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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‘Nu oogsten van kennisbundeling bedekte biologische teelten’ : afronding internationaal project Biogreenhouse
Meijer, Rob - \ 2016
horticulture - greenhouse horticulture - knowledge transfer - organic farming - cropping systems - conferences - agricultural research - international cooperation - legislation - turkey

In april 2016 komen onderzoekers, studenten, adviseurs, toeleveranciers en tuinbouwondernemers bijeen voor het internationale symposium over bedekte biologische teelten in Izmir. Na vier jaar stopt dan officieel het netwerk Biogreenhouse. “Voor de tijd daarna is het van belang dat mensen elkaar hebben leren kennen en elkaar makkelijker kunnen vinden”, concludeert Rob Meijer

Scoping study Turkish Rainbow trout aquaculture
Schram, E. - \ 2016
IJmuiden : IMARES (Report / IMARES C005/16) - 19 p.
rainbow trout - recirculating aquaculture systems - fish culture - industry - stakeholders - companies - feasibility studies - turkey - regenboogforel - recirculatie aquacultuur systemen - visteelt - industrie - kapitaalvennootschappen - haalbaarheidsstudies - turkije
Smart irrigation based on soil indicators for moisture, EC and temperature
Balendonck, Jos - \ 2015
irrigation - salinity - temperature - relative humidity - outturn - trickle irrigation - turkey - recirculating systems
Reconstructing Early Pleistocene (1.3 Ma) terrestrial environmental change in western Anatolia: Did it drive fluvial terrace formation?
Veldkamp, A. ; Candy, I. ; Jongmans, A.G. ; Maddy, D. ; Demir, T. ; Schoorl, J.M. ; Schreve, D. ; Stemerdink, C. ; Schriek, T. van der - \ 2015
Palaeogeography Palaeoclimatology Palaeoecology 417 (2015). - ISSN 0031-0182 - p. 91 - 104.
paleoenvironmental significance - volcanic disruption - gediz river - turkey - climate - paleosols - genesis - record - variability - carbonates
A terrestrial environmental reconstruction of an Early Pleistocene landscape from western Anatolia is presented. The basis of this reconstruction is a sedimentary stack comprising fluvial and colluvial slope deposits. Contained within this stack is a sequence comprising two massive laminar calcretes alternating with three reddish palaeosols. This evolutionary sequence is situated on top of a fluvial terrace staircase capped by a 1.3 Ma (40Ar/39Ar plateau age) lava flow. The micro-morphological properties of the observed calcretes and reddish palaeosols combined with the stable oxygen and carbon isotopic composition of the carbonates suggest the alternation of three stable relatively warm–humid (vegetation rich) and two stable relatively arid–cool (bare surface) cycles. In addition, there is also ample evidence for landscape instability in between these phases causing local soil truncation and slope instability in an open grassland–shrub environment. These landscape instability phases match well with known fluvial incisional phases of the Gediz during this period. This suggests that climate-forced landscape environmental dynamics were of sufficient magnitude to drive fluvial terrace formation of the Early Pleistocene Gediz.
From basalts to badlands : modelling long-term landscape response to lava damming of an upland catchment in western Turkey
Gorp, W. van - \ 2014
Wageningen University. Promotor(en): Tom Veldkamp, co-promotor(en): Jeroen Schoorl; Arnaud Temme. - Wageningen : Wageningen University - ISBN 9789462570481 - 182
landschap - geologie - landinrichting - evolutie - modelleren - stroomgebieden - tektoniek - vulkanische lava - pleistoceen - turkije - landscape - geology - land development - evolution - modeling - watersheds - tectonics - volcanic lava - pleistocene - turkey

Combining field reconstruction and landscape evolution modelling can be useful to investigate the relative role of different drivers (tectonics, climate, local base level) on long term catchment evolution. In this thesis, field reconstruction and landscape evolution modelling are combined to unravel the long-term (300 ka) response to lava damming events of evolution of the Geren Catchment, a tributary of the upper Gediz river near Kula, Western Turkey. This catchment was considered suitable for such a study because its high preservationof remnant landscape surfaces and fluvial terraces which could be dated, while its base level evolution could be reconstructed by identifying and dating lava flows.

