Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Eating behavior and food purchases during the COVID-19 lockdown : A cross-sectional study among adults in the Netherlands
    Poelman, Maartje P. ; Gillebaart, Marleen ; Schlinkert, Caroline ; Dijkstra, Coosje S. ; Derksen, Elianne ; Mensink, Frederike ; Hermans, Roel C.J. ; Aardening, Pleun ; Ridder, Denise de; Vet, Emely de - \ 2020
    Appetite 157 (2020). - ISSN 0195-6663
    Coronavirus - COVID-19 - Eating behavior - Food delivery - Food purchases - Public health

    On March 15, 2020, the Dutch Government implemented COVID-19 lockdown measures. Although self-quarantine and social-distancing measures were implemented, restrictions were less severe compared to several other countries. The aim of this study was to assess changes in eating behavior and food purchases among a representative adult sample in the Netherlands (n = 1030), five weeks into lockdown. The results show that most participants did not change their eating behaviors (83.0%) or food purchases (73.3%). However, socio-demographic differences were observed among those that reported changes during lockdown. For example, participants with overweight (OR = 2.26, 95%CI = 1.24–4.11) and obesity (OR = 4.21, 95%CI = 2.13–8.32) were more likely to indicate to eat unhealthier during lockdown compared to participants with a healthy weight. Those with a high educational level (OR = 2.25, 95%-CI = 1.03–4.93) were also more likely to indicate to eat unhealthier during lockdown compared to those with a low educational level. Older participants were more likely to indicate to experience no differences in their eating behaviors compared to those of younger age, who were more likely to indicate that they ate healthier (OR = 1.03, 95%CI = 1.01–1.04) as well as unhealthier (OR = 1.04, 95%CI = 1.02–1.06) during lockdown. Participants with obesity were more likely to indicate to purchase more chips/snacks (OR = 2.79, 95%CI = 1.43–5.45) and more nonalcoholic beverages (OR = 2.74, 95%CI = 1.36–5.50) during lockdown in comparison with those with a healthy weight. Of those that used meal delivery services before, 174 (29.5%) indicated to use meal delivery services more frequently during lockdown. Although the results confirm the persistence of dietary routines, profound socio-demographic differences were observed for those that did report changes. Especially for individuals with overweight and obesity, the lockdown has taken its toll on healthy dietary choices. Further research should unravel underlying mechanisms for these observations.

    The NORMAN Association and the European Partnership for Chemicals Risk Assessment (PARC): let’s cooperate!
    Dulio, Valeria ; Koschorreck, Jan ; Bavel, Bert van; Brink, Paul van den; Hollender, Juliane ; Munthe, John ; Schlabach, Martin ; Aalizadeh, Reza ; Agerstrand, Marlene ; Ahrens, Lutz ; Allan, Ian ; Alygizakis, Nikiforos ; Barcelo, Damia ; Bohlin-Nizzetto, Pernilla ; Boutroup, Susanne ; Brack, Werner ; Bressy, Adèle ; Christensen, Jan H. ; Cirka, Lubos ; Covaci, Adrian ; Derksen, Anja ; Deviller, Geneviève ; Dingemans, Milou M.L. ; Engwall, Magnus ; Fatta-Kassinos, Despo ; Gago-Ferrero, Pablo ; Hernández, Félix ; Herzke, Dorte ; Hilscherová, Klára ; Hollert, Henner ; Junghans, Marion ; Kasprzyk-Hordern, Barbara ; Keiter, Steffen ; Kools, Stefan A.E. ; Kruve, Anneli ; Lambropoulou, Dimitra ; Lamoree, Marja ; Leonards, Pim ; Lopez, Benjamin ; López de Alda, Miren ; Lundy, Lian ; Makovinská, Jarmila ; Marigómez, Ionan ; Martin, Jonathan W. ; McHugh, Brendan ; Miège, Cécile ; O’Toole, Simon ; Perkola, Noora ; Polesello, Stefano ; Posthuma, Leo ; Rodriguez-Mozaz, Sara ; Roessink, Ivo ; Rostkowski, Pawel ; Ruedel, Heinz ; Samanipour, Saer ; Schulze, Tobias ; Schymanski, Emma L. ; Sengl, Manfred ; Tarábek, Peter ; Hulscher, Dorien Ten; Thomaidis, Nikolaos ; Togola, Anne ; Valsecchi, Sara ; Leeuwen, Stefan van; Ohe, Peter von der; Vorkamp, Katrin ; Vrana, Branislav ; Slobodnik, Jaroslav - \ 2020
    Environmental Sciences Europe 32 (2020)1. - ISSN 2190-4707
    Chemical risk assessment and prioritisation - Contaminants of emerging concern - Effect-based methods - Environmental monitoring - High-resolution mass spectrometry - Non-target screening - NORMAN network - Suspect screening

