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 Bis-Zn2+-Pyridyl-Salen-Type Complex Conjugated to the ATP Aptamer : An ATPase-Mimicking Nucleoapzyme
Biniuri, Yonatan ; Shpilt, Zohar ; Albada, Bauke ; Vázquez-González, Margarita ; Wolff, Mariusz ; Hazan, Carina ; Golub, Eyal ; Gelman, Dimitri ; Willner, Itamar - \ 2019
ChemBioChem (2019). - ISSN 1439-4227 - p. 1 - 7.
catalytic DNA - DNAzymes - microscale thermophoresis - molecular dynamics - nucleic acids

Catalytic nucleic acids consisting of a bis-Zn2+-pyridyl-salen-type ([di-ZnII 3,5 bis(pyridinylimino) benzoic acid]) complex conjugated to the ATP aptamer act as ATPase-mimicking catalysts (nucleoapzymes). Direct linking of the Zn2+ complex to the 3′- or 5′-end of the aptamer (nucleoapzymes I and II) or its conjugation to the 3′- or 5′-end of the aptamer through bis-thymidine spacers (nucleoapzymes III and IV) provided a set of nucleoapzymes exhibiting variable catalytic activities. Whereas the separated bis-Zn2+-pyridyl-salen-type catalyst and the ATP aptamer do not show any noticeable catalytic activity, the 3′-catalyst-modified nucleoapzyme (nucleoapzyme IV) and, specifically, the nucleoapzyme consisting of the catalyst linked to the 3′-position through the spacer (nucleoapzyme III) reveal enhanced catalytic features in relation to the analogous nucleoapzyme substituted at the 5′-position (kcat=4.37 and 6.88 min−1, respectively). Evaluation of the binding properties of ATP to the different nucleoapzyme and complementary molecular dynamics simulations suggest that the distance separating the active site from the substrate linked to the aptamer binding site controls the catalytic activities of the different nucleoapzymes.

Improving environmental risk assessments of chemicals: Steps towards evidence-based ecotoxicology
Martin, Olwenn V. ; Adams, Julie ; Beasley, Amy ; Belanger, Scott ; Breton, Roger L. ; Brock, Theo C.M. ; Buonsante, Vito A. ; Galay Burgos, Malyka ; Green, John ; Guiney, Patrick D. ; Hall, Tilghman ; Hanson, Mark ; Harris, Meagan J. ; Henry, Tala R. ; Huggett, Duane ; Junghans, Marion ; Laskowski, Ryszard ; Maack, Gerd ; Moermond, Caroline T.A. ; Panter, Grace ; Pease, Anita ; Poulsen, Veronique ; Roberts, Mike ; Rudén, Christina ; Schlekat, Christian E. ; Schoeters, Ilse ; Solomon, Keith R. ; Staveley, Jane ; Stubblefield, Bill ; Sumpter, John P. ; Warne, Michael S.J. ; Wentsel, Randall ; Wheeler, James R. ; Wolff, Brian A. ; Yamazaki, Kunihiko ; Zahner, Holly ; Ågerstrand, Marlene - \ 2019
Environment International 128 (2019). - ISSN 0160-4120 - p. 210 - 217.
Chemical safety - Decision-making - Ecological risk assessment - Ecotoxicology - Environmental risk assessment - Evidence-based
Herinneringen aan Wim Wolff
Dankers, Norbert ; Reijnders, Peter ; Smit, Cor ; Veen, Jan - \ 2019
Den Helder : Wageningen Marine Research (Wageningen Marine Research rapport 19.004) - 28
Functional response of the mirid predators Dicyphus bolivari and Dicyphus errans and their efficacy as biological control agents of Tuta absoluta on tomato
Ingegno, B.L. ; Messelink, G.J. ; Bodino, N. ; Iliadou, A. ; Driss, L. ; Woelke, J.B. ; Leman, A. ; Tavella, L. - \ 2019
Journal of Pest Science 92 (2019)4. - ISSN 1612-4758 - p. 1457 - 1466.
