The issue of maintaining and restoring biodiversity in the agricultural environment is attracting growing support from many stakeholders. But what can be done to achieve ambitious biodiversity targets for the future ?

Biodiversity is the baseline of all ecosystem services and thus represents an essential supporting service.aujourd’hui fortement menacée. Améliorer la connaissance génétique des communautés les composant fournira un support permettant d'améliorer leur gestion.

How to make grassland plant diversity an ally of breeders to adapt to an increasingly unfavorable climate and precipitation regime ?

The mountain forest as a sentinel of climate change and uses.

Periphytic microbial communities are complex assemblages of micro-organisms (algea, bacteria, fundi, cyanobacteria, protozoa) that are attached to immerged substrates (inert or alive) in most of aquatic ecosystems. These communities play a tremendous role in ecosystems functions and associated services (e.g. primary production, biogeochemical cycles).

In the face of global change, one of the major challenges for contemporary societies will be the preservation of biodiversity. In this context, it is necessary to identify the most vulnerable areas, especially within drainage basins and their river networks, very sensitive to these pressures. In order to inform public policy and help prioritize decision-making, it has become essential to better understand the consequences of management decisions and climate change scenarios on future biodiversity, which necessitates the study of projections (i.e. simulations) based on species models.

Climate change is altering the way living beings function and pushing ecosystems towards their ecological limits, beyond which they will no longer be able to maintain their functioning and provide ecosystem services at current levels. Our current knowledge suggests that this will have dramatic consequences for life on Earth (erosion of biodiversity) and for human societies (living conditions). One of the challenges of this thesis is to analyse and evaluate how biodiversity, from both an ecological and functional perspective, can be a major lever for adapting livestock farming systems to climate change and supporting their transition. We will focus on managed agro-ecosystems that are rich in biodiversity, such as permanent grasslands. In particular, we will be seeking to better characterise and understand the spatio-temporal dynamics of plant communities in a context of climate change and their impact on ecosystem functioning and its capacity to deliver ecosystem services, in relation to a diversity of management practices.

The management of invasive alien species (IAS) is a complex problem requiring interdisciplinary approaches that combine ecology and economics. Bio-economic decision-making tools are still underdeveloped.

Analyse the role of black woodpecker cavities in the conservation of forest species.

The Camargue (Rhône delta) is a complex social-ecosystem with important issues regarding biodiversity conservation and economic and cultural activities. In a context of global change, anthropogenic (water management in agricultural and natural areas, agricultural practices) and climatic (rainfall, evapotranspiration) drivers affect the hydro-saline balance. This hydro-saline functioning is a central element in the dynamics of the Camargue's habitats and species, and the associated networks of activities and services.