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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    Hydrometeorological monitoring using opportunistic sensing networks in the Amsterdam metropolitan area
    Vos, L.W. De; Droste, A.M. ; Zander, M.J. ; Overeem, A. ; Leijnse, H. ; Heusinkveld, B.G. ; Steeneveld, G.J. ; Uijlenhoet, R. - \ 2020
    Bulletin of the American Meteorological Society (2020). - ISSN 0003-0007 - 15 p.
    Several opportunistic sensors (private weather stations, commercial microwave links and smartphones) are employed to obtain weather information and successfully monitor urban weather events.
    The ongoing urbanisation and climate change urges further understanding and monitoring of weather in cities. Two case studies during a 17-day period over the Amsterdam metropolitan area, the Netherlands, are used to illustrate the potential and limitations of hydrometeorological monitoring using non-traditional and opportunistic sensors. We employ three types of opportunistic sensing networks to monitor six important environmental variables: (1) air temperature estimates from smartphone batteries and personal weather stations; (2) rainfall from commercial microwave links and personal weather stations; (3) solar radiation from smartphones; (4) wind speed from personal weather stations; (5) air pressure from smartphones and personal weather stations; (6) humidity from personal weather stations. These observations are compared to dedicated, traditional observations where possible, although such networks are typically sparse in urban areas. First we show that the passage of a front can be successfully monitored using data from several types of non-traditional sensors in a complementary fashion. Also we demonstrate the added value of opportunistic measurements in quantifying the Urban Heat Island (UHI) effect during a hot episode. The UHI can be clearly determined from personal weather stations, though UHI values tend to be high compared to records from a traditional network. Overall, this study illustrates the enormous potential for hydrometeorological monitoring in urban areas using non-traditional and opportunistic sensing networks.
    Battery temperature, pressure and light intensity readings from smartphones in the Amsterdam metropolitan area
    Overeem, Aart ; Vos, Lotte de; Droste, Arjan ; Zander, Marjanne - \ 2019
    Wageningen University & Research
    smartphones - weather - observations - urban - hydrological monitoring - non-traditional sensors - opportunistic sensors
    Two datasets of smartphone readings of battery temperature, pressure and light intensity in the Amsterdam metropolitan area, the Netherlands, from June 2017. Included is a readme.txt file with details on the dataset. The datasets also include metadata, e.g. regarding the accuracy of the readings or the status of the phone. They also contain humidity and temperature observations, but these have not been investigated yet. The data are meant to provide city-average estimates. Hence, location information is not needed and has been removed in order to comply with the EU General Data Protection Regulation
    Der Verbraucherbegriff im 21. Jahrhundert – Verbraucherbürger und Verbraucherproduzent
    Purnhagen, K. ; Wahlen, S. - \ 2017
    In: Verbraucherrecht 2.0 / Micklitz, Hans, Reisch, Lucia, Joost, Gesche, Zander-Hayat, Helga, Baden-Baden : NOMOS - ISBN 9783848741878
    Die digitalisierende Alltagswelt der vergangenen Jahre geht mit einem sozialen und ökonomischen Wandel einher. In der digitalen Welt scheinen die traditionellen Rollenzuweisungen von Markteilnehmern als Anbieter und Nachfrager zu verwischen. Es wird vermehrt vom Verbraucherbürger bzw. vom Verbraucher-Produzent (Prosument) gesprochen, der insbesondere organisiert in der Sharing Economy mit scheinbar veränderter Stellung am Markt teilnimmt. Frage dieses Gutachtens ist, ob sich aus diesem gesellschaftlichen Wandel die Notwendigkeit ergibt, § 13 BGB zu modifizieren.
    Inspanningsadviezen voor snoekbaars, baars, blankvoorn en brasem in het IJssel-/Markermeer : visseizoen 2017/2018
    Tiën, Nicola ; Hammen, Tessa van der; Vries, Pepijn de; Schram, Edward ; Steenbergen, Josien - \ 2017
    IJmuiden : Wageningen Marine Research (Wageningen Marine Research rapport C018/17) - 79
    snoekbaars - baars - rutilus rutilus - abramis brama - vissen - visserij - visstand - ijsselmeer - pike perch - bass - rutilus rutilus - abramis brama - fishes - fisheries - fish stocks - lake ijssel
    Het Ministerie van Economische Zaken wil komen tot wetenschappelijk onderbouwd duurzaam beheer van snoekbaars, baars, blankvoorn en brasem in het IJsselmeer en Markermeer. Voor alle vier bestanden is de beleidsdoelstelling voor visseizoen 2017/2018 geformuleerd in het document “Toekomstbeeld visstand IJsselmeer/Markermeer – synthesedocument’. Hierin wordt in ieder geval gestreefd naar ‘een evenwichtiger lengte-opbouw van de bestanden met meer grotere exemplaren en een groter aantal jaarklassen’, als ook ‘een toename van de (paai)bestanden’. Voor het behalen van deze beleidsdoelstellingen zijn inspanningsadviezen gevraagd over de staandwantvisserij en de zegenvisserij, gecombineerd voor het IJsselmeer en Markermeer.