    The Partnership for Chemicals Risk Assessment (PARC) is currently under development as a joint research and innovation programme to strengthen the scientific basis for chemical risk assessment in the EU. The plan is to bring chemical risk assessors and managers together with scientists to accelerate method development and the production of necessary data and knowledge, and to facilitate the transition to next-generation evidence-based risk assessment, a non-toxic environment and the European Green Deal. The NORMAN Network is an independent, well-established and competent network of more than 80 organisations in the field of emerging substances and has enormous potential to contribute to the implementation of the PARC partnership. NORMAN stands ready to provide expert advice to PARC, drawing on its long experience in the development, harmonisation and testing of advanced tools in relation to chemicals of emerging concern and in support of a European Early Warning System to unravel the risks of contaminants of emerging concern (CECs) and close the gap between research and innovation and regulatory processes. In this commentary we highlight the tools developed by NORMAN that we consider most relevant to supporting the PARC initiative: (i) joint data space and cutting-edge research tools for risk assessment of contaminants of emerging concern; (ii) collaborative European framework to improve data quality and comparability; (iii) advanced data analysis tools for a European early warning system and (iv) support to national and European chemical risk assessment thanks to harnessing, combining and sharing evidence and expertise on CECs. By combining the extensive knowledge and experience of the NORMAN network with the financial and policy-related strengths of the PARC initiative, a large step towards the goal of a non-toxic environment can be taken.

    Data presented in the paper "Timing it right: Non-consumptive effects on prey recruitment magnify overtime"
    Bertolini, C. ; Capelle, Jacob ; Timmermans, K. ; Bouma, T.J. ; Koppel, J. van de; Derksen, G.C.H. - \ 2019
    NIOZ Royal Institute for Sea Research
    Asterias rubens - Benthic ecology - Indirect interactions - Mytilus edulis - Population dynamics - Predator-prey
    This study aimed to quantify the impact of starfish presence on recruitment of mussel larvae. This was done with two trials ("Experiment column") by deploying spat collectors in meshed cages (cage column) (on multiple chains (Chain column)) with and without starfish Asterias rubens (Treatment column). Collectors were taken out weekly. Settled mussels (Count column) and other organisms (Amphipods, Polychaete, Other and Total column) were counted for each collector. Mussel spat was also measured (Length and Area columns)
    Veterinary pharmaceuticals and natural hormones in the environment after field applications of slurry
    Lahr, J. ; Derksen, A. ; Wipfler, E.L. ; Schans, M.G.M. van de; Berendsen, B. ; Blokland, M. ; Dimmers, W.J. ; Bolhuis, P. ; Smidt, R. - \ 2019
    Food or furniture: Separating trophic and non-trophic effects of Spanish moss to explain its high invertebrate diversity
    Borst, Annieke C.W. ; Angelini, Christine ; Berge, Anne ten; Lamers, Leon ; Derksen-Hooijberg, Marlous ; Heide, Tjisse van der - \ 2019
    Ecosphere 10 (2019)9. - ISSN 2150-8925
    brown food web - detritus - feeding guilds - food provisioning - foundation species - habitat complexity - habitat structure - non-trophic interactions - patch size - species richness - surface area

    Foundation species are typically suggested to enhance community diversity non-trophically by increasing habitat structure and mitigating physical stress, while their trophic role is considered of minor importance. Yet, there is little experimental evidence on the relative importance of trophic and non-trophic effects and the interaction with patch size. Here, we transplanted different festoon sizes of living Tillandsia usneoides (Spanish moss) and structural mimics assessing the trophic and non-trophic roles of this habitat-forming epiphyte in mediating the invertebrate community. Compared to bare branches, mimics enhanced species and feeding guild richness and abundances, but living festoons even more so, demonstrating that trophic and non-trophic effects jointly stimulated the community. Specifically, our results show that, independent of patch size, 40% of the total species richness and 46% of total guild richness increase could be contributed to habitat structure alone, while Spanish moss trophically stimulated these metrics by another 60% and 54%. As detritivores were particularly enhanced in living festoons, our findings suggest that trophic stimulation occurred primarily through the provisioning of Spanish moss detritus. Our results highlight that foundation species can facilitate their associated communities through both trophic and non-trophic pathways, calling for studies addressing their indirect trophic role via the brown food web.

