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Today, our planet is undergoing major climatic changes. Particularly in the face of rising temperatures, it is not easy to predict how flora and fauna will react and adapt in disturbed ecosystems. International research, in which Professor Johan Yans' team (Department of Geology and ILEE Institute) is taking part, has found some answers in fossils, which have been the memory of Darwinian evolution for millions of years. Explanations.

One foot in the past, the other in the future. From Etruscan granulation to PIXE analysis, Serge Mathot has built a unique career, between scientific heritage and particle accelerators. Portrait of a passionate alumnus at the crossroads of disciplines.

It's official: the University of Namur joins the Réseau d'Échanges et de Liaisons entre Institutions d'Enseignement Supérieur Francophones (RELIEF). It thus becomes the fourth partner in this network, alongside the Université du Québec à Trois-Rivières (UQTR), the Université Savoie Mont Blanc and the Haute École Spécialisée de Suisse Occidentale (HES-SO).

JuryProf. Eli THORÉ (UNamur), PresidentProf. Patrick KESTEMONT (UNamur), SecretaryProf. Ranjàna RANDRIANARIVO (Université d'Antananarivo)Dr. Valérie CORNET (UNamur)Dr. Omayma MISSAWI (UNamur)Prof. Catherine MOUNEYRAC (Université Catholique de l'Ouest)Prof. Gauthier EPPE (ULiège)SummaryThe widespread production and use of plastics have led to their continuous release into the environment. Microplastics (MPs) are now ubiquitous in aquatic ecosystems, where their bioavailability to organisms and potential entry into the food web raise serious environmental and public health concerns. Substantial progress has been made in understanding MP toxicity, and their hazardous potential is now widely acknowledged. However, MP toxicity studies remain complex, as multiple particle characteristics, such as size, shape, polymer type, and sorbed contaminants might influence both bioavailabilityTo bridge this gap, the present thesis adopted a dual, complementary approach: (i) characterizing the environmental occurrence and bioavailability of MPs, and (ii) assessing the ecological relevance of using environmentally derived MPs in in vivo toxicity experiments.Overall, this thesis provides insights into the reproductive and transgenerational effects of environmentally relevant MPs while underscoring the importance of considering particle-pollutant interactions. By combining in situ field data with in vivo laboratory experiments, it demonstrates that the use of environmentally derived MPs represents a more realistic and ecologically meaningful approach to hazard characterization. Further studies should be carried out in this same perspective to generate robust, exploitable data and contribute to establishing a comprehensive MP risk characterization.

South America is a subcontinent rich in natural and cultural resources. Between biodiversity preservation and development cooperation, UNamur maintains valuable partnerships to address the challenges of biodiversity loss and understand current socio-economic transformations. Immersion in Ecuador and Peru. 

JuryProf. Nicolas DENDONCKER (UNamur), PresidentProf. Sabine HENRY (UNamur), SecretaryDr. Sébastien DUJARDIN (UNamur)Prof. Pierre OZER (ULiège)Prof. Emmanuel TWARABAMENYE (University of Rwanda)Prof. Caroline MICHELLIER (MRAC and UCLouvain)AbstractThis research investigates community vulnerability to landslides and floods in Northwestern Rwanda, hazards that frequently interact to produce compound disasters. The research focused on understanding the institutional, social, and structural factors that shape vulnerability and adaptive capacity in this disaster-prone region. Using a mixed-methods approach at local-scale, including institutional analysis, household surveys (n = 904), and field observations, the research highlights how vulnerability is shaped by socio-economic conditions, weak institutional coordination, and limited adaptive capacity. A Contextualized Vulnerability Index (CoVI) was developed to map vulnerability patterns, revealing particularly high vulnerability in landslide-prone and dual-hazard zones. The analysis of adaptive capacity showed that while awareness of hazards is high due to lived experiences, financial constraints, and limited technical knowledge hinder communities' ability to adapt effectively. The study contributes to the literature on social vulnerability and disaster risk reduction by emphasizing the importance of locally grounded, evidence-based strategies to strengthen community resilience in hazard-prone regions.

