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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    Launching the Delta Alliance: business development report phase 3
    Driel, W.F. van; Peters, R. ; Guchte, C. van de - \ 2014
    Wageningen : Delta Alliance - 23
    klimaatverandering - overstromingen - kustgebieden - delta's - azië - afrika - amerika - europa - climatic change - floods - coastal areas - deltas - asia - africa - america - europe
    Delta Alliance is an international knowledge-driven network organisation. Its mission is to improve the resilience of deltas through more integrated and effective efforts, building on scientific research and knowledge exchange. It aims at disclosure of knowledge for application by a wide audience of end-users from the knowledge institutions, public partners and private sector, as well as to identification of upcoming research agendas
    Comparative assessment of the vulnerability and resilience of deltas : extended version with 14 deltas : synthesis report
    Bucx, T. ; Driel, W.F. van; Boer, H. de; Graas, S. ; Langenberg, V. ; Marchand, M. ; Guchte, C. van de - \ 2014
    Delft-Wageningen : Delta Alliance - ISBN 9789492100030 - 60
    hoogwaterbeheersing - kustgebieden - delta's - landgebruik - klimaatverandering - afrika - azië - europa - amerika - flood control - coastal areas - deltas - land use - climatic change - africa - asia - europe - america
    Worldwide, deltas host dense populations and are important centres of agricultural and industrial production, and economic activity. Many deltas are areas of great ecological importance as well, featuring wetlands of high and unique biodiversity. Deltas are vulnerable to changes by natural forces and human activities. Major drivers of change are population growth, economic development, climate change and subsidence.
    Launching the Delta Alliance: Content report phase 3
    Bosch, R. van den; Bucx, T. ; Klostermann, J.E.M. ; Wijsman, P. ; Driel, W.F. van; Guchte, C. van de - \ 2014
    Wageningen : Delta Alliance - 23
    klimaatverandering - overstromingen - kustgebieden - delta's - azië - afrika - amerika - europa - climatic change - floods - coastal areas - deltas - asia - africa - america - europe
    Delta Alliance is an international knowledge-driven network organisation. Its mission is to improve the resilience of deltas through more integrated and effective efforts, building on scientific research and knowledge exchange. It aims at disclosure of knowledge for application by a wide audience of end-users from the knowledge institutions, public partners and private sector, as well as to identification of upcoming research agendas
    Low-cost housing developments in South Africa miss the opportunities for household level urban greening
    Chackleton, C. ; Hebinck, P.G.M. ; Kaoma, M. ; Chishaleshale, M. ; Shackleton, S. ; Gambiza, J. ; Gumbo, D. - \ 2014
    Land Use Policy 36 (2014). - ISSN 0264-8377 - p. 500 - 509.
    small towns - open space - city - tree - inequality - services - policies - america - ecology - access
    Most developing countries of the world are experiencing large-scale migration from rural to urban areas. Many new migrants end up in low-cost or informal areas and slums with attendant environmental concerns. One dimension of improved urban sustainability is the provision of green spaces and trees. Whilst many countries have urban greening programmes for public spaces and streets, few have considered the status and potential contribution of trees from resident's own gardens. This paper reports firstly on the policy environment for urban forestry and greening in South Africa and secondly on the maintenance, use and appreciation of trees on private homesteads of residents of new and older low-income suburbs as well as informal housing areas from three small towns in South Africa. In particular we examine if the most recent centrally planned and built low-income housing schemes (called RDP suburbs in South Africa) have considered and incorporated plans or spaces for urban greenery in peoples’ homesteads. We found that broad environmental and sustainability concerns and statements are common in urban development and housing policies, but specific guidelines for implementation are generally absent. More specifically, urban forestry and tree planting are rarely mentioned in the broader land use and environmental policies other than the national forest act and subsequent regulations, but even there it is relatively superficial. In the study towns the prevalence, density and number of species of trees was lowest in the new RDP suburbs relative to the township and informal areas. Consequently, the contribution of tree products to local livelihoods was also lower in the RDP areas. Yet there were no differences in the level of appreciation of the value and intangible benefits of trees between residents from the three different suburbs. This shows that the failure to plan for and accommodate trees in new low-cost housing developments is missing an opportunity to improve overall urban sustainability and liveability and constraining the potential flows of tangible and intangible benefits to urban residents. Making opportunities for such in older suburbs is challenging because of space limitations and cost implications of retrospective provisions, but incorporation into plans for new low-cost housing development should be possible.
