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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    A nature inclusive vision for Bonaire in 2050
    Verweij, Peter ; Cormont, Anouk ; Nel, Jeanne ; Rooij, Bertram de; Jones-Walters, Lawrence ; Slijkerman, Diana ; Soma, Katrine ; Eurpen, Michiel van; Pourier, Sherwin ; Coolen, Quirijn ; Mone, Ghislaine ; Bervoets, Tadzio ; Clarenda, Julianka ; Slobbe, Frank van; Christiaan, Danilo ; Meyer, Kalli de; Vries, Yoeri de; Eleana, Reynolds ; Hoetjes, Paul ; Meijer-Sedney, Esther ; Velden, Henk van de; Bertuol, Paulo ; Eckrich, Caren ; Engel, Sabine ; Francisca, Roxanne-Liana ; Wolf, Wijnand de; Beukeboom, Elsmarie ; Cranston, Cristely ; Almenkerk, Jan Jaap van; Baren, Pieter van; Debrot, Dolfi ; Janssen, John ; Hennen, Wil ; Henkens, Rene ; Mücher, Sander ; vd Geest, Matthijs ; Selnes, Trond ; Dominguez Teles, Iago - \ 2020
    Wageningen : Wageningen Environmental Research (Wageningen Environmental Research report 3023) - 41
    The invasive Asian bush mosquito Aedes japonicus found in the Netherlands can experimentally transmit Zika virus and Usutu virus
    Abbo, Sandra R. ; Visser, Tessa M. ; Wang, Haidong ; Göertz, Giel P. ; Fros, Jelke J. ; Abma-henkens, Marleen H.C. ; Geertsema, Corinne ; Vogels, Chantal B.F. ; Koopmans, Marion P.G. ; Reusken, Chantal B.E.M. ; Hall-Mendelin, Sonja ; Hall, Roy A. ; Oers, Monique M. Van; Koenraadt, C.J.M. ; Pijlman, Gorben P. - \ 2020
    PLoS Neglected Tropical Diseases 14 (2020)4. - ISSN 1935-2727 - 22 p.
    Background - The Asian bush mosquito Aedes japonicus is invading Europe and was first discovered in Lelystad, the Netherlands in 2013, where it has established a permanent population. In this study, we investigated the vector competence of Ae. japonicus from the Netherlands for the emerging Zika virus (ZIKV) and zoonotic Usutu virus (USUV). ZIKV causes severe congenital microcephaly and Guillain-Barré syndrome in humans. USUV is closely related to West Nile virus, has recently spread throughout Europe and is causing mass mortality of birds. USUV infection in humans can result in clinical manifestations ranging from mild disease to severe neurological impairments.
    Methodology/Principal findings - In our study, field-collected Ae. japonicus females received an infectious blood meal with ZIKV or USUV by droplet feeding. After 14 days at 28°C, 3% of the ZIKV-blood fed mosquitoes and 13% of the USUV-blood fed mosquitoes showed virus-positive saliva, indicating that Ae. japonicus can transmit both viruses. To investigate the effect of the mosquito midgut barrier on virus transmission, female mosquitoes were intrathoracically injected with ZIKV or USUV. Of the injected mosquitoes, 96% (ZIKV) and 88% (USUV) showed virus-positive saliva after 14 days at 28°C. This indicates that ZIKV and USUV can efficiently replicate in Ae. japonicus but that a strong midgut barrier is normally restricting virus dissemination. Small RNA deep sequencing of orally infected mosquitoes confirmed active replication of ZIKV and USUV, as demonstrated by potent small interfering RNA responses against both viruses. Additionally, de novo small RNA assembly revealed the presence of a novel narnavirus in Ae. japonicus.
    Conclusions/Significance - Given that Ae. japonicus can experimentally transmit arthropod-borne viruses (arboviruses) like ZIKV and USUV and is currently expanding its territories, we should consider this mosquito as a potential vector for arboviral diseases in Europe
    Deliverable 2.1: Policy. A review of policies and practices throughout Europe on mineral resources and land use
    Henkens, R.J.H.G. ; Bouwma, I.M. ; Cormont, A. ; Sluis, T. van der; Arvidsson, Ronald ; Raaness, A. - \ 2019
    Horizon 2020 - 23 p.
