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.

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The Missing Middle in SDG 2: The dual disconnect between global goals and local contexts, and between food production and consumption
Veldhuizen, Linda - \ 2018
Session S6
Barilla international forum on food and nutrition
Veldhuizen, Linda - \ 2018
Panel discussion on sustainable food systems at city level
Research and the UN SDGs : Contribution to the United Nations Sustainable Development Goals through research funded by the Dutch Ministry of Agriculture, Nature and Food Quality
Bouwma, Irene ; Veldhuizen, Linda ; Vugt, Simone van; Dias Bernardes Gil, Juliana ; Sluis, Theo van der; Booij, J. ; Jetten, T.H. ; Togt, P.L. van der - \ 2018
Wageningen : Wageningen University & Research - 11
Fish welfare in capture fisheries : A review of injuries and mortality
Veldhuizen, L.J.L. ; Berentsen, P.B.M. ; Boer, I.J.M. de; Vis, J.W. van de; Bokkers, E.A.M. - \ 2018
Fisheries Research 204 (2018). - ISSN 0165-7836 - p. 41 - 48.
Animal welfare - Commercial fisheries - External damage - Fishing gear - Teleost fish
Concerns about the welfare of production animals have extended from farm animals to fish, but an overview of the impact of especially capture fisheries on fish welfare is lacking. This review provides a synthesis of 85 articles, which demonstrates that research interest in fish welfare in capture fisheries has increased over time and that research has focused more on trawls and hooks than on purse seines, gillnets, traps and seines. We found that various gear characteristics, fish characteristics and context variables affect external injuries and mortality. Although the influence of gear characteristics on injuries and mortality can by nature not be compared across gear types, synthesis of the articles reviewed shows that fish characteristics and context variables influence injuries and mortality across gear types. In terms of fish characteristics, decreasing fish length and certain fish species were associated with higher mortality. In terms of context variables, greater capture depth and a longer fishing duration were associated with more injuries and higher mortality, whereas a large change in water temperature, a longer duration of air exposure and a high density in the net were associated with higher mortality. These relations provide options to reduce injuries and mortality from commercial capture fisheries. Implementation of such options, however, would require analysis of potential trade-offs between welfare benefits, and ecological and economic consequences.
The Missing Middle in Sustainable Development Goal 2
Veldhuizen, L.J.L. ; Boer, I.J.M. de; Brouwer, I.D. ; Giller, K.E. ; Janssen, S.J.C. ; Oosterveer, P.J.M. ; Slingerland, M.A. ; Zanten, H.H.E. van - \ 2017
World Café on the Missing Middle in Sustainable Development Goal 2
Veldhuizen, Linda - \ 2017
Scientific and data challenges in addressing SDG 2: the Missing Middle
Veldhuizen, Linda - \ 2017
Hoe duur is natuur : VPRO Tegenlicht
Hein, L.G. ; Veldhuizen, D. - \ 2017
Alles van waarde is weerloos. Dat geldt zeker voor de natuur, waar we steeds meer van kwijtraken.
Cathelicidins inhibit Escherichia coli-induced TLR2 and TLR4 activation in a viability-dependent manner
Coorens, Maarten ; Schneider, Viktoria A.F. ; Groot, A.M. De; Dijk, Albert I.J.M. Van; Meijerink, Marjolein ; Wells, Jerry M. ; Scheenstra, Maaike R. ; Veldhuizen, Edwin J.A. ; Haagsman, Henk P. - \ 2017
The Journal of Immunology 199 (2017)4. - ISSN 0022-1767 - p. 1418 - 1428.

