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Understanding Population Connectivity Networks of Habitat-Forming marine Species

PhD defence, Thursday 8 September 2022. Ane Pastor Rollan.

Ane Pastor Rollan
Posidonia oceanica bed in the Balearic Islands. This is one of the habitat-forming species Ane has been investigating in one of her chapters.

During her studies, Ane investigated the connectivity of habitat-forming marine species using Individual-Based Models (IBMs). Marine population connectivity, or the exchange of propagules or larvae among distant populations, is largely influenced by ocean currents. These currents enable marine organisms to disperse among populations and often over broad geographical scales. This dispersal phase is therefore a critical process in determining the structure, dynamics, and persistence of marine metapopulations. Ensuring connectivity of ecologically important habitat-forming species such as seagrasses and benthic invertebrates is crucial, given their major decline in almost all coastlines of the world. Ane used the IBMs and network analysis to broaden our understanding of population dynamics, biodiversity patterns and their resilience to environmental change. The research findings provide important information on the functionality of different marine systems to support management actions in relation to conservation, restoration, and sustainable utilisation of marine species.

The PhD degree was completed at Department of Ecoscience, Aarhus University.

This summary was prepared by the PhD student.

Time: Thursday 8th of September 2022 at 09.30 am CET
Place: Building 150, room A1.20, The old cantina, Department of Ecoscience, Aarhus University, Risø
Title of dissertation: Understanding Population Connectivity Networks of Habitat-Forming Marine Species using Individual-Based Models
Contact information: Ane Pastor Rollan, e-mail: apro@ecos.au.dk

Members of the assessment committee:

Professor Dr. Corinna Schrum, Institute of Coastal Systems, Helmholtz-Zentrum Hereon & Institute of Oceanography, Universität Hamburg, Germany

Associate Professor Sakina-Dorothée Ayata, LOCEAN – Laboratoire d'Océanographie et du Climat, Sorbonne Université, France

Senior Researcher Morten Frederiksen (chair), Department of Ecoscience, Aarhus University, Denmark

Main supervisor:

Professor MSO Marie Maar, Department of Ecoscience, Aarhus University, Denmark

Co-supervisor:

Senior Scientific Consultant Flemming Thorbjørn Hansen, Section for Coastal Ecology, Technical University of Denmark, Denmark

Language: The PhD dissertation will be defended in English

The defence is public and on site (Teams option available).

The PhD thesis is available for reading at the Graduate School of Technical Sciences/GSTS

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