Despite their ecological, cultural, and economic importance, lion (Panthera leo) populations in Kenya are declining rapidly due to retaliatory killings following livestock depredation, depletion of wild prey, habitat loss driven by human activities, climate change, and disease.

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

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.

Mycorrhizas are symbiotic associations between soil fungi and most plant species.

Op 12 november verdedigde Clare Fenwick het proefschrift 'The political economy of immigration and welfare state reform: a collection of comparative political and economic essays on human mobility and social protection'. Het promotieonderzoek is begeleid door Olaf van Vliet en Kees Goudswaard.

Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.

Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris

The application of nanomaterials in industrial processes and consumer products provides many societal benefits, but can also lead to the release of nanomaterials into the environment. The work in this dissertation aims to provide insights into the potential environmental impacts that may follow from…

The thesis is about the study of shell evolution of the Hydrocenidae of the genus Georissa. This thesis started with a general overview on the evolutionary process of animals due to ecological changes.

Anthropogenic change is reshaping ecological systems, raising concerns about increasing transmission of infectious diseases. Among these, mosquito-borne diseases may be particularly sensitive to environmental change, as their transmission depends on vector populations.

Promotie

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Lezing, Studium Generale

The study of orchid flowers, fruits, and inflorescences is crucial due to the remarkable diversity of orchid species and their unique adaptations to pollinators and seed dispersers. However, our understanding of the evolution and development of these organs within the orchid family remains limited.

Promotor: Prof.dr. W.J.G.M. Peijnenburg

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

This thesis focuses on the social dimensions of crane and wetland conservation in rural landscapes in Kenya, Uganda and Zimbabwe.

Consequences for sediment stability and seston trapping

Novel entities may pose risks to humans and the environment. The small particle size and relatively large surface area of micro- and nanoparticles (MNPs) make them capable of adsorbing other novel entities, leading to the formation of aggregated contamination.

Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.

Promotores: H.A. Udo de Haes, H.H.T. Prins, Co-promotor: H.H. de Iongh

Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.

As a non-invasive genetic method, eDNA based approaches have become an important component of ecologists' and environmental managers' toolkits for biomonitoring in conservation and an increasingly important source of ecological knowledge.

Marine sponges are important members of reef ecosystems, as they play ecological roles that are essential for the health of the reef.

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

Promotoren: Prof.dr. G.R. de Snoo en Dr. R. Heijungs

Animal diet studies are critical for understanding ecological processes such as trophic interactions, energy flow, and nutrient cycling. By examining what animals consume, ecologists gain insights into species specialization, predator-prey relationships, and ecosystem management.

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

Overzicht van economische vakken per opleiding, zoals aangeboden door de Afdeling Economie.

Hoe dachten de oude Grieken over geld en economie? Naar die vraag doet universitair docent Tazuko van Berkel onderzoek. Op Brainwash vertelt ze er meer over.

De Universiteit Leiden heeft een schenking van ruim 2 miljoen euro ontvangen van Stichting Utopa voor de sectie Sociale, Economische en Organisatiepsychologie. Met deze schenking kan een Fonds Psychologie en Economisch Gedrag worden ingesteld voor onderzoek en onderwijs. Daarnaast komt er een kenniscentrum…

Het oplossen van maatschappelijke problemen vereist vaak een gedegen multidisciplinaire voorbereiding. De specialisatie Economics and Governance, aangeboden door de Department of Economics en het Institute of Public Administration, combineert inzichten uit beide disciplines.

Overzicht van de vacatures bij de afdeling Economie.

In the thesis the dynamics of strategies is studied from two perspectives.In the first part of the thesis strategies are considered to be opinions present in a community.

Marlou Schrover is op 1 maart Leo Lucassen opgevolgd als hoogleraar Economische en Sociale Geschiedenis.

Studievoorlichting

Veel alumni zullen er waarschijnlijk voor kiezen om na hun bacheloropleiding een aanvullende master te volgen. Omdat het interessant is je nog verder te verdiepen in je vakgebied of omdat het je kansen op de arbeidsmarkt vergroot.

De antwoorden op veelgestelde vragen over de specialisatie Economics and Governance binnen de masteropleiding Public Administration vind je op de Engelstalige pagina.

Landen die plastic afval importeren, recyclen daarvan gemiddeld minstens 63 procent. Terwijl we dachten dat het overgrote deel werd verbrand of eindigde als zwerfvuil. Dat ontdekte promovendus Kai Li met collega’s van het Centrum voor Milieuwetenschappen Leiden.