Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

    Records 1 - 20 / 34

    • help
    • print

      Print search results

    • export

      Export search results

    • alert
      We will mail you new results for this query: q=Knoben
    Check title to add to marked list
    A Global Survey on the Perceptions and Impacts of Gender Inequality in the Earth and Space Sciences
    Popp, Andrea L. ; Lutz, Stefanie R. ; Khatami, Sina ; Emmerik, Tim H.M. van; Knoben, Wouter J.M. - \ 2019
    Earth and Space Science 6 (2019)8. - ISSN 2333-5084 - p. 1460 - 1468.
    gender inequality - leaky pipeline - women in Earth and space science

    The leaky pipeline phenomenon refers to the disproportionate decline of female scientists at higher academic career levels and is a major problem in the natural sciences. Identifying the underlying causes is challenging, and thus, solving the problem remains difficult. To better understand the reasons for the leaky pipeline, we assess the perceptions and impacts of gender bias and imbalance—two major drivers of the leakage—at different academic career levels with an anonymous survey in geoscience academia (n=1,220). The survey results show that both genders view male geoscientists as substantially more gender biased than female scientists. Moreover, female geoscientists are more than twice as likely to experience negative gender bias at their workplaces and scientific organizations compared to male geoscientists. There are also pronounced gender differences regarding (i) the relevance of role models, (ii) family-friendly working conditions, and (iii) the approval of gender quotas for academic positions. Given the male dominance in senior career levels, our results emphasize that those feeling less impacted by the negative consequences of gender bias and imbalance are the ones in position to tackle the problem. We thus call for actions to better address gender biases and to ensure a balanced gender representation at decision-making levels to ultimately retain more women in geoscience academia.