In Chapter 2, landscape evolution modelling of an idealized catchment revealed long-term (15 ka) catchment response to natural damming. Evolution of a high erodible and low erodible landscape was simulated using landscape evolution model (LEM) LAPSUS (LandscApe procesS modelling at mUlti dimensions and Scales). The natural dam was given four different erodibilities, to mimic both the potentially more erodible landslide dams and resistant lava dams. In a low erodible landscape damming led to persistent preservation of the sediment wedge formed behind the dam, while in a high erodible landscape, damming additionally led to knickpoint persistence, hampered incision of the main river and stream rerouting. The highest erodible dam was almost removed after 15 ka, while its sediment wedge was still partly present. Comparison of results with natural dam events from literature showed that modelled response characteristics are observed in actual situations and that simulations on Quaternary timescales are useful.

In Chapter 3, field reconstruction resulted in a young lava flow being age constrained to the late Holocene (3.0 – 2.6 ka), by luminescence dating of fluvial sands below and on top of the flow. This lava flow dammed the Gediz river at two locations. the upstream lake was silted, while the downstream lake was not. Dams were breached catastrophically and possibly in a cascading event. The Gediz created an epigenetic gorge and its current river bed is still not at its pre-lava flow level. Results are summarized in a conceptual diagram. Furthermore, field reconstruction and 40Ar/39Ar dating revealed multiple lava dam events which have infrequently raised and lowered the base level of the Geren Catchment in the middle to late Pleistocene (311 – 175 ka). Sediment-capped palaeosurfaces in the Geren suggest change from an active fluvial system to a more lacustrine environment in the middle Pleistocene, followed by fluvial reactivation and stepped incision in the late Pleistocene.

A second landscape evolution modelling study was conducted in Chapter 4, on a 300 ka timescale, with a larger catchment. Four scenarios have been applied on a reconstructed paleodem of the Geren Catchment. In the first scenario, the palaeodem was given constant rainfall for 300 ka. In the second scenario, three short (1 ka) damming events were added at its catchment outlet. In the third scenario, the palaeodem endured gradual base level lowering at its outlet, based on the known incision rate of its base level, the Gediz river. In the fourth scenario, base level lowering and damming events were combined. Results were interpreted by evaluating 1 ka-averaged net erosion, catchment sediment storage, longitudinal profile development and spatial differences in net erosion and sediment storage. Results showed that the net erosion signal of the catchment is complex in all cases. However, average net erosion and its variability increased due to constant base level lowering. Additionally, alternating phases of high and low variability occurred in net erosion, where high variability coincided with a strong decrease in total catchment sediment storage. Adding damming events to the gradual base level lowering scenario generated similar average net erosion as the base level lowering scenario, however its temporal pattern showed significantly different alternation of high and low variability periods. Furthermore, dampened upstream erosion was observed. Over time, this dampening migrates upstream indicating a long-term legacy of short term dam events.

Field reconstruction and landscape evolution modelling were combined in Chapter 5, to be able to reconstruct and understand actual Geren catchment response to identified base level evolution over a 300 ka period. In all simulations, rainfall and vegetation are varied over time based on arboral pollen. Because exact significance and duration of dam events were not known, three scenarios of landscape evolution in the Geren Catchment were investigated: i) uplift driven gradual base level lowering, ii) gradual base level lowering and short damming events and iii) gradual base level lowering and long damming events. Output was evaluated for erosion-aggradation evolution in trunk gullies at two different distances from the catchment outlet. Climate influences erosion – aggradation activity in the upstream reach, although internal feedbacks influence timing and magnitude. Scenario i shows the most correlation with the climate signal, although its correlation is weak. Lava damming events leave an aggradation signal in the downstream reach, while complex and lagged response to these dams obscure correlations with climate and leave a legacy of the past in current landscape evolution. Catchment response of the long dam scenario correspond best with field reconstruction and dating. The combination of climate and base level explains a significant part of the landscape evolution history of the Geren Catchment.

In Chapter 6, a reflection and synthesis of Chapters 2-5 is presented. Indications for response to tectonics, climate and damming events are discussed separately for both field and modelling results. It is concluded that (lava) damming events of Pleistocene age can hamper, but also enhance incision on a 300 ka timescale. Furthermore, they can still have effect on current and future catchment evolution. However, catchment response to this evolution is complex and catchment specific and model results do not exactly reproduce its catchment history. An aggregated landscape evolution model output such as stream bed elevation change can be useful for comparison with fluvial terrace sequences. Combining field reconstruction and modelling suggests that the 300 ka incision history of the Geren is best explained if the catchment endured prolonged dam events. The combination of field reconstruction, dating and landscape evolution modelling therefore can enhance our understanding of long-term evolution of a specific landscape and increases knowledge on long term impact of past events on current catchment complexities and it is suggested to embed this research approach more structurally in long-term landscape reconstructions.