Activation of the immune system needs to be tightly regulated to provide protection against infections and, at the same time, to prevent excessive inflammation to limit collateral damage to the host. This tight regulation includes regulating the activation of TLRs, which are key players in the recognition of invading microbes. A group of short cationic antimicrobial peptides, called cathelicidins, have previously been shown to modulate TLR activation by synthetic or purified TLR ligands and may play an important role in the regulation of inflammation during infections. However, little is known about how these cathelicidins affect TLR activation in the context of complete and viable bacteria. In this article, we show that chicken cathelicidin-2 kills Escherichia coli in an immunogenically silent fashion. Our results show that chicken cathelicidin-2 kills E. coli by permeabilizing the bacterial inner membrane and subsequently binds the outer membrane-derived lipoproteins and LPS to inhibit TLR2 and TLR4 activation, respectively. In addition, other cathelicidins, including human, mouse, pig, and dog cathelicidins, which lack antimicrobial activity under cell culture conditions, only inhibit macrophage activation by nonviable E. coli. In total, this study shows that cathelicidins do not affect immune activation by viable bacteria and only inhibit inflammation when bacterial viability is lost. Therefore, cathelicidins provide a novel mechanism by which the immune system can discriminate between viable and nonviable Gramnegative bacteria to tune the immune response, thereby limiting collateral damage to the host and the risk for sepsis.

Consumer interest in social sustainability issues of whitefish from capture fisheries in the north-east Atlantic
Veldhuizen, Linda J.L. ; Lans, Ivo A. van der; Berentsen, Paul B.M. ; Boer, Imke J.M. de; Bokkers, Eddy - \ 2017
Fish and Fisheries 18 (2017)3. - ISSN 1467-2960 - p. 527 - 542.
Choice modelling - concern - consumer preferences - relevance - trust - values

Capture fisheries in the north-east Atlantic account for approximately 10% of all fish consumed from capture fisheries globally. The literature shows that consumers show considerable interest in social sustainability of products in general and of fish specifically. This interest, however, has not yet been investigated for fish from the north-east Atlantic. The first objective of this study, therefore, was to investigate whether consumers are interested in social sustainability issues of whitefish from the north-east Atlantic by determining preferences for four social sustainability issues with distinct benefits in relation to a known reference point (i.e. approach to overfishing). The second objective of this study was to determine to what degree case-specific and general psychographic consumer characteristics explain preferences for these issues. Choice modelling results from an online survey among 457 Dutch consumers show that consumers have the strongest preference for the environmental sustainability issue approach to overfishing. In addition, results on the social sustainability issues showed that consumers prefer fish welfare over product quality, worker safety and local employment, indicating that in this case, consumers place animal benefits over personal, worker and community benefits. The case-specific psychographic characteristic concern contributed most to explaining preferences for the environmental sustainability issue, whereas the general psychographic characteristic personal relevance contributed most to explaining preferences for the social sustainability issues. This result is likely explained by the principal focus on MSC certification in markets for fish products, which caused consumers to form opinions (e.g. concern) on overfishing, but not on social sustainability.

Understanding social sustainability of capture fisheries
Veldhuizen, Linda J.L. - \ 2017
University. Promotor(en): Imke de Boer, co-promotor(en): Paul Berentsen; Eddy Bokkers. - Wageningen : Wageningen University - ISBN 9789462579644 - 159
fisheries - sustainability - animal welfare - cod - haddock - fishing methods - whitefish - northeast atlantic - visserij - duurzaamheid (sustainability) - dierenwelzijn - kabeljauw - schelvis - vismethoden - houting - noordoost atlantische oceaan

