WorldCat Identities

Devin, Simon

Overview
Works: 17 works in 18 publications in 2 languages and 24 library holdings
Roles: Author, Other, Thesis advisor, Opponent
Publication Timeline
.
Most widely held works by Simon Devin
Effects of increasing temperatures on biomarker responses and accumulation of hazardous substances in rope mussels (Mytilus galloprovincialis) from Bizerte lagoon by Naouel Kamel( )

1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

Les invasions biologiques des milieux d'eau douce : analyse du rôle des traits biologiques et écologiques d'un nouvel envahisseur (Dikerogammarus villosus, Gammaridae, Crustacea) dans le processus invasif by Simon Devin( Book )

2 editions published between 2003 and 2006 in French and held by 2 WorldCat member libraries worldwide

The Moselle River, owing to its geographic localization, is connected to the main European waterways, generating regular establishment of new exotic species. A recent invader (Dikerogammarus villosus, Amphipoda, Crustacea) was used as a model for our study. We defined and analysed its biological and ecological traits, and evidenced a pool of characteristics that could have enhanced D. villosus invasiveness. Such characteristics are also frequently presented in the literature as shared by invasive Gammaridae. In order to check this hypothesis, and to define whether those traits are common or specific to invaders, a comparison of bio/ecological traits of invasive and non-invasive gammarid species was performed, that revealed the importance of ecological traits, allowing a species to go through the first steps of the invasion process. Moreover, we have shown that invasive gammarids generallly originate from biogeographic areas where this group is highly diversified. Finallly, the study of macroinvertebrate communities in the Moselle River showed an increase of the functional diversity between 1994-2001, with nevertheless a trend to the homogenisation
Patterns of Biological Invasions in French Freshwater Systems by Non-Indigenous Macroinvertebrates by Simon Devin( )

1 edition published in 2005 in English and held by 2 WorldCat member libraries worldwide

Differential tolerance to nickel between Dreissena polymorpha and Dreissena rostriformis bugensis populations by Marine Potet( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Geographic patterns in freshwater gammarid invasions: an analysis at the pan-European scale by Simon Devin( )

1 edition published in 2008 in English and held by 2 WorldCat member libraries worldwide

Changes in functional biodiversity in an invaded freshwater ecosystem: the Moselle River by Simon Devin( )

1 edition published in 2005 in English and held by 2 WorldCat member libraries worldwide

Corbicula fluminea gene expression modulated by CeO2 nanomaterials and salinity by Vanessa Koehlé-Divo( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Outils de diagnose structurelle et fonctionnelle pour la bioévaluation de la qualité des sédiments associés à la présence de barrages. Approche intégrée de la population au processus écosystémique by Fanny Colas( )

1 edition published in 2012 in French and held by 1 WorldCat member library worldwide

Sediment evaluation and monitoring is an essential part of ecosystem monitoring since sediments represent an important component of aquatic habitats and are also a potential source of contamination. Current methodologies of their ecotoxic risk assessment do not encompass ecosystemic responses and do not take into account multiple abiotic and biotic stressors. Run-of-river reservoirs entrap a large amount of sediments and constitute an opportunity to develop original risk assessment methodologies that integrate biological responses in situ and their potential effects for river ecosystem functioning. Six run-of-river reservoirs were selected to study the effects of sediment contamination at several spatial and biological scales, thanks to structural and functional approaches. Our results evidenced a selection in faunistic assemblages in response to contamination, associated with low taxonomic and functional diversity. Our results also evidenced sublethal responses, with niches shifts of invertebrate population and modification of biotic interactions. Sediment contamination has also impacted metabolic functional diversity of bacterial communities and fungal richness and biomass. These biocenotic alterations have resulted in disturbances in ecosystemic processes such as leaf breakdown and benthic flux at the water-sediment interface. Ecosystems downstream dams were also impacted, through resuspension of contaminated sediments, alteration of water quality and cascading effects related to structural and functional responses of reservoirs communities. Our findings evidenced challenges of the sediment quality preservation and the need to develop risk assessment methodologies based on the vulnerability at each biological scale in order to understand and elucidate ecological status and trajectories of aquatic ecosystems
Indicateurs populationnels de pollution : marqueurs comportementaux chez des crustacés d'eau douce face à un stress métallique by Pascal Sornom( )

