Characterisation and dynamics of pollination networks on a urbanisation gradient in the French West indies

Started in october 2021

Funding: doctoral grant

Supervisor: François Bretagnolle ; cosupervisor: Marie-Jeanne Perrot-Minnot

Abstract

Cities host an incredible diversity of plants, the majority of which are exotic, presenting a wide range of floral traits that are very important but often radically different from those of the natural environments that surround them. The urban environment therefore profoundly alters the dynamics of interactions between plants and pollinators, often reducing the number and the diversity of interactions as well as the frequency of visits by specialist species. Furthermore, between the city and the natural environments surrounding it, there is a significant evolutionary gradient in plant communities, in terms of species present, their status (exotic/native), their abundance, and the surface area of their environments. The aim of this research project is to understand how urbanization affects the structure of pollination networks in the French West Indies. It will therefore involve the characterization of interaction networks on an urbanization gradient through the floral traits of plant species, the examination of the consequences of this urbanization on the dynamics of interactions between plants and pollinators, as well as analysing how the different human uses of flora, in an urban and peri-urban context, affect the structure of plant-pollinator networks and the services they provide.

Keywords

plant-pollinator interactions ; urbanization ; interaction networks ; tropical island environment

Thesis advisory panel

Adam Vanbergen (INRAE – Agroécologie, Dijon)
Colin Fontaine (MNHN – CESCO, Paris)

extrait:

lien_externe:

titre:

Caractérisation et dynamique des réseaux de pollinisation sur un gradient d’urbanisation dans les Antilles françaises

date_de_debut_these:

octobre 2021

nom:

Cyrille

date_de_debut_these_numerique:

202110

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kc_raw_content:

Characterisation and dynamics of pollination networks on a urbanisation gradient in the French West indies

Started in october 2021

Funding: doctoral grant

Supervisor: François Bretagnolle ; cosupervisor: Marie-Jeanne Perrot-Minnot

 

Abstract

Cities host an incredible diversity of plants, the majority of which are exotic, presenting a wide range of floral traits that are very important but often radically different from those of the natural environments that surround them. The urban environment therefore profoundly alters the dynamics of interactions between plants and pollinators, often reducing the number and the diversity of interactions as well as the frequency of visits by specialist species. Furthermore, between the city and the natural environments surrounding it, there is a significant evolutionary gradient in plant communities, in terms of species present, their status (exotic/native), their abundance, and the surface area of their environments. The aim of this research project is to understand how urbanization affects the structure of pollination networks in the French West Indies. It will therefore involve the characterization of interaction networks on an urbanization gradient through the floral traits of plant species, the examination of the consequences of this urbanization on the dynamics of interactions between plants and pollinators, as well as analysing how the different human uses of flora, in an urban and peri-urban context, affect the structure of plant-pollinator networks and the services they provide.

 

Keywords

plant-pollinator interactions ; urbanization ; interaction networks ; tropical island environment

 

Thesis advisory panel

Adam Vanbergen (INRAE – Agroécologie, Dijon)
Colin Fontaine (MNHN – CESCO, Paris)