    Access to mineral resources in Europe is important for the economic development of Europe. At the same time, it is widely recognised that it is essential that minerals are responsibly sourced for the sustainable development of Europe. The question is how to balance societal interests, such as expanding cities, infrastructure development, agriculture and nature conservation with the exploration and mining of mineral resources. Land-use planning is a key- mechanism to balance various societal interests to guide sustainable spatial development. Therefore, the integration of mineral resources policies into land-use planning at different levels is a key factor for achieving responsibly sourced minerals. This deliverable of MinLand assesses the current state of affairs on land-use planning in relation to mineral exploration and the safeguarding of mineral resources. The deliverable reviews the issue of governance (e.g. the division of responsibilities between different levels) with a special emphasis on the coherence between existing mineral policies, legislation and land use planning. To analyse this, a survey was conducted amongst 18 participating countries (16 EU Member States plus Ukraine and Norway) to assess the current state of affairs. The mineral land use process has been further visualized for nine EU countries in section 2. In addition to the questionnaire and its updates, additional information has been gathered by contact through emails with consortium experts.
    Mineral land use processes are further analysed and scrutinized in Deliverable D4.2. D4.2 provides the reader with an evaluation of the interplay between the different parts of the land use processes and permitting procedures.
    The current deliverable is one in a series related to mineral policies and land use. This is a first step in describing how mineral raw materials relate to land use together with deliverables D2.3, D3.2 and D3.3. These land use issues will be further elaborated within WP4 (particularly D4.2), WP5, WP6 and WP7. The next step in this process building upon the gathered information is the D4.2.
    Borging MNP, data en indicatoren bestaand natuurbeleid (Borging MNP) 2019 : Tussenrapportage WOT-04-011-037.12
    Henkens, R.J.H.G. ; Roelofsen, H.D. ; Knegt, B. de; Wamelink, G.W.W. ; Jochem, R. ; Meeuwsen, H.A.M. ; Greft-van Rossum, J.G.M. van der - \ 2019
    Convention on biological diversity : Sixth national report of the Kingdom of the Netherlands
    Sanders, M.E. ; Henkens, R.J.H.G. ; Slijkerman, D.M.E. - \ 2019
    Wageningen : Statutory Research Tasks Unit for Nature & the Environment (WOt technical report 156) - 136
    The Netherlands is one of the most densely populated countries in the world. Most of the country’s land area is highly productive agricultural land. There is little or no area of natural ecosystem that could be called pristine,although high biodiversity values are certainly found. TheKingdom of the Netherlands also comprises six Caribbeanislands with, among other things, tropical rainforests,mangrove forests and coral reefs. The main cause of the long-term decline biodiversity has been the intensification of agricultural production, including the reclamation of semi-natural areas, the drainage of wet areas, the use of artificial fertilizer, etc. But also unsustainable fishing,pollution, overgrazing, climate change and invasive alien species cause a decline in biodiversity. To reverse this decline, the Netherlands has prepared and implemented action plans and targets for biodiversity since 1990. This report presents the most important efforts to achieve the biodiversity targets.
    Co-designing a data platform to impact nature policy and management: experiences from the Dutch Caribbean
    Verweij, P. ; Cormont, A. ; Hoetjes, P. ; Meyer, K. de; Bussel, T. van; Roosenschoon, O. ; Henkens, R. ; Schmidt, A. ; Janssen, S. - \ 2019
    Environmental Science & Policy 100 (2019). - ISSN 1462-9011 - p. 13 - 20.