Hemiptera: Miridae - Lepidoptera: Gelechiidae - Numerical response - Predator voracity - South American tomato pinworm

Dicyphus bolivari Lindberg and Dicyphus errans (Wolff) (Hemiptera: Miridae) are naturally widespread in many crops with low-pesticide pressure, where they prey upon several arthropods, including the tomato pinworm Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). However, their efficacy as biological control agents (BCAs) of this pest needs further investigations. Therefore, in this study the predatory efficacy of D. bolivari and of D. errans on T. absoluta was evaluated on tomato in laboratory and greenhouse trials. Their functional response to different numbers of T. absoluta eggs (up to 350) offered to single females or 5th-instar nymphs for 24 h was assessed in laboratory. Females and nymphs of both predators showed a high voracity and a type II functional response, with an estimated maximum predation rate per day of 189 and 194 eggs for D. bolivari females and nymphs, respectively, and 197 and 179 eggs for D. errans females and nymphs, respectively. The predators showed similar predation rates of T. absoluta eggs on plants in cage trials. However, our greenhouse trial showed that the commonly used Macrolophus pygmaeus (Rambur) (Hemiptera: Miridae), which has a lower individual predation capacity than D. bolivari and D. errans, was more effective in controlling T. absoluta than D. errans and D. bolivari because of its stronger numerical response to densities of T. absoluta and supplemental food than the other two predator species. This shows that long-term greenhouse trials, which include functional and numerical responses to pest densities, are essential to evaluate the efficacy of an omnivorous predator.

Testing new concepts for crop cultivation in space : Effects of rooting volume and nitrogen availability
Wolff, Silje A. ; Palma, Carolina F. ; Marcelis, Leo ; Jost, Ann Iren Kittang ; Delden, Sander H. van - \ 2018
Life 8 (2018)4. - ISSN 2075-1729
Conductivity - Gas exchange - Greenhouse - Human space flight - Hydroponics - Lettuce - Life support - Transpiration

Long term human missions to the Moon and Mars, rely on life support systems for food production and regeneration of resources. In the EU H2020 TIME SCALE-project, an advanced life support system concept was developed to facilitate plant research and technology demonstration under different gravity conditions. Ground experiments assessed irrigation systems and effects of rooting- and nutrient solution volume. The maximal allowed volume for existing International Space Station research facilities (3.4 L) was able to support cultivation of two lettuce heads for at least 24 days. A smaller rooting volume (0.6 L) increased root biomass after 24 days, but induced a 5% reduction in total biomass at day 35. Regulating effects of nitrate supply on plant water fluxes in light and dark were also investigated. At low concentrations of nitrate in the nutrient solution, both transpiration and stomatal conductance increased rapidly with increasing nitrate concentration. During day-time this increase levelled off at high concentrations, while during nigh-time there was a distinct decline at supra optimal concentrations. Plants supplied with nitrate concentrations as low as 1.25 mM did not show visible signs of nutrient stress or growth reduction. These findings hold promise for both reducing the environmental impact of terrestrial horticulture and avoiding nutrient stress in small scale closed cultivation systems for space.

Interregional flows of ecosystem services : Concepts, typology and four cases
Schröter, Matthias ; Koellner, Thomas ; Alkemade, Rob ; Arnhold, Sebastian ; Bagstad, Kenneth J. ; Erb, Karl Heinz ; Frank, Karin ; Kastner, Thomas ; Kissinger, Meidad ; Liu, Jianguo ; López-Hoffman, Laura ; Maes, Joachim ; Marques, Alexandra ; Martín-López, Berta ; Meyer, Carsten ; Schulp, Catharina J.E. ; Thober, Jule ; Wolff, Sarah ; Bonn, Aletta - \ 2018
Ecosystem Services 31 (2018). - ISSN 2212-0416 - p. 231 - 241.
Drivers - Effects - Spatial flows - Sustainability - Teleconnection - Telecoupling
Conserving and managing global natural capital requires an understanding of the complexity of flows of ecosystem services across geographic boundaries. Failing to understand and to incorporate these flows into national and international ecosystem assessments leads to incomplete and potentially skewed conclusions, impairing society's ability to identify sustainable management and policy choices. In this paper, we synthesise existing knowledge and develop a conceptual framework for analysing interregional ecosystem service flows. We synthesise the types of such flows, the characteristics of sending and receiving socio-ecological systems, and the impacts of ecosystem service flows on interregional sustainability. Using four cases (trade of certified coffee, migration of northern pintails, flood protection in the Danube watershed, and information on giant pandas), we test the conceptual framework and show how an enhanced understanding of interregional telecouplings in socio-ecological systems can inform ecosystem service-based decision making and governance with respect to sustainability goals.
