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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Verrassend weinig verspild
Timmermans, A.J.M. - \ 2019
‘Eetbare schil’ maakt fruit langer houdbaar
Timmermans, A.J.M. - \ 2019
Met Too Good To Go red je dagvers voedsel van kliko
Timmermans, A.J.M. - \ 2019
Wageningen University Research: Food experts issue global agenda to halve food loss and waste by 2030
Timmermans, Toine - \ 2019
Reducing food loss and waste : Setting a Global Action Agenda
Flanagan, Katie ; Robertson, Kai ; Hanson, Craig ; Timmermans, A.J.M. - \ 2019
World Resources Institute (WRI) - ISBN 9781569739648 - 136 p.
food wastage - food wastes - food chains
Planty Organic: voortgang 2018
Burgt, G.J. van der; Rietema, C. ; Bus, M. ; Timmermans, B.G.H. - \ 2019
Driebergen : Louis Bolk Instituut - 45 p.
Planty Organic is a project and an experimental field in which an arable farming system is developed based on 100% nitrogen input by fixation and non-ploughing. It is started in 2012. An evaluation report has been published (Van der Burgt et al., 2017b) on the period 2012-2016. The system can be used to earn new knowledge that can be applied in the organic or conventional agriculture, on the themes of nitrogen-, phosphorus- or soil-dynamics.This report focuses on the 2018 practice and results, referring to the evaluation report. The 2018 experiences confirm the system performance as described in the evaluation. All goals are achieved: it is a productive system with a high nitrogen efficiency and a very low environmental and climate impact.The production in 2017 was roughly the level as it is expected in the evaluation. This is confirmed in a system simulation with the Ndicea model. It is not plausible that the 2017 production level will be continuously realized. Research questions remain on the internal nutrient dynamics (nitrogen and phosphorus), soil life, rooting systems and CO2 footprint.
Towards a traceable climate service: Assessment of quality and usability of essential climate variables
Zeng, Yijian ; Su, Zhongbo ; Barmpadimos, Iakovos ; Perrels, Adriaan ; Poli, Paul ; Boersma, K.F. ; Frey, Anna ; Ma, Xiaogang ; Bruin, Karianne de; Goosen, Hasse ; John, Viju O. ; Roebeling, Rob ; Schulz, Jörg ; Timmermans, Wim - \ 2019
Remote Sensing 11 (2019)10. - ISSN 2072-4292
Climate data record (CDRs) - Climate services - Essential climate variables (ECVs) - Quality assurance - Traceability - Usability assessment

Climate services are becoming the backbone to translate climate knowledge, data & information into climate-informed decision-making at all levels, from public administrations to business operators. It is essential to assess the technical and scientific quality of the provided climate data and information products, including their value to users, to establish the relation of trust between providers of climate data and information and various downstream users. The climate data and information products (i.e., from satellite, in-situ and reanalysis) shall be fully traceable, adequately documented and uncertainty quantified and can provide sufficient guidance for users to address their specific needs and feedbacks. This paper discusses details on how to apply the quality assurance framework to deliver timely assessments of the quality and usability of Essential Climate Variable (ECV) products. It identifies an overarching structure for the quality assessment of single product ECVs (i.e., consists of only one single variable), multi-product ECVs (i.e., more than one single parameter), thematic products (i.e., water, energy and carbon cycles), as well as the usability assessment. To support a traceable climate service, other than rigorously evaluating the technical and scientific quality of ECV products, which represent the upstream of climate services, how the uncertainty propagates into the resulting benefit (utility) for the users of the climate service needs to be detailed.

INNOVA Ezine4 – Experimenting to reducing the French West-Indies islands’ vulnerability to global change
Timmermans, W. ; Jong, F. de; Collard, Martine ; Ozier-Lafontaine, Harry ; Stattner, Erick ; Cellier, Louis - \ 2019
Wageningen : Uitgeverij Blauwdruk
Slim met sensoren: Nano-elektronica van One Planet voor beter toekomst
Mol, Arthur ; Luijendijk, Liesbeth ; Balendonck, Jos ; Timmermans, Toine - \ 2019
Moderate intensity Pulsed Electric Fields (PEF) as alternative mild preservation technology for fruit juice
Timmermans, R.A.H. ; Mastwijk, H.C. ; Berendsen, L.B.J.M. ; Nederhoff, A.L. ; Matser, A.M. ; Boekel, M.A.J.S. Van; Nierop Groot, M.N. - \ 2019
International Journal of Food Microbiology 298 (2019). - ISSN 0168-1605 - p. 63 - 73.
Electric field strength - Microbiology - Ohmic heating - Preservation - Pulse width - Thermal reference