    Diergeneesmiddelen in het milieu - een synthese van de huidige kennis
    Moermond, Caroline ; Lahr, Joost ; Montforts, Mark ; Derksen, Anja ; Bondt, Nico ; Puister-Jansen, Linda ; Koeijer, Tanja de; Hoeksma, Paul - \ 2019
    Bilthoven : Rijksinstituut voor Volksgezondheid en Milieu (RIVM) - 15
    Diergeneesmiddelen in het milieu : een synthese van de huidige kennis
    Lahr, Joost ; Moermond, Caroline ; Montforts, Mark ; Derksen, Anja ; Bondt, Nico ; Puister-Jansen, Linda ; Koeijer, Tanja de; Hoeksma, Paul - \ 2019
    Amersfoort : Stowa (Stowa rapport 2019-26) - ISBN 9789057738616 - 117
    Symposium Waterkwaliteit op de Kaart - IV
    Lahr, J. ; Derksen, Anja - \ 2019
    Werksessie diergeneesmiddelen
    Timing it right: Non-consumptive effects on prey recruitment magnify overtime
    Bertolini, C. ; Capelle, J.J. ; Timmermans, K. ; Bouma, T.J. ; De Koppel, J. Van; Derksen, G.C.H. - \ 2019
    Journal of Experimental Marine Biology and Ecology 513 (2019). - ISSN 0022-0981 - p. 47 - 54.
    Predator-prey - Indirect interactions - Population dynamics - Benthic ecology - Mytilus edulis - Asterias rubens
    Many organisms rely on chemical signals and cues to determine habitat suitability and safety. Chemical signals can mediate many interactions, including those between predators and their prey. Altering prey behaviour, these non-consumptive effects (NCEs) can influence population and community dynamics. Understanding how NCEs influence early life history stages, such as ‘decisions’ of benthic species with planktonic larvae about where to settle, can provide useful information on the ecological functioning of these systems as well as the management for commercial usage, although most studies have so far focused on intertidal systems which are already subject to a set of stressful conditions. With a shallow subtidal field experiment we investigated NCEs of the common starfish Asterias rubens on one of its main preys, the blue mussels Mytilus edulis. We tested the hypotheses that (1) the presence of starfish reduces mussels settlement and that (2) the mussels that settle will invest more energy towards induced defences than to growth, and will thus remain smaller than mussels settling in an area without starfish. Two independent trials revealed a significant reduction of mussel spat on the collectors in the presence of starfish after a two-week deployment period. There was however no effect of starfish on the size distribution of the mussel spat. The delayed observation of effects of starfish, absent after the first week but evident afterwards, suggests a time dependency of NCE's on spat settlement. Harnessing this ecologically important information has the potential to increase yield of mussel seeds available for fisheries by either removing starfish from the ground-based settling areas at the onset and for the duration of spatfall or by using floating substrates that are away from the bottom-bound starfish. Moreover, these results also underlines the potential of using predator cues in the application for sustainable natural antifouling compounds in situations with low recruitment pressures.
    Comparison of madder (Rubia tinctorum L.) and weld (Reseda luteola L.) total extracts and their individual dye compounds with regard to their dyeing behaviour, colour, and stability towards light
    Willemen, Hendra ; Meijdenberg, Geeske J.P. van den; Beek, Teris A. van; Derksen, Goverdina C.H. - \ 2019
    Coloration Technology 135 (2019)1. - ISSN 1472-3581 - p. 40 - 47.

    This paper reports on the colorimetric properties of natural dyes from madder and weld plants. For both crops, a comparison is made among several individual dye compounds and the total plant extracts. Dyeing properties, colour properties and colour stability have been studied. Insight has been gained into the role of the major dye compounds present in the plant. For madder as well as for weld, the use of the total plant extract is considered to be advantageous over the use of individual dye compounds in terms of solubility, colour tone and stability towards light, and non-coloured components present in the plant extract are considered to be responsible for increasing the solubility and the stability of the dye compounds.

