Bertrand Villeneuve

Bertrand Villeneuve
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · AQUA

PhD

About

39
Publications
7,876
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771
Citations
Citations since 2017
16 Research Items
511 Citations
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2017201820192020202120222023020406080100
2017201820192020202120222023020406080100

Publications

Publications (39)
Poster
Full-text available
Estuaries and intertidal mudflats are commonly used by young fishes due to their high productivity, associated with high food availability. In order to evaluate the contribution of these areas to the growth and survival of mullet larvae, sampling was carried out in these different habitats located in the Gironde estuary. For this purpose, golden mu...
Article
In situ bioassays are used to measure the harmful effects induced by mixtures of toxic chemicals in watercourses. In France, national-scale biomonitoring data are available including invertebrate surveys and in-field chemical toxicity measures with caged gammarids to assess environmental toxicity of mixtures of chemicals. The main objective of our...
Poster
Full-text available
Estuaries are complex and highly productive ecosystems associated with many ecological functions and ecosystem services. These transition areas provide diverse niches to fish species with a variety of life history strategies. Early life stages of fishes (i.e. eggs and larvae) are particularly vulnerable with mortality rates of up to 99% recorded fo...
Article
Full-text available
While it is recognized that biodiversity currently declines at a global scale, we still have an incomplete understanding of local biodiversity trends under global change. To address this deficiency, we examined the recent decadal trends in water quality and biodiversity (taxonomic and functional) of key river organisms (diatoms, macroinvertebrates...
Article
Full-text available
es réseaux de surveillance des milieux aqua-tiques ont historiquement été construits sur une logique d'évaluation de la qualité chimique des eaux. Il s'agissait notamment de voir en quoi les efforts de dépollution se traduisaient par une amélioration de cette qualité. À l'instar de réseaux mis en place par exemple aux États-Unis (Carlisle et Hawkin...
Article
Full-text available
Pour des raisons techniques et économiques, toutes les masses d’eau européennes ne bénéficient pas d’un suivi direct de leur qualité établi à partir d’une collecte régulière de données biologiques. En France, cela représente environ dix mille sites. Pour combler ces lacunes, des chercheurs d’INRAE ont mis au point un ensemble de modèles capables de...
Article
Full-text available
Avec le soutien de l’Office Français de la Biodiversité et des Agences de l’Eau, la biosurveillance active via l’utilisation de l’amphipode Gammarus fossarum a été développée pour répondre, entre autres, aux attentes et exigences de la directive cadre sur l’eau (DCE) en termes de suivi de la contamination chimique des cours d’eau continentaux. L’ut...
Article
Full-text available
Avec le soutien de l’Office français de la biodiversité et des Agences de l’eau, les équipes d’écotoxicologie et de chimie d’INRAE ont développé une méthode de biosurveillance active de la contamination chimique des cours d’eau à l’aide d’une espèce de crustacé sentinelle, Gammarus fossarum. Au-delà d’évaluer la conformité des cours d’eau vis-à-vis...
Article
Aquatic ecosystems are exposed to multiple environmental pressures including chemical contamination. Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) are persistent organic pollutants (POPs) known as preoccupying substances for the environment. Active biomonitoring (ABM) is a surveillance method for polluted aquatic ecos...
Book
Full-text available
Since 2004, Irstea, the French research institute of science and technology for environment and agriculture was deeply involved for the developpement of research programs aiming to build the toolbox necessary for the implementation of the European Water framework directive in France. This book presents a synthesis of all these programs, explaining...
Article
Full-text available
Most key life-events of organisms are synchronized by complex interactions of several environmental cues to ensure optimal survival and growth of individuals and their offspring. However, global change is known to affect multiple components of ecosystems and cues at the same time. Therefore, detecting joint trends in covariate time series is a cruc...
Article
Active biomonitoring permits the quantification of biological exposure to chemicals through measurements of bioavailable concentrations in biota and biological markers of toxicity in organisms. It enables respective comparison of the levels of contamination between sites and sampling campaigns. Caged gammarids are recently proposed as relevant prob...
Article
Full-text available
Most of anthropogenic stressors affecting freshwater systems are qualitatively known. But the quantitative assessment of contaminant exposure and effects to aquatic communities is still difficult, limiting the understanding of consequences on aquatic ecosystem functioning and the implementation of effective management plans. Here, multi-substance i...
Article
Full-text available
We investigated the relationships between the ecological status of wadeable rivers and the intensity of various stressors related with hydromorphological alterations, nutrient, and organic matter contaminations. The French invertebrate-based multimetric index (I2M2), which efficiently responds to the effects of both physical and chemical and hydrom...
Thesis
Full-text available
Les cours d’eau et leurs bassins versants sont des systèmes complexes et en équilibre dynamique. Si l’on connait qualitativement assez bien la plupart des processus dont ils sont le siège (ex. transport de matière organique et de sédiments, transformation des litières, etc…), il est beaucoup plus difficile d’en avoir une représentation pertinente à...
Article
Full-text available