1 edition published in 2012 in French and held by 1 WorldCat member library worldwide

Organisms responses to various environmental disturbances are commonly used as biomarkers in the assessment of environmental quality. However, these responses are modulated by many factors and provide different information depending on their precocity, their relevance, specificity and complexity. In this context, we chose to study a set of behavioural responses in various species of freshwater crustaceans of ecotoxicological interest. To achieve this goal, we investigated the effects of biotic (i.e. predation risk) and/or abiotic stress (i.e. metal contamination) on behaviours of high ecological relevance, including some confounding factors (i.e. gender and individual length). In laboratory experiments, we studied the effects of: (i) a sediment contamination on the substrate avoidance in the decapod Astacus Astacus, the isopod Asellus Aquaticus and the amphipods gammarus pulex, gammarus roeseli and dikerogammarus villosus, (ii) a high predation risk on antipredator strategies in G. Pulex, G. Roeseli and D. Villosus, (iii) a high predation risk and a contamination of water by cadmium on antipredator strategies, cell damages and energy reserves in G. Roeseli and D. Villosus, and (iv) a contamination of water by cadmium on the precopulatory behaviour in D. Villosus. We have highlighted a strong interspecies variability and small differences depending on gender. The impact of cadmium was significant on the tested responses. Overall, this study emphasizes the importance of behaviours, which can be considered as early warning signals and as relevant tools with high ecological relevance, in the assessment of stress effects and environmental quality
Capacités d'adaptation des populations naturelles à la contamination des milieux aquatiques : cas d'étude du cadmium chez le crustacé Gammarus fossarum by Amandine Vigneron( )

1 edition published in 2015 in French and held by 1 WorldCat member library worldwide

Because they lead to changes in toxicological sensitivities and life history traits within field populations, evolutionary processes supporting adaptation to contamination challenge the relevance of environmental risk assessment of chemical contaminants. Hence their study becomes an important developing field of research in ecotoxicology. Focusing on the study of adaptive capacity of the freshwater amphipod Gammarus fossarum, this work aimed to gain insight into the effects of long term exposure to cadmium at the population scale in the field. By means of biomonitoring methodologies (caging), population demographic sampling, culture and exposure in the laboratory we identified a phenomenon of increased tolerance and modification of life history traits in a natural population historically exposed to cadmium. Quantitative genetics experiments conducted on three populations secondly demonstrated (1) a low heritability of sensitivity to cadmium in naïve populations ; and (2) a major role of parental effects induced by exposure as populational mechanism supporting the development of tolerance in this species. Finally, the characterization of the variability of cadmium sensitivity in the genus Gammarus (seventeen populations), and the analysis of the divergence of the tolerant population in comparison to this variability led us to discuss about the implications of these evolutionary processes induced by environmental exposure for risk assessment of chemicals. Thus, from these results it appears necessary to take into account adaptive responses induced by environmental contamination as a source of variability and uncertainty in order to provide a relevant risk assessment fully integrating all the impacts of environmental contamination on natural populations
Silver nanoparticles impact the functional role of Gammarus roeseli (Crustacea Amphipoda)( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Integrated multi-biomarker responses in two dreissenid species following metal and thermal cross-stress( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Abstract: With current global changes, the combination of several stressors such as temperature and contaminants may impact species distribution and ecosystem functioning. In this study, we evaluated the combined impact of two metals (Ni and Cr) with a thermal stress (from 12 to 17°C) on biomarker responses in two bivalves, Dreissena rostriformis bugensis and Dreissena polymorpha . Biomarkers are informative tools to evaluate exposure and effects of stressors on organisms. The set of 14 biomarkers measured here was representative of both physiologic (filtration activity) and cellular antioxidant and detoxification mechanisms. Our aim was to study the response pattern of both species, and its meaning in terms of invasive potential. The implications for the use of these mussels in environmental monitoring are also discussed. Results evidenced that the two species do not respond to multiple stressors in the same way. Indeed, the effects of contamination on biomarker responses were more marked for D.polymorpha, especially under nickel exposure. While we cannot conclude as to the effect of temperature, invasiveness could be influenced by species sensitivity to contaminants. The physiological and cellular differences between D.polymorpha and D.r. bugensis might also be of concern for environmental risk assessment. The two species present differential bioaccumulation patterns, filtration activity and cellular biomarker responses. If D.polymorpha populations decline, their substitution by D.r. bugensis for biomonitoring or laboratory studies will not be possible without a deeper understanding of biomarker responses of the new invasive. Graphical abstract: Highlights: Dreissena polymorpha is replaced by Dreissena rostriformis bugensis in freshwaters. Both organisms can be used for biomonitoring. Fourteen biomarkers were measured in a multi-stress experiment. Biomarker levels were higher in D.polymorpha . Both species exhibited similar patterns in response to stresses. Abstract : Two dreissenid species were exposed to a metal and thermal cross-stress, and both species exhibited a similar response pattern, even if biomarker levels were higher for one of them
Les Terres Rares : exposition et bioaccumulation chez deux espèces clés de l'écosystème estuarien ligérien, l'anguille européenne et le flet commun by Marjorie Lortholarie( )