JuryProf. Nicolas DENDONCKER (UNamur), ChairProf. Sabine HENRY (UNamur), SecretaryProf. Frédéric SILVESTRE (UNamur)Dr. Sébastien DUJARDIN (UNamur)Prof. Kara PELLOWE (Stockholm University)Prof. Romain GLELE KAKAI (University of Abomey Calavi)Prof. Patrick KESTEMONT (UNamur)Prof. Eli THORE (UNamur)AbstractMangroves play an important role in environmental conservation and livelihood provision yet remain one of the most threatened ecosystems on earth. This doctoral study assesses pathways to enhance coastal sustainability in the Anthropocene, by promoting the sustainable use of mangroves and strengthening their social-ecological resilience through an interdisciplinary approach. The thesis is structured into four specific objectives: assessing the role of traditional beliefs and local deities in promoting the sustainable use of mangroves, analyzing the synergies between legal frameworks and traditional beliefs in enhancing the social-ecological resilience of mangroves, developing a novel interdisciplinary framework to evaluate the social-ecological resilience of mangroves, and operationalizing the proposed framework in Benin's mangroves, West Africa.  We collected field data using ethnobiological surveys, drone image analysis and document review, in-depth interviews, focus group discussions, plant and fish inventories across three coastal communities in Benin. The study draws insights from the seven principles of resilience to analyze mangrove sustainability. The interdisciplinary methodology of this study links plant biology, fisheries sciences, and human geography to analyze mangroves as complex social-ecological systems. Findings of the thesis show that traditional beliefs and local deities play a significant role in regulating the use of mangrove resources, while the overlapping of formal and informal institutions offer opportunities to enhance their social-ecological resilience. The novel proposed framework called Mangrove Social Ecological Resilience Appraisal (MaSERA) outlines variables and indicators tailored to mangroves to assess their social-ecological resilience. Its application in Benin highlights its potential in identifying factors that enable or erode mangrove resilience, for informed decision making. The study argues that promoting the sustainable use of mangroves and enhancing their social-ecological resilience represent dual imperatives for achieving coastal sustainability in the Anthropocene. It contributes to the growing body of knowledge on mangrove conservation and provides actionable insights for integrated coastal zone management.

At UNamur, parchments are much more than objects of curiosity: they are at the heart of an interdisciplinary scientific adventure. Starting with historical sciences and conservation, the research has gradually incorporated the disciplines of physics, biology, chemistry, and archaeology.  This convergence has given rise to research in heritage sciences, driving innovative projects such as Marine Appart's doctoral work, supervised by Professor Olivier Deparis. This research has now been recognized with a publication in the prestigious journal Heritage Science (Nature Publishing Group).

Brendan Reid has just joined the Environmental and Evolutionary Biology Research Unit (URBE) team in the Department of Biology, Faculty of Science. This unit functions as a collaborative ecosystem, bringing together skills and expertise to advance research on organisms and their dynamic interactions with the environment. Dive into aquatic and semi-aquatic research!

