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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    Detection of Low Pathogenic Avian Influenza Virus Subtype H10N7 in Poultry and Environmental Water Samples During a Clinical Outbreak in Commercial Free-Range Layers, Netherlands 2017
    Germeraad, Evelien A. ; Elbers, Armin R.W. ; Bruijn, Naomi D. de; Heutink, Rene ; Voorst, Wendy van; Hakze-van der Honing, Renate ; Bergervoet, Saskia A. ; Engelsma, Marc Y. ; Poel, Wim H.M. van der; Beerens, Nancy - \ 2020
    Frontiers in Veterinary Science 7 (2020). - ISSN 2297-1769
    environmental sampling - LPAIV - outbreak - poultry - water

    Wild birds are the natural reservoir of the avian influenza virus (AIV) and may transmit AIV to poultry via direct contact or indirectly through the environment. In the Netherlands, a clinically suspected free-range layer flock was reported to the veterinary authorities by the farmer. Increased mortality, a decreased feed intake, and a drop in egg production were observed. Subsequently, an infection with low pathogenic avian influenza virus was detected. This study describes the diagnostic procedures used for detection and subtyping of the virus. In addition to routine diagnostics, the potential of two different environmental diagnostic methods was investigated for detecting AIV in surface water. AIV was first detected using rRT-PCR and isolated from tracheal and cloacal swabs collected from the hens. The virus was subtyped as H10N7. Antibodies against the virus were detected in 28 of the 31 sera tested. An intravenous pathogenicity index (IVPI) experiment was performed, but no clinical signs (IVPI = 0) were observed. Post-mortem examination and histology confirmed the AIV infection. Multiple water samples were collected longitudinally from the free-range area and waterway near the farm. Both environmental diagnostic methods allowed the detection of the H10N7 virus, demonstrating the potential of these methods in detection of AIV. The described methods could be a useful additional procedure for AIV surveillance in water-rich areas with large concentrations of wild birds or in areas around poultry farms. In addition, these methods could be used as a tool to test if the environment or free-range area is virus-free again, at the end of an AIV epidemic.

    De droge stad
    Hattum, Tim van - \ 2020
    towns - water - infrastructure - climatic change - weather
    Characterizing polar mobilities to understand the role of weather, water, ice and climate (WWIC) information
    Stewart, Emma J. ; Liggett, Daniela ; Lamers, Machiel ; Ljubicic, Gita ; Dawson, Jackie ; Thoman, Rick ; Haavisto, Riina ; Carrasco, Jorge - \ 2020
    Polar Geography 43 (2020)2-3. - ISSN 1088-937X - p. 95 - 119.
    climate services - ice and climate (WWIC) information - information needs - mobile sectors - mobilities - Polar Regions - water - Weather

    The Polar Regions are undergoing rapid environmental change while simultaneously witnessing growth and diversification of human activity. These changes call for more responsive, detailed and specialized weather, water, ice and climate (WWIC) information services so that the risks related to human activities can be minimized. Drawn from an extensive literature review this article provides an examination of selected sectors and their uses of WWIC information services in order to offer an initial understanding of diverse environmental forecasting needs. Utilizing a mobilities perspective we provide a characterization of mobility in the Polar Regions to help contextualize current WWIC uses and needs. Using four illustrative case studies of polar mobilities (community activities; cruise tourism; shipping; and government and research operations) the article explores two broad questions: (1) How are mobilities characterized in the Polar Regions? (2) What is known about the role of WWIC information in Polar mobilities? The findings suggest an incongruence between the information provided and the ways in which WWIC information is both used and needed by various sectors. Knowledge gaps are outlined that suggest more efforts are needed to understand the highly complex set of interconnections between WWIC users, providers, mobilities and decision-making across the Polar Regions.