Moderate intensity Pulsed Electric Fields (PEF) was studied for microbial inactivation as an alternative to high intensity PEF or to classical thermal pasteurization. The process is characterized by the application of electric pulses, allowing an increase of the product temperature by the ohmic heat generated by the pulses. A systematic evaluation of the effect of parameters electric field strength (E) and pulse width (τ) on the inactivation of Escherichia coli, Listeria monocytogenes, Lactobacillus plantarum, Salmonella Senftenberg and Saccharomyces cerevisiae in orange juice was carried out in a continuous flow system. A wide range of conditions was evaluated, and both E and τ were shown to be important in the efficacy to inactivate micro-organisms. Remarkably, PEF conditions at E = 2.7 kV/cm and τ = 15–1000 μs showed to be more effective in microbial inactivation than at E = 10 kV/cm and τ = 2 μs. Inactivation kinetics of the tested PEF conditions were compared to an equivalent thermal process to disentangle non-thermal effects (electroporation) from thermal effects responsible for the microbial inactivation. At standard high intensity PEF treatment a non-thermal inactivation at E = 20 kV/cm and τ = 2 μs pulses was observed and attributed to electroporation. Non-thermal effects could also be resolved with moderate intensity PEF at E = 2.7 kV/cm and pulse width between τ = 15–1000 μs. Microbial inactivation at these moderate intensity PEF conditions was studied in more detail at different pH and medium conductivity for E. coli and L. monocytogenes in watermelon juice and coconut water. Under moderate intensity PEF conditions the effectiveness of treatment was independent of pH for all evaluated matrices in the pH range of 3.8–6.0, whereas under high intensity PEF conditions the pH of the product is a critical factor for microbial inactivation. This suggests that the inactivation proceeds through a different mechanism at moderate intensity PEF, and speculations for this mechanism are presented. In conclusion, moderate intensity PEF conditions at E = 2.7 kV/cm and pulse width of 15–1000 μs has potential for industrial processing for the preservation of fruit juices and pH neutral liquid food products.

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.
100 jaar Wageningen
Heusinkveld, Bert ; Marcelis, Leo ; Kessler, Aad ; Wamelink, Wieger ; Mücher, Sander ; Vliet, Arnold van; Oost, John van der; Timmermans, Toine ; Wijffels, Rene - \ 2019
Blockchain: van estafette naar ecosysteem
Timmermans, Tim - \ 2018
Toine Timmermans – Spilling food is a waste; but wasting the waste is worse! I WURcast
Timmermans, Toine - \ 2018
organic wastes - biobased economy - waste management - waste treatment
Climate resilient cities : Nature based solutions for future-proof cities
Hattum, T. van; Timmermans, W. - \ 2018
Wageningen University & Research - 2 p.
INNOVA Ezine 3 – Kiel Bay, Heavy rains and erosion in the Baltic coastal area
Timmermans, W. ; Jong, F. de; Bruijn, Daphne de; Harsema, H. ; Stelljes, N. ; Sterr, H. ; Martinez, G. - \ 2018
Wageningen : Blauwdruk
Zó voeden we 10 miljard monden in 2050 (met behoud van de aarde)
Broek, Eva van den; Ittersum, Martin van; Timmermans, Toine - \ 2018
INNOVA Ezine 2 – Valencia Region, Droughts and Agricultural Interests in a Metropolitan Area in Spain
Timmermans, W. ; Jong, F. de; Martín, Adrià Rubio ; Bruijn, Daphne de; Harsema, H. - \ 2018
Wageningen : Blauwdruk
In the metropolitan area of Valencia the water use is intense and the region suffers from frequent droughts due to climate conditions. Valencia is surrounded by an agricultural landscape with deep cultural significance and with a multi-sectoral structure in which irrigated agriculture plays an important role in the consumption of water. The Albufera Natural Park, less than 10 km south of Valencia, is a freshwater lagoon and its surroundings rice plots. Given the predicted adverse effects of climate change, it is important for the City of Valencia to develop adaptation strategies for the future climate. The mandate for the INNOVA project is to develop a climate service that satisfies the water use needs to support the distribution of potable water to its users.

The second INNOVA e-zine shows the climate and adaptation challenges the Valencia region is facing. The first issue showed the Mirror Waal project in the Nijmegen area (NL).

From awareness of upcoming flooding risks, via complex planning and design efforts into the final result. Whereas Nijmegen is far in the Adaptation Cycle; the Valencia metropolitan area is between the steps of identifying adaptation options (Step 3) and assessing these options (Step 4).
INNOVA Ezine 1 – Nijmegen, the EU Green Capital 2018 and Room for the River Waal
Timmermans, W. ; Jong, F. de; Ginkel, M. van; Martinez, G. ; Bruijn, D. de; Harsema, H. - \ 2018
Wageningen : Blauwdruk
The Dutch city of Nijmegen is becoming well-known because of its planning approach that combines large scale climate adaptation measures with a strong emphasis on spatial quality. Nijmegen is situated along the Waal river, one of Europe’s largest transport and ecological corridors. More than 250M euro has been spent on a new bypass of the Waal, called the Mirror Waal, one of the major urban examples of the Dutch Room for the River project. This e-zine shows the Mirror Waal project. From awareness of upcoming flooding risks, via complex planning and design efforts into the final result, including innovative ecological engineering, new sport activities and spontaneous festivals. The e-zine is presented by the INNOVA project. It is the first e-zine out of ten. INNOVA is a research project aiming to facilitate the use of climate data and projections, scientifically known as climate services, in adaptation efforts by urban governments. The project focuses on three European cities, and a small island state. These are: Kiel Bay in Germany, Nijmegen in The Netherlands, Valencia in Spain, and finally, the French West-Indies Islands of Guadeloupe & Martinique.
Nederlandse steden en hun ondergrond : testboek
Grond, Vincent ; Maas, Gilbert ; Timmermans, Wim ; Broks, Kees - \ 2018
Amersfoort : Stowa (Stowa rapport 2018-64) - 67
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