    Twenty-three unsolved problems in hydrology (UPH)–a community perspective
    Blöschl, Günter ; Bierkens, Marc F.P. ; Chambel, Antonio ; Cudennec, Christophe ; Destouni, Georgia ; Fiori, Aldo ; Kirchner, James W. ; McDonnell, Jeffrey J. ; Savenije, Hubert H.G. ; Sivapalan, Murugesu ; Stumpp, Christine ; Toth, Elena ; Volpi, Elena ; Carr, Gemma ; Lupton, Claire ; Salinas, Josè ; Széles, Borbála ; Viglione, Alberto ; Aksoy, Hafzullah ; Allen, Scott T. ; Amin, Anam ; Andréassian, Vazken ; Arheimer, Berit ; Aryal, Santosh K. ; Baker, Victor ; Bardsley, Earl ; Barendrecht, Marlies H. ; Bartosova, Alena ; Batelaan, Okke ; Berghuijs, Wouter R. ; Beven, Keith ; Blume, Theresa ; Bogaard, Thom ; Borges de Amorim, Pablo ; Böttcher, Michael E. ; Boulet, Gilles ; Breinl, Korbinian ; Brilly, Mitja ; Brocca, Luca ; Buytaert, Wouter ; Castellarin, Attilio ; Castelletti, Andrea ; Chen, Xiaohong ; Chen, Yangbo ; Chen, Yuanfang ; Chifflard, Peter ; Claps, Pierluigi ; Clark, Martyn P. ; Collins, Adrian L. ; Croke, Barry ; Dathe, Annette ; David, Paula C. ; Barros, Felipe P.J. de; Rooij, Gerrit de; Baldassarre, Giuliano Di; Driscoll, Jessica M. ; Duethmann, Doris ; Dwivedi, Ravindra ; Eris, Ebru ; Farmer, William H. ; Feiccabrino, James ; Ferguson, Grant ; Ferrari, Ennio ; Ferraris, Stefano ; Fersch, Benjamin ; Finger, David ; Foglia, Laura ; Fowler, Keirnan ; Gartsman, Boris ; Gascoin, Simon ; Gaume, Eric ; Gelfan, Alexander ; Geris, Josie ; Gharari, Shervan ; Gleeson, Tom ; Glendell, Miriam ; Gonzalez Bevacqua, Alena ; González-Dugo, María P. ; Grimaldi, Salvatore ; Gupta, A.B. ; Guse, Björn ; Han, Dawei ; Hannah, David ; Harpold, Adrian ; Haun, Stefan ; Heal, Kate ; Helfricht, Kay ; Herrnegger, Mathew ; Hipsey, Matthew ; Hlaváčiková, Hana ; Hohmann, Clara ; Holko, Ladislav ; Hopkinson, Christopher ; Hrachowitz, Markus ; Illangasekare, Tissa H. ; Inam, Azhar ; Innocente, Camyla ; Istanbulluoglu, Erkan ; Jarihani, Ben ; Kalantari, Zahra ; Kalvans, Andis ; Khanal, Sonu ; Khatami, Sina ; Kiesel, Jens ; Kirkby, Mike ; Knoben, Wouter ; Kochanek, Krzysztof ; Kohnová, Silvia ; Kolechkina, Alla ; Krause, Stefan ; Kreamer, David ; Kreibich, Heidi ; Kunstmann, Harald ; Lange, Holger ; Liberato, Margarida L.R. ; Lindquist, Eric ; Link, Timothy ; Liu, Junguo ; Loucks, Daniel Peter ; Luce, Charles ; Mahé, Gil ; Makarieva, Olga ; Malard, Julien ; Mashtayeva, Shamshagul ; Maskey, Shreedhar ; Mas-Pla, Josep ; Mavrova-Guirguinova, Maria ; Mazzoleni, Maurizio ; Mernild, Sebastian ; Misstear, Bruce Dudley ; Montanari, Alberto ; Müller-Thomy, Hannes ; Nabizadeh, Alireza ; Nardi, Fernando ; Neale, Christopher ; Nesterova, Nataliia ; Nurtaev, Bakhram ; Odongo, Vincent O. ; Panda, Subhabrata ; Pande, Saket ; Pang, Zhonghe ; Papacharalampous, Georgia ; Perrin, Charles ; Pfister, Laurent ; Pimentel, Rafael ; Polo, María J. ; Post, David ; Prieto Sierra, Cristina ; Ramos, Maria Helena ; Renner, Maik ; Reynolds, José Eduardo ; Ridolfi, Elena ; Rigon, Riccardo ; Riva, Monica ; Robertson, David E. ; Rosso, Renzo ; Roy, Tirthankar ; Sá, João H.M. ; Salvadori, Gianfausto ; Sandells, Mel ; Schaefli, Bettina ; Schumann, Andreas ; Scolobig, Anna ; Seibert, Jan ; Servat, Eric ; Shafiei, Mojtaba ; Sharma, Ashish ; Sidibe, Moussa ; Sidle, Roy C. ; Skaugen, Thomas ; Smith, Hugh ; Spiessl, Sabine M. ; Stein, Lina ; Steinsland, Ingelin ; Strasser, Ulrich ; Su, Bob ; Szolgay, Jan ; Tarboton, David ; Tauro, Flavia ; Thirel, Guillaume ; Tian, Fuqiang ; Tong, Rui ; Tussupova, Kamshat ; Tyralis, Hristos ; Uijlenhoet, Remko ; Beek, Rens van; Ent, Ruud J. van der; Ploeg, Martine van der; Loon, Anne F. Van; Meerveld, Ilja van; Nooijen, Ronald van; Oel, Pieter R. van; Vidal, Jean Philippe ; Freyberg, Jana von; Vorogushyn, Sergiy ; Wachniew, Przemyslaw ; Wade, Andrew J. ; Ward, Philip ; Westerberg, Ida K. ; White, Christopher ; Wood, Eric F. ; Woods, Ross ; Xu, Zongxue ; Yilmaz, Koray K. ; Zhang, Yongqiang - \ 2019
    Hydrological Sciences Journal 64 (2019)10. - ISSN 0262-6667 - p. 1141 - 1158.
    hydrology - interdisciplinary - knowledge gaps - research agenda - science questions

    This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-based understanding of hydrological variability and causality at all space and time scales. Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come.