Monoterpene chemical speciation in a tropical rainforest : variation with season, height, and time of dayat the Amazon Tall Tower Observatory (ATTO)
Maria Yanez-Serrano, Ana ; Christine Nölscher, Anke ; Bourtsoukidis, Efstratios ; Gomes Alves, Eliane ; Ganzeveld, Laurens ; Bonn, Boris ; Wolff, Stefan ; Sa, Marta ; Yamasoe, Marcia ; Williams, Jonathan ; Andreae, Meinrat O. - \ 2018
Atmospheric Chemistry and Physics 18 (2018)5. - ISSN 1680-7316 - p. 3403 - 3418.
Speciated monoterpene measurements in rainforest air are scarce, but they are essential for understanding the contribution of these compounds to the overall reactivity of volatile organic compound (VOC) emissions towards the main atmospheric oxidants, such as hydroxyl radicals (OH), ozone (O3) and nitrate radicals (NO3). In this study, we present the chemical speciation of gas-phase monoterpenes measured in the tropical rainforest at the Amazon Tall Tower Observatory (ATTO, Amazonas, Brazil). Samples of VOCs were collected by two automated sampling systems positioned on a tower at 12 and 24ĝ€-m height and analysed using gas chromatography-flame ionization detection. The samples were collected in October 2015, representing the dry season, and compared with previous wet and dry season studies at the site. In addition, vertical profile measurements (at 12 and 24ĝ€-m) of total monoterpene mixing ratios were made using proton-transfer-reaction mass spectrometry. The results showed a distinctly different chemical speciation between day and night. For instance, α-pinene was more abundant during the day, whereas limonene was more abundant at night. Reactivity calculations showed that higher abundance does not generally imply higher reactivity. Furthermore, inter- and intra-annual results demonstrate similar chemodiversity during the dry seasons analysed. Simulations with a canopy exchange modelling system show simulated monoterpene mixing ratios that compare relatively well with the observed mixing ratios but also indicate the necessity of more experiments to enhance our understanding of in-canopy sinks of these compounds.
Cu2+ or Fe3+ Terpyridine/Aptamer Conjugates : Nucleoapzymes Catalyzing the Oxidation of Dopamine to Aminochrome
Biniuri, Yonatan ; Albada, Bauke ; Wolff, Mariusz ; Golub, Eyal ; Gelman, Dmitri ; Willner, Itamar - \ 2018
ACS Catalysis 8 (2018)3. - ISSN 2155-5435 - p. 1802 - 1809.
binding - catalyst - DNA - kinetic model - metal complex - molecular dynamics
A concept to tailor catalytic nucleic acid structures is introduced. The method involves the covalent conjugation of catalytically active metal ion complexes to sequence-specific ligand-binding nucleic acids (aptamers) yielding hybrids termed "nucleoapzymes" that act as enzyme-mimicking nucleic acid based structures. The concentration of the substrate by the aptamer binding site, in close proximity to the metal ion complex catalytic site, models the active site structures of native enzymes and yields catalytic systems. The possibility to tether the catalytic sites to the 3′- or 5′-ends of the aptamer, to internal bases associated with the aptamer sequence, or the feasibility to introduce arbitrary flexible nucleic acid chains between the metal ion complex catalyst and the aptamer binding site provides a rich arsenal of diverse nucleoapzymes for each chemical transformation. The synthesis and characterization of Cu2+-terpyridine nucleoapzymes and of Fe3+-terpyridine nucleoapzymes that catalyze the oxidation of dopamine to aminochrome by H2O2 is presented. One of the Cu2+-terpyridine nucleoapzymes reveals a 60-fold catalytic enhancement in comparison to the separated catalyst/aptamer units. Similarly, one Fe3+-terpyridine nucleoapzyme reveals a 140-fold catalytic enhancement in comparison to the separated catalyst/aptamer units. The different Cu2+-terpyridine nucleoapzymes reveal different activities, dominated by the relative spatial configurations of the catalytic site with respect to the dopamine (substrate) binding site. Molecular dynamics simulations were used to probe the association of the dopamine substrate to the different nucleoapzymes and to rationalize the experimental catalytic performance of the nucleoapzymes in terms of their computed structures. The nucleoapzyme concept bridges homogeneous catalysis with the binding properties of nucleic acids to yield catalysts operating in aqueous media.