    Mapping weather, water, ice and climate (WWIC) information providers in Polar Regions: who are they and who do they serve?
    Haavisto, Riina ; Lamers, Machiel ; Thoman, Rick ; Liggett, Daniela ; Carrasco, Jorge ; Dawson, Jackie ; Ljubicic, Gita ; Stewart, Emma - \ 2020
    Polar Geography 43 (2020)2-3. - ISSN 1088-937X - p. 128 - 130.
    climate services - ice and climate (WWIC) information - information providers - Polar Regions - water - Weather

    Environmental conditions in Polar Regions are becoming more dynamic due to climate change. As sea ice melts, the range of human activities in Polar Regions are projected to increase, while weather conditions are becoming more extreme and unpredictable. Provision and use of weather, water, ice and climate (WWIC) information plays a key role in ensuring that polar activities are conducted as safely as possible and can contribute to a reduction of the environmental footprint of human activities. In this article, we explore the WWIC information provider landscape in a polar context, drawing on a database we compiled to characterize the diversity of providers. The database is built on available literature and on an extensive desk-based research of WWIC information provider websites. We analyse the 374 providers categorized by (a) institutional background (public vs private), (b) the position of the provider relative to activities in the WWIC information space, and (c) the users they serve. While governmental institutions have a strong presence in information provision, new types of providers are now entering the scene. Scientific actors seem to play a substantial role as users as well as major providers of WWIC information services.

    Water food nexus
    Demmers, Ivo - \ 2019
    nexus - water - food
    Water food nexus
    Food and Water Research Program
    Demmers, Ivo - \ 2019
    food systems - food security - cities - water
    overview and opportunities for collaboration with WUR.
    Help feed the world population with the use of drainage | WURcast
    Ritzema, H.P. - \ 2019
    Wageningen : Wageningen University & Research
    agriculture - drainage - food production - irrigation - salts - water
    Nature Based Solutions
    Spijker, J.H. - \ 2019
    urban planning - urban areas - ecosystem services - greening - health - water - heat resistance - trees - climatic change - water holding capacity - biodiversity - stress - population education - mobility
    Voor de uitdagingen van de stad 21e eeuw: 25 jaar VBG, Wageningen 22 maart 2019
    Cooling Urban Water Environments : Design Prototypes for Design Professionals
    Cortesão, J. ; Lenzholzer, S. ; Klok, Lisette ; Jacobs, C.M.J. ; Kluck, Jeroen - \ 2019
    In: PLEA 2018: Smart and Healthy Within the Two-Degree Limit. - PLEA - p. 520 - 525.
    Urban Heat - Research Through Design - Prototype - Water bodies - Thermal sensation
    This paper presents five design prototypes for cool urban water environments developed in the 'Really cooling water bodies in cities' (REALCOOL) project. The REALCOOL prototypes address an urgent need: urban water bodies, such as ponds or canals, are often assumed to cool down their surroundings during days with heat stress, whereas recent research shows that this is not always the case and that urban water bodies may actually have warming effects too. There are, however, indications that shading, vaporising water, and proper ventilation can keep water bodies and their surroundings cooler. Yet, it is necessary to explore how these strategies can be optimally combined and how the resulting design guidelines can be communicated to design professionals. The REALCOOL prototypes communicate the spatial layout and biometeorological effects of such combinations and assist design decisions dealing with urban water environments. The micrometeorological simulations with Envi­met showed that the prototypes led to local reductions on daytime PET from 1 °C to 7 °C, upon introducing shade. Water mist and fountains were also cooling solutions. The important role of ventilation was confirmed. The paper discusses and concludes about the use of the prototypes as tools for urban design practice.
    Self-Assembly of Functional Discrete Three-Dimensional Architectures in Water
    Taylor, Lauren L.K. ; Riddell, Imogen A. ; Smulders, Maarten M.J. - \ 2019
    Angewandte Chemie-International Edition 58 (2019)5. - ISSN 1433-7851 - p. 1280 - 1307.
    cages - DNA architectures - peptide assemblies - self-assembly - water