    Delta's zoeken steun bij elkaar
    Driel, W.F. van - \ 2012
    Kennis Online 9 (2012)jan. - p. 9 - 9.
    delta's - waterbeheer - internationale samenwerking - klimaatverandering - amerika - afrika - azië - nederland - deltas - water management - international cooperation - climatic change - america - africa - asia - netherlands
    Wereldwijd staan delta’s onder druk door bevolkingsgroei, industrialisatie en klimaatverandering. In de Delta Alliance zijn nu tien delta’s uit Noord- en Zuid-Amerika, Afrika, Azië en Nederland verenigd, en een tiental andere Afrikaanse en Aziatische delta’s zoeken nog aansluiting. ‘Men wil weten hoe andere delta’s met problemen omgaan’, verklaart programmamanager Wim van Driel de belangstelling. In juni 2011 is de stichting Delta Alliance International opgericht om het geheel meer slagkracht te geven en de Delta Alliance als onafhankelijk netwerk te kunnen profileren.
    Linear trends in seasonal vegetation time series and the modifiable temporal unit problem
    Jong, R. de; Bruin, S. de - \ 2012
    Biogeosciences 9 (2012). - ISSN 1726-4170 - p. 71 - 77.
    proxy global assessment - land degradation - sahel - environment - america - modis - ndvi
    Time series of vegetation indices (VI) derived from satellite imagery provide a consistent monitoring system for terrestrial plant productivity. They enable detection and quantification of gradual changes within the time frame covered, which are of crucial importance in global change studies, for example. However, VI time series typically contain a strong seasonal signal which complicates change detection. Commonly, trends are quantified using linear regression methods, while the effect of serial autocorrelation is remediated by temporal aggregation over bins having a fixed width. Aggregating the data in this way produces temporal units which are modifiable. Analogous to the well-known Modifiable Area Unit Problem (MAUP), the way in which these temporal units are defined may influence the fitted model parameters and therefore the amount of change detected. This paper illustrates the effect of this Modifiable Temporal Unit Problem (MTUP) on a synthetic data set and a real VI data set. Large variation in detected changes was found for aggregation over bins that mismatched full lengths of vegetative cycles, which demonstrates that aperiodicity in the data may influence model results. Using 26 yr of VI data and aggregation over full-length periods, deviations in VI gains of less than 1% were found for annual periods (with respect to seasonally adjusted data), while deviations increased up to 24% for aggregation windows of 5 yr. This demonstrates that temporal aggregation needs to be carried out with care in order to avoid spurious model results.
    Shifting subjects of health-care: Placing 'medical tourism' in the context of Malaysian domestic health-care reform
    Ormond, M.E. - \ 2011
    Asia Pacific Viewpoint 52 (2011)3. - ISSN 1360-7456 - p. 247 - 259.
    reproductive tourism - global health - trade - geographies - evolution - services - surgery - america - borders - policy
    ‘Medical tourism’ has frequently been held to unsettle naturalised relationships between the state and its citizenry. Yet in casting ‘medical tourism’ as either an outside ‘innovation’ or ‘invasion’, scholars have often ignored the role that the neoliberal retrenchment of social welfare structures has played in shaping the domestic health-care systems of the ‘developing’ countries recognised as international medical travel destinations. While there is little doubt that ‘medical tourism’ impacts destinations' health-care systems, it remains essential to contextualise them. This paper offers a reading of the emergence of ‘medical tourism’ from within the context of ongoing health-care privatisation reform in one of today's most prominent destinations: Malaysia. It argues that ‘medical tourism’ to Malaysia has been mobilised politically both to advance domestic health-care reform and to cast off the country's ‘underdeveloped’ image not only among foreign patient-consumers but also among its own nationals, who are themselves increasingly envisioned by the Malaysian state as prospective health-care consumers
    A taxonomic survey of Guatteria section Mecocarpus including the genera Guatteriopsis and Guatteriella p.p. (Annonaceae).