Fungal volatile compounds induce production of the secondary metabolite Sodorifen in Serratia plymuthica PRI-2C
Schmidt, Ruth ; Jager, Victor de; Zühlke, Daniela ; Wolff, Christian ; Bernhardt, Jörg ; Cankar, Katarina ; Beekwilder, Jules ; IJcken, Wilfred van; Sleutels, Frank ; Boer, Wietse de; Riedel, Katharina ; Garbeva, Paolina - \ 2017
Scientific Reports 7 (2017). - ISSN 2045-2322
The ability of bacteria and fungi to communicate with each other is a remarkable aspect of the microbial world. It is recognized that volatile organic compounds (VOCs) act as communication signals, however the molecular responses by bacteria to fungal VOCs remain unknown. Here we perform transcriptomics and proteomics analyses of Serratia plymuthica PRI-2C exposed to VOCs emitted by the fungal pathogen Fusarium culmorum. We find that the bacterium responds to fungal VOCs with changes in gene and protein expression related to motility, signal transduction, energy metabolism, cell envelope biogenesis, and secondary metabolite production. Metabolomic analysis of the bacterium exposed to the fungal VOCs, gene cluster comparison, and heterologous co-expression of a terpene synthase and a methyltransferase revealed the production of the unusual terpene sodorifen in response to fungal VOCs. These results strongly suggest that VOCs are not only a metabolic waste but important compounds in the long-distance communication between fungi and bacteria.
Evaluation of mirid predatory bugs and release strategy for aphid control in sweet pepper
Messelink, G.J. ; Bloemhard, C.M.J. ; Hoogerbrugge, H. ; Schelt, J. van; Ingegno, B.L. ; Tavella, L. - \ 2015
Journal of Applied Entomology 139 (2015)5. - ISSN 0931-2048 - p. 333 - 341.
frankliniella-occidentalis thysanoptera - macrolophus-pygmaeus - tuta-absoluta - heteroptera miridae - thrips thysanoptera - nesidiocoris-tenuis - host plants - dicyphus - hemiptera - prey
Zoophytophagous predators of the family Miridae (Heteroptera), which feed both on plant and prey, often maintain a close relationship with certain host plants. In this study, we aimed to select a suitable mirid predatory bug for aphid control in sweet pepper. Four species were compared: Macrolophus pygmaeus (Rambur), Dicyphus errans (Wolff), Dicyphus tamaninii Wagner and Deraeocoris pallens (Reuter). They were assessed on their establishment on sweet pepper plants with and without supplemental food (eggs of the flour moth Ephestia kuehniella Zeller and decapsulated cysts of the brine shrimp Artemia franciscana Kellogg) and on their effects on aphids with releases before and after aphid infestations. None of the predator species was able to control an established population of aphids on sweet pepper plants; however, the predators M. pygmaeus and D. tamaninii could successfully reduce aphid populations when released prior to an artificially introduced aphid infestation. The best results were achieved with M. pygmaeus in combination with a weekly application of supplemental food. Hence, our results demonstrate that the order and level of plant colonization by mirid predators and aphids determines how successful biological control is. Further studies are needed to evaluate the performance of mirid predatory bugs in sweet pepper crops in commercial greenhouses with multiple pests and natural enemies, in particular to understand how increased variation in food sources affects their feeding behaviour and preferences.