    Construction of discrete, self-assembled architectures in water has gained significant interest in recent years as a wide range of applications arises from their defined 3D structure. In this review we jointly discuss the efforts of supramolecular chemists and biotechnologists who previously worked independently, to tackle discipline-specific challenges associated with construction of assemblies from synthetic and bio-derived components, respectively. Going forward, a more interdisciplinary research approach will expedite development of complexes with real-world applications that exploit the benefits of compartmentalisation. In support of this, we summarise advances made in the development of discrete, water-soluble assemblies, with particular focus on their current and prospective applications. Areas where understanding and methodologies can be transferred from one sector to the adjacent field are highlighted in anticipation this will yield advances not possible from either field alone.

    Uitdagingen van de stad 21e eeuw
    Spijker, J.H. - \ 2018
    urban planning - urban areas - mobility - greening - health - water - heat resistance - trees - climatic change - water holding capacity - biodiversity - stress - population education
    Nieuwe aanpak medicijnresten in afvalwater
    Langenhoff, A.A.M. - \ 2018
    water - waste water treatment - sludges - water treatment - bacteria
    New approach to medicine residues in wastewater
    Langenhoff, A.A.M. - \ 2018
    water - sludges - water treatment - waste water treatment - residual streams
    Combining food-based dietary recommendations using Optifood with zinc-fortified water potentially improves nutrient adequacy among 4- to 6-year-old children in Kisumu West district, Kenya
    Kujinga, Prosper ; Borgonjen-van den Berg, Karin J. ; Superchi, Cecilia ; Hove, Hermine J. ten; Onyango, Elizabeth Opiyo ; Andang'o, Pauline ; Galetti, Valeria ; Zimmerman, Michael B. ; Moretti, Diego ; Brouwer, Inge D. - \ 2018
    Maternal and Child Nutrition 14 (2018)2. - ISSN 1740-8695
    children - diets - Optifood - water - zinc
    Children in developing countries often face multiple micronutrient deficiencies. Introduction of zinc-fortified water can increase zinc intake, but additional recommendations are required to address overall diet nutrient adequacy. We developed and tested food-based recommendations (FBRs) that included zinc-fortified water for children aged between 4 and 6 years from rural Kenya to achieve the best possible nutrient adequacy. Dietary intakes of 60 children aged 4–6 years, from Kisumu West district, Kenya, were assessed using a quantitative multipass 24-hr recall. Linear programming model parameters were derived, including a list of foods consumed, median serving sizes, and distribution of frequency of consumption. By using the Optifood linear programming tool, we developed FBRs for diets including zinc-fortified water. FBRs with nutrient levels achieving ≥70% recommended nutrient intake (RNI) of the World Health Organization/Food and Agriculture Organization of the United Nations RNI for most of the 12 considered nutrients were selected as the final recommendations for the children. With no FBRs and no zinc-fortified water, percent RNI coverage range was between 40% and 76% for zinc, improving to 66–101% after introduction of zinc-fortified water. The final set of FBRs achieved nutrient adequacy for all nutrients except for vitamin A (25% RNI) and folate (68% RNI). Introduction of zinc-fortified water combined with FBRs will likely improve the nutrient adequacy of diets consumed by children in Kenya but needs to be complemented with alternative interventions to ensure dietary adequacy.
    What is water doing for us? | WURcast
    Dijksma, R. - \ 2017
    Wageningen : WURcast
    rain - water - agriculture - drinking water - climatic change - nature
    Biodiversity and climate determine the functioning of Neotropical forests
    Poorter, L. ; Sande, M.T. van der; Arets, E.J.M.M. ; Ascarrunz, N. ; Enquist, B.J. ; Finegan, B. ; Licona, J.C. ; Martinez-Ramos, M. ; Mazzei, L. ; Meave, J. ; Munoz, R. ; Nytch, C.J. ; Oliveira, A.A. de; Perez-Garcia, E.A. ; Prado-Junior, J.A. ; Rodriguez-Velazquez, J. ; Ruschel, A.R. ; Salgado Negret, B. ; Schiavini, I. ; Swenson, N.G. ; Tenorio, E.A. ; Thompson, J. ; Toledo, M. ; Uriarte, M. ; Hout, P. van der; Zimmerman, J.K. ; Pena Claros, M. - \ 2017
    Wageningen University & Research
    biodiversity - biomass - carbon - ecosystem functioning - forest dynamics - productivity - soil fertility - tropical forest - water