1 edition published in 2021 in French and held by 1 WorldCat member library worldwide

The Rare Earths Elements (REEs) are a group of 17 metallic elements used in many industrial and medical applications. For several years, their use has been expanding rapidly, leading to numerous enrichments in aquatic ecosystems. This thesis focused on studying these emerging contaminants in the Loire estuary, which represent an area marked by a strong anthropogenic pressure which can be a source of REEs. For the first time, the REE concentration of the abiotic compartment was characterized as a whole : sediment and water column (dissolved and particulate phases). The study of bioaccumulation in muscle of two benthic fish species, the European eel (Anguilla anguilla) and the common flounder (Platlchthys flesus), highlighted intraspecific and interspecific variations.In addition, REE quantification in different organs and tissues allowed their organotropism determination in eels. A particularly marked bioaccumulation of gadolinium in the gonads of female silver eels has thus been demonstrated. Finally, the spatiotemporal study of the bioaccumulation of REEs in eel muscles showed a slight spatial variation but a significant temporal increase between 2011/2012 and 2018/2019. This temporal variation was not observed in sediments collected at the same time periods. The sentinel species status of the eel is thus underlined, since it seems to be particularly suitable for monitoring the evolution of REE contamination in dynamic environments, such as estuaries, influenced by current and tides
Modélisation de distribution de sensibilité des espèces pour la protection des communautés by Vincent Baillard( )

1 edition published in 2021 in French and held by 1 WorldCat member library worldwide

Les activités humaines ont de nombreux effets sur les écosystèmes. Elles peuvent se traduire par exemple par le déversement ou la fuite de contaminants dans les écosystèmes, comme lors de l'épandage de pesticides dans une zone agricole. L'évaluation du risque environnemental permet de caractériser et de quantifier ces effets afin de les maintenir à un niveau considéré acceptable. Cette évaluation se fait le plus souvent à partir de bioessais monospécifiques, mais les relations concentration-réponse ainsi décrites peuvent ensuite être intégrées au sein d'une distribution de sensibilité des espèces (ou SSD pour Species Sensitivity Distribution). Ces SSD, largement utilisées en évaluation du risque environnemental, permettent alors de définir une concentration n'ayant d'effets que sur une petite fraction des espèces présentes dans un écosystème (le plus souvent 5% donnant ainsi des concentrations dangereuses pour 5% des espèces). L'un des problèmes importants de ce type d'approches reste cependant une représentativité environnementale encore limitée. En effet, les bioessais monospécifiques fournissant l'information de base pour produire ces SSD sont le plus souvent réalisés dans des conditions non réalistes (organismes isolés et donc non soumis aux interactions biotiques, conditions expérimentales éloignées de la réalité environnementale, obtention d'une valeur de sensibilité unique pour une espèce alors que cette sensibilité peut être variable d'une population à l'autre...). Ce manque de réalisme est compensé par l'application d'un facteur de sécurité venant diviser la valeur finale par une valeur d'autant plus grande que l'estimation réalisée est éloignée de la réalité environnementale, donnant ainsi des valeurs d'autant plus basses et donc considérées plus protectrices. Les travaux présentés ici ont cherché à intégrer (i) l'effet de la variabilité intraspécifique sur les paramètres des courbes SSD, et notamment la concentration dangereuse pour 5% des espèces et (ii) l'effet combiné d'un herbicide et de la compétition interspécifique sur les communautés végétales des bandes enherbées, en adoptant plusieurs démarches de modélisation, à chaque étape du processus d'analyse de données. Les résultats mettent en évidence l'importance d'intégrer toute cette complexité biologique dans les démarches d'évaluation du risque environnemental, ainsi que le risque de sous-estimation des facteurs de sécurité généralement appliqués sur les résultats issus d'une modélisation SSD
De l'acclimatation à l'adaptation : mécanismes évolutifs, conséquences populationnelles et implication en biosurveillance by Marine Potet( )

