Margaux Mathieu-Resuge

Margaux Mathieu-Resuge
Institut Français de Recherche pour l'Exploitation de la Mer | Ifremer

PhD in Marine Ecology

About

21
Publications
4,289
Reads
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60
Citations
Additional affiliations
March 2019 - May 2020
Wasser Cluster Lunz
Position
  • PostDoc Position
Description
  • AQUATERR: Aquatic-terrestrial linkages – export of polyunsaturated fatty acids from aquatic ecosystems via emerging insects
October 2015 - October 2018
Université de Bretagne Occidentale
Position
  • PhD Student
Description
  • Trophic ecophysiology of two bivalve species (N. subnodosus and S. crassisquama) under environmental variabilities in a coastal lagoon (Ojo de Liebre, BCS, Mexico). Under the supervision of Edouard Kraffe, Fabienne Le Grand, and Gauthier Schaal.
Education
September 2013 - June 2015
Sorbonne Université
Field of study
  • Oceanography and Marine Environments
September 2012 - June 2013
Université Bordeaux 1
Field of study
  • Biology of Organisms and Ecosystems
September 2010 - June 2012
Université de Toulon
Field of study
  • Biology and Environment

Publications

Publications (21)
Article
Climate change can decouple resource supply from consumer demand, with the potential to create phenological mismatches driving negative consequences on fitness. However, the underlying ecological mechanisms of phenological mismatches between consumers and their resources have not been fully explored. Here, we use long-term records of aquatic and te...
Article
Full-text available
Organisms at the base of aquatic food webs synthesize essential nutrients, such as omega‐3 polyunsaturated fatty acids (n‐3 PUFA), which are transferred to consumers at higher trophic levels. Many consumers, requiring n‐3 long‐chain (LC) PUFA, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have limited ability to biosynthesize...
Article
Full-text available
Consumers feeding at the aquatic–terrestrial ecosystem interface may obtain a mixture of aquatic and terrestrial diet resources that vary in nutritional composition. However, in lake riparian spiders, the relative significance of aquatic versus terrestrial diet sources remains to be explored. We investigated the trophic transfer of lipids and polyu...
Article
Full-text available
• The ecological role of emergent aquatic insects from lakes in exporting dietary polyunsaturated fatty acids (PUFA) across the freshwater-land interface is still poorly understood. • In this field study, we explored the seasonal biomass export of emergent insects from three subalpine lakes and investigated how lipids of emergent insects were relat...
Article
Full-text available
Across ecosystems, resources vary in their nutritional composition and thus their dietary value to consumers. Animals can either access organic compounds, such as fatty acids, directly from diet or through internal biosynthesis, and the extent to which they use these two alternatives likely varies based on the availability of such compounds across...
Poster
Full-text available
Within the EUROPONDS project we looked into the contribution of aquatic invertebrates to terrestrial ecosystems, which are globally declining, in various countries all over Europe. Our study encompassed a restored quarry in Alpedrete, Madrid, Spain, a landscape destined for livestock activities. We hypothesized that the emergence during autumn and...
Article
Carbon isotopic fractionation was studied during the development of the diatom Chaetoceros muelleri grown in batch culture with ¹³C-depleted CO2 addition. Cellular and growth parameters and isotopic composition of dissolved inorganic carbon and particulate organic carbon were monitored every two days, while the content and isotopic composition of i...
Poster
Full-text available
This poster was a contribution by Juan Rubio-Ríos and Encarnación Fenoy from EUROPONDS project to the online Symposium about "Researches in Experimental Sciences" ("IX Simposio de Investigación en Ciencias Experimentales") from University of Almería in Spain.
Article
An important, but underappreciated, consequence of climate change is the reduction in crucial nutrient production at the base of the marine food chain: the long-chain omega-3 highly unsaturated fatty acids (n-3 HUFA). This can have dramatic consequences on consumers, such as fish as they have limited capacity to synthesise n-3 HUFA de novo. The n-3...
Article
Full-text available
Bivalves' physiological functions (i.e. growth, reproduction) are influenced by environmental variability that can be concomi-tant with trophic resource variations in terms of quality and quantity. Among the essential molecules that bivalves need to acquire from their diet to maintain physiological functions, fatty acids (FAs) such as polyunsaturat...
Article
Full-text available
Determining the lipid content and fatty acid (FA) composition of aquatic organisms has been of major interest in trophic ecology, aquaculture, and nutrition for over half a century. Although protocols for lipid analysis are well-described, their application to aquatic sciences often requires modifications to adapt to field conditions and to sample...
Article
Full-text available
Deposit-feeding sea cucumbers are efficient nutrient recyclers and have the potential to contribute to the limitation of organic matter load in polyculture or integrated aquaculture systems. Assessing how they assimilate organic matter originating from other farmed species is therefore important for the development of such multi-species farming sys...
Poster
Full-text available
Emerging aquatic insects (EAI) are important vectors through which freshwater-derived organic matter can enter terrestrial food webs. Aquatic-derived dietary energy can support terrestrial consumer fitness, especially via its polyunsaturated fatty acids (PUFA) that are otherwise short in supply from terrestrial diet. Considering qualitative aspects...
Article
Full-text available
The trophic fate of various food sources is of central interest for ecologists, yet not well understood in coastal lagoon food webs. In this field study, fatty acids (FA), stable isotopes (SI), and compound-specific isotopic analysis (CSIA) on FA were used to investigate how diets from oceanic and local sources are retained in a bivalve species (Sp...
Poster
Full-text available
Poster highlighting my PhD objective and first results. Presented in 2019 at the University of North Carolina Wilmington (UNCW) in the Center for Marine Sciences (CMS) for the Graduate Student Day. Final results for the C. neogracile and A. minutum experiments have been published in Biomolecules in 2020.
Article
Understanding the nature and origins of food sources supporting coastal lagoon-inhabiting organisms is necessary to evaluate the ecological status of such ecosystems. The trophic ecology of a bivalve species Spondylus crassisquama was studied in the Ojo de Liebre lagoon (Baja California, Mexico), combining stable isotope (SI), fatty acid (FA) and s...
Thesis
Full-text available
Les lagunes côtières sont des écosystèmes semi-fermés à l'interface de la terre et des océans et sous l'influence de ces deux compartiments. De par ces caractéristiques, elles sont soumises à de fortes variations spatiales et saisonnières de leurs ressources trophiques. De par leur nature fermée et peu profonde, elles vont amplifier la force des pr...
Technical Report
Notre étude a permis d’établir un modèle conceptuel des principaux paramètres régissant l’aquaculture d’holothuries en bassin et en milieu côtier. Ce modèle doit maintenant être testé et validé grâce à de nouvelles expérimentations afin de mettre en place des protocoles d’élevages performants qui sont nécessaires pour mener cette filière naissante...