    biodiversity - clearinghouse - indicators - reporting obligations - stakeholders

    To secure the sustainable use of nature, governments track nature's health and develop regulations and policies. Although there is a seeming abundance in observation-recordings, decision- and policy-makers are constrained by the lack of data and indicators, mostly as a result of barriers preventing existing data from being found, accessed, made suitable for (automated) processing and reused, but also due to missing visualisations targeted at answering questions asked by policy makers. This paper explores the process and principles for developing a biodiversity web-platform that informs policy and management on the state and trends of nature, based on experiences with the Dutch Caribbean Biodiversity Database (DCBD). The DCBD supports the assessment of the state of nature and guarantees long-term data availability in an environment that experiences a high turnover in project funds and personnel. Three principles made DCBD's uptake and growth possible: The platform is funded, promoted and used by national and regional policy makers, it simplifies tasks of local management and rapporteurs, and it is continuously being adapted to changing needs and insights. Stronger dissemination of DCBD's narratives in social arenas (e.g. newspapers, social media) may make Caribbean nature and biodiversity more politically and societally relevant.

    Nexus interventions for small tropical islands: case study Bonaire
    Geest, Matthijs van der; Slijkerman, D.M.E. ; Mücher, C.A. ; Debrot, A.O. ; Burg, S.W.K. van den; Dominguez Teles, I. ; Henkens, R.J.H.G. ; Ghasemi, Nafiseh ; Kramer, H. ; Meijninger, W.M.L. ; Lotz, L.A.P. - \ 2019
    Wageningen Marine Research - 85 p.
    Maatschappelijke initiatieven voor natuur en biodiversiteit : een schets van de reikwijdte en ecologische effecten en potenties van maatschappelijke initiatieven voor natuur in feiten en cijfers
    Sanders, M.E. ; Langers, F. ; Henkens, R.J.H.G. ; Donders, J.L.M. ; Dam, R.I. van; Mattijssen, T.J.M. ; Buijs, A.E. - \ 2018
    Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-technical report 120) - 200
    Voor de Balans van de Leefomgeving willen we weten welke feiten en cijfers bekend zijn over maatschappelijke activiteiten, initiatieven en functiecombinaties voor natuur en biodiversiteit en wat de bijdrage hiervan is om de biodiversiteit te verbeteren. In dit onderzoek hebben we gegevens verzameld in de beschikbare literatuur en online bronnen. Uit de verzamelde feiten en cijfers blijkt dat het merendeel van de burgers betrokken zijn bij natuur en dat op onderdelen de betrokkenheid van burgers maar ook van bedrijven toeneemt. De meeste groene burgerinitiatieven zijn gericht op beleefbaar groen maar soms worden ook belangrijke natuurwaarden gerealiseerd die aansluiten bij internationale biodiversiteitsdoelstellingen. Burgers spelen daarnaast een zeer belangrijke rol bij het in kaart brengen van gegevens over planten- en diersoorten. Uit de verzamelde feiten en cijfers blijkt ook dat bij alle huidige vormen van bodemgebruik er mogelijkheden en initiatieven zijn voor natuurcombinaties of voor het vergroten van de biodiversiteit.---For the Assessment of the Dutch Human Environment we want to review what is known about social activities, initiatives and combination of functions for nature and biodiversity and what they contribute to enhancing biodiversity. In this study we collected data from the available literature and websites. These facts and figures show that most people are involved with nature in one way or another and that the involvement of individuals and businesses in some activities is even increasing. Most green citizens' initiatives are focused on amenity green space, but sometimes important natural values that support international biodiversity targets are also created. In addition, citizens play a vital role in monitoring plant and animal species. These facts and figures show also that in all current forms of land use there are possibilities and initiatives for nature combinations or for increasing biodiversity.