    Maas, P.J.M. ; Westra, L.I.T. - \ 2011
    Blumea 56 (2011)2. - ISSN 0006-5196 - p. 113 - 145.
    french-guiana - america - guyana - trees - genus
    This paper deals with a group of species of the Neotropical genus Guatteria (Annonaceae) which are characterized by leaves with tiny warts (verruculae) on both surfaces and by elongate and short-stipitate monocarps (i.e., the length of the monocarp body surpassing the length of the stipe). These species were placed by Fries in Guatteria sect. Mecocarpus (Fries 1939) (the name derives from Ancient Greek µ¿¿¿¿ = Poppy and ¿a¿p¿¿ = fruit: fruit resembling that of Papaver species). All occur in South America, none having been found elsewhere so far. Although there is much doubt nowadays about the taxonomic significance of Fries's sections, we maintain sect. Mecocarpus at present for convenience's sake. Additionally, the former genus Guatteriopsis, united with Guatteria a short time ago (Erkens & Maas 2008b), is now also included in sect. Mecocarpus. The same applies to one of the two species attributed to Guatteriella (also merged with Guatteria by Erkens & Maas 2008b), namely Guatteriella tomentosa R.E.Fr. (not Guatteria tomentosa Rusby) which is put into synonymy with Guatteria trichocarpa Erkens & Maas. One new species is described, namely Guatteria griseifolia Maas & Westra. The two species complexes of G. guianensis and G. decurrens are now treated each as a single polymorphic species. The present study falls within the framework of a planned monograph of the whole genus Guatteria.
    Lily Perennializing in Ithaca, Louisiana and Holland
    Miller, W.B. ; Kuehny, J. ; Gude, H. - \ 2010
    Flower Bulb Research Program Newsletter (2010)may. - p. 1 - 9.
    bolletjes en knolletjes als plantgoed - siergewassen - snijbloemen - lelies - lilium longiflorum - amerika - new york - veldgewassen - meerjarige vorm - tuinplanten - sets - ornamental crops - cut flowers - lilies - lilium longiflorum - america - new york - field crops - perennial habit - bedding plants
    In May 2006, we published a newsletter (number 10) where we first reported on our experiences with multi-year flowering of a variety of “cut flower” hybrid lilies at Cornell’s outdoor trialing site, Bluegrass Lane, in Ithaca NY. In 2002-2003, we planted a range of LA, Asiatic and Oriental hybrid lilies to investigate perennialization. While not a formal trial, the 2006 newsletter showed that a range of hybrids, primarily bred for cut flower use, performed very well in outdoor garden situations in upstate New York
    Comparitive assessment of the vulnerability and resilience of 10 deltas, synthesis report
    Bucx, T. ; Marchand, M. ; Makaske, B. ; Guchte, C. van de - \ 2010
    Delft-Wageningen : Deltares (Delta Alliance report nr. 1) - ISBN 9789490070397 - 100
    delta's - waterbeheer - internationale samenwerking - klimaatverandering - amerika - afrika - azië - nederland - deltas - water management - international cooperation - climatic change - america - africa - asia - netherlands
    The proposed framework for delta assessment and especially the scorecards are intended to enhance awareness raising, discussion and prioritization on most relevant delta issues, in each delta but also in comparison with other deltas. This should lead to more efficient and effective (multi-sectoral) policy formulation, management design and implementation, in concrete Delta plans, pilot-projects and (research) programmes. The target groups are all stakeholders who are involved in delta management at different levels and with different interests (government, private companies, NGOs, public), and who wish to contribute to the resilience of their own delta and other deltas worldwide.
    New species of Annonaceae from the Neotropics and miscellaneaous notes
    Maas, P.J.M. ; Westra, L.I.T. - \ 2010
    Blumea 55 (2010)3. - ISSN 0006-5196 - p. 259 - 275.
    guatteria annonaceae - french-guiana - pseudoxandra annonaceae - genus - america - guyana - trees
    In this paper six new Neotropical species in four genera are described, viz. Annona oxapampae, Duguetia vaupesana, Guatteria castilloi, G. pachyphylla, G. sanctae-crucis and Pseudoxandra xylopiifolia. Furthermore additional data on four poorly known species of Guatteria (G. denudata, G. glauca, G. modesta and G. terminalis) are added.
    Two new species of Guatteria (Annonaceae) from the Atlantic Forest of Brazil.
