• Thesis title: Projet trajectoires
• Type of project: Research
• Event: 2024

The TRAJECTOIRES project focuses on urban wastelands in the context of ecological and social transitions. It aims to understand their multifunctionality and their role in the city of tomorrow. Brownfields are often perceived as building sites, yet they present both ecological (biodiversity, limiting heat islands) and social (nature areas, ecological corridors) challenges.

As part of a reflection on land sobriety and new development policies (such as the "Zero Net Artificialization" law), this interdisciplinary project explores :

• The ecological and social roles of wasteland: biodiversity, ecosystem services, urban uses.
• Possible trajectories: rehabilitation, conservation, or mixed uses, for a livable and resilient city.

Using Marseille as an example, the program proposes an approach integrating urban planning, geography, ecology and social sciences to analyze and develop these spaces in the collective interest.

• Thesis title: Projet trajectoires
• Type of project: Research
• Event: 2024

The TRAJECTOIRES project focuses on urban wastelands in the context of ecological and social transitions. It aims to understand their multifunctionality and their role in the city of tomorrow. Brownfields are often perceived as building sites, yet they present both ecological (biodiversity, limiting heat islands) and social (nature areas, ecological corridors) challenges.

As part of a reflection on land sobriety and new development policies (such as the "Zero Net Artificialization" law), this interdisciplinary project explores :

• The ecological and social roles of wasteland: biodiversity, ecosystem services, urban uses.
• Possible trajectories: rehabilitation, conservation, or mixed uses, for a livable and resilient city.

Using Marseille as an example, the program proposes an approach integrating urban planning, geography, ecology and social sciences to analyze and develop these spaces in the collective interest.

• Thesis title: BIODIVAQUART
• Type of project: Research
• Event: 2021

The BiodivAquArt(Aquatic Biodiversity in Art) project is an interdisciplinary initiative led by Aix-Marseille Université, aimed at enriching historical and ecological knowledge of past aquatic ecosystems by studying representations of aquatic species in works of art.

Project objectives:

• Historical ecology: Analyze the taxonomic composition of aquatic biodiversity represented in ancient art, using statistical tools of numerical ecology. This analysis makes it possible to interpret geographical and temporal variations in biodiversity as a function of environmental and cultural parameters.
• Art-nature connection: Quantitatively investigate the relationship between the aesthetic experience of works of art and the connection with nature, in particular aquatic ecosystems. This approach aims to understand how art can mediate the conservation of aquatic biodiversity.
• Scientific mediation: Disseminate the results of the project to the general public and scientific communities, notably through the publication of a popularization book and the organization of educational workshops.

Project team:

The project is coordinated by :

• Thomas Changeux: Biologist at the Mediterranean Institute of Oceanology (MIO).
• Daniel Faget: Historian affiliated with UMR TELEMMe, based at the Mediterranean centre for social sciences and humanities (MMSH).

The team also includes :

• Anne-Sophie Tribot: Post-doctoral researcher.
• Thomas Richard: PhD student.

Together, they bring complementary expertise in marine biology, art history and historical ecology.

Activities and outlook:

Since 2017, the team has been collecting data on the aquatic fauna depicted in works of art, particularly Roman paintings and mosaics.

A participatory website has been set up to enrich this database.

The project also includes the production of a popular book for the general public, to share the main findings and raise awareness of aquatic biodiversity conservation.

By combining the analysis of artistic representations and historical ecology, BiodivAquArt offers a unique perspective on the evolution of aquatic ecosystems and underlines the importance of art as a source of information for biodiversity conservation.

• Thesis title: RHIZOCARBONE+
• Type of project: Research
• Event: 2021

The RhizoCarbone+ project(Stimulating the plant-microorganism-mineral continuum to store carbon in soils) is an initiative of Aix-Marseille Université's ITEM Institute. It aims to boost organic carbon storage in soils by stimulating interactions between plants, microorganisms and minerals.

In the context of climate change mitigation and global food security, the storage of organic matter (and associated carbon) in soils is a major issue, concretized at COP21 by the Internationally "4 for 1000" initiative. This initiative emphasizes that agriculture, and in particular agricultural soils, can play a crucial role in food security and climate change. Although it has been established that increasing the supply of organic matter is a major agro-ecological lever, the mechanisms for stabilizing this matter in soils remain to be studied in greater depth.

The RhizoCarbone+ project seeks to overcome this obstacle by focusing on the stabilization of rhizodeposits, i.e. root exudates released by plants into the soil. These organic compounds play a key role in interactions with soil microorganisms and minerals, thus influencing carbon storage.

Specific objectives of the project include:

• Analyze rhizodeposition mechanisms and their role in carbon sequestration.
• Study the interactions between root exudates, microorganisms and minerals to understand soil carbon stabilization processes.
• Develop pedagogical approaches, such as the creation of a MOOC entitled "Interdisciplinarity for 4 for 1000", to disseminate the knowledge acquired and promote sustainable agricultural practices.

The project is led by an interdisciplinary team comprising I. Basile-Doelsch, T. Heulin, W. Achouak and E. Doelsch, with the participation of PhD students such as T. Girard and S. Wagon.

By combining fundamental and operational research, RhizoCarbone+ contributes to a better understanding of carbon cycles and stocks at different scales, offering prospects for the adoption of agricultural practices that promote carbon sequestration and combat climate change.

• Thesis title: BIOEXTRACT
• Type of project: Research
• Event: 2021

The BioExtracT project(Le BIOmimétisme au service de l'EXTRACtion des Terres rares issues de sources secondaires) is an initiative of the Institut ITEM of Aix-Marseille Université, coordinated by Blanche Colin of CEREGE.

This project aims to develop innovative processes for extracting critical metals, in particular rare earths (REEs), from secondary sources such as industrial and mining residues. The approach is based on biomimicry, drawing inspiration from natural biological mechanisms to design extraction methods that are more respectful of the environment.

The main objectives of the BioExtracT project are :

• Identify biological molecules involved in the transfer of rare earths to living organisms.
• Test the complexation potential of these molecules for rare earths, by carrying out selective leaching tests on mining or industrial residues.

In a context of increasing pressure on strategic metal Resources, the production of critical metals from secondary sources is essential to support the development of technologies dependent on these materials, particularly those linked to the ecological transition. The BioExtracT project is therefore part of a circular economy and sustainable development approach, proposing innovative solutions for the recovery of industrial and mining waste.

The project has been selected as part of the ITEM Institute's call for projects in 2021, aimed at promoting interdisciplinary research in favor of environmental transition.