    Overzichtskaart Bijeninitiatieven
    Knoben, Nieke ; Zelfde, M. van 't; Biesmeijer, Koos ; Groot, G.A. de - \ 2018
    EIS
    Referenties en maatlatten voor natuurlijke watertypen voor de Kaderrichtlijn Water 2021-2027
    Altenburg, W. ; Arts, G. ; Baretta-Bekker, J.G. ; Berg, M.S. van den; Broek Broek, T. van den; Buskens, R. ; Bijkerk, R. ; Coops, H.C. ; Dam, H. van; Ee, G. van; Evers, C.H.M. ; Franken, R. ; Higler, B. ; Ietswaart, T. ; Jaarsma, N. ; Jong, D.J. de; Joosten, A.M.T. ; Klinge, M. ; Knoben, R.A.E. ; Kranenbarg, J. ; Loon, W.M.G.M. van; Noordhuis, R. ; Pot, R. ; Twisk, F. ; Verdonschot, P.F.M. ; Vlek, H. ; Backx, J.J.G.M. ; Beers, M. ; Buijse, A.D. ; Duursema, G. ; Fagel, M. ; Leeuw, J. de; Molen, J. van der; Nijboer, R.C. ; Postma, J. ; Vriese, T. ; Duijts, R. ; Hartholt, J.G. ; Jager, Z. ; Stikvoort, E.C. ; Walvoort, D. - \ 2018
    Amersfoort : Stowa (Stowa rapport 2018-49) - ISBN 9789057738135 - 481
    Gebruiker samenvatting en leeswijzer van “Report Honeybee Surveillance Program the Netherlands, 2015 – 2016”
    Steen, J.J.M. van der; Knoben, Nieke ; Biesmeijer, K. - \ 2016
    Wageningen : Bijen@wur - 3
    Data from: Effects of multi-generational stress exposure and offspring environment on the expression and persistence of transgenerational effects in Arabidopsis thaliana
    Groot, M. ; Kooke, R. ; Knoben, Nieke ; Vergeer, P. ; Keurentjes, J.J.B. ; Ouborg, N.J. ; Verhoeven, Koen J.F. - \ 2016
    Wageningen University & Research
    grandparental effects - great-parental effects - parental effects - salt stress - transgenerational plasticity
    Phenotype data of A. thaliana plants grown in either a field environment or in a climate chamber environment. In the climate chamber environment plants were grown under control conditions or salt stress.
    Referenties en maatlatten voor natuurlijke watertypen voor de kaderrichtlijn water 2015-2021 ; 2e dr.
    Altenburg, W. ; Arts, G. ; Baretta-Bekker, J.G. ; Berg, M.S. van den; Broek, T. van den; Buskens, R. ; Bijkerk, R. ; Coops, H.C. ; Dam, H. van; Ee, G. van; Evers, C.H.M. ; Franken, R. ; Higler, B. ; Ietswaart, T. ; Jaarsma, N. ; Jong, D.J. de; Joosten, A.M.T. ; Klinge, M. ; Knoben, R.A.E. ; Kranenbarg, J. ; Loon, W.M.G.M. van; Noordhuis, R. ; Pot, R. ; Twisk, F. ; Verdonschot, P.F.M. ; Vlek, H. ; Wolfstein, K. ; Backx, J.J.G.M. ; Beers, M. ; Buijse, A.D. ; Duursema, G. ; Fagel, M. ; Leeuw, J. de; Molen, J. van der; Nijboer, R.C. ; Postma, J. ; Vriese, T. ; Molen, D.T. van der; Herpen, F.C.J. van; Nieuwerburgh, L.L.J. van - \ 2016
    Amersfoort : Stowa (Stowa rapport 2012-31) - 466
    In het najaar van 2012 werd een geactualiseerde versie van het document Referenties en maatlatten voor natuurlijke watertypen voor de Kaderrichtlijn Water 2015-2021 vastgesteld. Uit het gebruik van deze maatlatten en het programmeren van de Aquokit Biologie (webservice voor toetsen van ecologische kwaliteit met deze maatlatten ontwikkeld door het InformatieHuis Water) bleek dat er correcties en verduidelijkingen nodig waren om te zorgen voor een juiste en consistente toepassing van de maatlatten. Deze correcties en verduidelijkingen zijn doorgevoerd in deze tweede druk. In bijlage 14 is een overzicht opgenomen van de aanpassingen in de maatlat ten opzichte van de eerst druk.
    De bijdrage van (wilde) bestuivers aan een hoogwaardige teelt van peren en aardbeien : nieuwe kwantitative inzichten in de diensten geleverd door bestuivende insecten aan de fruitteeltsector in Nederland
    Groot, G.A. de; Knoben, Nieke ; Kats, R.J.M. van; Dimmers, W.J. ; Zelfde, M. van 't; Reemer, M. ; Biesmeijer, Koos ; Kleijn, D. - \ 2016
    Wageningen : Alterra, Wageningen-UR (Alterra-rapport 2716) - 67
    pyrus communis - peren - fragaria ananassa - aardbeien - bestuiving - bestuivers (dieren) - apidae - honingbijen - bombus - syrphidae - wilde bijenvolken - nederland - pyrus communis - pears - fragaria ananassa - strawberries - pollination - pollinators - apidae - honey bees - bombus - syrphidae - wild honey bee colonies - netherlands
    Effects of Multi-Generational Stress Exposure and Offspring Environment on the Expression and Persistence of Transgenerational Effects in Arabidopsis thaliana
    Groot, Maartje P. ; Kooke, R. ; Knoben, Nieke ; Vergeer, P. ; Keurentjes, J.J.B. ; Ouborg, N.J. ; Verhoeven, Koen J.F. - \ 2016
    PLoS ONE 11 (2016)3. - ISSN 1932-6203 - 16 p.
