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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018




Centre Alpin sur les Réseaux Trophiques et Ecosystèmes Lacustre

Biodiversity and biotic interactions

Coordinators :  
Dr. Stephan Jacquet, Research Director 
Dr. Victor Frossard, Assistant Professor 

BIOTIC aims at addressing the role of biodiversity, the functions and processes associated with it, and its responses (from intra-specific to community levels) to anthropogenic and climate forcings.

Lakes shelter a flourishing biodiversity that support important ecosystem services to human societies. The exhaustive characterization of this aquatic biodiversity still represents a first challenge due to the miscellaneous organism groups spanning a large range size (µm to m) associated to diversified life stages. Predicting future trends of this biodiversity represents another substantial research challenge as species dynamics are constrained by multiple types of direct and indirect ecological interactions that can vary overtime. Changes of biodiversity and its responses to different environmental and anthropogenic stressors are addressed over different time-scale for a comprehensive assessment of their relative influences and the establishment of ecological references. The explicit consideration of the specificities and coupling between the different compartments (within and between benthic and pelagic zones) represent a last challenge for a global understanding of the lake functioning at a whole ecosystem-scale. To address the challenges, different researches are conducted regarding two majors and intersectional themes: Characterizing the biodiversity and associated functions & Assessing the drivers of biodiversity. Differently said BIOTIC aims at (i) addressing and integrating the diversity and the role of biotic interactions in models of functioning of lacustrine ecosystems, and (ii) studying and analyzing the responses of species/populations/communities to multiple stressors with the idea to discriminate local and global forcings. Ongoing Projects