The success of female Cistercian monasticism in the Southern Netherlands in the 13th century - over forty houses in the dioceses of Liège and Cambrai - is a powerful indicator of the aspirations of a society in transformation, enthusiastic about new forms of spirituality and religious life. For all that, the phenomenon remains surprisingly little studied, despite the wealth of archaeological and historical sources. The program Thursday, December 11, 20259:30am: Welcome10:00am: Introduction by the symposium organizing committeeSession 1 - Chair: Marie-Élisabeth Henneau (Université de Liège)10:30am: Alexis Grélois (Université de Rouen-Normandie, GRHis) - L'appartenance des moniales à l'ordre cistercien (XIIe-XIIIe siècle): False debates and real questions11:30am: Coffee break11:45am: Michel Dubuisson (Abbaye de Villers asbl), Patrice Gautier (Musées royaux d'Art et d'Histoire), Louise Hardenne (Musées royaux d'Art et d'Histoire) - L'abbaye de La Cambre dans la filiation villersoise12:35pm: Lunch breakSession 2 - Chair: Jeroen Deploige (Universiteit Gent)1:40pm: Marie-Christine Laleman (City of Ghent), Els De Paermentier (Universiteit Gent)- The Byloque Abbey in Ghent: between archaeological memory and archival wealth2:30pm: Pierre-Hugues Tilmant (SPW, AWaP), Marie Verbeek (SPW, AWaP), Sarah Cremer (Institut royal du Patrimoine artistique), Nicolas Ruffini-Ronzani (Université de Namur/Archives de l'État à Namur)- Dossier de fondation de l'abbaye Notre-Dame du Vivier: l'archéologie permet-elle lever un coin du voile?3:20pm: Coffee break3:40pm: François De Vriendt (Société des Bollandistes) - Memory and devotion in the female communities of Hainaut and Namurois. What place for local figures and traditions?4:30pm:Robin Moens (FWO/KU Leuven) - (What) spiritual walls? The spirituality of mulieres religiosae enclosed in and outside monastic space17:20: end of first day18:00: verre de l'amitié offered by SPWFriday, December 12, 2025Session 3 - Chair: Geneviève Laurent (SPW, AWaP)9:00: Philippe Mignot (SPW, AWaP) - Clairefontaine Abbey: archaeological data on the origins9:50am: Vincent Debonne (Vlaamse Overheid-Agentschap Onroerend Erfgoed), Robin Moens (FWO/KU Leuven)- Sisters a little slower than we thought. The Cistercian abbey of Val-des-Vierges near Oudenaarde10:40am: Coffee break11:00am: visit to the former abbey of Notre-Dame du Vivier, accompanied by AWaP archaeologists12:00pm: lunch breakSession 4 - Chair: Mathieu Piavaux (Université de Namur)1:00 pm: Virginie Boulez (SPW, AWaP), Alain Marchandisse (FNRS/Université de Liège) - La Paix-Dieu 1240-1244. Foundation of a Cistercian abbey under the episcopacy of Robert de Thourotte. Dialogue of historical and archaeological sources13:50: Marie Demelenne (Musée royal de Mariemont), Patrice Gautier (Musées royaux d'Art et d'Histoire), Jean-François Nieus (FNRS/Université de Namur)- The hermit, the lady and the clerics. Aux origines de l'abbaye de L'Olive (Morlanwelz)2:40pm: coffee break3:00pm: Emmanuel Bodart (Archives de l'État à Namur) - L'abbaye de Félixpré près de Givet. New revelations on its foundation and endowment (1246-1266)3:30pm: Paul Lambrechts (Herita vzw) - Herkenrode Abbey, a millennium of history: how to interpret myths, excavations and sources, and how to incorporate them into a project for the future?4:00 pm: Benoît Rouzeau (Université de Picardie Jules Verne, Trame UR 4284/ LAMOP UMR 858)- General conclusions4:30 pm: end of symposiumProgram in PDF format Organizing committee Aurore Carlier - Société archéologique de NamurPatrice Gautier - Musées royaux d'Art et d'HistoireXavier Hermand - Université de NamurFiona Lebecque - Société archéologique de NamurJean-François Nieus - FNRS/Université de NamurMatthieu Pignot - FNRS/Université de NamurNicolas Ruffini-Ronzani - Université de Namur/Archives de l'ÉtatPierre-Hugues Tilmant - SPW, AWaPMarie Verbeek - SPW, AWaP Practical information The Study Days organizing committee would like to thank the owners of the Abbey Notre-Dame du Vivier for their welcome and for making the premises available.Surrounding these Study Days revolves a multitude of events dedicated to the Abbey Notre-Dame du Vivier de Marche-les-Dames. To find out more, see the program at www.lasan.be I register it