Rivers are complex systems for which it is hard to make reliable assessments of causes and responses to impairments. We present a holistic risk-based framework for river ecosystem assessment integrating all potential intervening processes and functions. Risk approaches allow us to deal with uncertainty both in the construction of indicators for mag...
Article
Recent progress in very high spatial resolution imagery (VHSRI) has increased the availability of fine-scale land cover data over extensive areas. This new spatial information might improve our understanding of how land cover affects stream ecosystems.Land cover information was investigated in whole catchments and riparian areas in Normandy (France...
Article
Full-text available
Claimed benefits of riparian forest cover for the aquatic ecosystem include purification, thermal control, organic matter input and habitat provision, which may improve physicochemical and biotic quality. However, these beneficial effects might be flawed by multiple stressor conditions of intensive agriculture and urbanization in upstream catchment...
Book
This chapter emphasizes the role of riparian vegetation in regulating and protecting river ecological integrity, based on a study of a river catchment (25 000 km²; 6000 km river network) located in the North of France. Restoring riparian vegetation is supposed to enhance the river ecosystem integrity and its ecosystem services. To reveal this relat...
Article
Full-text available
Accurate mapping of land-cover diversity within riparian areas at a regional scale is a major challenge for better understanding the influence of riparian landscapes and related natural and anthropogenic pressures on river ecological status. As the structure (composition and spatial organization) of riparian area land cover (RALC) is generally not...
Book
National monitoring networks cannot be used to assess the status of all water bodies, as they were usually not explicitely designed for that purpose. Consequently, another approach than direct monitoring is needed to assess the status of water bodies which are not surveyed. A solution has previously been attempted that consisted in using expert jud...
Article
The aim of this paper is to demonstrate the interest of High Spatial Resolution Imagery (HSRI) and the limits of coarse land cover data such as CORINE Land Cover (CLC), for the accurate characterization of land cover structure along river corridors and of its functional links with freshwater ecological status on a large scale. For this purpose, we...
Article
Full-text available
Preservation and restoration of river ecosystems require an improved understanding of the mechanisms through which they are influenced by landscape at multiple spatial scales and particularly at river corridor scale considering the role of riparian vegetation for regulating and protecting river ecological status and the relevance of this specific a...
Article
Full-text available
A method using remote sensing and large-scale statistical models was developed to assess the influence of riparian land use on river ecological status. It was implemented over the 6000 km long Normandie river network (France). First a detailed fine scale map of Riparian Area Land Cover (RALC) was produced from very high spatial resolution imagery....
Article
Summary1. The main objectives of our study were (i) to establish the relative impact of pressures that degrade ecological status, especially those caused by agriculture and urbanisation, (ii) to identify regional patterns in these pressure-impact relationships and (iii) to evaluate the relative weight of the pressures acting at the basin and ripari...
Article
Among the numerous PCB congeners, most of the dioxin-like PCBs (DL-PCBs) need to be characterized by hyphenated techniques. It has been shown in several instances that these congeners are well related to the total PCB content in fish. We examined datasets collected mainly in France, on freshwater and marine fish and sediments. A statistical model l...
Article
Full-text available
Spatio-temporal variability of the physical conditions in streams is known to influence freshwater population dynamics. However, the complex relationship between these physical factors (mainly available habitat, water temperature, discharge, sediment transport) and the biological response is not yet clearly understood in either natural or regulated...
Technical Report
Full-text available
LOT 2.1 : Etude des relations entre les variables d’environnement et les invertébrés benthiques à l’échelle du fleuve, 1985-2004 LOT 2.2 : Etude des relations entre les variables d’environnement et les peuplements piscicoles à l’échelle du fleuve Lot 2.2.1 : Synthèse des suivis piscicoles des sites rhodaniens, 1984-2004 Lot 2.2.2 : La variabilit...
Technical Report
Full-text available
Étude des différences écologiques entre la rive échauffée par les rejets thermiques des centrales nucléaires de production électrique et la rive opposée non soumise au rejet.
Article
Full-text available
La mise en ½uvre de la Directive-cadre européenne sur l'eau implique le développement de modèles pressions/impacts permettant d'identifier les actions nécessaires à la restauration. Nous avons développé des modèles « large échelle », reliant l'indice invertébré aquatique (IBGN) à l'occupation du sol du bassin versant. La méthode des arbres de décis...

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Projects

Projects (5)
Project
This project aims to describe the dispersal and settlement mechanisms of fish larvae and post-larvae in the estuaries of the Seine and Gironde. The identification of areas playing an essential functional role for the settlement of larvae is of major interest for the implementation of conservation or restoration measures. The achievement of these objectives requires the development of complementary methodological approaches (in situ sampling, dispersion modeling, analysis of the energetic condition) at different spatial scales in order to finely appreciate the influence of estuarine habitats on the settlement and growth of young fish stages.
Project
This project proposes to take into account knowledge about the nested spatial scales of a stream in a structural analysis of the links between pressures and ecological status.