Livestock, the World, and the Dutch : part II: background country studies : final draft for discussion
Hooft, K. van 't - \ 2013
Lelystad : Wageningen UR Livestock Research (Report / Wageningen UR Livestock Research 696) - 63 p.
veehouderij - dierlijke productie - dierlijke producten - melkveehouderij - pluimveehouderij - varkenshouderij - rusland - china - republiek korea - vietnam - indonesië - turkije - ethiopië - kenya - mexico - nederland - livestock farming - animal production - animal products - dairy farming - poultry farming - pig farming - russia - korea republic - indonesia - turkey - ethiopia - netherlands
This report presents the background country studies for the report Livestock, the World, and the Dutch. A quick scan of opportunities in livestock production in nine countries.
Livestock, the World, and the Dutch : a quick scan of opportunities in livestock production in nine countries : final draft for discussion
Lee, J. van der; Hooft, K. van 't; Cornelissen, J.M.R. ; Wouters, A.P. - \ 2013
Lelystad : Wageningen UR Livestock Research (Report / Wageningen UR Livestock Research 695) - 63
veehouderij - dierhouderij - dierlijke productie - dierlijke producten - melkveehouderij - pluimveehouderij - varkenshouderij - rusland - china - republiek korea - vietnam - indonesië - turkije - ethiopië - kenya - mexico - nederland - livestock farming - animal husbandry - animal production - animal products - dairy farming - poultry farming - pig farming - russia - korea republic - indonesia - turkey - ethiopia - netherlands
This report explores opportunities and associated challenges for companies and organizations engaged in livestock production and marketing by looking at nine countries, representing BRIC countries, the so-called Next 11, and developing countries.
Social Relations in Ottoman Diyarbekir, 1870-1915
Jongerden, J.P. ; Verheij, J. - \ 2012
Leiden & Boston : Brill (Ottoman empire and its heritage vol. 51) - ISBN 9789004225183 - 368
osmaanse rijk - turkije - west-azië - geschiedenis - sociale structuur - etnische groepen - levensomstandigheden - ottoman empire - turkey - west asia - history - social structure - ethnic groups - living conditions
Turkse boer gaat grote trap beschermen
Koopmanschap, E.M.J. - \ 2012
Kennis Online 9 (2012)feb. - p. 11 - 11.
overheidsbeleid - internationale samenwerking - kaderrichtlijn water - vogelrichtlijn - eu regelingen - turkije - projectimplementatie - government policy - international cooperation - water framework directive - birds directive - eu regulations - turkey - project implementation
Als kandidaat-lid van de Europese Unie moet Turkije al gaan voldoen aan Europese richtlijnen als de Kaderrichtlijn Water (KRW) en de Vogel- en Habitarichtlijn (VHR). Het ministerie van EL&I ondersteunt Turkije bij implementatie van Europees beleid.
Inhibition of Listeria monocytogenes by pomegranate (Punica granatum) peel extract in meat paté at different temperatures
Hayrapetyan, H. ; Hazeleger, W.C. ; Beumer, R.R. - \ 2012
Food Control 23 (2012)1. - ISSN 0956-7135 - p. 66 - 72.
vitro antibacterial activity - phenolic-compounds - antioxidant activity - ellagic acid - staphylococcus-aureus - escherichia-coli - herb extracts - juice - growth - turkey
Natural antimicrobials are being more and more considered as alternative approach for controlling growth of microorganisms in food. The objective of this study was to evaluate the pomegranate extract’s (PE) potential to be used as a natural preservative in ready to eat meats. Listeria monocytogenes was the main target. In a preliminary assessment with the disk diffusion method PE showed inhibitory effect against all five tested species, in the following order of increasing sensitivity: L. monocytogenes, Bacillus subtilis, Bacillus cereus, Escherichia coli and Staphylococcus aureus. No viable cells of L. monocytogenes were detected after incubation in BHI broth in presence of 7.5% v/v of the liquid PE (or 24.7 mg dry PE/ml). This concentration was considered as the Minimal Bactericidal Concentration (MBC) of the tested PE. Two pure components commonly found in PE, namely gallic and ellagic acids were also tested in BHI broth, however they did not show considerable inhibition of L. monocytogenes. PE in a concentration equal to the measured MBC was tested against L. monocytogenes in meat paté at different temperatures. At 4 °C during 46 days the extract inhibited the growth in meat paté by 4.1 log CFU/g compared to the control, which had reached log 9.2 CFU/g already on the 18th day. Inhibition was less pronounced at higher temperatures. The results indicate that the PE has a potential to be used as a natural preservative in meat products. --------------------------------------------------------------------------------