    Tropical forests account for a quarter of the global carbon storage and a third of the terrestrial productivity. Few studies have teased apart the relative importance of environmental factors and forest attributes for ecosystem functioning, especially for the tropics. This study aims to relate aboveground biomass (AGB), biomass dynamics (i.e., net biomass productivity and its underlying demographic drivers: biomass recruitment, growth and mortality) to forest attributes (tree diversity, community-mean traits, and stand basal area) and environmental conditions (water availability, soil fertility and disturbance). We used data from 26 sites, 201 one-ha plots and >92,000 trees distributed across the Neotropics. We quantified for each site water availability and soil total exchangeable bases and for each plot three key community-weighted mean functional traits that are important for biomass stocks and productivity. We used structural equation models to test the hypothesis that all drivers have independent, positive effects on biomass stocks and dynamics. Of the relationships analysed, vegetation attributes were more frequently significantly associated with biomass stocks and dynamics than environmental conditions (in 67% versus 33% of the relationships). High climatic water availability increased biomass growth and stocks, light disturbance increased biomass growth, and soil bases had no effect. Rarefied tree species richness had consistent positive relationships with biomass stocks and dynamics, probably because of niche complementarity, but was not related to net biomass productivity. Community-mean traits were good predictors of biomass stocks and dynamics. Water availability has a strong positive effect on biomass stocks and growth, and a future predicted increase in (atmospheric) drought might, therefore, potentially reduce carbon storage. Forest attributes – including species diversity and community-weighted mean traits – have independent and important relationships with AGB stocks, dynamics, and ecosystem functioning, not only in relatively simple temperate systems, but also in structurally complex hyper-diverse tropical forests.
    De energiesector als lichtend of verblindend voorbeeld?
    Giezen, M. ; Brouwer, Stijn ; Roest, Kees ; Vliet, B.J.M. van - \ 2017
    H2O online (2017). - 6
    energie - water - hernieuwbare energie - systemen - economie - energy - water - renewable energy - systems - economics
    De energiesector wordt in de watersector veelvuldig genoemd als voorbeeld voor de transitie richting een circulaire economie. In hoeverre werkt dit verhelderend of juist verblindend? In deze literatuurstudie laten de auteurs hun licht schijnen op de energiesector als voorbeeld wanneer het gaat om de introductie van nieuwe decentrale technieken. Vanuit zowel een technologisch, economisch, sociaal-cultureel als een institutioneel perspectief brengen de auteurs de contextuele systeemveranderingen die van invloed kunnen zijn op toepassing van decentrale technieken in kaart. Hiermee worden de overeenkomsten en verschillen tussen energie- en watersectoren helder en ontstaat ruimte voor relativering en nuance.
    Becoming an Engineer or a Lady Engineer : Exploring Professional Performance and Masculinity in Nepal’s Department of Irrigation
    Liebrand, Janwillem ; Udas, Pranita Bhushan - \ 2017
    Engineering Studies 9 (2017)2. - ISSN 1937-8629 - p. 120 - 139.
    Engineering - gender - irrigation - masculinities - Nepal - water
    In this article, using the Department of Irrigation in Nepal as a case study, we argue that professional performance in irrigation engineering and water resources development is gendered and normalised as ‘masculine’. In Nepal, the masculinity of professional performance in irrigation engineering is located in intersections of gender, class, caste, ethnicity, sexuality, nationality and disciplinary education, and hinders especially female engineers to perform as a ‘normal’ engineer. Our analysis is based on interviews with male and female engineers in the department, documentation research, and ethnographic observations in the period 2005–2011. Our study suggests that professional performances and engineering identities in the organisation have always been tied to performances of masculinity. This implies that career prospects in the Nepalese irrigation department for female engineers remain grim; because for them to succeed and belong, they have to reconcile the near incommensurable: a performance of a ‘lady engineer’ with that of a ‘normal’ engineer.
    Monitoring Groningen Sea Ports : non-indigenous species and risks from ballast water in Eemshaven and Delfzijl
    Slijkerman, D.M.E. ; Glorius, S.T. ; Gittenberger, A. ; Weide, B.E. van der; Bos, O.G. ; Rensing, M. ; Groot, G.A. de - \ 2017
    Den Helder : Wageningen Marine Research (Wageningen Marine Research rapport C045/17 A) - 81
    havens - mariene gebieden - geïntroduceerde soorten - ballast - water - mariene ecologie - harbours - marine areas - introduced species - ballast - water - marine ecology
    Evaluating rainwater harvesting systems in arid and semi-arid regions
    Ammar, Adham Ali - \ 2017
    Wageningen University. Promotor(en): C.J. Ritsema, co-promotor(en): M.J.P.M. Riksen; M. Quessar. - Wageningen : Wageningen University - ISBN 9789463431460 - 207
    water harvesting - rain - water - arid zones - semiarid zones - geographical information systems - water management - climatic change - tunisia - iraq - regenwateropvang - regen - water - aride klimaatzones - semi-aride klimaatzones - geografische informatiesystemen - waterbeheer - klimaatverandering - tunesië - irak