    Grain legume decline and potential recovery in European agriculture : a review
    Zander, Peter ; Amjath-Babu, T.S. ; Preissel, Sara ; Reckling, Moritz ; Bues, Andrea ; Schläfke, Nicole ; Kuhlman, Tom ; Bachinger, Johann ; Uthes, Sandra ; Stoddard, Fred ; Murphy-Bokern, Donal ; Watson, Christine - \ 2016
    Agronomy for Sustainable Development 36 (2016)2. - ISSN 1774-0746 - 20 p.
    Diversification - Economic pressures - Land use change - Protein crops - Specialization - Sustainable land use

    Sustainable development of agriculture is at the core of agricultural policy debates in Europe. There is a consensus that diversification of cropping would support sustainable development. However, a reduction in legume cultivation has been observed in the EU during the last decades. This decline has induced, in turn, a deficit of proteins and a reduction of ecosystem services provided by legumes. Therefore, we analysed the mechanisms that shape agricultural systems to identify leverage points for reviving European legume production. Specifically, we reviewed the factors that affect the market and non-market value of legumes and the relevant agricultural policies. We characterized the decline in legume cropping as an outcome of the dominance of economic forces that favour specialization of production systems over diversification. We found that the value of market outputs of legumes per unit area is relatively low and volatile, with a 25–78 % variation in pea gross margins, which reduces market competitiveness. We observed that the value of system-internal outputs of legumes such as the nitrogen fixed, of 130 to 153 kg N ha−1; crop protection services that reduce agrochemical costs, by 20–25 % in cereals; and yield enhancements of subsequent crops, of 0.2 to 1.6 t ha−1 in cereals, are often underestimated. In addition, markets fail to translate external effects of legumes such as biodiversity enhancement, reduction in emissions, of up to 50 % in N2O, and soil improvements into economic benefits. Current policies support legumes through selected mechanisms such as ecological focus areas, agri-environmental programmes and sparse coupled support measures. Domestic cultivation of legumes could be supported through trade policies such as import restrictions on genetically modified soybean or new mechanisms to appreciate non-market outputs including payments for ecosystem services and carbon markets. In addition, development of new value chains, niche markets, scaling-up of plant breeding efforts and dissemination of information is required.

    De invloed van de concentratie vrij koolstofdioxide in het water op de prestaties van snoekbaars
    Blom, E. ; Remmerswaal, Rene ; Janssen, Jac ; Schram, E. - \ 2015
    IMARES (Rapport / IMARES C183/15) - 16
    snoekbaars - kooldioxide - concentratie - prestatieniveau - visteelt - viskwekerijen - aquacultuur - pike perch - carbon dioxide - concentration - performance - fish culture - fish farms - aquaculture
    Vangstadviezen voor snoekbaars, baars, blankvoorn en brasem in het IJsselmeer en Markermeer
    Tien, N.S.H. ; Hammen, T. van der; Hal, R. van - \ 2015
    IJmuiden : IMARES (Rapport / IMARES Wageningen UR C045/15) - 68
    visbestand - monitoring - visserijbeleid - natura 2000 - snoekbaars - baars - rutilus rutilus - abramis brama - ijsselmeer - fishery resources - monitoring - fishery policy - natura 2000 - pike perch - bass - rutilus rutilus - abramis brama - lake ijssel
    Het ministerie wil in het kader van de visserijwet en de Kaderrichtlijn Water komen tot wetenschappelijk onderbouwd beheer van de belangrijkste commerciële schubvisbestanden. In 2013 zijn vangstadviezen gegeven voor vier schubvissoorten in het IJsselmeer en Markermeer; snoekbaars, baars, brasem en blankvoorn. In het huidige rapport worden voor het visseizoen 2015/2016 opnieuw vangstadviezen gegeven. De doelstelling is aangescherpt van ‘voorkomen van achteruitgang’ naar ‘herstel’ van de bestanden. Bovendien zijn vanaf juli 2014 sterke vangstbeperkingen voor deze soorten. D
    Hoe giftig zijn ammonia en nitraat voor snoekbaars?