Focus op kosten le vert veel op
Doornewaard, G.J. ; Haan, M.H.A. de - \ 2013
V-focus 10 (2013)2. - ISSN 1574-1575 - p. 38 - 40.
melkveehouderij - agrarisch natuurbeheer - bedrijfsresultaten in de landbouw - agrarische bedrijfsvoering - extensieve landbouw - natuurgebieden - friesland - dairy farming - agri-environment schemes - farm results - farm management - extensive farming - natural areas
Op de opbrengsten heb je weinig invloed, maar op de kosten wel. Vanuit die basisgedachte runt Koeien & Kansen-deelnemer Richard de Wolff zijn bedrijf. Dit leidt al jarenlang tot bijzonder goede economische prestaties, zo ook in 2011. Van de ruim 106 hectare cultuurgrond die De Wolff in gebruik heeft, bestaat echter ongeveer 25 hectare uit grond van Staatsbosbeheer waar maar beperkt voer van gewonnen kan worden. Zouden deze hectares voor de helft mee worden gerekend, dan komt de intensiteit uit op zo’n 13.000 kg melk per hectare. Om de resultaten van het bedrijf goed te kunnen beoordelen, is een vergelijking gemaakt met een spiegelgroep van bedrijven met een ongeveer overeenkomstige bedrijfsstructuur
The Association of Antarctic Krill Euphausia superba with the Under-Ice Habitat
Florentino De Souza Silva, A.P. ; Franeker, J.A. van; Siegel, V. ; Haraldsson, M. ; Strass, V. ; Meesters, H.W.G. ; Bathmann, U. ; Wolff, W.J. - \ 2012
PLoS ONE 7 (2012)2. - ISSN 1932-6203 - 11 p.
northern weddell sea - southern-ocean - pack-ice - community structure - lazarev sea - trophic relationships - population-dynamics - foraging behavior - elephant island - energy budgets
The association of Antarctic krill Euphausia superba with the under-ice habitat was investigated in the Lazarev Sea (Southern Ocean) during austral summer, autumn and winter. Data were obtained using novel Surface and Under Ice Trawls (SUIT), which sampled the 0-2 m surface layer both under sea ice and in open water. Average surface layer densities ranged between 0.8 individuals m(-2) in summer and autumn, and 2.7 individuals m(-2) in winter. In summer, under-ice densities of Antarctic krill were significantly higher than in open waters. In autumn, the opposite pattern was observed. Under winter sea ice, densities were often low, but repeatedly far exceeded summer and autumn maxima. Statistical models showed that during summer high densities of Antarctic krill in the 0-2 m layer were associated with high ice coverage and shallow mixed layer depths, among other factors. In autumn and winter, density was related to hydrographical parameters. Average under-ice densities from the 0-2 m layer were higher than corresponding values from the 0-200 m layer collected with Rectangular Midwater Trawls (RMT) in summer. In winter, under-ice densities far surpassed maximum 0-200 m densities on several occasions. This indicates that the importance of the ice-water interface layer may be under-estimated by the pelagic nets and sonars commonly used to estimate the population size of Antarctic krill for management purposes, due to their limited ability to sample this habitat. Our results provide evidence for an almost year-round association of Antarctic krill with the under-ice habitat, hundreds of kilometres into the ice-covered area of the Lazarev Sea. Local concentrations of postlarval Antarctic krill under winter sea ice suggest that sea ice biota are important for their winter survival. These findings emphasise the susceptibility of an ecological key species to changing sea ice habitats, suggesting potential ramifications on Antarctic ecosystems induced by climate change
Macrofauna under sea ice and in the open surface layer of the Lazarev Sea, Southern Ocean
Florentino De Souza Silva, A.P. ; Franeker, J.A. van; Cisewski, B. ; Leach, H. ; Putte, A.P. van de; Meesters, H.W.G. ; Bathmann, U. ; Wolff, W.J. - \ 2011
Deep-Sea Research. Part II, tropical studies in oceanography 58 (2011)19-20. - ISSN 0967-0645 - p. 1948 - 1961.