    Verbetering MNP (Borging en technische ontwikkeling). Tussenrapportage WOT-04-011-036.94
    Jochem, R. ; Henkens, R.J.H.G. - \ 2018
    WOT Natuur & Milieu (WOt-interne notitie 233)
    Verbetering MNP (Onzekerheid- en gevoeligheidsanalyse). Tussenrapportage WOT-04-011-036.94
    Jochem, R. ; Henkens, R.J.H.G. ; Broeke, G.A. Ten; Greft-van Rossum, J.G.M. van der - \ 2018
    WOT Natuur & Milieu (WOt-interne notitie 234)
    Verbetering MNP (Effecten van klimaatverandering). Tussenrapportage WOT-04-011-036.94
    Wamelink, G.W.W. ; Adrichem, M.H.C. van; Jochem, R. ; Henkens, R.J.H.G. - \ 2018
    WOT Natuur & Milieu (WOt-interne notitie 235)
    Conserved motifs in the hypervariable domain of chikungunya virus nsP3 required for transmission by Aedes aegypti mosquitoes
    Göertz, Giel P. ; Lingemann, Marit ; Geertsema, Corinne ; Abma-Henkens, Marleen H.C. ; Vogels, Chantal B.F. ; Koenraadt, Constantianus J.M. ; Oers, Monique M. van; Pijlman, Gorben P. - \ 2018
    PLoS Neglected Tropical Diseases 12 (2018)11. - ISSN 1935-2727

    BACKGROUND: Chikungunya virus (CHIKV) is a re-emerging arthropod-borne (arbo)virus that causes chikungunya fever in humans and is predominantly transmitted by Aedes aegypti mosquitoes. The CHIKV replication machinery consists of four non-structural proteins (nsP1-4) that additionally require the presence of a number of host proteins for replication of the viral RNA. NsP3 is essential for CHIKV replication and has a conserved macro, central and C-terminal hypervariable domain (HVD). The HVD is intrinsically disordered and interacts with various host proteins via conserved short peptide motifs: A proline-rich (P-rich) motif that has affinity for SH3-domain containing proteins and duplicate FGDF motifs with affinity for G3BP and its mosquito homologue Rasputin. The importance of these motifs for infection of mammalian cells has previously been implicated. However, their role during CHIKV infection of mosquito cells and transmission by mosquitoes remains unclear. METHODOLOGY / PRINCIPAL FINDINGS: Here, we show that in-frame deletion of the P-rich motif is lethal for CHIKV replication in both mosquito and mammalian cells. However, while mutagenesis of the P-rich motif negatively affects replication both in mammalian and mosquito cells, it did not compromise the infection and transmission of CHIKV by Ae. aegypti mosquitoes. Mutagenesis of both FGDF motifs together completely inactivated CHIKV replication in both mammalian and mosquito cells. Importantly, mutation of a single FGDF motif attenuated CHIKV replication in mammalian cells, while replication in mosquito cells was similar to wild type. Surprisingly, CHIKV mutants containing only a single FGDF motif were efficiently transmitted by Ae. aegypti. CONCLUSIONS / SIGNIFICANCE: The P-rich motif in CHIKV nsP3 is dispensable for transmission by mosquitoes. A single FGDF motif is sufficient for infection and dissemination in mosquitoes, but duplicate FGDF motifs are required for the efficient infection from the mosquito saliva to a vertebrate host. These results contribute to understanding the dynamics of the alphavirus transmission cycle and may help the development of arboviral intervention strategies.

    Preliminary checklist of extant endemic species and subspecies of the windward Dutch Caribbean (St. Martin, St. Eustatius, Saba and the Saba Bank)
    Bos, O.G. ; Bakker, P.A.J. ; Henkens, R.J.H.G. ; Freitas, J.A. de; Debrot, A.O. - \ 2018
    Den Helder : Wageningen Marine Research (Wageningen Marine Research rapport C067/18) - 69
    Water availability as driver of birch mortality in Hustai National Park, Mongolia
    Verhoeven, D. ; Boer, W.F. de; Henkens, R.J.H.G. ; Sass-Klaassen, U.G.W. - \ 2018
    Dendrochronologia 49 (2018). - ISSN 1125-7865 - p. 127 - 133.
