demonstrated that half of the total catches (mainly small fish) were released at sea and that the mean length of a kept sea bass was 46.6 cm. We highlighted different patterns of fishing methods and type of gear used. Catches from boats were greater than from the shore, both in... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00177/28812/27293.pdf |
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| Levrel, Harold; Etienne, Monique; Kerbiriou, Christian; Le Page, Christophe; Rouan, Mathias. |
| For many conservation scientists, interdisciplinarity and participation can be efficient in the management of biodiversity. For both methods, new tools and new participative processes such as the so-called co-modeling process are required. The key questions addressed in this article are how group dynamics shape the model and why certain perspectives dominate in a process designed to be democratic. It is necessary, therefore, in order to appreciate the design and the legitimacy of the model that has been co-constructed, to address the questions of both the stakeholders' interests and their status in the process. Our case study is a co-modeling program based in a French biosphere reserve. It enabled us to highlight the key role of the mediator who had to... |
| Tipo: Text |
Palavras-chave: Power relationships; Participation; Multi agent system; Co modeling; Co adaptive management. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6153.pdf |
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| Levrel, Harold; Hay, Julien; Bas, Adeline; Gastineau, Pascal; Pioch, Sylvain. |
| The cost of ecosystem services degradation is a major topic as underlined by the TEEB program (The Economics of Ecosystems and Biodiversity), which proposed an assessment of the costs of policy inaction in the field of biodiversity conservation. In the same vein, the report of the French Centre for Strategic Analysis on the Economic Approach to Biodiversity and Ecosystem Services turns its attention to the value of ecosystem services, suggesting some elements that could help measure the cost of biodiversity degradation. There is however some confusion regarding the notion of cost. Thus, in the case of TEEB the proposed cost assessment translates into monetary terms the loss of potential profits from ecological services. Yet, another way of assessing these... |
| Tipo: Text |
Palavras-chave: Services écologiques; Biodiversité; Valeur; Coûts; Méthodes d’estimation; Ecosystem services; Biodiversity; Value; Costs; Assessmentmethodology. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00120/23115/20960.pdf |
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| Couvet, D.; Jiguet, F.; Julliard, R.; Levrel, Harold; Teyssedre, A.. |
| Citizen science, defined as participation of the general public in scientific research, could significantly help scientists to address biodiversity issues, through (i) monitoring the state of biodiversity, (ii) framing indicators which synthesise and communicate information on the state of biodiversity, (iii) building scenarios to evaluate the plausible consequences of different policies. A key asset of citizen science is that participating citizens disseminate the information they gain, thereby increasing the profile of issues being researched. We review further benefits associated with biodiversity monitoring, indicators and policy scenarios, envisioned as collaborative tools between scientists and citizens. Such collaboration promotes both the... |
| Tipo: Text |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6214.pdf |
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| Feuillette, Sarah; Levrel, Harold; Blanquart, Stéphanie; Gorin, Olivier; Monaco, Guillaume; Penisson, Bruno; Robichon, Stéphane. |
| In the context of the Water Framework Directive, the French Water Agencies were asked to justify exemptions, for disproportionate cost reasons, to the “good water” status in a series of river basins in 2015. The ministry of the Environment and the economists of the Water Agencies agreed on the fact that this justification would be based on cost-benefit analyses. A great number of cost-benefit analyses were carried out on water bodies or groups of water bodies. This article reports on this experience conducted by the French Water Agencies. It highlights the fact that the large majority of restoration projects generated higher costs than benefits. It suggests that the implementation of the Water Framework Directive could be considerably limited by the use of... |
| Tipo: Text |
Palavras-chave: Environnement; Dispositifs institutionnels; Eau; Évaluation économique; Coûts disproportionnés; Environment; Institutional systems; Water; Economic valuation; Disproportionate costs. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00480/59158/61787.pdf |
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| Herfaut, Johanna; Levrel, Harold; Thebaud, Olivier; Tranger, Hervé; Berthou, Patrick; Dintheer, Christian; Guyader, Olivier; Morizur, Yvon. |
| Between 2006 and 2008, Ifremer, in collaboration with the polling institute BVA, implemented a pilot survey of french recreational fisheries. The aim of the survey was to assess the overall population involved in this activity, taking into account the diversity of recreational fishing practices, from fish and shellfish gathering on the seashore to angling and spearfishing. The study was designed to provide first estimates of fishing effort, catches and landings, and economic impacts of recreational fishing. The protocol implemented was two-step. First, a telephone survey of french households, based on a sampling frame of the entire french population of people aged 15+, was carried out to assess the population of fishers and give a first general view of the... |
| Tipo: Text |
Palavras-chave: Recreational fishing; Survey methodology; Catch and effort assessment; Economic impact. |
| Ano: 2008 |
URL: https://archimer.ifremer.fr/doc/00502/61368/64984.pdf |
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| Registros recuperados: 48 | |
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