    Photo-stability of a flavonoid dye in presence of aluminium ions
    Villela, Alexandre ; Vuuren, Monique S.A. van; Willemen, Hendra M. ; Derksen, Goverdina C.H. ; Beek, Teris A. van - \ 2019
    Dyes and Pigments 162 (2019). - ISSN 0143-7208 - p. 222 - 231.
    Flavonoid - Light-fastness - Luteolin - Natural dye - Reseda luteola - Weld

    The main colouring compounds of the dye plant weld (Reseda luteola L.) are the flavones luteolin (lut), lut-7-O-glucoside and lut-7,3ʹ-O-diglucoside. Alum (an aluminium salt)-premordanted wool dyed with weld leads to yellow colours that are of low resistance to light. The photo-stability of lut in aerated methanol–water 8:2 (v/v) solution upon irradiation with light above 300 nm was studied at different lut–Al3+ ratios. Experiments using extracts of weld to dye wool premordanted with increasing quantities of aluminium salts were also carried out. The photo-stability of lut in the polar protic solvent and the photo-resistance (light-fastness) of the colour of weld-dyed wool decrease with increasing concentrations of aluminium ions. Thus, the lower the [Al3+] used for mordanting the wool, the more light-fast its colour. Lowering the [Al3+] appears to have no negative influence on the wash-fastness of the colour. As the gain in light-fastness by the use of low [Al3+] to premordant the wool is not extensive, however, this does not seem to be a way to meet today's requirement of light-fastness of the colours of dyed textiles by itself. Nevertheless, it may be part of a bigger strategy to address the need for increased light-fastness of the colour of wool dyed with weld. Implementation of this approach by dyers is expected to clarify whether it results in benefits for textile dyeing practice.

    Foundation species enhance food web complexity through non-trophic facilitation
    Borst, Annieke C.W. ; Verberk, Wilco C.E.P. ; Angelini, Christine ; Schotanus, Jildou ; Wolters, Jan Willem ; Christianen, Marjolijn J.A. ; Zee, Els M. van der; Derksen-Hooijberg, Marlous ; Heide, Tjisse van der - \ 2018
    PLoS ONE 13 (2018)8. - ISSN 1932-6203

    Food webs are an integral part of every ecosystem on the planet, yet understanding the mechanisms shaping these complex networks remains a major challenge. Recently, several studies suggested that non-trophic species interactions such as habitat modification and mutualisms can be important determinants of food web structure. However, it remains unclear whether these findings generalize across ecosystems, and whether non-trophic interactions affect food webs randomly, or affect specific trophic levels or functional groups. Here, we combine analyses of 58 food webs from seven terrestrial, freshwater and coastal systems to test (1) the general hypothesis that non-trophic facilitation by habitat-forming foundation species enhances food web complexity, and (2) whether these enhancements have either random or targeted effects on particular trophic levels, functional groups, and linkages throughout the food web. Our empirical results demonstrate that foundation species consistently enhance food web complexity in all seven ecosystems. Further analyses reveal that 15 out of 19 food web properties can be well-approximated by assuming that foundation species randomly facilitate species throughout the trophic network. However, basal species are less strongly, and carnivores are more strongly facilitated in foundation species’ food webs than predicted based on random facilitation, resulting in a higher mean trophic level and a longer average chain length. Overall, we conclude that foundation species strongly enhance food web complexity through non-trophic facilitation of species across the entire trophic network. We therefore suggest that the structure and stability of food webs often depends critically on non-trophic facilitation by foundation species.

    Diergeneesmiddelen & hormonen in het milieu door de toediening van drijfmest : Een verkennende studie in de Provincie Gelderland naar antibiotica, antiparasitaire middelen, coccidiostatica en natuurlijke hormonen in mest, (water)bodem, grondwater en oppervlaktewater
    Lahr, Joost ; Derksen, Anja ; Wipfler, Louise ; Schans, Milou van de; Berendsen, Bjorn ; Blokland, Marco ; Dimmers, Wim ; Bolhuis, Popko ; Smidt, Rob - \ 2018
    Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2898) - 89
    Het voorkomen, de risico’s en de mogelijkheden voor emissiereductie van humane geneesmiddelen in water krijgen de afgelopen jaren steeds meer aandacht. Naar diergeneesmiddelen gaat tot op heden minder aandacht uit dan naar humane geneesmiddelen. In 2017 is daarom onderzoek verricht naar de lotgevallen van diergeneesmiddelen in drijfmest uit de intensieve veehouderij die toegediend wordt op het land. Het onderzoek richtte zich op de kalver- en varkenshouderij en met name op het risico van uitspoeling. Voor het onderzoek werden vijf op zandgrond gelegen bedrijven in Gelderland geselecteerd uit iedere sector. Voorafgaand aan de mesttoediening werd een monster van de mest zelf genomen en op diverse tijdstippen voor en na de mestinjectie werden de bodem, het grondwater en het oppervlaktewater en sediment van kavelsloten naast de bemeste percelen bemonsterd. In al deze monsters werden de concentraties van een groot aantal antibiotica, antiparasitaire middelen, coccidiostatica en natuurlijke hormonen bepaald middels chemische analyse.
    Interview NetNL journal (3rd issue 2017)
    Stremke, S. - \ 2017
    Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis
    Osinga, Ronald ; Derksen-Hooijberg, Marlous ; Wijgerde, Tim ; Verreth, Johan A.J. - \ 2017
    Journal of Experimental Biology 220 (2017)12. - ISSN 0022-0949 - p. 2236 - 2242.
    Carbon dioxide - Coral - Flow - Oxygen - Photosynthesis - Respiration