1 edition published in 2017 in French and held by 1 WorldCat member library worldwide

The regulatory framework defined by the Water Framework Directive requires the development of reliable methodologies for assessing and / or characterizing the health status of aquatic ecosystems. The objective of this thesis was to identify the relative roles of environmental parameters (temperature, seasonal cycle, mineralization), population characteristics and anthropic pressures on biomarker responses in a model aquatic organism, the zebra mussel (Dreissena polymorpha). A sister species, Dreissena rostriformis bugensis, which invaded more recently our waterways, has been used in parallel and its potential as a biomonitor has also been evaluated. For this purpose, a battery of a dozen sub-cellular biomarkers was measured in different populations of the two species living in contrasting environments, at different times of the year, but also under laboratory stresses. The selected biomarkers corresponded to different physiological and / or antitoxic functions, and responses with high ecological relevance, such as oxygen consumption or filtration activity, were occasionally followed. These various parameters allowed to question the concepts of sensitivity and vulnerability of the populations and to understand the factors determining biomarker responses. Inter-population differences showed that the accumulation of contaminants by organisms and their biomarker responses depend on environmental quality at the originating site of each population, but also on the season, a confounding factor which must therefore be taken into account during biomonitoring programs. Strong differences in biomarker responses between the two species were also observed, both in situ and during laboratory experiments, emphasizing the need to differentiate the two species, so close they are. The recent invader, D. r. bugensis, presents more plastic responses in situ, but appears less able to manage acute stress in laboratory. Conversely, D. polymorpha, which is about 200 years old in France, appears to be better adapted, with less response variability and a better tolerance to contaminants. This thesis work is part of the BIOMICS convention, carried out in collaboration with ONEMA. It shows that these two species are able to inform about the contamination status of their environment. Variations in biomarker responses at the sub-cellular level indicate early changes in environmental quality. Some biomarkers, however, seem more informative than others do, so the measured battery could be reduced. In the future, this work will allow a better reading and interpretation of biomarkers measured in autochthonous or transplanted populations, and attest the value of biomarkers as tools for assessing aquatic environment quality
Les invasions biologiques des milieux d'eau douce analyse du rôle des traits biologiques et écologiques d'un nouvel envahisseur (Dikerogammarus villosus, Gammaridae, Crustacea) dans le processus invasif by Simon Devin( )

1 edition published in 2003 in French and held by 1 WorldCat member library worldwide

The Moselle River, owing to its geographic localization, is connected to the main European waterways, generating regular establishment of new exotic species. A recent invader (Dikerogammarus villosus, Amphipoda, Crustacea) was used as a model for our study. We defined and analysed its biological and ecological traits, and evidenced a pool of characteristics that could have enhanced D. villosus invasiveness. Such characteristics are also frequently presented in the literature as shared by invasive Gammaridae. In order to check this hypothesis, and to define whether those traits are common or specific to invaders, a comparison of bio/ecological traits of invasive and non-invasive gammarid species was performed, that revealed the importance of ecological traits, allowing a species to go through the first steps of the invasion process. Moreover, we have shown that invasive gammarids generallly originate from biogeographic areas where this group is highly diversified. Finallly, the study of macroinvertebrate communities in the Moselle River showed an increase of the functional diversity between 1994-2001, with nevertheless a trend to the homogenisation
Développement d'une boîte à outils pour comprendre et prédire la dynamique spatiale et temporelle des macrophytes submergés : application aux écosystèmes fluviaux by Diane Espel( )

