Amphithéâtre Maurice Halbwachs, Site Marcelin Berthelot
Open to all
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Abstract

Declines in biodiversity are being observed, and pollinating insects are not spared. Among the environmental pressures on pollinator populations, changes in land use have been identified as a major threat. In Europe, urbanization (expansion and densification of urban areas) is the dominant land-use change, leading to a type of ecosystem with profoundly different abiotic and biotic characteristics. Using national and international literature, we'll look at how insect pollinator communities are modified in these urban environments, and why some cope better than others. Understanding the responses of pollinator communities will enable us to make recommendations and envisage adaptations to urban spaces to favor them.

Nicolas Deguines

Nicolas Deguines
Credits: Hugo Struna.

I've been a doctor in ecology at the Muséum national d'Histoire naturelle since 2013 and a lecturer at the University of Poitiers since 2020. As an ecologist, my research has two main objectives : 1) to understand the effects of natural or anthropogenic environmental changes on biodiversity, its functioning and ecosystem services, and 2) to develop biodiversity conservation measures. In particular, I draw on tools and concepts from community ecology, landscape ecology, trophic ecology and conservation science. I am particularly interested in pollinators, notably through my involvement in the Photographic Monitoring of Pollinating Insects (Spipoll), and their responses to different environmental pressures (e.g. land-use changes, agricultural intensification). Among others, sowbugs (terrestrial isopods) are organisms I study with interest.

Speaker(s)

Nicolas Deguines

Senior Lecturer, University of Poitiers