56 zoekresultaten voor “aquatic ecotoxicology” in de Publieke website
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Aquatic eDNA: Beyond Species Presence
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.
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Interactions of nutrients and pesticides and their effects on aquatic macrofauna
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?
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Effects of pesticides on aquatic macrofauna in the field
Promotores: W.J.G.M. Peijnenburg, G.R. de Snoo, Co-promotor: M.G. Vijver
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Effects of human pressures on aquatic invertebrate
What are interactive effects of human pressures on aquatic communities?
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Sustaining Ethical Aquatic Trade (SEAT)
Creating a framework to assess the sustainability of fish farms which will set sustainability standards and give consumers information about the the sustainability and safety of their seafood.
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Neonicotinoids in nature: The effects on aquatic invertebrates and their role in ecosystems
This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.
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Towards understanding the toxicity of copper nanoparticles in aquatic ecosystems
Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver
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power of biotic ligand models : site-specific impact of metals on aquatic communities
Promotor: G.R. de Snoo, Co-promotores: M.G. Vijver, J.P.M. Vink
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bioaccumulation and trophic transfer of engineered nanoparticles in the aquatic environment
The findings in this thesis improve the understanding of 1) the relationship between exposure characteristics and toxicity of ENPs, 2) the joint toxic action of ENP mixtures and the comparison to metal salt mixtures, 3) how NOM affects the individual and joint toxicity of ENPs, 4) the extent of trophic…
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Assessment of monitoring tools and strategies safeguarding aquatic ecosystems within the European water framework directive
CML rapport 192
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(QNAR) Models Predicting the Toxicity of Metal-based Nanoparticles to Aquatic Species
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…
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Effect van insecticiden op waterjuffers groter dan gedacht
Het nieuwste onderzoek uit het Leids openlucht laboratorium ‘Levend Lab’ toont aan dat het insecticide thiacloprid zelfs de meest voorkomende en robuuste waterjuffersoort in ons land sterk beïnvloedt. Het onderzoek is gepubliceerd in Journal of Applied Ecology.
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Thijs Bosker in AD: 'Meer microplastics in oceaan dan sterren in Melkweg'
Plastic is werkelijk overal op de wereld aanwezig. Thijs Bosker onderzoekt met zijn studenten hoe schadelijk dat is. Hij vertelt erover aan het AD. 'We hebben op het strand van Scheveningen een espressokopje met zand gevuld. We telden er 25 tot 50 stukjes in. In één kopje! We denken dat een walvis wel…
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Lan Dupuis
Wiskunde en Natuurwetenschappen
l.dupuis@cml.leidenuniv.nl | +31 71 527 2727
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Towards a greater understanding of the presence, fate and ecological effects of microplastics in the freshwater environment
This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.
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Development of an Adverse Outcome Pathway (AOP) for metallic nanoparticles
What is the mechanism of action preceding a physiological effects induced by metallic nanoparticles?
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Monitoring and detection of nanomaterials in biological media.
How do nanoparticles bioaccumulate and biodistribute in organisms?
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yuchao Song
Wiskunde en Natuurwetenschappen
y.song@cml.leidenuniv.nl | +31 71 527 2727
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Understanding the uptake and internal distribution of metallic nanoparticles in Danio rerio larvae
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.
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Towards an effective biodiversity conservation and governance in the Pontocaspian region
Freshwater and brackish water ecosystems are arguably the most vulnerable ecosystems on earth, due to concentrated human developments in and around them. The Pontocaspian (PC) region located at the border of Europe and Asia contains a variety of brackish water ecosystems and unique inhabitants, known…
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Development of a consistent methodology for assessment of the combined effects of metal-based chemicals to lettuce (Lactuca sativa L.)
Hoe kan de methode om de gecombineerde effecten van metaal-gebaseerde chemische stoffetn te bepalen worden verbeterd?
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Bregje Brinkmann
Wiskunde en Natuurwetenschappen
b.w.brinkmann@cml.leidenuniv.nl | +31 71 527 7475
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Kornelia Serwatowska
Wiskunde en Natuurwetenschappen
k.j.serwatowska@cml.leidenuniv.nl | +31 71 527 2727
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Henrik Barmentlo
Wiskunde en Natuurwetenschappen
s.h.barmentlo@cml.leidenuniv.nl | +31 71 527 2727
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Laura Julia Zantis
Wiskunde en Natuurwetenschappen
l.j.zantis@cml.leidenuniv.nl | +31 71 527 2727
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From molecules to monitoring: Integrating genetic tools into freshwater quality assessments
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.
