Accounting for interspecific interactions in bird population dynamics using multispecies integrated population models

• Main Author: Queroue, Maud
• Other Authors: Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Sud )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université Montpellier, Olivier Gimenez, Pierre-Yves Henry
• Format: Doctoral or Postdoctoral Thesis
• Language: French
• Published: HAL CCSD 2021
• Subjects: Demography; Statistical ecology; Integrated population model; Seabirds; Passerines; Interspecific relationship; Démographie; Ecologie statistique; Modèle de population intégré; Oiseaux marins; Passereaux; Relation interspécifique; [SDV.SA]Life Sciences [q-bio]/Agricultural sciences; Brown Skua
• Online Access: https://theses.hal.science/tel-03558187; https://theses.hal.science/tel-03558187/document; https://theses.hal.science/tel-03558187/file/2021_QUEROUE_archivage.pdf

To understand and predict the fate of species over time, it is necessary to understand the different factors shaping their dynamics. Within communities, species interact with each other, through numerous interspecific interactions (e.g. competition, predation), but also with individuals of their own species, as well as with their environment (e.g. climatic conditions, habitat). The complexity of the analyses lies in the need to work at different biological levels, from the individual to the community. It is therefore necessary to develop methods that could accommodate different data sources. Integrated population models (IPM) allow, in their simplest form, to combine data at the individual scale (e.g. capture-recapture) and at the population scale (e.g. counts) into a single analysis and thus offer the possibility to estimate demographic parameters and population sizes. Their extension to the multispecies scale allows the analysis of the effect of the estimated population size of one species on the demographic parameters of another species while taking into account other factors such as environmental covariates and propagating all sources of uncertainty. Therefore, these models could allow a better understanding of the role of interspecific interactions in species dynamics. Thus, the aim of this PhD thesis, at the interface between modelling and ecology, is to highlight the potential of multispecies IPMs by applying them to relevant systems of interacting species.Through three case studies, different interspecific interactions (predation, competition) as well as different factors (climatic covariates, habitat quality, phenology) have been analysed to understand the mechanisms underlying the dynamics of these species. A first case study consisted in a predator-prey system of seabirds (the blue petrel Halobaena caerulea and the Brown skua Catharacta lonnbergi). The effects of predation relationships were analysed while taking into account the climatic conditions at sea to highlight their respective roles on the ...