We study expressions of emotion and social decision making across species.

Doctoral Thesis

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn, Co-promotor: Dr. M.J.M. Schaaf

The effects of anthropogenic noise on interactions between predators and their prey are still little understood.

A study on the utilisation of Iron Age rectangular structures and related depositional practices in the Low Countries

Welcome to the Social Anxiety and Specific Phobia (SASP) Research Group!

Provides a cutting-edge comparative political economy analysis of welfare and inequality across ten East Asian countries.

Pursuing Whiteness in the Colonies offers a new comprehension of colonial history from below by taking remnants of individual agencies from a whiteness studies perspective. It highlights the experiences and perceptions of colonisers and how they portrayed and re-interpreted their identities in Afric…

The explosive radiation and diversification of the advanced snakes (superfamily Colubroidea) was associated with changes in all aspects of the shared venom system. Morphological changes included the partitioning of the mixed ancestral glands into two discrete glands devoted for production of venom ormucous…

CurveBend project aims to study the restauration of biodiversity in livestock landscapes through collective action, practical solutions, and research on ecological knowledge co-creation.

The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.

Source: Mediators Inflamm (2014)

What did it mean to be enslaved in in the Indian Ocean world in the 18th and 19th centuries? Over the last decades, historians have mined French, British, Portuguese and Dutch records for quantitative data on the European slave trade. This project focuses on the experience of being a slave and seeks…

The multiple connections between emblematics and Natural History in the broader perspective of their underlying artistic, literary, political and religious ideologies.

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

Consequences for sediment stability and seston trapping

The Vallesian, 11.1-9 Ma, was a special time in the Vallès-Penedes basin near Barcelona, where a biodiversity hotspot existed. Europe had a subtropical climate, with rhinos, forest giraffes, lions, hyenas, flying squirrels and primates.

Promotor: Prof.dr. B. van de Water, Co-promotores: L.T.M. van der Ven, A.S. Kienhuis

Assessing the risks of engineered nanomaterials (ENMs) solely on the basis of experimental assays is time-consuming, resource intensive, and constrained by ethical considerations (such as the principles of the 3Rs of animal testing). The adoption of computational toxicology in this field is a high p…

How do mycobacteria subvert the defenses of host immune cells?

Can we link multiple components from herbal extracts with their biological activities?

The work described in this dissertation contributes to a better mechanistic understanding of nanoparticles in vivo. To achieve that goal, we used the zebrafish as a highly predictive pre-screening model of nanoparticles.

This catalogue is the result of the EU_CUL project (2018-2021), which explores the use of cultural heritage in Europe for fostering academic teaching and social responsibility in higher education.

Heart failure is a major health care problem with high mortality.

Environmental Humanities in the New Himalayas: Symbiotic Indigeneity, Commoning, Sustainability showcases how the eco-geological creativity of the earth is integrally woven into the landforms, cultures, and cosmovisions of modern Himalayan communities.

Promotor: E.F. Smets Co-promotor: J. Geml

Promotor: Prof.dr. M.K. Richardson

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

Aspergillus niger is an important industrial producer of organic acids and enzymes producing large amounts of spent fungal biomass.

Ecotox is located in an ambitious surrounding at the Leiden University. It is an initiative of both institutes Institute of Environmental Sciences (CML) and Institute of Biology Leiden (IBL).

Karmaşık Avcı-Toplayıcılardan Erken Kentsel Toplumlara

Our research aims to develop drugs that boost the host immune response to better defend us against mycobacteria.

Does Artifical Light at Night (ALAN) disrupt seasonal physiological and behavioral patterns in migrating freshwater fish?

People who have taken antibiotics in the past three months pay more attention to negative facial expressions, according to research by postdoc Katerina Johnson and assistant professor Laura Steenbergen. This may explain how antibiotics increase the risk of developing depression.

This ecological community has long been known to affect host biology, and their diverse roles have been further clarified in recent years following numerous studies of animal:microbiota interactions in diverse systems.

“Temminck’s Order” is the scientific biography of Coenraad Jacob Temminck (1778–1850), a Dutch naturalist and the first director of ’s Rijks Museum van Natuurlijke Historie in Leiden.

The power of personalized nutrition lies in being able to conduct clinical research on healthy people while capturing metabolic markers sensitive to the impact of environmental and metabolic stressors (e.g. diet, changing sex hormones and the menstrual cycle).

There is concern about the threat that nanoplastics (NPs) may pose to both wildlife and humans. This thesis explores the mechanisms of toxicity of polystyrene nanoparticles (PS-NPs) in chicken embryo.

This multidisciplinary minor provides students with knowledge on how and why humans became the way they are. The minor focuses on the evolution of the species Homo sapiens from other hominin lineages and animal ancestors, and on the various factors shaping this process. Not only is human evolution of…

Promotor: Prof.dr. M. Danhof, Co-promotor: E.C.M. de Lange

An archaeological case-study of the Pointe des Châteaux, La Désirade and Les Îles de la Petite Terre micro-region, Guadeloupe, F.W.I.

How can you figure out if a skeleton is male or female? How did they brew beer in the distant past? Visitors to ArcheoHotspot could examine archaeological finds and taste prehistoric drinks at the Faculty of Archaeology.

Fleur Visser was awarded a Veni grant by the Netherlands Organisation for Scientific Research (NWO). She is one of seventeen promising young Leiden scientists, who get the opportunity to develop their own ideas over a period of three years. Veni-funding is part of NWO's Talent Scheme, concerning…