Fishing companies are faced with decreasing profitability and increasing competition. These companies can try to gain a competitive advantage by differentiating their products, e.g. by marketing new product attributes that consumers are interested in such as attributes relating to sustainability. Although consumers could be considerably interested in social sustainability of fish, this sustainability dimension has received little research interest so far. The main objective of this thesis is to understand social sustainability of capture fisheries. Social sustainability can be understood by applying the framework for social sustainability assessment, which consists of stakeholder consultation and issue selection, indicator development and quantification, and interpretation of the results, to the case considered. The case considered in this thesis was capture fisheries in the northeast Atlantic. Stakeholder consultation resulted in the identification of 27 social sustainability issues relevant for capture fisheries in the northeast Atlantic. Overall, social sustainability issues concerning working conditions, employees' job fulfilment and fish welfare were seen as more important than other social sustainability issues. Indicators were defined for the most important social sustainability issues of capture fisheries in the northeast Atlantic. To interpret values for each indicator, rubrics were developed that articulated levels of performance. Application of these indicators and their accompanying rubrics to a Norwegian trawler demonstrated that the indicators and rubrics provide insight into social sustainability at the level of the vessel, which can be used to identify potential room for improvement. To determine whether social sustainability issues can be used for product differentiation, consumer interest in social sustainability issues of whitefish from the northeast Atlantic was studied. Results from a choice modelling survey demonstrated that consumers prefer the issue fish welfare over the issues product quality, worker safety and local employment. Given the lack of overview of the knowledge on fish welfare, the most important social sustainability issue for consumers, the literature on this topic was reviewed to determine how the capture process in capture fisheries affects fish welfare, using the indicators external injuries and mortality. This review showed that scale, skin and fin injuries occur more frequently in trawls, purse seines, gillnets, traps and seines than in hooks, whereas hooking injuries occur in hooks only. Pressure injuries can occur in all gear types when deployed at greater depth. Trawls, purse seines and seines result in higher mortality than gillnets, hooks and traps. Mortality appears to increase with decreasing fish length, and differs across fish species. A greater capture depth and a longer fishing duration were associated with more external injuries and higher mortality, whereas a large change in water temperature, a longer duration of air exposure and a high density in the net were associated with higher mortality only. This thesis shows that application of the framework for social sustainability assessment to capture fisheries in the northeast Atlantic leads to an understanding of social sustainability that fishing companies can use to their advantage. In addition, this thesis shows that fishing companies in the northeast Atlantic need to start paying attention to fish welfare because consumers consider fish welfare the most important social sustainability issue of capture fisheries in the northeast Atlantic.

SIMGRO-Sobek : Simulatie van inundatie met SIMGRO en Sobek
Veldhuizen, Ab - \ 2016
Het Hoogheemraadschap De Stichtse Rijnlanden heeft de Kockengen casus doorgerekend met meerdere modelconcepten: 3Di, Sobek-Simgro, Hec-Ras, Wolk, in4d, etc. Dit heeft een grote oogst aan interessante inzichten opgeleverd die het hoogheemraadschap graag wil delen en bediscussiëren. Daarom organiseerde het Hoogheemraadschap i.s.m. STOWA op dinsdag 22 november 2016 het symposium 'Inundatie? Reken maar!', om te ontdekken hoe we inundaties kunnen simuleren en om van gedachten te wisselen over welke simulatiemodellen op dit vlak boven het maaiveld uitsteken
Casus Wateroverlast Kockengen 28 juli 2014
Veldhuizen, Ab - \ 2016
Effectief inlaatregiem zoetwatervoorziening Pilot modellering €ureyeopener voor het Hoogheemraadschap Hollands Noorderkwartier
Schipper, Peter ; Veldhuizen, Ab ; Kroes, Joop - \ 2016
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2757) - 35
waterbeheer - zoet water - regionaal beleid - verzilting - beschadigingen door zout - landbouw - noord-holland - polders - water management - fresh water - regional policy - salinization - salt injury - agriculture