Comparison of PCDD/F and dl-PCB levels in Turkish foodstuffs: industrial versus rural, local versus supermarket products, and assessment of dietary intake
Kilic, D. ; Cakirogullari, G.C. ; Ucar, Y. ; Theelen, R. ; Traag, W.A. - \ 2011
Food Additives & Contaminants. Pt. A, Chemistry, Analysis, Control, Exposure & Risk Assessment 28 (2011)7. - ISSN 1944-0049 - p. 913 - 924.
dioxin-like pcbs - toxic equivalency factors - porpoise phocoena-phocoena - polychlorinated-biphenyls - black-sea - human exposure - pcdfs - distributions - turkey
Polychlorinated dibenzo-p-dioxin and dibenzofurans (PCDD/Fs) and dioxin-like and non-dioxin-like (indicator) polychlorinated biphenyls (PCBs) were monitored in various foodstuffs of animal origin and edible oil samples obtained from two different cities in Turkey both rural and industrial. Total dioxin+dioxin-like PCBs and indicator PCB concentrations of pooled samples ranged 0.20-4.19 pg World Health Organization-Toxic Equivalency (WHO-TEQ)((1998))/g fat and 57.2-1710 pg/g fat, respectively. The dominant congeners were 2,3,4,7,8-PeCDF, 1,2,3,7,8-PeCDD, 2,3,7,8-TCDD and PCB126. Dietary intake of dioxin+dioxin-like PCBs and indicator PCBs from fish, dairy products, edible oil, egg and meat was 0.509 pg WHO-TEQ(1998)/kg bw (body weight)/day and 839 pg/kg bw/day in Afyon and 0.588 pg WHO-TEQ(1998)/kg bw/day and 1070 pg/kg bw/day in Kocaeli, respectively. The major contributors to total exposure were dairy products and fish. Despite the unexplained high contamination level in an individual egg sample from Kocaeli, average concentration levels in Turkey, even in industrialized regions, were low compared to reported concentrations in Western Europe. Exposure levels were well below the tolerable daily intake (TDI) of 2 pg WHO-TEQ(1998)/kg body weight.
The spatial (re)production of the Kurdish issue: multiple and contradicting trajectories - introduction
Gambetti, Z. ; Jongerden, J.P. - \ 2011
Journal of Balkan and Near Eastern Studies 13 (2011)4. - ISSN 1944-8953 - p. 375 - 388.
turkey - migrants - cities
Profiteren van de Turkse zon (interview met Ruud Maaswinkel)
Versluis, K. ; Maaswinkel, R.H.M. - \ 2011
WageningenWorld 2011 (2011)2. - ISSN 2210-7908 - p. 26 - 27.
glastuinbouw - turkije - kastechniek - economische ontwikkeling - greenhouse horticulture - turkey - greenhouse technology - economic development
In Turkije verrijst een demonstratiekas om Nederlandse tuinbouw-expertise aan de man te brengen. Ton Schrover van kassenbouwer Dalsem en onderzoeker Ruud Maaswinkel gingen er op werkbezoek. ‘Als we jonger waren, verhuisden we naar Turkije.’
Development of national lists for Turkey for habitats and species of the Habitats Directive : workshop report
Sluis, T. van der; Henkens, R.J.H.G. ; Bunce, R.G.H. ; Thissen, J. - \ 2010
Wageningen : Alterra - 53
habitats - habitatrichtlijn - soorten - turkije - habitats directive - species - turkey
Nationalisms and politics in Turkey: Political Islam, Kemalism and the Kurdish Issue
Casier, M. ; Jongerden, J.P. - \ 2010
London and New York : Routledge (Routledge studies in Middle Eastern politics 26) - ISBN 9780415583459 - 256
nationalisme - etnische groepen - politiek - regering - turkije - islam - sociale situatie - nationalism - ethnic groups - politics - government - turkey - social situation
This book examines some of the most pressing issues facing the Turkish political establishment, in particular the issues of political Islam, and Kurdish and Turkish nationalisms. The authors explore the rationales of the main political actors in Turkey in order to increase our understanding of the ongoing debates over the secularist character of the Turkish Republic and over Turkey’s longstanding Kurdish issue. The book contains contributions on the social and political fabric of Turkey, exploring Turkey’s secularist establishment, the ruling AKP government, the Kurdistan Workers' Party and the Institutions of the European Union. While the focus of concern in this book is with the social agents of contemporary politics in Turkey, the convictions they have and the strategies they employ, historical dimensions are also integrated in their analyses.
Dutch business opportunities in the Turkish biodiesel sector
Wiersinga, R.C. ; Elbersen, H.W. ; Yilmaz, G. - \ 2009
Den Haag : LEI (Report / LEI Wageningen UR 09-016) - 27
turkije - bio-energie - biobased economy - biobrandstoffen - turkey - bioenergy - biofuels
