Soil is a home for an unbelievable diversity and abundance of microbial life that is essential for supporting life on our planet.

How soil microbial composition impacts structure and composition of the aboveground plant and animal communities?

In this thesis, the role of plant-mediated soil legacy effects in shaping aboveground plant-insect interactions was investigated.

Organic amendments applied to agricultural fields can partially offset our carbon emissions to the atmosphere and improve the resilience of agriculture to the effects of climate change. Driving these benefits, however, are complex and poorly understood interactions between organic amendment properties,…

Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

The main research question of this thesis was: Can nitrogen cycling on dairy farms on peat soil in the Dutch Green Heart area be improved by adapting management to the nitrogen supply from soil and by using other grassland species and crops without affecting milk production?

Promotor: J.A. van Veen, Co-promotor: E.E. Kuramae

Promotores: Prof.dr. H. van Veen & Prof.dr. W. de Boer (Wageningen University)

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

How presence, abundance and enzymatic activities of AM and EM fungi differently affect soil carbon sequestration processes?

Het onderzoekscluster ‘International Organisation’ maakt deel uit van het onderzoeksprogramma ‘Institutions, Decisions and Collective Behaviour’. De onderzoekers in dit cluster bestuderen de oorsprong, opzet, effecten en competitie over de normen, regels, instituties en formele organisaties die grensoverschrijdend…

Promotores: J.A.van Veen, P.L.G.Klinkhamer. Co-promotor: E.E.Kuramae

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…

In this thesis, I focused on studying the above- and belowground interactions of J. vulgaris from a plant-soil feedback (hereafter, PSF) perspective. I investigated the temporal variation of negative PSF and examined the effects of root-associated bacteria on plant performance and aboveground herbiv…

Kunst en vrije tijd, Kunst en vrije tijd

Master Political Science: International Organisation

In this PhD study, I aim to deepen our understanding of the influence of major mycorrhizal types, namely arbuscular mycorrhizae (AM) and ectomycorrhizae (EM), on the global soil carbon cycle and their potential distribution changes under future environmental shifts.

In de bachelorspecialisatie International Relations and Organisations ligt de nadruk op internationale onderwerpen. Het programma is geheel Engelstalig en wordt verzorgd in Den Haag.

Benieuwd of de Engelstalige bachelor opleiding International Relations and Organisations in Den Haag bij je past? Bekijk de opleidingsvideo.

The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.

Vinasse is a major by-product generated by the sugarcane biofuel industry. It is a source of microbes, nutrients and organic matter and often it is recycled as fertilizer.

Studievoorlichting

Studievoorlichting

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh

Studievoorlichting

De

Luchtvaart is een mondiale kwesitie. Toch zijn er maar weinig landen die de veiligheid van passagiers echt kunnen garanderen.

In dit artikel onderzoekt William Lippert hoe het overdragen van taken aan een uitvoerder van een overeenkomst van conventionele wapenbeheersing in Europa van invloed is op het succes ervan.

Article by Leiden University political scientist Daniel Thomas about shifting norms for membership in international organisations.

Dit onderzoek presenteert een vijfstappenplan voor de ontwikkeling van een effectieve gedragsgerichte cyberveiligheidsstrategie.

What are the global relationships between environmental conditions and abundance of distinct types of mycorrhizal fungi in soil and plant roots?

‘Wat ik aantrekkelijk vind aan het bodemleven, is dat het stuurbaar is,’ verklapt onderzoeker Martijn Bezemer van het Instituut Biologie Leiden (IBL). ‘Dat je kan zeggen: wat wil je? En dat ik de bodem dan kan omtoveren tot iets wat jij nodig hebt. Ten minste, dat dachten we.’

Op woensdag 25 mei 2022 bezocht de heer Daren Tang, directeur-generaal van de World Intellectual Property Organisation (WIPO), de Leidse Faculteit der Rechtsgeleerdheid in de Oude Sterrewacht samen met een delegatie van het ministerie van EZK onder leiding van Paul van Beukering en Angela van der Me…

Jan Willem Erisman wilde als kind al dingen beter maken. Als hoogleraar Duurzaamheid en Milieu is hij daarom ook buiten de universiteit actief. Hij staat bekend als de stikstofprofessor: in de media, maar ookin de Tweede Kamer legt hij het stikstofprobleem uit. Recent trad hij toe tot de Europese Soil…

From 29 – 31 May, second-year students of the Advanced MSc in International Relations and Diplomacy (MIRD) took part in the programme's annual visit to Geneva, Switzerland. Students participated in various institutional visits, and got to hear first-hand from practitioners and experts on a variety of…

Promotor: M. Ubbink, Co-Promotor: R. T. Dame

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

Muziek van een composteerbare cello, foto’s en geurtjes van schimmels en een geweven wandkleed. Het zijn een aantal voorbeelden uit Super Organism, het kunstproject van Suzette Bousema waarin je de ondergrondse schimmelwereld met al je zintuigen kunt beleven. Leids milieuwetenschapper Nadia Soudzolovskaia…

1. To what extent do metallic NPs added to soil extractions change the activity, abundance, or community composition of microbes? 2. How do the effects of metallic NPs on soil microbes differ from the effects of the ions shedding from corresponding NPs?

The rapidly increasing commercial application of metallic nanoparticles within products will inevitably enhance the amount of NPs being released into soil.

How the global distribution of vegetation stands dominated by arbuscular and ectomycorrhizal plants relate to principle aspects of belowground carbon accumulation processes?

Accumulation of metals in economy and environment and its associated risks, within the Netherlands and the EU.

Microbiome composition of the spermosphere and the rhizosphere of wild and modern bean accessions grown in an agricultural and a native soil from Colombia was characterized by metagenomics and cultivation-dependent approaches.

From 25-27 March, second-year students of the Advanced MSc in International Relations and Diplomacy (MIRD) took part in the programme's annual visit to Geneva, Switzerland. Students participated in institutional visits focusing on a wide range mandates in the field of International Relations and Dip…

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