Corentin Irien

PhD student Research Team: EcoPEPS e-mail: corentin.irien@univ-brest.fr Tél. : +33(0)2 98 01 69 42 Caen : CAMPUS 1, Bât. J3, Porte IR 059, Université de Caen Normandie CS 14032, Esplanade de la paix,14032 CAEN CEDEX 5 Brest : UFR Sciences, Bât. F, Bureau F115, Université de Bretagne Occidentale 6, Avenue Victor Le Gorgeu, 29200 Brest

Research activities

PhD since 2023: "Peatlands and associated oligotrophic habitats of the Armorican Massif (Brittany, France): Relationships between conservation value, ecosystem services and uses in the context of adaptation to global changes."

My research focuses on peatlands and the complex of peaty habitats associated with them.

Peatlands are at the heart of many issues, both in terms of biodiversity and responses to global change. These ecosystems, which were extensively exploited during the 20th century, are becoming increasingly rare. It is estimated that in France, the area of peatlands has halved over the last century, due to drainage, peat extraction and the intensification of agricultural practices.

Peatlands and associated peat habitats provide a multitude of ecosystem services that contribute to the mitigation of global change (carbon storage, regulation of water flows), but are also vulnerable to these changes. Although knowledge is abundant on an international scale, it remains limited in the context of the Armorican Massif (western France).

The TOURBZH project, financed by the Brittany Region, the Direction Régionale de l'Environnement, de l'Aménagement et du Logement and the European Union, aims to study the various components of the peatland ecosystem and oligotrophic habitats (vegetation, soil, etc.), apply several conservation status assessment methods, and evaluate ecosystem services on four Natural Reserves.

This involves the acquisition of data in terms of biodiversity and physico-chemical data, but also concerning the uses and social representations of these sites, which need to be placed in their landscape context.

In particular, one of the objectives will be to determine whether the current and potential state of conservation of peat bogs and associated peaty environments in the Armorican Massif is helping to meet current challenges linked to global change.

Current programs

TOURBZH – 2023-2026 - Tourbières et milieux oligotrophes associés du Massif Armoricain : Lien entre état de conservation, fonctionnement et usages dans le cadre de l’adaptation aux changements globaux » FEDER. Coordinateur S. Gallet (Laboratoire Géoarchitecture, Université de Brest)

Supervisers

Sébastien Gallet (Laboratoire Géoarchitecture, Université de Brest) & Servane Lemauviel-Lavenant (UMR EVA INRAE Université Caen Normandie)

 Supervision

Supervision of Tanguy Doaré (2024) « Évaluation de l’état de conservation et des services écosystémiques de tourbières des Monts d’Arrée ».

Publications

• Irien C., Doaré T., Jacek G., Lemauviel-Lavenant S., Gallet S. (2024) A reference system of slope bogs and moorlands in the Monts d'Arrée (Brittany, France) to plan restoration. 14^th European Conference on Ecological Restoration. 26-30 August 2024. Tartu, Estonia (Communication Orale)
• Lemauviel-Lavenant S, Chauvel L, Irien C, Odoux J-F (2024) Mapping wet grasslands to consider ecosystem services at the landscape scale. In Why grasslands? (eds. C.W. Klootwijk, M. Bruinenberg, M. Cougnon, N.J. Hoekstra, R. Ripoll-Bosch, S. Schelfhout, R.L.M. Schils, T. Vanden Nest, N. van Eekeren, W. Voskamp-Harkema, A. van den Pol-van Dasselaar), Grassland Science in Europe, vol. 29, 797-799.
• Irien C., Lemauviel-Lavenant S., Gallet S. (2023). Peatlands and associated oligotrophic habitats of the Armorican Massif: Link between conservation status, functionality and uses in the context of adaptation to global changes. RE3 Reclam Restore Rewild. 11-15 June 2023, Quebec, Canada. (Poster)
• Lemauviel-Lavenant S, Chauvel L, Irien C, Diquélou S, Odoux JF (2022) Ecosystem services provided by wet grasslands through extensive livestock farming. In Grassland at the heart of circular and sustainable food systems (eds. L. Delaby, R. Baumont, V. Brocard, S. Lemauviel-Lavenant, S. Plantureux, F. Vertes and J.L. Peyraud), Grassland Science in Europe, vol. 27, pp. 204-206.

Background

2015 – 2018 : Licence Biologie des populations – Environnement, Université de Bretagne Occidentale

2018 - 2020 : Master Biodiversité, écologie et évolution ‘Gestion et Conservation de la Biodiversité’, Université de Bretagne Occidentale