western weddell sea - krill euphausia-superba - community structure - antarctic krill - pack-ice - sagitta-gazellae - zooplankton community - callianira-antarctica - vertical-distribution - limacina-helicina
A new fishing gear was used to sample the macrozooplankton and micronekton community in the surface layer (0–2 m) under ice and in open water, the Surface and Under Ice Trawl (SUIT). In total, 57 quantitative hauls were conducted in the Lazarev Sea (Southern Ocean) during 3 different seasons (autumn 2004, winter 2006, summer 2007/2008). At least 46 species from eight phyla were caught in all 3 seasons combined. Biomass density was dominated by Antarctic krill Euphausia superba. The average biomass density was highest under the winter sea ice and lowest under the young ice in autumn. In summer, macrozooplankton biomass was dominated by ctenophores in open water and by Antarctic krill under ice. The community composition varied significantly among seasons, and according to the presence of sea ice. The response of the community composition to the presence of sea ice was influenced by species that were significantly more abundant in open water than under ice (Cyllopus lucasii, Hyperiella dilatata), only seasonally abundant under ice (Clione antarctica), or significantly associated with sea ice (Eusirus laticarpus). A number of abundant species showed distinct diel patterns in the surface occurrence both under ice and in open water, indicating that the surface layer serves as a foraging ground predominantly at night. Our results emphasize the potential of a number of non-euphausiid macrozooplankton and micronekton species to act as energy transmitters between the production of sea ice biota and the pelagic food web. By providing a regional-scale quantitative record of macrofauna under Antarctic sea ice covering 3 seasons, this study adds new and direct evidence that the ice-water interface layer is a major functional node in the ecosystem of the Antarctic seasonal sea ice zone
Identification of imprinted genes subject to parent-of-origin specific expression in Arabidopsis thaliana seeds.
Mckeown, P.C. ; Laouielle-Duprat, S. ; Prins, J.C.P. ; Wolff, P. de; Schmid, M.W. ; Donoghue, M.T. ; Fort, A. ; Duszynska, D. ; Comte, A. ; Lao, N.T. ; Wennblom, T.J. ; Smant, G. ; Köhler, C. ; Grossniklaus, U. ; Spillane, C. - \ 2011
BMC Plant Biology 11 (2011). - ISSN 1471-2229 - 20 p.
dna methylation - transcriptome analysis - maize endosperm - life-cycle - cell-cycle - cdna-aflp - in-vivo - protein - genome - medea
Background: Epigenetic regulation of gene dosage by genomic imprinting of some autosomal genes facilitates normal reproductive development in both mammals and flowering plants. While many imprinted genes have been identified and intensively studied in mammals, smaller numbers have been characterized in flowering plants, mostly in Arabidopsis thaliana. Identification of additional imprinted loci in flowering plants by genome-wide screening for parent-of-origin specific uniparental expression in seed tissues will facilitate our understanding of the origins and functions of imprinted genes in flowering plants. Results: cDNA-AFLP can detect allele-specific expression that is parent-of-origin dependent for expressed genes in which restriction site polymorphisms exist in the transcripts derived from each allele. Using a genome-wide cDNA-AFLP screen surveying allele-specific expression of 4500 transcript-derived fragments, we report the identification of 52 maternally expressed genes (MEGs) displaying parent-of-origin dependent expression patterns in Arabidopsis siliques containing F1 hybrid seeds (3, 4 and 5 days after pollination). We identified these MEGs by developing a bioinformatics tool (GenFrag) which can directly determine the identities of transcript-derived fragments from (i) their size and (ii) which selective nucleotides were added to the primers used to generate them. Hence, GenFrag facilitates increased throughput for genome-wide cDNA-AFLP fragment analyses. The 52 MEGs we identified were further filtered for high expression levels in the endosperm relative to the seed coat to identify the candidate genes most likely representing novel imprinted genes expressed in the endosperm of Arabidopsis thaliana. Expression in seed tissues of the three top-ranked candidate genes, ATCDC48, PDE120 and MS5-like, was confirmed by Laser-Capture Microdissection and qRT-PCR analysis. Maternal-specific expression of these genes in Arabidopsis thaliana F1 seeds was confirmed via allele-specific transcript analysis across a range of different accessions. Differentially methylated regions were identified adjacent to ATCDC48 and PDE120, which may represent candidate imprinting control regions. Finally, we demonstrate that expression levels of these three genes in vegetative tissues are MET1-dependent, while their uniparental maternal expression in the seed is not dependent on MET1. Conclusions: Using a cDNA-AFLP transcriptome profiling approach, we have identified three genes, ATCDC48, PDE120 and MS5-like which represent novel maternally expressed imprinted genes in the Arabidopsis thaliana seed. The extent of overlap between our cDNA-AFLP screen for maternally expressed imprinted genes, and other screens for imprinted and endosperm-expressed genes is discussed.