    Rates of dark respiration and net photosynthesis were measured for six replicate clonal fragments of the stony coral Galaxea fascicularis (Linnaeus 1767), which were incubated under 12 different combinations of dissolved oxygen (20%, 100% and 150% saturation), dissolved carbon dioxide (9.5 and 19.1 μmol l-1) and water flow (1-1.6 versus 4-13 cm s-1) in a repeated measures design. Dark respiration was enhanced by increased flow and increased oxygen saturation in an interactive way, which relates to improved oxygen influx into the coral tissue. Oxygen saturation did not influence net photosynthesis: neither hypoxia nor hyperoxia affected net photosynthesis, irrespective of flow and pH, which suggests that hyperoxia does not induce high rates of photorespiration in this coral. Flow and pH had a synergistic effect on net photosynthesis: at high flow, a decrease in pH stimulated net photosynthesis by 14%. These results indicate that for this individual of G. fascicularis, increased uptake of carbon dioxide rather than increased efflux of oxygen explains the beneficial effect of water flow on photosynthesis. Rates of net photosynthesis measured in this study are among the highest ever recorded for scleractinian corals and confirm a strong scope for growth.

    ‘Adjust transport to the product’
    Hogeveen-van Echtelt, Esther - \ 2016
    Voedingspatroon inventariseren
    Derksen, M. ; Wagemakers, A. - \ 2016
    Tijdschrift voor verloskundigen (2016)6. - ISSN 0378-1925 - 8 p.
    Een voedingsinventarisatie kan bijdragen aan een gerichte voedingsbegeleiding op maat aan zwangere vrouwen. Marloes Derksen zocht in de literatuur naar een goede methode en naar de succesfactoren en barrières voor verloskundigen voor het geven van voedingsbegeleiding.
    Screening of hot spots of emerging pollutants in soil, ground water and surface water in The Netherlands: breaking the vicious cycle.
    Lahr, J. ; Laak, T. ter; Derksen, A. - \ 2015
    Screening of hot spots of emerging pollutants in soil, ground water and surface water in the netherlands: breaking the vicious cycle
    Lahr, J. ; Laak, T.L. ter; Derksen, A. - \ 2014
    Screening van hot spots van nieuwe verontreinigingen : een pilot studie in bodem, grondwater en oppervlaktewater
    Lahr, J. ; Laak, T.L. ter; Derksen, A. - \ 2014
    Wageningen : Alterra (Alterra-rapport 2538) - 87
    bodemverontreiniging - waterverontreiniging - verontreinigende stoffen - toxicologie - geneesmiddelen - ecologische risicoschatting - biotesten - inventarisaties - soil pollution - water pollution - pollutants - toxicology - drugs - ecological risk assessment - bioassays - inventories
    Onder nieuwe verontreinigingen verstaan we stoffen die nog niet of niet volledig zijn gereguleerd en waarvan de milieurisico’s vaak onbekend zijn. Daarbij gaat het om stoffen als natuurlijke hormonen en hormoonverstorende stoffen (weekmakers, detergenten, brandvertragers, e.d.), humane geneesmiddelen, diergeneesmiddelen, nanodeeltjes en microplastics. In de ‘waterwereld’ is altijd meer aandacht besteed aan de nieuwe verontreinigingen dan binnen andere beleidsvelden. In de bodem zijn de aanwezigheid en de mogelijke risico’s grotendeels onbekend. In 2013 heeft een consortium van diverse onderzoeksinstanties en stakeholders een pilotonderzoek uitgevoerd naar de aanwezigheid en mogelijke risico’s van hormonen en geneesmiddelen in het systeem bodem - grondwater - oppervlaktewater.
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