Martina G. Vijver has been appointed professor of Ecotoxicology at the Institute of Environmental Sciences of Leiden University with effect from 1 December 2017.

This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.

How do nanoparticles bioaccumulate and biodistribute in organisms?

The aim is to discover where differently shaped metal nanoparticles distributes in Danio rerio, linking the distribution with genomic responses and so come up with a Mode of Action.

Can we distinguish the effects of pesticides from other abiotic and biotic factors that occur in the field? And how do these factors interact with pesticides?

What is the mechanism of action preceding a physiological effects induced by metallic nanoparticles?

Chemical substances and nanomaterials are processed on a massive scale in diverse products, while their risks have not been properly assessed. Time and again synthesised substances have been shown to pollute the environment more than lab tests predicted. This is the warning given by Professor of Ecotoxicology…

Minute nanoparticles are bringing about a completely new industrial revolution. But little is known about the possible dangers to the food chain. An international group will be examining this issue, and Leiden researchers will be playing a key role.

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).

Microplastics are small pieces of plastic found in the environment. At CML research have been conducted in the distribution of these plastics on beaches around the world using citizen science. In addition, CML is conducting in depth case-studies in the Caribbean and along the Dutch coast. Follow-up…

Freshwater is an important resource, but at a great risk of species decline due to habitat loss, pollution and over-exploitation, and invasive alien species.

Ecotox is a stimulating top-facility that provides an integrative research environment around the topic of ecotoxicological testing and experimental research. Research focus: Dose-response modelling Mode-of-actions and mechanism-of-actions Test method development, in view of targets in…

The large-scale project NanoInformatics will assess the risks associated with nanoparticles. The project will be funded by the EU with 6.8 million euros and was launched at the beginning of this year. Three scientists from Leiden are involved. 'For the first time, this project combines the various experts…

What are the risks of nanoparticles?

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.

Promotor: Prof.dr. W.J.G.M. Peijnenburg, Co-promotor: Dr. ing. M.G. Vijver

Tools and Data of the department of Environmental Biology

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

Describe and identify what dosimetry parameters are of importance to interpret dose-response relationships (eg., mortality, sub-lethal, growth or reproduction inhabitation, DNA damage and reactive oxygen species, etc. ) for metal-based nanoparticles? How to develop quantitative models that enable to…

Henrik Barmentlo is our Institute of Environmental Sciences' nominee for the C.J. Kok Jury Award 2020.

How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.

Science, Institute of Environmental Sciences (CML)

How to improve the method in quantifying the combined effects of metal-based chemicals?

The latest research from the Leiden outdoor laboratory ‘Living Lab’ shows that the insecticide thiacloprid strongly influences even the most common and robust dragonfly species in the Netherlands. The study was published in the Journal of Applied Ecology.

Professor of Ecotoxicology Martina Vijver of the Institute of Environmental Sciences has given a public talk at Paradiso Amsterdam for Science & Cocktails on 4 March 2019. Her presentation was called: 'The added value & added risk of size: nanomaterials'.

Natural resources are becoming increasingly scarce. If we want to maintain our current standard of living, we will need inventive solutions. The researchers at the Institute of Environmental Sciences (CML) share their thoughts on how to achieve a fully circular economy in which as little use as possible…

Description of Atlas of the surfacewater concentrations of pesticides in the Netherlands, a pilotstudy.

The Netherlands is not particularly rich in ‘wild nature’. Comparatively, what we have is a lot of intensively used agricultural land. This means that from nature’s perspective there much to be gained by combining the ‘nature’ and ‘agriculture’ functions. Not an easy task in such a densely populated…

In this project innovative technology for photovoltaics cells is developed and analysis of ecological and health related risks are explicitly accounted for.

Governance of Sustainability is a two-year programme, worth 120 European Credit Transfer System points (ECTS).

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

Improving environmental risk assessment of pesticides in surface waters

How do you make a technology sustainable that does not even exist yet? Well, by bringing together an interdisciplinary team of pioneering European experts right at the start and paying attention to sustainability right from the development phase.

Time and again synthesised substances have been shown to pollute the environment more than lab tests predicted. In her inaugural lecture on 16 November, professor of Ecotoxicology Martina Vijver gives a warning for the risks of new, man-made chemical substances and nanomaterials. Various media payed…

Students searched for a student project about internalization and the effects of nanomaterials in freshwater organisms. Open to BSc and MSc students and any timeframe.

Every year, the World Cultural Council grants special acknowledgements to five to ten young researchers or scholars of the host country who have achieved outstanding performance in the fields of science, education or arts.

Writing an operational guide to the ISO standards for LCA and related sub-projects.

Professor of Ecotoxicology Martina Vijver had planned an eight-week field work course for her students, but the corona virus threw a spanner in the works and Vijver had to come up with a new plan at short notice. ‘Without the help of my own network and that of my colleagues this would have been very…

On International Women’s Day 2020, the first edition of the Leiden Top 50 was revealed, a list of 50 women who made a difference in Leiden in 2019. Among them three women from our Faculty: Martina Vijver, Felienne Hermans and Irene Groot.

Issues such as climate change, the depletion of natural resources or social inequality are too complex to be addressed from a single scientific discipline or by a single country. Leiden University has the expertise to bring the resolution of these enormous problems a small step closer.

Two scientific papers in Science deliver new pieces of the puzzle for the reasons of bee decline. Professor Koos Biesmeijer comment on this research in articles in the Dutch newspapers Volkskrant and NRC.