• Acronyme :
  • Référence :
  • Domaine de recherche :
    Sciences du vivant
  • Région :
    Subantarctique, Crozet, Kerguelen
  • Site :
    Université Rennes 1 :
  • Responsable du projet :
    Renault David

Subantarctic biodiversity, effects of climate change and biological invasions on terrestrial biota

subantarctic islands are amongst the most
isolated islands from any continental landmass and contain a number of the
limited terrestrial habitats present at these latitudes. Interestingly, our
knowledge of the subantarctic biodiversity, autoecology and effects of climate
changes and biological invasions still contain many gaps. In parallel, accurate
assessments of the sensitivity and vulnerability of polar organisms must be
achieved in order to reliably predict species and community trajectories. In addition to climate changes, alien insects
and plants can represent significant drivers of community structure and
functional diversity in general.
Changes in plant communities have strong bottom-up
effects on multitrophic interaction networks with subsequent effects on
above-ground animal communities in terms of abundance, taxonomic and functional
diversity. In this project, we are investigating the spatio-temporal patterns of the
subantarctic biodiversity, biological invasion processes, the effects of
changing environments and multi-stress on species physiological ecology and the
perception of the biodiversity in a non-market context.