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

Promotie

This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.

The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.

Streptomyces are bacteria abundant in soil that participate in diverse and complex interactions. These bacteria are the main producers of the antibiotics we currently use in the clinic.

Herstel van de natuur op uitgeputte landbouwgrond en in natuurgebieden verloopt moeizaam. ‘Bodemtransplantatie’ kan mogelijk uitkomst bieden. Dat betoogt Martijn Bezemer, hoogleraar Ecologie van Plant-Microbe-Insect interacties. Oratie op 18 december.

The filamentous bacteria Streptomyces are widespread inhabitants of terrestrial soils.

Elk onderdeel van de kringloop op een melkveebedrijf heeft een specifieke bacterie- en schimmelsamenstelling. Dat ontdekten de Leidse postdoc onderzoeker Sofia Gomes en haar begeleiders Nadia Soudzilovskaia en Peter van Bodegom in samenwerking met het Louis Bolk instituut en Naturalis Biodiversity Centre.…

Promotie

Promotie

A critical look at the impact assessment modelling of metals in Life Cycle Impact Assessment and improvement options.

What are the behaviours of plant traits throughout various points in the growing season in a radiative transfer model framework and how well can this knowledge be integrated through data assimilation to provide priors for robust local and global vegetation products and analysis?

Aim: To develop and enable application of a practical, flexible, user-friendly platform to provide the scientific community with a tool to generate land surface products and its associated uncertainties and exploit these for data-intensive science.

Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs

An important part of the SCS specialisation is the internship period. Students will get the opportunity to get to know the field and to apply what they have learned during the courses.

Projecten van de afdeling Environmental Biology

The field of science communication is very broad. Below is a list of organisations where SCS students can fulfill internships or where alumni have found jobs.

Gisteren verscheen er een artikel in Biznews over het watertekort in California. David Zetland, universitair docent aan het Leiden University College The Hague, gaf zijn mening over dit probleem.

Antibiotic-resistant bacteria pose a major health threat. Addressing this challenge requires among others the development of new antibacterial compounds. The research described in this thesis focuses on discovering novel antibiotics from soil bacteria, specifically Streptomyces and Paenibacillus.Despite…

Vooral neerslag en bodemzuurgraad bepalen welke microben in een bepaalde habitat overleven en welke niet. Deze kennis is van belang om de biodiversiteit in stand te houden. Leidse milieukundigen werkten mee aan het onderzoek. Publicatie in Nature op 1 augustus.

Promotie

Festival

Festival

How can we quantify the density of species within a community through environmental DNA concentrations?

Festival

Festival

The book ‘Bestrijdingsmiddelen en Milieu' gives a transparent overview of facts and figures concerning pesticide use in the Netherlands and the impact of pesticides on the environment.

De afdeling Environmental Biology (CML-EB) houdt zich bezig met vraagstukken rondom biodiversiteit en natuurlijke hulpbronnen op het platteland in westerse en niet-westerse gebieden.

Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…

Supervisor: P.J.J. Hooykaas

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

The thesis describes terrestrial field trials aimed to detect side-effects of pesticides within the framework of pesticide registration procedures. Field trials were developed using vascular plants Brassica napus and Poa annua, caterpillars Pieris brassicae and effects on decomposition were studied…

Promotor: Prof.dr. G.P. van Wezel

The overall objectives of my thesis are to investigate the dynamics of the sorghum root microbiome and to explore the beneficial effects of the root microbiome on sorghum growth and stress tolerance.

Promotor: G.P. van Wezel, Co-promotor: D. Claessen

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

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

Politicologie is een brede studie met veel diepgang. Je bestudeert politieke vraagstukken op lokaal, nationaal en internationaal niveau, vanuit verschillende invalshoeken.

Promotores: H. Schiessel, G.T. Barkema

Ik wil iets met Engelstalige studies met een internationale focus in Den Haag. Bekijk jouw mogelijkheden bij Universiteit Leiden.

Dubbele binding. Het omgaan met contrasterende eisen door professionals in de openbare dienst. Hoe kunnen openbare dienst professionals hun PSM afstemmen met de contrasterende eisen die door de organisatorische en sociale context waarin zij werken gesteld worden?

Deze onderzoekscluster maakt deel uit van het onderzoeksprogramma ‘Institutions, Decisions and Collective Behaviour’.

Dit onderzoekscluster maakt deel uit van het onderzoeksprogramma ‘Institutions, Decisions and Collective Behaviour’.

Heb je een vraag over studeren aan de Universiteit Leiden, het studentenleven in Leiden en Den Haag, of ben je op zoek naar inside informatie over de opleiding? Kom direct in contact met een van onze studenten!