In de Nederlandse delta is een uitgekiend waterbeheer van wezenlijk belang voor veiligheid en zoetwatervoorziening. Nu het klimaat verandert en kapitaal intensievere landbouw en andere watergebruikers meer zekerheid willen over de levering van zoet water, is de vraag hoe de zoetwatervoorziening kan worden verbeterd en robuust kan worden gemaakt. In veel gebieden hebben de waterbeheerders nog geen goed overzicht hoe het complexe systeem van zoetwateraanvoer tijdens droge perioden functioneert. Dit komt omdat de zoet-zoutpatronen sterk van plaats tot plaats verschillen, inlaten vaak diffuus van aard zijn en niet worden bemeten en watergebruik voor beregening niet wordt geregistreerd. Zij weten daarom in veel gebieden niet hoe effectief het huidige inlaatregiem is en welke maatregelen geschikt zijn om de zoetwatervoorziening te verbeteren. Het modelconcept de €ureyeopener is ontwikkeld om inzichten te bieden in de effectiviteit van de huidige zoetwateraanvoer en effecten van maatregelen. Het model berekent de wateraanvoerbehoefte, zoutgehalten, gewasschades en de kosten en baten van maatregelen. Voor het Hoogheemraadschap Hollands Noorderkwartier (HHNK) zijn de toepassingsmogelijkheden van dit modelconcept voor HHNK onderzocht door voor de Anna Paulownapolder een €ureyeopener model te maken. In dit gebied spelen voor HHNK nadrukkelijk beleidsvragen voor het voorzieningenniveau, de effecten van de nieuwe sluis bij IJmuiden, slim water management (efficiënter doorspoelen) en de extra zoet watervraag vanuit het Markermeer. Tot vóór de modelstudie had HHNK weinig zicht op de effectiviteit van het doorspoelregiem en de consequenties daarvan voor beregening en mogelijk optredende zoutschade. Het opgezette model geeft transparant inzicht in de uitwerking van het doorspoelregiem en de opbrengstderving van gewassen als het zoutgehalte van het polderwater verandert. In deze rapportage worden de stappen en het resulterende model beschreven. Ten opzichte van eerdere modellen is specifiek aandacht besteed aan de modellering van tulpen en de wijze waarop in het model de waterinlaat kan worden geoptimaliseerd. Met het oog op de samenwerking met Deltares en Bakelse Stroom voor het ontwikkelen van regio-specifieke €ureyeopener modellen hebben zij meegewerkt aan een interne werksessie om een conceptversie van het model te beoordelen en verbeterpunten te identificeren. Ook heeft Deltares bijgedragen aan het formuleren van aanbevelingen.
Chemisch-fysische schematisering van de bodem voor NHI-waterkwaliteit : naar een nieuwe fysisch-chemische schematisering van de Nederlandse bodem
Bolt, Frank van der; Walvoort, Dennis ; Vries, Folkert de; Hoogland, Tom ; Vroon, Henk ; Groenendijk, Piet ; Renaud, Leo ; Massop, Harry ; Veldhuizen, Ab ; Walsum, Paul van - \ 2016
Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2753) - 34
bodem - bodemkwaliteit - hydrologie - bodemeigenschappen - bodemkarteringen - soil - soil quality - hydrology - soil properties - soil surveys
Voor de ontwikkeling van het Nationaal Hydrologisch Instrumentarium-waterkwaliteit is een aanpak opgesteld om de fysisch-chemische schematisering van de bodem in Nederland verder te ontwikkelen. Op korte termijn (2017-2018) is een pragmatische werkwijze nodig om de bodemchemische parameters met bijbehorende schematisering in representatieve eenheden voor de operationele toepassing voor landelijke beleidsstudies te actualiseren. Het gebruik van de huidige fysischchemische karakterisering voor de bodemkaart 1:50.000 vormt de geëigende methode. Op de langere termijn is het de wens om het Nationaal Hydrologisch Instrumentarium-waterkwaliteit ook te kunnen inzetten voor regionale toepassingen. Dit kan alleen als er een gedetailleerde geostatistisch gesimuleerde 3D-bodemkaart aan ten grondslag ligt die recht doen aan regionale variabiliteit van de bodem.
Nowcasten actuele vullingsgraad bodem (met behulp van een model en remote sensing data)
Toorn, Linda ; Klutman, W.A.J. ; Hanhart-van den Brink, M. ; Heijkers, J. ; Bakel, J. van; Bastiaanssen, M. ; Spijker, Maarten ; Veldhuizen, A.A. - \ 2016
Amersfoort : Stowa (Stowa rapport 2016-20) - 57 p.
waterbeheer - waterbergend vermogen - remote sensing - wateropslag - ondergrondse opslag - grondwaterstand - water management - water holding capacity - water storage - underground storage - groundwater level
Een belangrijke opgave van de waterschappen is het voorkomen van wateroverlast en droogte. In deze studie is onderzocht of het haalbaar is om een instrument te ontwikkelen waarmee de hoeveelheid water die in de bodem kan worden geborgen, inzichtelijk kan worden gemaakt. Het gaat hierbij om een combinatie van data van satellieten (over verdamping en bodemvocht), aangevuld met data uit het veld en data van hydrologische modellen. Het zo verkregen inzicht in de ‘vullingsgraad’ van de bodem biedt veel potentie voor het operationele waterbeheer, waaronder peilbeheer. De informatie kan als inhoudelijke basis worden gebruikt om projecten als Slim Watermanagement vorm te geven.