    Trees in the forest-steppe ecotones face stress due to reduced water availability as a consequence of more extreme seasonal fluctuations in precipitation and temperature. Together with browsing pressure this can hinder tree growth, tree regeneration and competition between trees and grasses. We studied the impact of both stress factors on the mortality of birch trees in two forest sites at Hustai National Park, Mongolia, by applying tree-ring research to determine growth-limiting factors and assessing browsing pressure on young and adult birch. We expected warm and dry summer conditions as main growth limiting factor. Moreover, we expected a positive relation between deer density and tree mortality with browsing mainly affecting smaller trees with a low diameter at breast height (DBH). We found that the growth in both birch populations is mainly driven by winter precipitation and – to a lesser extent – negatively affected by high summer temperature. This suggests that water availability as defined by soil moisture, especially at the beginning of the growing season is crucial for birch growth in our study area. For mortality we found significant differences between both populations, but no significant relationship with deer density. In plots with high mortality rates mean tree height of the remaining living trees decreased. These results suggest that under expected climate change with declining annual precipitation rates, the birch forest of Hustai National Park is converting into a steppe ecosystem, like described for other forest ecosystems in this ecotone.
    Genotype assembly, biological activity and adaptation of spatially separated isolates of Spodoptera litura nucleopolyhedrovirus
    Ali, Ghulam ; Abma-Henkens, Marleen H.C. ; Werf, Wopke van der; Hemerik, Lia ; Vlak, Just M. - \ 2018
    Journal of Invertebrate Pathology 153 (2018). - ISSN 0022-2011 - p. 20 - 29.
    Adaptation - Biological activity - Cropping systems - Genetic characterization - Geographical regions - Spodoptera litura nucleopolyhedroviruses
    The cotton leafworm Spodoptera litura is a polyphagous insect. It has recently made a comeback as a primary insect pest of cotton in Pakistan due to reductions in pesticide use on the advent of genetically modified cotton, resistant to Helicoverpa armigera. Spodoptera litura nucleopolyhedrovirus (SpltNPV) infects S. litura and is recognized as a potential candidate to control this insect. Twenty-two NPV isolates were collected from S. litura from different agro-ecological zones (with collection sites up to 600 km apart) and cropping systems in Pakistan to see whether there is spatial dispersal and adaptation of the virus and/or adaptation to crops. Therefore, the genetic make-up and biological activity of these isolates was measured. Among the SpltNPV isolates tested for speed of kill in 3rd instar larvae of S. litura, TAX1, SFD1, SFD2 and GRW1 were significantly faster killing isolates than other Pakistani isolates. Restriction fragment length analysis of the DNA showed that the Pakistan SpltNPV isolates are all variants of a single SpltNPV biotype. The isolates could be grouped into three genogroups (A–C). The speed of kill of genogroup A viruses was higher than in group C according to a Cox’ proportional hazards analysis. Sequence analysis showed that the Pakistan SpltNPV isolates are more closely related to each other than to the SpltNPV type species G2 (Pang et al., 2001). This suggests a single introduction of SpltNPV into Pakistan. The SpltNPV-PAK isolates are distinct from Spodoptera littoralis nucleopolyhedrovirus. There was a strong correlation between geographic spread and the genetic variation of SpltNPV, and a marginally significant correlation between the latter and the cropping system. The faster killing isolates may be good candidates for biological control of S. litura in Pakistan.