1 edition published in 2020 in French and held by 1 WorldCat member library worldwide

De par leurs rôles écologiques multiples, les macrophytes sont une composante importante des hydrosystèmes, qu'il est essentiel de conserver. Toutefois, durant la saison estivale, des densités importantes des espèces submergées entraînent des problèmes récurrents dans certains cours d'eau, notamment en milieu urbain pour les usagers et les gestionnaires, et peuvent avoir des conséquences négatives pour la santé des écosystèmes. Dans un contexte de changements globaux, les enjeux liés à la prolifération des macrophytes submergés incitent à proposer des outils permettant de mieux comprendre la dynamique des herbiers et de prédire leur évolution selon différents scénarios environnementaux. Dans cette optique, la présente thèse a pour objectif le développement d'une boîte à outils accompagnant un modèle mécaniste multispécifique de production des végétaux aquatiques submergés, le modèle DEMETHER. Ce modèle permet de simuler la dynamique spatiale et temporelle de la biomasse de deux espèces communes de la Garonne moyenne (Myriophyllum spicatum et Ranunculus fluitans), sur des tronçons d'environ un kilomètre, et tient compte de la variabilité des conditions hydromorphologiques et météorologiques locales. Pour ce faire, il nécessite de connaître certains paramètres écophysiologiques et de disposer de données spatialisées de biomasse pour sa calibration, ainsi que de données bathymétriques et de substrat. La première phase de ce travail a alors consisté à réaliser des relevés sur le terrain pour caractériser le site d'étude et à développer des outils numériques ou expérimentaux pour l'acquisition de ces données. Le premier outil développé a pour objet le suivi des macrophytes submergés par télédétection. La méthode explorée a confirmé le potentiel de l'imagerie multispectrale à haute résolution spatiale (50 cm) des satellites Pléiades, traitée par des algorithmes d'apprentissage automatique, pour cartographier la distribution des herbiers et quantifier leur biomasse in situ. Cette approche nous a par ailleurs conduits à proposer une stratégie d'échantillonnage optimisée des macrophytes en grand cours d'eau pour de futures investigations. Ce travail ouvre des perspectives intéressantes pour appliquer la méthode à de l'imagerie drone, et poursuivre son développement pour un suivi mensuel automatisé. En parallèle, un outil de mesure de paramètres écophysiologiques par oxymétrie a été développé et appliqué aux deux espèces d'intérêt. Les données obtenues renseignent en particulier sur les capacités photosynthétique et respiratoire de chaque espèce en réponse à des facteurs limitants (lumière, température). La seconde phase de ce travail a consisté en l'application du modèle DEMETHER pour l'exploration de différents scénarios d'évolution climatique. Des simulations de la dynamique des herbiers en termes de biomasse ont été réalisées pour les conditions thermiques actuelles et pour une hausse des températures prévisible à l'horizon 2041-2070. Les résultats ont montré l'importance de la sensibilité de certains processus physiologiques à la température pour expliquer les patrons de distribution des deux espèces étudiées, soulignant l'intérêt de la modélisation mécaniste pour comprendre la structuration des communautés de macrophytes. Les premiers résultats obtenus avec cette boîte à outils ont confirmé sa fonctionnalité. Toutefois, en vue d'étendre son champ d'application, chacun des outils développés durant la thèse devra encore être amélioré, notamment pour affiner la calibration du modèle DEMETHER. Des propositions précises ont été formulées dans ce sens
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.95 (from 0.88 for Integrated ... to 0.97 for Les invasi ...)

Alternative Names
Simon Devin onderzoeker

Languages
French (10)

English (8)