Consumer interest in social sustainability issues of whitefish from capture fisheries in the northeast Atlantic
Veldhuizen, L.J.L. ; Lans, I.A. van der; Berentsen, P.B.M. ; Boer, I.J.M. de; Bokkers, E.A.M. - \ 2016
In: Book of abstracts WIAS Science Day 2016. - - p. 23 - 23.
Consumers are becoming increasingly interested in product attributes relating to sustainability. Consumers of whitefish mainly demonstrate an interest in environmental sustainability, since they are paying 10%-14% more for whitefish that is labelled as originating from sustainably managed fish stocks. However, studies have shown that consumers generally prefer improved social sustainability over improved environmental sustainability. Therefore, the objective of this study was to investigate consumer interest in social sustainability attributes of whitefish from the northeast Atlantic. The method used is choice modelling, a method to determine preferences for several product attributes based on consumer choices. The selected attributes are worker safety, product quality, fish welfare, local employment and approach to overfishing. Inclusion of the latter environmental sustainability attribute enabled a comparison of preferences for social sustainability in relation to preferences for environmental sustainability. A survey was developed that consisted of five choice sets in which each attribute was compared to one other attribute, and five choice sets in which three attributes were compared to two other attributes. This survey was completed by 457 respondents. The conditional logit model that was fitted to the data showed that people have the strongest preference for an improved approach to overfishing, followed by improved fish welfare, improved product quality, improved worker safety and improved local employment. This result indicates that people prefer environmental sustainability over social sustainability in the context of whitefish from the northeast Atlantic. Furthermore, this result indicates that in this context, people prefer social sustainability attributes relating to animals over social sustainability attributes relating to the product or to other people. However, a mixed logit model that was fitted to the data indicates that there is choice heterogeneity among respondents that cannot be explained from attribute preferences. Therefore, further analyses will focus on exploring explanatory variables such as concern, trust and values.
Inventarisatie van modellen van Alterra voor beheervragen Rijkswaterstaat : waterkwaliteit en ecologie
Veldhuizen, A.A. ; Assinck, F.B.T. - \ 2016
Wageningen : Alterra, Wageningen-UR (Alterra-rapport 2698) - 29 p.
waterbeheer - waterkwaliteit - modellen - ecologie - water management - water quality - models - ecology
Rijkswaterstaat wil modellen en modeltoepassingen, die de komende jaren voor het beheer van rijkswateren op het gebied van waterkwaliteit en ecologie nodig geacht worden, onder beheer en onderhoud brengen. Alterra heeft modellen voor waterkwaliteit en ecologie die voor beheervragen van Rijkswaterstaat gebruikt kunnen worden. Dit rapport geeft daar een overzicht van. Het rapport is opgesteld in het kader van het door Deltares in opdracht van Rijkswaterstaat uitgevoerde B&O Waterkwaliteitsmodelschematisaties. De modellen zijn onderverdeeld in modeltypen: Nutriënten procesmodellen, Nutriënten effectmodellen, Procesmodellen bestrijdingsmiddelen, Procesmodellen natuur, Effectmodellen natuur, Graadmeters natuur, Planningstools en Procesmodellen Water. Per modeltype is een factsheet opgesteld waarin globaal wordt aangegeven waarvoor de modellen bedoeld zijn, hoe ze werken, welke vragen ermee beantwoord kunnen worden, wat de belangrijkste output is en wat de mogelijkheden en beperkingen zijn. Tevens is er een lijst met modeltoepassingen opgesteld, waarvoor vragen zijn beantwoord.
Green Design for urban watermanagement in The Netherlands
Moors, E.J. ; Hattum, T. van; Veldhuizen, A.A. - \ 2015
- 31 p.
A method to assess social sustainability of captures fisheries: an application to a Norwegian trawler
Veldhuizen, L.J.L. ; Berentsen, P.B.M. ; Bokkers, E.A.M. ; Boer, I.J.M. de - \ 2015
In: Abstract Book of the 5th World Sustainability Forum, Basel, Switzerland. - - p. 136 - 136.
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