    Staat van de natuur van Caribisch Nederland 2017 : een eerste beoordeling van de staat (van instandhouding), bedreigingen en managementimplicaties van habitats en soorten in Caribisch Nederland
    Debrot, A.O. ; Henkens, R.J.H.G. ; Verweij, P.J.F.M. - \ 2018
    IJmuiden : Wageningen Marine Research (Wageningen Marine Research rapport C086/17) - 214
    Feiten en cijfers natuur en samenleving : Tussenrapportage WOT-04-010-034.41
    Sanders, M.E. ; Langers, F. ; Henkens, R.J.H.G. ; Donders, J.L.M. ; Dam, R.I. van; Mattijssen, T.J.M. ; Broekmeyer, M.E.A. ; Adrichem, M.H.C. van; Wamelink, G.W.W. ; Verboom, J. - \ 2017
    Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-interne notitie 194)
    Bijdrage van Green Deals aan de beleidsdoelen voor natuur en biodiversiteit
    Henkens, R.J.H.G. ; Oorschot, M.M.P. ; Ganzevles, J. - \ 2017
    Wageningen : Wettelijke Onderzoekstaken Natuur & Milieu (WOt-technical report 94) - 66
    Het afsluiten van Green Deals (GDs), waarbij maatschappelijke partners worden uitgenodigd om metoplossingen voor groene groei te komen, is een optie waarmee de Nederlandse overheid innovatiestimuleert. In dit onderzoek is nagegaan wat de bijdrage is van de 41 GDs Biodiversiteit (eind 2016) aan debeleidsdoelen, zoals verwoord in de Rijksnatuurvisie 2014 en de Uitvoeringsagenda Natuurlijk Kapitaal. Deambities van de GDs blijken goed aan te sluiten op de verschillende beleidsdoelen. Ecologische effectenworden nauwelijks gemonitord. Desalniettemin lijkt het effect van veel GDs beloftevol, doordat vaak goedestappen worden gezet in het innovatieproces, met de juiste partijen, met concrete op natuur en biodiversiteitgerichte doelstellingen en met een grote potentie voor opschaling. Door een gerichtere sturing op deformulering van GD-doelen en de samenstelling van betrokken partijen, kan de effectiviteit van Green Dealsnog verder worden vergroot---The Natinonal Government carries system responsibility for nature. Some ambiguity in the understanding ofthe concept of system responsibility seems to exist, however. The ways in which system responsibility isimplemented vary in practice also. The Ministry of Infrastructure and the Environment gives expression to itssystem responsibility within spatial planning in a largely facilitating manner, but its role also shows someregulating elements. With regard to water policy there is, on the contrary, a largely regulating interpretationwith some facilitating elements. The Ministry of the Interior has a facilitating role concerning the issue ofdemographic decline. The Ministry of Economic Affairs is still searching for a way to handle its systemresponsibility in nature policy and is showing at the time of this research (beginning 2013) an inclinationtowards a largely facilitating role. The Assessment of the Dutch Human Environment may be helpful with thissearch by clarifying the concept, indicating further options for implementation and making clear what theconsequences will be of the different possible roles.
    Green deals : van ruimte maken naar richting geven
    Ganzevles, Jurgen ; Oorschot, Mark van; Potting, J.M.B. ; Henkens, R.J.H.G. - \ 2017
    Tijdschrift Milieu : Vereniging van milieuprofessionals (2017)juni. - p. 35 - 39.
    overheidsbeleid - milieubeleid - overeenkomsten - emissiereductie - samenwerking - evaluatie - duurzame ontwikkeling - government policy - environmental policy - agreements - emission reduction - cooperation - evaluation - sustainable development
    Green Deals zijn vrijwillige afspraken tussen de Rijksoverheid en maatschappelijke partijen om innovatie en verduurzaming te bevorderen. Met deze aanpak geeft de overheid ruimte aan vernieuwing vanuit de maatschappij. Maar wat leveren Green Deals nu eigenlijk op? Partijen blijken warm te lopen voor samenwerking en vernieuwing. Maar wat mist is het vooraf goed doordenken van de ver wachte milieuwinst en het moni- toren er van tijdens de uitvoering van deals. Door meer richting te geven, zowel aan het begin als aan het einde van individuele deals, kan de Rijksoverheid bevorderen dat de Green Deals verder bijdragen aan maatschappelijke doelen.
    Chobe district integrated land use plan
    Sluis, Theo van der; Cassidy, Lin ; Brooks, Chris ; Wolski, Piotr ; VanderPost, Cornelis ; Wit, Piet ; Henkens, Rene ; Eupen, Michiel van; Mosepele, K. ; Maruapula, O. ; Veenendaal, Elmar - \ 2017
    Wageningen : Wageningen Environmental Research (Wageningen Environmental Research rapport 2813) - 181
    land use - sustainability - tourism - ecosystems - savannas - botswana - landgebruik - duurzaamheid (sustainability) - toerisme - ecosystemen - savannen - botswana
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