    Lobao, A.Q. ; Maas, P.J.M. ; Mello-Silva, R. de - \ 2010
    Blumea 55 (2010)2. - ISSN 0006-5196 - p. 120 - 122.
    french-guiana - america - guyana - trees - genus
    Guatteria emarginata and G. stenocarpa, two new species from the Atlantic Forest in Espírito Santo and Bahia, Brazil, are presented here. Guatteria emarginata is characterized by narrowly obovate, verruculose leaves, densely covered with cinereous hairs on the lower side and an emarginate apex. Guatteria stenocarpa is remarkable among the Atlantic Forest species of the genus for its narrowly ellipsoid to cylindric monocarps of 22-25 mm long.
    Effecy of parathion-methyl on Amazonian fish and freshwater invertebrates: A comparison of sensivity with temperate data
    Rico Artero, A. ; Geber, R. ; Campos Souto, P. ; Garcia, M.V.B. ; Brink, P.J. van den - \ 2010
    Archives of Environmental Contamination and Toxicology 58 (2010)3. - ISSN 0090-4341 - p. 765 - 771.
    risk-assessment - aquatic ecosystems - ecological risk - distributions - pesticides - ecotoxicology - toxicity - thailand - america - brazil
    Parathion-methyl is an organophosphorous insecticide that is widely used in agricultural production sites in the Amazon. The use of this pesticide might pose a potential risk for the biodiversity and abundance of fish and invertebrate species inhabiting aquatic ecosystems adjacent to the agricultural fields. Due to a lack of toxicity data for Amazonian species, safe environmental concentrations used to predict the ecological risks of parathion-methyl in the Amazon are based on tests performed with temperate species, although it is unknown whether the sensitivity of temperate species is representative for those of Amazonian endemic species. To address this issue, the acute toxic effect (LC50–96 h) of parathion-methyl was assessed on seven fish and five freshwater invertebrate species endemic to the Amazon. These data were used to compare their pesticide sensitivity with toxicity data for temperate species collected from the literature. The interspecies sensitivity was compared using the Species Sensitivity Distribution (SSD) concept. The results of this study suggest that Amazonian species are no more, or less, sensitive to parathion-methyl than their temperate counterparts, with LC50 values ranging from 2900 to 7270 µg/L for fish and from 0.3 to 319 µg/L for freshwater arthropods. Consequently, this evaluation supports the initial use of toxicity data of temperate fish and freshwater invertebrate species for assessing the effects of parathion-methyl on Amazonian freshwater ecosystems.
    Zeetransport van snijbloemen: ”If we get this quality more, we will sell a lot” : werkpakket productkwaliteit : eindrapportage
    Harkema, H. ; Mensink, M.G.J. - \ 2005
    Wageningen : Agrotechnology & Food Innovations (Rapport / Agrotechnology & Food Innovations 459) - 37
    snijbloemen - transport - zeetransport - distributie - logistiek - houdbaarheid (kwaliteit) - export - amerika - prijsvorming - internationale handel - cut flowers - transport - sea transport - distribution - logistics - keeping quality - exports - america - price formation - international trade
    Het onderzoeksproject Zeetransport Snijbloemen had als doel een distributieconcept te ontwikkelen voor snijbloemen op basis van zeecontainertransport. Ter afbakening van het project lag de focus op de Verenigde Staten. Het vervoer naar de V.S. van snijbloemen tegen een lagere prijs (zeetransport in plaats van luchttransport) was en is een zeer actuele kwestie. De Amerikaanse dollar heeft een lage koers ten opzichte van de euro, de luchttransporttarieven zijn erg hoog en de concurrentie vanuit andere landen is hevig.
    Identifying sustainability issues using participatory SWOT analysis - A case study of egg production in the Netherlands
    Mollenhorst, H. ; Boer, I.J.M. de - \ 2004
    Outlook on Agriculture 33 (2004)4. - ISSN 0030-7270 - p. 267 - 276.