Acuut nierfalen door vergiftiging met gordijnzwam
Bouhbouh, S. ; Haverkamp, L. ; Kuyper, T.W. ; Wolff, F.A. ; Barendregt, J.N.M. - \ 2011
Nederlands Tijdschrift voor Geneeskunde 155 (2011). - ISSN 0028-2162 - p. A3019 - A3019.
Achtergrond Inname van bepaalde soorten gordijnzwammen kan leiden tot nierfalen. In Nederland is deze paddenstoelvergiftiging niet eerder beschreven. Casus Een 58-jarige vrouw presenteerde zich met hoofdpijn, braken en afnemende urineproductie, voorafgegaan door enkele dagen met pijnlijke, branderige dorst en malaise. Er was sprake van acuut en irreversibel nierfalen zonder bekende achterliggende aandoening. Volgens de anamnese had zij 2 dagen voor de eerste ziekteverschijnselen ragout gegeten met in het bos geplukte paddenstoelen. In een nierbiopt werd een interstitiële nefritis met necrose van proximale tubuli vastgesteld. In een restant van de ragout werden 2 fragmenten gevonden van een gordijnzwam, waarschijnlijk behorend tot het complex Cortinarius cinnamomeus (kaneelkleurige gordijnzwam). De eerste symptomen en het beloop passen bij vergiftiging door Cortinarius zoals beschreven in de literatuur. Ondanks hemodialyse en toediening van acetylcysteïne en glucocorticoïden herstelde haar nierfunctie niet. Conclusie Deze casus is de eerst beschreven paddenstoelvergiftiging met een gordijnzwam (Cortinarius sp.) in Nederland.
Unsuitability of TAC management within an ecosystem approach to fisheries: An ecological perspective
Reiss, H. ; Greenstreet, S.P.R. ; Robinson, L. ; Ehrich, S. ; Jorgensen, L.L. ; Piet, G.J. ; Wolff, W.J. - \ 2010
Journal of Sea Research 63 (2010)2. - ISSN 1385-1101 - p. 85 - 92.
marine protected areas - sea fish community - north-sea - mixed fisheries - sustainable use - catch rates - indicators - resources - fleet - simulation
Fisheries management in European waters is gradually moving from a single-species perspective towards a more holistic ecosystem approach to management (EAM), acknowledging the need to take all ecosystem components into account. Prerequisite within an EAM is the need for management processes that directly influence the ecological effects of fishing, such as the mortality of target and non-target species. Up until recently, placing limits on the quantities of fish that can be landed, through the imposition of annual total allowable catches (TACs) for the target species, has been the principal management mechanism employed. However, pressure on non-target components of marine ecosystems is more closely linked to prevailing levels of fishing activity, so only if TACs are closely related to subsequent fishing effort will TAC management serve to control the broader ecosystem impacts of fishing. We show that in the mixed fisheries that characterise the North Sea, the linkage between variation in TAC and the resulting fishing effort is in fact generally weak. Reliance solely on TACs to regulate fishing activity is therefore unlikely to mitigate the impacts of fishing on non-target species. Consequently, we conclude that the relationship between TACs and effort is insufficient for TACs to be used as the principal management tool within an EAM. The implications, and some alternatives, for fisheries management are discussed
Effect of vegetation on air quality and fluxes of NOx and PM-10 along a highway
Hofschreuder, P. ; Kuypers, V.H.M. ; Vries, B. de; Janssen, S. ; Maerschalck, B. de; Erbrink, H.J. ; Wolff, J. de - \ 2010
In: Proceedings of the international conference on Local Air Quality and its Interactions with Vegetation, Antwerp, Belgium, 21 - 22 January, 2010. - Antwerpen, België : VITO / University of Antwerp - p. 11 - 16.