    Plant phenotypes can be affected by environments experienced by their parents. Parental environmental effects are reported for the first offspring generation and some studies showed persisting environmental effects in second and further offspring generations. However, the expression of these transgenerational effects proved context-dependent and their reproducibility can be low. Here we study the context-dependency of transgenerational effects by evaluating parental and transgenerational effects under a range of parental induction and offspring evaluation conditions. We systematically evaluated two factors that can influence the expression of transgenerational effects: single- versus multiple-generation exposure and offspring environment. For this purpose, we exposed a single homozygous Arabidopsis thaliana Col-0 line to salt stress for up to three generations and evaluated offspring performance under control and salt conditions in a climate chamber and in a natural environment. Parental as well as transgenerational effects were observed in almost all traits and all environments and traced back as far as great-grandparental environments. The length of exposure exerted strong effects; multiple-generation exposure often reduced the expression of the parental effect compared to single-generation exposure. Furthermore, the expression of transgenerational effects strongly depended on offspring environment for rosette diameter and flowering time, with opposite effects observed in field and greenhouse evaluation environments. Our results provide important new insights into the occurrence of transgenerational effects and contribute to a better understanding of the context-dependency of these effects.
    Kwaliteit monitoringsgegevens niet altijd voldoende
    Netten, J.J.C. ; Evers, N. ; Wal, B. van der; Knoben, R. - \ 2010
    H2O : tijdschrift voor watervoorziening en afvalwaterbehandeling 43 (2010)16. - ISSN 0166-8439 - p. 26 - 28.
    hydrologische gegevens - waterkwaliteit - monitoring - kwaliteitsnormen - limnologie - zoetwaterecologie - databanken - hydrological data - water quality - monitoring - quality standards - limnology - freshwater ecology - databases
    Al vanaf de jaren '70 verzamelen waterschappen gegevens over de waterkwaliteit. Sinds midden jaren '90 worden deze data gebundeld in de Limnodata Neerlandica. Deze gegevens kunnen gebruikt worden voor het analyseren van het functioneren van het ecosysteem (toestand) en voor het bepalen en volgen van effecten van bijvoorbeeld het klimaat en door de mens gepleegde ingrepen (trend). Het is dan wel belangrijk dat de gegevens kwalitatief en kwantitatief toereikend zijn. Genoemde auteurs hebben een analyse verricht naar de kwaliteit en compleetheid van gegevens in de Limnodata Neerlandica. Deze analyse bevestigt het vermoeden dat de kwaliteit van de gegevens niet altijd voldoende is. Dit artikel bevat aanbevelingen voor verbetering van de kwaliteit van de meetgegevens van de waterschappen en daarmee die van de Limnodata Neerlandica.
    Direct measurement of depletion and hydrodynamic forces in solutions of a reversible supramolecular polymer
    Knoben, W. ; Besseling, N.A.M. ; Cohen Stuart, M.A. - \ 2007
    Langmuir 23 (2007)11. - ISSN 0743-7463 - p. 6095 - 6105.
    equilibrium polymers - chain stoppers - surface forces - particles - dispersions - microscope - stability - thermodynamics - suspensions - dynamics
    In this paper, the investigation of surface forces in semidilute solutions of a nonadsorbing hydrogen-bonded reversible supramolecular polymer is described. Colloidal probe atomic force microscopy was used for direct measurement of depletion forces. Hydrodynamic drag on the AFM cantilever with the colloidal probe was measured both far away from and close to the planar substrate surface. The results indicate that the presence of the depletion layer causes slip at the surfaces with a large apparent slip length. Our analysis explains how the presence of slip enables the measurement of (relatively weak) depletion forces in solutions with a high viscosity by significantly reducing the hydrodynamic forces. The range and magnitude of the measured depletion forces are qualitatively in agreement with previous experiments and theoretical predictions. Due to the relatively large experimental error, no quantitative conclusions can be drawn. Depletion-induced phase separation of suspensions of stearylated silica particles was also observed. Phase separation becomes more pronounced with increasing polymer concentration. --------------------------------------------------------------------------------
    Rheology of a reversible supramolecular polymer studied by comparison of the effects of temperature and chain stoppers
    Knoben, W. ; Besseling, N.A.M. ; Cohen Stuart, M.A. - \ 2007
