Phd Cold Water Coral Reefs In North Atlantic Role Of The Associated Fauna on The Ecosystem Trophic Functioning Cocofun H/F Ifremer
Plouzané - 29 CDD- 2 300 € / mois
- 🏠 Télétravail occasionnel
- 🕑 3 ans
- Bac +5
- Secteur Energie • Environnement
- Exp. - 1 an
Les missions du poste
Closure date for receipt of applications : 18/04/2025
Who are we?
The UMR BEEP (Biology and Ecology of Deep Marine Ecosystems) aims to study the biology and ecology of deep-sea ecosystems using a multidisciplinary and holistic approach, from microorganisms to megafauna, and from molecule to community. Research focuses on the description and dynamics of biological diversity, biotic and environmental interactions, and the adaptation and response of biological systems to natural and anthropogenic stresses. These issues are addressed at different spatial and temporal scales, depending on the ecosystems studied : chemosynthetic ecosystems, cold-water corals, seamounts or abyssal plains.
https://www.umr-beep.fr/
What is the subject of the thesis ?
In the deep SEA, where access to food is spatio-temporally variable, cold-water corals (CWC, such as Desmophyllum pertusum, Madrepora oculata et Solenosmilia variabilis) and their associated fauna form reefs with significant biodiversity and biomass. However, the origin and circulation of essential nutrients is still poorly understood and quantified. With this thesis project, we aim at improving the understanding of the trophic functioning of CWC reefs by describing i) the resource partitioning between CWC species and their associated fauna, ii) the link between the taxonomic diversity of the associated fauna and the trophic functioning of the reef, and iii) the influence of CWC diet on their physiological needs. Using a reef-scale approach, combining cutting-edge methods such as barcoding and compound specific isotope analysis, this project will compare the functioning of reefs in the Lampaul and Guilvinec canyons. In a context of climate change, with declining biodiversity and reduced access to essential nutrients, this project will provide needed knowledge for the management of these socio-ecosystems.
What will your mission BE?
Initially, you will describe the use of trophic resources within the reef (CWC and associated fauna) at intra- and inter-canyon spatial scales to better understand the functioning of these ecosystems. You will describe the geographical variability of food resources by comparing samples from two canyons (Lampaul and Guilvinec canyons) and the temporal variability thanks to the 5 years of sampling carried out in the Lampaul canyon since 2021. You will then identify the role of taxonomic diversity on the supply of essential nutrients within the coral reef. This will reveal how variability in the taxonomic diversity of faunal assemblages influences the transfer of essential nutrients (i.e. polyunsaturated fatty acids, PUFAs) within the reef. Finally, you will evaluate how the food resources used by corals might influence their physiological needs. In this way, IT will BE possible to understand the role of diet quality and environmental pressures on the physiological needs of the species studied.
How are your activities organised?
- Laboratory work (lipid analysis)
- Statistical analytical tools applied to ecology
- Travel to training courses and/or conferences in France and abroad
Key words
Deep SEA - Reef - Cold water corals - Associated fauna - Diversity - Trophic ecology - Lipids - Fatty acids - Isotopes
L'adresse du poste
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Le profil recherché
Who are you?
- Master 2
You have the following skills, knowledge and experience :
- Ecology of deep benthic ecosystems
- Analytical techniques in lipid biochemistry (HPTLC, GC-MS, GC-FID, GC-c-p-IRMS)
- Statistical analytical tools applied to ecology
- English
You have the following qualities :
- Ability to work as part of a team and with a variety of partners
- Organizational skills, rigor, dynamism
- Scientific writing skills
Bienvenue chez Ifremer
Join Ifremer, an ally of planetary well-being, to gain a better understanding of and better protection for the ocean.
From the abyss to the surface, from the coast to the open SEA, Ifremer is the French research institute that is wholly dedicated to the Ocean. Its teams carry out research, innovate and produce expert reports to protect the ocean, exploit its resources in a responsible manner and shares marine data.
Ifremer contributes its scientific expertise to throw light on public policies and develops solutions drawn from the ocean to meet the challenges of the ecological transition. Ifremer is the operator of France's oceanographic fleet with its shipbuilding subsidiary Genavir, and imagines, designs and deploys leading edge technological means to solve the ocean's mysteries.
Join our teams, made up of 1500 scientists and research support staff, present all along the coastal areas of France and French overseas territories.
www.ifremer.fr
Infos complémentaires
What are your benefits?
- Phd is a real opportunity to work on Ifremer's scientific and technological priority themes. IT entitle the holder to a gross monthly salary of 2300 Euros gross for a period of 3 years, which cannot BE combined with other scholarships.
- We have a teleworking agreement and our staff have 12 comp time days and supra statutory leave.
- We allocate a significant budget to developing skills, through individual or collective training actions.
- We have a CSR policy inspired by the purposes of the institute (sustainable mobility allowance, etc.)
How to apply for this position?
Your application file must include :
- A curriculum vitae
- A covering letter
- A reference letter
- An academic transcript (Bachelor + Master 1 and first semester Master 2)
Your application must BE compiled into 2 PDF files, up to 2 Mo for each file.
The deadline for applications is April 18th, 2025. Nevertheless, we strongly urge you to let us know as soon as possible of your intention to apply, by contacting the subject supervisor : Margaux Mathieu Resuge
In parallel, please submit your application to the doctoral school : https://amethis.doctorat.org/amethis-client/prd/consulter/offre/1056
Doctoral students' contracts will start as of October 6th, 2025, subject to the submission of administrative documents authorizing Ifremer to recruit the doctoral student (certificate of completion of the Master 2 or engineering degree + visa for foreign doctoral students outside the EU).
What are the next steps?
- Assessment of CV, cover letter and reference letter
- Interview with the supervising team
- Interview with the University of Brest (UBO)
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