Effects of fishing disturbance on benthic communities and secondary production within an intensively fished area
Reiss, H. ; Greenstreet, S.P.R. ; Sieben, K. ; Ehrich, S. ; Piet, G.J. ; Quirijns, F. ; Robinson, L. ; Wolff, W.J. ; Kroncke, I. - \ 2009
Marine Ecology Progress Series 394 (2009). - ISSN 0171-8630 - p. 201 - 213.
southern north-sea - plaice pleuronectes-platessa - bottom trawling disturbance - atlantic shelf seas - different habitats - invertebrate communities - infaunal communities - spatial-distribution - trophic structure - grand-banks
Demersal fishing alters seabed habitats and affects the structure and functioning of benthic invertebrate communities. At a critical level of disturbance, such communities may approach an equilibrium disturbed state in which a further increase in disturbance has little additional impact. Such arguments have been used to suggest that an ecosystem approach to fisheries management (EAFM) should protect lightly fished areas and deflect fishing activity into areas that are already intensively fished. In this study, the effects of variation in fishing disturbance on the secondary production, species diversity, abundance, biomass, and community structure of benthic infauna were examined in a region of the German Bight (North Sea) that has been intensively trawled for decades. Variation in fishing disturbance across the study area was determined using automated position registration and vessel monitoring through satellite. Even in such a heavily fished area, linear regression analyses revealed that biomass, species richness, and production decreased significantly with increasing fishing intensity. Although redundancy analyses (RDA) showed that sediment characteristics were influential in determining the structure of the infauna community, partial RDA revealed that fishing continued to have an impact on community structure in terms of biomass. These results suggest that, in implementing an EAFM, managers will need to consider the possibility that, even in areas with high chronic fishing disturbance, further increases in fishing activity may still cause additional damage to benthic invertebrate communities.
Flora - vegetatie voor een betere luchtkwaliteit; meten is weten - vegetatie voor een betere luchtkwaliteit.
Erbrink, H.J. ; Hofschreuder, P. ; Jansen, S. ; Kuypers, V.H.M. ; Maerschalck, B. de; Ruyten, F. ; Vries, E.A. de; Wolff, J. - \ 2009
Delft : Innovatieprogramma NederLandBovenWater (Dienst Verkeer en Scheepvaart van Rijkswaterstaat DVS-2009-013) - 197 p.
In dit document worden de resultaten gepresenteerd van een meetproef langs de A50 bij Valburg-Heteren waar de effecten van een beplantingsstructuur op de luchtkwaliteit zijn gemeten. Voor fijnstof (PM10) is geen aanwijzing gevonden dat vegetatie belangrijke hoeveelheden afvangt. Voor stikstofdioxide (NO2) is sprake van een beperkte afname. Voor beide stoffen geldt dat vlak achter de vegetatie een verhoogde concentratie is gemeten. Voor fijnstof is een second opinion uitgevoerd waarbij een maximale reductie achter een vegetatie bestaande uit Grove Dennen is gemeten van 10%, ref: DVS-006-2009. Voor de modellering van vegetatie is een model beschikbaar. De modelresultaten laten hetzelfde beeld zien als de metingen.
Genetic population structure of marine fish: mismatch between biological and fisheries management units
Reiss, H. ; Hoarau, G. ; Dickey-Collas, M. ; Wolff, W.J. - \ 2009
Fish and Fisheries 10 (2009)4. - ISSN 1467-2960 - p. 361 - 395.
cod gadus-morhua - herring clupea-harengus - plaice pleuronectes-platessa - capelin mallotus-villosus - hake merluccius-merluccius - dna-sequence variation - mackerel trachurus-trachurus - north-sea plaice - pan-i locus - halibut reinhardtius-hippoglossoides
An essential prerequisite of a sustainable fisheries management is the matching of biologically relevant processes and management action. In fisheries management and assessment, fish stocks are the fundamental biological unit, but the reasoning for the operational management unit is often indistinct and mismatches between the biology and the management action frequently occur. Despite the plethora of population genetic data on marine fishes, to date little or no use is made of the information, despite the fact that the detection of genetic differentiation may indicate reproductively distinct populations. Here, we discuss key aspects of genetic population differentiation in the context of their importance for fisheries management. Furthermore, we evaluate the population structure of all 32 managed marine fish species in the north-east Atlantic and relate this structure to current management units and practice. Although a large number of studies on genetic population structure have been published in the last decades, data are still rare for most exploited species. The mismatch between genetic population structure and the current management units found for six species (Gadus morhua, Melanogrammus aeglefinus, Merlangius merlangus, Micromesistius poutassou, Merluccius merluccius and Clupea harengus), emphasizes the need for a revision of these units and questions the appropriateness of current management measures. The implementation of complex and dynamic population structures into novel and less static management procedures should be a primary task for future fisheries management approaches
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