To research possibilities for Dutch businesses to be involved in the Turkish biodiesel sector, a short literature study and unstructured interviews with sector stakeholders were performed. Turkey is interested to develop its biofuel sector particularly to improve its security of energy supply, more than climatic based reasons. Turkey is currently importing most of its energy needs. About 50% of oil is used for transportation. Biodiesel has been produced chiefly from imported oilseeds. However, the quantities of locally produced rapeseed and to a lesser extent safflower has increased strongly in the last few years. Biodiesel production grew from 2005 onwards but always remained under its capacity. In mid 2008 production was completely halted. Input prices were high and supporting policies were lacking. Mixing gasoline with biodiesel in Turkey is not mandatory. Economic reforms following the financial crisis in 2001 and a new direct foreign investment law has improved the investment climate for foreign investors. Current possibilities for the Dutch private sector to be involved in the Turkish biodiesel sector are however very limited. Local demand for biodiesel is low and a clear policy focus on biodiesel is still lacking.
Identification of environmental factors affecting the speed of purebred Arabian racehorses in The Netherlands
Schurink, A. ; Theunissen, H. ; Ducro, B.J. ; Bijma, P. ; Grevenhof, E.M. van - \ 2009
Livestock Science 125 (2009)1. - ISSN 1871-1413 - p. 97 - 100.
racing performance - thoroughbred horses - genetic-parameters - traits - time - distances - brazil - turkey - age
The aim of our study was to identify environmental factors affecting the speed of purebred Arabian racehorses in The Netherlands. Data contained 380 records on 88 purebred Arabian racehorses of varying age and sex. Data were collected from March 2005 through June 2006 during 52 races of varying distance at the Dutch racetrack Duindigt. Because only racing time of the winner was recorded, speed of other horses was derived from the distances these horses covered on the racetrack in the racing time of the winner. Speed increased with the age of the horses and tended to decline in 7-, 8-, and 9-year-old horses. Speed decreased when the distance of a race increased. Compared to speed without competition between horses, speed of horses was higher when one or two competing horses were within one horse length distance for each horse at the moment the winner finishes. For a clear and unbiased estimate of the horse's performance, e.g. breeding value, it seems necessary to correct for competition effects
SeraCulture Innovation greenhouse : sustainable innovation greenhouse
Hemming, Silke - \ 2009
sustainability - innovations - greenhouse horticulture - greenhouse technology - farm management - turkey
Green knowledge exchange Turkey-The Netherlands : priority issues identified for cooperation in the field of biodiversity protection and conservation : interviews with experts from Governmental and Non-Governmental Organisations based in Turkey and based in The Netherlands
Klok, C. ; Koopmanschap, E.M.J. - \ 2009
Wageningen : Wageningen University & Research centre - ISBN 9789085854159 - 114
biodiversiteit - internationale samenwerking - nederland - turkije - natuurbeleid - biodiversity - international cooperation - netherlands - turkey - nature conservation policy
As a consequence of its geographical location Turkey is very rich in biodiversity; its flora is richest, both in terms of overall plant diversity and level of endemism compared to Europe, North Africa, or countries in the Middle East. This report gives an overview of important biodiversity issues in Turkey and priorities for cooperation selected by Turkish and Dutch parties. The project aimed to facilitate the set up of a long-term cooperation between Turkey and The Netherlands in a structural ‘Green Knowledge Exchange’ between officials and experts of the two countries. Reports of interviews with (non)governmental organizations (Netherlands and Turkey) form the backbone of this publication. It also provides a SWOT analysis and comparison of the information obtained from Turkish side and the information provided by organisations based in The Netherlands.
Geothermal energy sources as opportunity for Turkish greenhouse horticulture and the Dutch commercial sector
Zwart, H.F. de; Ruijs, M.N.A. - \ 2009
Wageningen : Wageningen UR Greenhouse Horticulture (Report / Wageningen UR Greenhouse Horticulture 225) - 52
kassen - geothermische energie - energiebronnen - energie - tuinbouw - nederland - turkije - kastechniek - greenhouses - geothermal energy - energy sources - energy - horticulture - netherlands - turkey - greenhouse technology
The objective of this report is to identify the opportunities offered by exploration of geothermal energy sources, and to specify actions to be taken by Dutch governmental bodies and private companies in collaboration with Turkish partners.
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