Network

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Projects

Projects (5)
Project
The 12th International Conference on the Applications of Stable Isotope Techniques to Ecological Studies will be held from June 6-10, 2022!
Project
EUROPONDS was selected as the 3rd fresh project, a joint call of the European Federation of Freshwater Sciences (EFFS) board and the EFFS Societies as well as the European Fresh and Young Researchers (EFYR) and representatives of the Fresh Blood for Fresh Water (FBFW). To evaluate the often overlooked ecological contributions and ecosystem services provided by ponds across Europe, we will investigate the taxonomy and biomass (‘biodiversity’) and the energy content and dietary quality, as measured by total lipids and their fatty acids (‘nutritional value for subsequent consumers’) of emerging insects from ponds across Europe. Funding for this project is provided by the EFFS-federated societies.
Project
The flow of energy and nutrients across ecosystem boundaries can crucially influence the productivity of adjacent habitats. Emerging aquatic insects represent an important pathway that freshwater-derived organic matter can enter terrestrial food webs. Emerging insects significantly contribute to the diets of riparian predators, such as birds, bats, and predatory beetles. Unlike terrestrial insects, they contain considerable amounts of long-chain polyunsaturated fatty acids (LC-PUFA), which are known to crucially influence animal physiology. The overall objective of this project is to quantify the emergence of aquatic insects and their subsequently transfer of potentially-limiting biochemical nutrients, i.e., LC-PUFA, from freshwater lakes to their surrounding terrestrial ecosystems.