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Introduction
Associate professor in agronomy at Agrocampus Ouest, France.
Working on agronomy and agri-environmental assessment at the farm and landscape scales.
Additional affiliations
Publications
Publications (44)
CONTEXT
Pollution of water resources by substances emitted by agriculture, such as nitrate, pesticides, pharmaceutical residues, fecal microorganisms and microplastics, remains a crucial issue. To assess the effectiveness of pollution-mitigation projects, water quality is usually monitored at the watershed scale. In parallel, farmers and agricultur...
CONTEXT: Reconnecting crop and livestock production beyond the farm gate by exchanging raw materials (e.g., feed, manure) between farms is seen as a promising solution for improving the environmental performance of farms, since it should reduce the use of imported nitrogen (N) inputs. However, such a circular economy does not necessarily lead to a...
Background
Extreme rainfall and flooding events are projected to increase in frequency and disturb biogeochemi-cal cycles such as the nitrogen (N) cycle. By combining trees and grasses, silvopastoral agroforestry is expected to increase the stability of this cycle in response to flooding. However, little is known about the response of nitrifica-tio...
Background and aims
Agroforestry, whereby trees are associated with crops and/or livestock, is expected to mitigate nitrogen (N) losses from agriculture. However , little is known about how nitrification potential, an important process that drives N losses, is affected by agroforestry systems. This study aimed to investigate the effect of different...
Améliorer la valorisation de l’azote à toutes les étapes de son utilisation est une priorité, notamment en élevage où elle demeure relativement faible. Les indicateurs d’efficience azotée sont nombreux et basés sur des méthodes de calculs diverses selon le contexte et les échelles considérées. La littérature illustre un certain nombre de pratiques...
Biodiversity-based cropping systems are an interesting option to address the many challenges that agriculture faces. However, benefits of these systems should not obscure the fact that creating biodiversity-based cropping systems represents a major change for farmers. To address this challenge, we argue that designing biodiversity-based cropping sy...
Pour favoriser l'apprentissage de l'agroécologie, le jeu sérieux SEGAE (SErious Game for AgroEcology) a été construit. Ce jeu de simulation en ligne représente une ferme de polyculture-élevage dans laquelle le joueur (par exemple, un étudiant en formation agricole) peut mettre en œuvre des pratiques agroécologiques puis en analyser les impacts en t...
This article presents data designed by European researchers who performed a literature review and interpreted the results to determine impact factors of many agroecological practices on a wide variety of sustainability indicators. The impact factors are represented in a matrix that connects practices to indicators. The indicators are related to env...
CONTEXT
There is growing evidence that agroecology can reconcile the environmental, economic, and social pillars of agricultural sustainability. However, teaching and learning agroecology is challenging, especially since most agricultural graduate programs in Europe are not adapted to teach the diversity of its related practices.
OBJECTIVE
To impr...
Territorial Life Cycle Assessment (TLCA) appears a promising method to support informed decision making of local actors in territorial agricultural production systems (TAPS), by assessing environmental impacts of agricultural activities and potential strategies. The objectives of this study were to i) adapt TLCA methodology to integrated environmen...
Dominant agricultural systems contribute to environmental degradations such as the reduction of biodiversity, the simplification of landscapes, the contamination of water, the emission of greenhouse gases or the decline in soil quality. Crop diversification can contribute to alleviate these impacts. Increasing plant diversity is possible through ma...
European agriculture is facing many challenges and agroecology is considered as a pertinent option to reconcile the various pillars of agricultural sustainability. To promote its application, agroecological concepts should be taught to students and professionals in the agricultural sector. However, most agricultural courses are not adapted to teach...
Agroecology represents a pertinent option to improve the sustainability of agriculture. To promote its application, agroecological concepts should be taught to students and professionals in the agricultural sector. However, most agricultural courses are not adapted to teach these concepts due to little interactivity or interdisciplinarity, and a la...
Les pertes d’azote ont des impacts majeurs sur l’environnement et la santé humaine. L’amélioration de l’efficience d’utilisation de l’azote et la réduction de l’excédent du bilan azoté sont des priorités pour l’agriculture. Nous proposons de nouveaux indicateurs plus pertinents que ceux existants afin d’évaluer les systèmes de production sur leur c...