    Schram, E. ; Roques, J.A.C. ; Kuijk, T. van; Abbink, W. ; Heul, J.W. van der; Vries, P. de; Bierman, S.M. ; Vis, J.W. van de; Flik, G. - \ 2014
    Aquacultuur 29 (2014)1. - ISSN 1382-2764 - p. 12 - 17.
    snoekbaars - recirculatie aquacultuur systemen - aquacultuur - nitraat - ammoniak - voeropname - pike perch - recirculating aquaculture systems - aquaculture - nitrate - ammonia - feed intake
    In intensieve recirculatiesystemen lopen vissen het risico blootgesteld te worden aan ammonia en nitraat. Hoe hoog mogen de nitraat- en ammoniaconcentratie zijn zonder dat dit negatieve effecten heeft op de vissen? IMARES onderzocht dit in samenwerking met de Radboud Universiteit Nijmegen en de Universiteit van Amsterdam voor juveniele snoekbaars. Conclusie: de ammonia (NH3) concentratie moet onder de 0.05 mg NH3-N/I gehouden worden. Van nitraat lijken juveniele snoekbaarzen zelfs bij 358 mg NO3-N/I nog weinig hinder te ondervinden.
    The environmental role of protein crops in the new Common Agricultural Policy
    Bues, A. ; Preissel, S. ; Reckling, M. ; Zander, P. ; Kuhlman, T. ; Topp, K. ; Watson, C. ; Lindström, K. ; Stoddard, F.L. ; Murphy-Bokern, D. - \ 2013
    Brussels : European Parliament (IP/B/AGRI/IC/ 2012-067) - 113
    Welke waarde hebben rundveerassen voor de Nederlandse burger?
    Hoving, A.H. ; Zander, K. ; Hiemstra, S.J. ; Groot, L. de - \ 2011
    Zeldzaam huisdier 36 (2011)4. - ISSN 0929-905X - p. 22 - 22.
    rundveerassen - zeldzame rassen - cattle breeds - rare breeds
    In de Nederlandse en Europese melkveehouderij zijn lokale rundveerassen voor groot deel vervangen door het hoogproductieve Holstein Friesian melkveeras. Het Centrum voor Genetische Bronnen Nederland (CGN) van Wageningen UR heeft in het EURECA-project (mede gefinancierd door de Europese Commissie) onderzocht wat nodig is om lokale rundveerassen in stand te houden.
    CA2AFRICA: Conservation Agriculture in Africa: Analyzing and foreseeing its impact - Comprehending its adoption
    Corbeels, M. ; Schuler, J. ; Ndah, H.T. ; Uthes, S. ; Zander, P. ; Apina, T. ; Koala, S. ; Triomphe, B. ; Mourid, M. El; Traore, K. ; Nyagumbo, I. ; Mrabet, R. ; Penot, E. ; Gomez-MacPherson, H. ; Graaff, J. de; Tittonell, P.A. - \ 2011
    Nosema apis en Nosema ceranae. Achtergrondinformatie Nosema
    Steen, J.J.M. van der - \ 2010
    Wageningen : Plant Research International
    honingbijen - apis mellifera - nosema apis - bijenziekten - infecties - insectenpathogene protozoën - nosemaziekte - protozoëninfecties - honey bees - apis mellifera - nosema apis - bee diseases - infections - entomopathogenic protozoa - nosema disease - protozoal infections
    Nosema apis en Nosema ceranae komen beide voor in de volwassen honingbij Apis mellifera. Beide nosema’s worden zowel apart als samen in de honingbij gevonden. Tegenwoordig komt N. ceranae meer voor dan N. apis. Omdat in Noord Europa, de schadelijke gevolgen van de N. ceranae besmettingen min of meer overeen komen met die van N. apis worden bij de preventie en bestrijding de twee soorten vooralsnog gelijk behandeld. Wanneer gesproken wordt over nosema worden hiermee beide nosemasoorten samen bedoeld Achtergrondinformatie: Nosema apis en Nosema ceranae komen beide voor bij A. mellifera. De eerste beschrijvingen van de parasiet N. apis bij Apis mellifera en de gevolgen van deze parasitering zijn 100 jaar geleden beschreven door Zander [18]. Besmettingen van A. mellifera met N. ceranae zijn van een meer recente datum. Fries et al. [6] hebben N. ceranae