    ammonia emissions - housing systems - quality - america - cages
    The aim of this paper was to demonstrate how participatory strengths, weaknesses, opportunities and threats (SWOT) analysis can be used to identify relevant economic, ecological and societal (EES) issues for the assessment of sustainable development. This is illustrated by the case of egg production in the Netherlands. Participatory methods are used to facilitate the exchange of ideas, experiences and knowledge of all relevant stakeholders and to create a basis for implementation of the final results. It can be concluded that the combination of a brainstorming session and SWOT analysis with a heterogeneous group of stakeholders constitutes a useful tool to order and structure these listed aspects and to identify relevant issues for sustainable development. Final selection of EES issues from the SWOT analysis, however, required additional reviewing of the literature and consultation with experts from specific fields. Final EES issues selected in the case study of Dutch egg production include welfare and health, environment, quality, ergonomics, economics, consumer concerns, and knowledge and innovation
    Genetic comparison of breeding schemes based on semen importation and local breeding schemes: Framework and application to Costa Rica
    Vargas, B. ; Arendonk, J.A.M. van - \ 2004
    Journal of Dairy Science 87 (2004)5. - ISSN 0022-0302 - p. 1496 - 1505.
    dairy-cattle - holstein cattle - embryo transfer - milk-yield - improvement - selection - programs - countries - america - traits
    Local breeding schemes for Holstein cattle of Costa Rica were compared with the current practice based on continuous semen importation (SI) by deterministic simulation. Comparison was made on the basis of genetic response and correlation between breeding goals. A local breeding goal was defined on the basis of prevailing production circumstances and compared against a typical breeding goal for an exporting country. Differences in genetic response were
    Europese visies op de risico's van genetisch gemodificeerde gewassen (2)
    Zadoks, J.C. - \ 2003
    Gewasbescherming 34 (2003)3. - ISSN 0166-6495 - p. 80 - 83.
    genetische modificatie - plantenveredeling - gewasbescherming - biotechnologie - sociaal milieu - consumentengedrag - europa - amerika - genetic engineering - plant breeding - plant protection - biotechnology - social environment - consumer behaviour - europe - america
    De genetische modificatie van gewassen houdt de gemoederen in Europa en de Verenigde Staten intensief bezig. Echte en vermeende risico's, vooroordelen voor de gewasbescherming, en morele, biologische, commerciële en politieke overwegingen spelen daarbij een hoofrol. Amerikanen gaan anders om met dit complex van overwegingen dan Europeanen. De auteur analyseert dit verschil in zienswijze vanuit het Europese perspectief in twee afleveringen. Dit is de 2e aflevering
    Europese visies op de risico's van genetisch gemodificeerde gewassen (1)
    Zadoks, J.C. - \ 2003
    Gewasbescherming 34 (2003)2. - ISSN 0166-6495 - p. 44 - 47.
    genetische modificatie - plantenveredeling - gewasbescherming - biotechnologie - sociaal milieu - consumentengedrag - europa - amerika - genetic engineering - plant breeding - plant protection - biotechnology - social environment - consumer behaviour - europe - america
    De genetische modificatie van gewassen houdt de gemoederen in Europa en de Verenigde Staten intensief bezig. Echte en vermeende risico's, vooroordelen voor de gewasbescherming, en morele, biologische, commerciële en politieke overwegingen spelen daarbij een hoofrol. Amerikanen gaan anders om met dit complex van overwegingen dan Europeanen. De auteur analyseert dit verschil in zienswijze vanuit het Europese perspectief in twee afleveringen
    Gedwongen tot onderzoek naar andere huisvesting: Amerikanen kampen met ziekte- en milieuproblemen.
    Veldkamp, T. ; Ferket, P.R. - \ 1999
    De Pluimveehouderij 29 (1999)28/29. - ISSN 0166-8250 - p. 16 - 17.
    kalkoenen - dierziekten - milieubeheer - huisvesting, dieren - stallen - dierenwelzijn - agrarische bedrijfsvoering - amerika - turkeys - animal diseases - environmental management - animal housing - stalls - animal welfare - farm management - america
    Ziekte- en milieuproblemen bij kalkoenen waren aanleiding tot een aanpassing van het bedrijfsmanagement en de ontwikkeling van nieuwe huisvestingssytemen. In dit artikel de stand van zaken
    The sections of Begonia including descriptions, keys and species lists (Studies in Begoniaceae VI).
    Doorenbos, J. ; Sosef, M.S.M. ; Wilde, J.J.F.E. de - \ 1998
    Wageningen : Wageningen Agricultural University (Wageningen Agricultural University papers 98-2) - ISBN 9789057820076 - 266
    begonia - begoniaceae - soorten - taxonomie - identificatie - determinatietabellen - sierplanten - bloemen - amerika - afrika - azië - begonia - begoniaceae - species - taxonomy - identification - keys - ornamental plants - flowers - america - africa - asia
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