Nitrogen (N) indicators are key for characterizing farm performance, because of the role of N in food production and environmental sustainability. A systematic monitoring of N balance at the farm level could contribute to understanding differences in N management and impacts among farms and among regions. The objective of this study was to increase...
In the European Union (EU), local production of protein crops (faba bean, field pea, lupins) is of primary interest to help farmers depend less on purchased feed, provide agronomic benefits to cropping systems, and increase the EU’s protein self-sufficiency. Nonetheless, farmers rarely grow protein crops, which currently represent less than 1% of t...
Afin de développer une agriculture plus respectueuse de l'environnement, et capable de nourrir la population, les interactions entre le sol et les plantes sont un levier prometteur. En effet, les plantes sont capables de modifier profondément leur environnement racinaire, la rhizosphère, soit directement soit indirectement en établissant des liens...
This poster describes the SEGAE project, which goal is to produce a farming simulation game to learn agroecology and systems thinking.
SEGAE est un jeu de simulation agricole en ligne. Le joueur est à la tête
d’une exploitation de polyculture élevage laitier conventionnelle qu’il doit
rendre plus durable. A travers ce jeu, les objectifs pédagogiques sont :
- d'évaluer les effets de combinaisons de pratiques sur le système d'exploitation => approche système, pluridisciplinarité ;...
The main challenge of European agriculture is to provide food in sufficient quantity and quality while reducing its pressure on the environment. Agroecology seems a very relevant option to meet this challenge. The agroecological transition requires farmers, farm advisors and other agricultural professionals to have a holistic understanding of farmi...
While nitrogen (N) management has improved significantly on livestock farms, with positive consequences for nitrate concentrations in surface waters (Manneville et al., 2017), the French dairy farming sector must continue its efforts. At the same time, dairy farmers have to cope with market developments (increased milk demand), price volatility and...
This paper presents data collected from 38 integrated crop-livestock farming systems in Ille-et-Vilaine, Brittany, France, during face-to-face surveys. Surveys were conducted using a quantitative questionnaire to collect information about farm management practices that affect nitrogen (N) inputs, N outputs, and internal N flows. The data were used...
Reactive nitrogen (N) is a key agricultural input, essential for crop growth and production, but excess N in the environment causes problems for human and ecological health. One of the most promising solutions for reducing environmental impacts of excess N levels and feeding a growing population is to improve N efficiency of farming systems i.e., i...
The SEGAE project (SErious Game in AgroEcology) is aimed at developing a computer game for students and professionnals, in order to help them reach a systemic and multidisciplinary vision of agroecological farming.
Improving nitrogen (N) efficiency is a priority for increasing food production while reducing its environmental impacts. N efficiency indicators are needed to achieve this goal, but current indicators have some limitations. In particular , current N efficiency indicators are not appropriate tools to compare farming systems with different types of p...
L’amélioration de l’efficience de l’azote en agriculture est une piste prometteuse pour répondre aux besoins d’une population croissante en réduisant ses impacts environnementaux. L’identification des solutions adaptées à l’atteinte de cet objectif requiert l’utilisation d’indicateurs. Cependant, l’indicateur existant, Nitrogen Use Efficiency (NUE)...
The improvement of nitrogen (N) efficiency is a major way to enhance the productivity and reduce the environmental impacts of farming systems. Nitrogen Use Efficiency (NUE) is the most widely used indicator to assess N efficiency in farming systems, but presents several limitations. Importantly, it does not allow comparing farms with different crop...
Reactive nitrogen (N) flows (all forms of N except N2) are greatly increasing worldwide. This is mainly due to the ever larger use of inorganic N fertilizers used to sustain the growing food production. N flows have major impacts on water, air and soil quality as well as on biodiversity and human health. Reconciling the objectives of feeding the wo...
Ecosystem modeling is a current challenge that interests fisheries scientists around the world. A preliminary model of the warm pool pelagic ecosystem was designed for the secretariat of the Pacific Community, using Ecopath with Ecosim. The present work details some improvements made to this preliminary model. Splitting the piscivorous fish group i...
We constructed a pelagic ecosystem model of the Western tropical Pacific Ocean using Ecopath with Ecosim software. The model is composed of 16 functional groups: detritus, five plankton and micronekton groups and 10 fish groups. Biomass, production rate, consumption rate, diet composition and fisheries catch were the specified inputs for each defin...
Poster presented at the joint World Aquaculture Society and European Aquaculture Society conference