    Rainwater harvesting (RWH) is an ancient traditional technology practised in many parts of the world, especially in arid and semi-arid regions (ASARs). ASARs represent 40% of the earth’s land surface and are characterised by low average annual rainfall and uneven temporal and spatial distributions of that rainfall. In these regions an efficient use of the limited amount of rainfall available is important, e.g. by collecting and using surface runoff (water harvesting). Lately, access to water for agriculture and domestic use has become worse because of increasing population, higher levels of human activity and the impacts of climate change. The inhabitants of ASARs have developed several RWH techniques to increase the water availability, thus coping with water shortages. RWH is an important mitigation strategy to the impact of climate change on water availability in ASARs.

    Four main methodologies of site selection were categorised, ranging from those based only on biophysical criteria to more integrated approaches that include socioeconomic criteria. Our analysis suggests that the integration of multi-criteria analysis (MCA) with a geographic information system (GIS) is the most advanced approach. It offers high potential in data-poor regions; GIS-based hydrological modelling is always recommended for data-rich regions.

    The potential for RWH in wadi Horan (western desert of Iraq) was identified using a GIS-based suitability model. The method for selecting suitable sites for RWH was then further developed into an evaluation and decision support tool for assessing the overall performance of existing RWH systems by integrating engineering, biophysical and socioeconomic criteria using MCA supported by GIS. It was tested in the wadi Oum Zessar in southeastern Tunisia.

    A simple but generally applicable water harvesting model (WHCatch) was developed to investigate and optimise the performance of the RWH systems under various scenarios of design and management, It was tested in wadi Oum Zessar. The advantages of simulating long-term water balances at the sub-catchment level for improving our understanding of hydrological processes in an RWH system are emphasised. Several solutions for optimising RWH performance in various scenarios are provided.

    Finally, the impact of climate change on existing RWH systems in the Oum Zessar watershed under current and future scenarios of climate was investigated. The downscaled maximum and minimum temperatures clearly indicated an increasing trend in the mean monthly temperature and the generated precipitation tended to decrease in the future. It was shown that the combination of changing the flow direction and the spillway height had a large impact on the performance of the RWH systems under current and future conditions. Water management and structural design at the sub-catchment level plays a more important role than climate change in the performance of RWH.

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