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Fan Zhang
Wiskunde en Natuurwetenschappen
f.zhang@cml.leidenuniv.nl | +31 71 527 5615
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Aquatic eDNA: Beyond Species Presence
Promotie
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Realistischer onderzoek nodig naar stoffen die in milieu terechtkomen
Chemische stoffen en nanomaterialen worden massaal in producten verwerkt terwijl de risico’s niet goed ingeschat worden. Keer op keer blijken gesynthetiseerde stoffen het milieu sterker te verontreinigen dan labtesten voorspelden. Daarvoor waarschuwt hoogleraar Ecotoxicologie Martina Vijver van de Universiteit…
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Martin van der Plas
Wiskunde en Natuurwetenschappen
m.van.der.plas@cml.leidenuniv.nl | +31 71 527 2727
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Nanotechnologie helpt boeren minder pesticiden te gebruiken - maar kan chemicaliën ook giftiger maken
Nanotechnologie heeft de afgelopen jaren verschillende industriële sectoren veroverd. Hoewel velen zich er misschien niet van bewust zijn, zijn nanomaterialen verweven in veel van de producten die we dagelijks gebruiken. En de landbouwsector is als volgende aan de beurt. Leidse milieuwetenschappers…
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Nano shapes micro : Impacts of metallic nanoparticles on microbial communities
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.
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Aria of the Dutch North Sea
Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn
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Annetrude Boeije
Wiskunde en Natuurwetenschappen
a.g.boeije@cml.leidenuniv.nl | +31 71 527 2727
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Martina Vijver
Wiskunde en Natuurwetenschappen
vijver@cml.leidenuniv.nl | +31 71 527 1487
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Quantitative modelling of the response of earthworms to metals
Promotor: Prof.dr. W.J.G.M. Peijnenburg
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Develop a methodology for assessing the effective dose of nanomaterials for environmental risk assessment purposes
How to make a quantitative assessment of the relative contribution to toxicity of ions and particles? Is the toxicity of nanoparticles related to their size or shape? Which physicochemical property of nanoparticles is an appropriate dose metric of nanoparticles?
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bioaccumulation and trophic transfer of engineered nanoparticles in the aquatic environment
Promotie
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Ecological functioning of bacterial chitinases in soil
Promotores: Prof.dr. H. van Veen & Prof.dr. W. de Boer (Wageningen University)
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PNEC-pro
PNEC-pro is a user-friendly screening tool for professionals dealing with the assessment of surface water quality. The tool calculates local, watertype specific no-effect concentrations (PNEC) of copper, lead, nickel and zinc based on biotic ligand models (BLMs).
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Nanomaterial safety for microbially-colonized hosts: Microbiota-mediated physisorption interactions and particle-specific toxicity
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.
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Resolving a bioindicator diatom species complex using genomic approaches for freshwater biomonitoring
This thesis pioneers diatom molecular identification and quantification through genome-scale methods, with four key aims: (i) reviewing DNA/RNA sequencing methods in aquatic biomonitoring to highlight their strengths and limitations;
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Evaluating European imports of Asian aquaculture products using statistically supported life cycle assessments
Promotor: Prof.dr. G.R. de Snoo
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Student projects
To get an idea of the science communication products and research that is possible, a few examples of student projects of recent years are shown below.
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Unsprayed field margins: effects on environment, biodiversity and agricultural practice
A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…
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Biotic ligand models
Description of Biotic ligand models: making an inventory of available models & assessment of the variability of the predicted HC5 using the BLMs in different Dutch water types (2005 - 2007)
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Metals in LCIA
A critical look at the impact assessment modelling of metals in Life Cycle Impact Assessment and improvement options.
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Willie Peijnenburg
Wiskunde en Natuurwetenschappen
peijnenburg@cml.leidenuniv.nl | +31 71 527 5172
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Metagenomics for community ecology; a next generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
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Anthropogenic effects on links between macro-invertebrate diversity and ecosystem functioning
How are links between macro-invertebrate diversity and ecosystem functioning influenced by anthropogenic pressures?