beschreven. Dat N. ceranae voorkomt bij de Europese honingbij en N. apis ook de Aziatische honingbij kan infecteren weten we sinds een paar jaar. Higes et al. [9] ontdekten in 2006 als eerste het voorkomen van N. cerana in de Europese honingbij in Spanje. N. ceranae komt al langer, zeker sinds 1998, bij de Europese honingbij voor zonder dat dit opgemerkt was [13]. In Nederland heeft R. van der Zee in 2007 de eerste N. ceranae infectie op Terschelling aangetoond. Beide parasieten kunnen op een bijenstand tegelijk voorkomen zoals in Nederland aangetoond is bij de landelijke monitoring van PRI bijen in 2008. Hieruit bleek dat N. apis op 10% van de standen voorkomt, N. ceranae op 87% en een combinatie van beide nosemasoorten is vastgesteld op 6% van de 170 bemonsterde bijenstanden. Op een aantal standen werd geen nosema gevonden
    A Generic Bio-Economic Farm Model for Environmental and Economic Assessment of Agricultural Systems
    Janssen, S.J.C. ; Louhichi, K. ; Kanellopoulos, A. ; Zander, P. ; Flichman, G. ; Hengsdijk, H. ; Meuter, E.C. ; Andersen, E. ; Belhouchette, H. ; Blanco, M. ; Borkowski, N. ; Heckelei, T. ; Hecker, M. ; Li, Hongtao ; Oude Lansink, A.G.J.M. ; Stokstad, G. ; Thorne, P. ; Keulen, H. van; Ittersum, M.K. van - \ 2010
    Environmental Management 46 (2010)6. - ISSN 0364-152X - p. 862 - 877.
    nonpoint-source pollution - land-use - cropping systems - mediterranean environment - integrated assessment - programming-model - simulation-model - policy-analysis - cropsyst - framework
    Bio-economic farm models are tools to evaluate ex-post or to assess ex-ante the impact of policy and technology change on agriculture, economics and environment. Recently, various BEFMs have been developed, often for one purpose or location, but hardly any of these models are re-used later for other purposes or locations. The Farm System Simulator (FSSIM) provides a generic framework enabling the application of BEFMs under various situations and for different purposes (generating supply response functions and detailed regional or farm type assessments). FSSIM is set up as a component-based framework with components representing farmer objectives, risk, calibration, policies, current activities, alternative activities and different types of activities (e.g., annual and perennial cropping and livestock). The generic nature of FSSIM is evaluated using five criteria by examining its applications. FSSIM has been applied for different climate zones and soil types (criterion 1) and to a range of different farm types (criterion 2) with different specializations, intensities and sizes. In most applications FSSIM has been used to assess the effects of policy changes and in two applications to assess the impact of technological innovations (criterion 3). In the various applications, different data sources, level of detail (e.g., criterion 4) and model configurations have been used. FSSIM has been linked to an economic and several biophysical models (criterion 5). The model is available for applications to other conditions and research issues, and it is open to be further tested and to be extended with new components, indicators or linkages to other models.
    Policy relevance of three integrated assessment tools - A comparison with specific reference to agricultural policies
    Uthes, S. ; Fricke, K. ; Konig, H. ; Zander, P. ; Ittersum, M.K. van; Sieber, S. ; Helming, K. ; Piorr, A. ; Muller, K. - \ 2010
    Ecological Modelling 221 (2010)18. - ISSN 0304-3800 - p. 2136 - 2152.
    land-use change - european-union - farm models - impact - biodiversity - uncertainty - netherlands - scenarios - countries - framework
    The Common Agricultural Policy (CAP), a system of market support instruments, direct income transfers, and rural development measures, has been put through an ongoing reform process in recent decades. This paper introduces three policy impact assessment tools (SIAT, SEAMLESS-IF, MEA-Scope tool) and analyses how these tools have responded to a number of challenges for integrated assessment modelling as reported in the international literature. Significant progress has been made with regard to modelling linkages whereas other challenges, particularly those related to issues of scale and uncertainty management, require further efforts. It is also analysed which CAP instruments are represented and what kinds of effects can be analysed at different scales. Market instruments and direct payments are comparatively well represented, while the ability to model rural development measures is mostly beyond the scope of these tools. Because each tool has found a different solution for coping with the common challenges of integrated assessment modelling, the choice of one of the tools for a particular application depends strongly on the policy questions being asked. The SIAT provides the big picture via its ability to represent broad changes in policy instruments with EU-wide cross-sector impacts. The most comprehensive analysis of agricultural policy instruments can be obtained with SEAMLESS-IF. The MEA-Scope tool complements the other two approaches with detailed regional profiles
    Model-based systems to support impact assessment-Methods, tools and applications
    Sieber, S. ; Zander, P. ; Verburg, P.H. ; Ittersum, M.K. van - \ 2010
    Ecological Modelling 221 (2010). - ISSN 0304-3800 - p. 2133 - 2135.
    integrated assessment - framework
    A generic Farming System Simulator
    Louhichi, K. ; Janssen, S.J.C. ; Kanellopoulos, A. ; Li, H. ; Borkowski, N. ; Flichman, G. ; Hengsdijk, H. ; Zander, P. ; Blanco, M. ; Stokstad, G. ; Athanasiadis, I.N. ; Rizzoli, A.E. ; Huber, D. ; Heckelei, T. ; Ittersum, M.K. van - \ 2010
    In: Environmental and Agricultural Modelling: Integrated Approaches for Policy Impact Assessment / Brouwer, F.M., van Ittersum, M.K., Dordrecht : Springer - ISBN 9789048136186 - p. 109 - 132.
    Procedure to identify and assess current activities
    Zander, P. ; Borkowski, N. ; Hecker, J.M. ; Uthes, S. ; Stokstad, G. ; Rorstad, P.K. ; Bellocchi, G. - \ 2009
    [Wageningen] : SEAMLESS (SEAMLESS report / System for Environmental and Agricultural Modelling no. 50) - ISBN 9789085855934 - 124
    Integration of all FSSIM components within SEAMLESS-IF and a stand alone Graphical User Interface for FSSIM
    Janssen, S.J.C. ; Ittersum, M.K. van; Louhichi, K. ; Kanellopoulos, A. ; Meuter, E.C. ; Zander, P. ; Thorne, P. ; Flichman, G. ; Blanco Fonseca, M. ; Borkowski, N. ; Hecker, M. ; Stokstad, G. ; Romstad, E. ; Berentsen, P.B.M. ; Oude Lansink, A.G.J.M. ; Keulen, H. van; Thornton, P. ; Li, H. ; Rizzoli, A.E. ; Heckelei, T. - \ 2009
    [S.l.] : SEAMLESS (Report / SEAMLESS no. 38) - ISBN 9789085851264 - 59
    Farming Systems SIMulator: First generic bio-economic farm model
    Janssen, S.J.C. ; Louhichi, K. ; Kanellopoulos, A. ; Zander, P. ; Flichman, G. ; Hengsdijk, H. ; Hongtao, Li ; Heckelei, T. ; Stokstad, G. ; Borkowski, N. ; Hecker, J.M. ; Oude Lansink, A.G.J.M. ; Blanco, M. ; Meuter, E.C. ; Ittersum, M.K. van - \ 2009
    Farm models and economic valuation in the context of multifunctionality: a review of approaches from France, Germany, The Netherlands and Portugal
    Zander, P. ; Groot, J.C.J. ; Josien, E. ; Karpinski, I. ; Knierim, A. ; Meyer, B.C. ; Madureira, L. ; Rambonilaza, M. ; Rossing, W.A.H. - \ 2008
    International Journal of Agricultural Resources, Governance and Ecology 7 (2008)4/5. - ISSN 1462-4605 - p. 339 - 360.
    Multifunctionality of Agriculture (MFA) is a concept that supports the recognition of complex interdependencies between different resources, production processes and outputs of agricultural land use. Political decision making within a sustainable development frame requires extensive information about these interrelationships in order to analyse the impact of implemented policies and to assess future policy effects. This paper presents selected results of the EU FP6 supported MultAgri project, such as a comparative overview of models, techniques and tools that have been applied to the assessment of various agricultural outputs. In detail, multidimensional modelling tools and economic valuation instruments have been inspected and valuated. Examples from France, Germany, The Netherlands and Portugal ¿ the countries reviewed within the MultAgri workpackage 3 ¿ are used to highlight specific instrumental strengths and weaknesses. Conclusions are drawn with respect to further methodological research needs on multifunctionality of agriculture.
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