    Journal of Chemical Physics 126 (2007). - ISSN 0021-9606 - p. 024907 - 024907.
    stimuli-responsive polymers - biomedical applications - coordination polymers - equilibrium polymers - wormlike micelles - surface forces - dynamics - molecules - monomers
    The rheology of a reversible supramolecular polymer is studied by comparing the effects of an increase in temperature and the addition of chain stoppers. The dependence of the zero-shear viscosity and the terminal relaxation time on temperature is exponential, and the activation energy for viscous flow can be calculated. Above a critical stopper fraction, power laws describe the stopper dependence of the viscosity and relaxation time. A simple model for the effect of the addition of chain stoppers on the average degree of polymerization adequately describes the results. A comparison of flow curves at several temperatures and stopper fractions reveals considerable differences between solutions with the same zero-shear viscosity. These are mainly associated with differences in the terminal relaxation time. A mechanism of shear-induced alignment and subsequent elongation of chains is proposed, with which the experimental results are consistent.
    Chain stoppers in reversible supramolecular polymer solutions
    Knoben, W. - \ 2007
    Wageningen University. Promotor(en): Martien Cohen Stuart, co-promotor(en): N.A.M. Besseling. - [S.l.] : s.n. - ISBN 9789085045748 - 194
    polymeren - polymerisatie - fysische chemie - fysicochemische eigenschappen - supramoleculaire chemie - polymers - polymerization - physical chemistry - physicochemical properties - supramolecular chemistry - cum laude
    cum laude graduation (with distinction)
    Multiple shear-banding transitions in a supramolecular polymer solution
    Gucht, J. van der; Lemmers, M. ; Knoben, W. ; Besseling, N.A.M. ; Lettinga, M.P. - \ 2006
    Physical Review Letters 97 (2006)10. - ISSN 0031-9007 - p. 108301/1 - 108301/4.
    wormlike micelles - rheology - dynamics - flow
    We report on the nonlinear rheology of a reversible supramolecular polymer based on hydrogen bonding. The coupling between the flow-induced chain alignment and breakage and recombination of bonds between monomers leads to a very unusual flow behavior. Measured velocity profiles indicate three different shear-banding regimes upon increasing shear rate, each with different characteristics. While the first of these regimes has features of a mechanical instability, the second shear-banding regime is related to a shear-induced phase separation and the appearance of birefringent textures. The shear-induced phase itself becomes unstable at very high shear rates, giving rise to a third banding regime
    Long-range depletion forces induced by associating small molecules
    Knoben, W. ; Besseling, N.A.M. ; Cohen Stuart, M.A. - \ 2006
    Physical Review Letters 97 (2006)6. - ISSN 0031-9007 - p. 068301/1 - 068301/4.
    supramolecular polymers - equilibrium polymers - chain stoppers - surface forces - dispersions - microscope - micelles - dynamics
    This is the first report of experimental observations of depletion interactions in solutions of a (hydrogen-bonded) reversible supramolecular polymer. Depletion forces were measured directly by colloidal probe atomic force microscopy. The range of the depletion force is consistent with existing independent experimental data. The interaction can be tuned by adding monofunctional chain stoppers to the solution, a possibility which is unique to supramolecular polymers. The depletion force is shown to be strong enough to induce phase separation in a colloidal suspension.
    Chain stoppers in reversible supramolecular polymer solutions studied by static and dynamic light scattering and osmometry
    Knoben, W. ; Besseling, N.A.M. ; Cohen Stuart, M.A. - \ 2006
    Macromolecules 39 (2006)4. - ISSN 0024-9297 - p. 2643 - 2653.
    thread-like micelles - worm-like micelles - semidilute regime - molecules - thickness - rheology - behavior - solvent - systems - stress
    The effect of the addition of chain stoppers to solutions of hydrogen-bonded reversible supramolecular polymers was studied by vapor pressure osmometry and static and dynamic light scattering. Vapor pressure osmometry showed that within the range of concentrations studied the average degree of polymerization is independent of the overall monomer concentration and roughly inversely proportional to the mole fraction of chain stoppers, in agreement with theoretical predictions. The correlation length as measured by static light scattering has a maximum at the overlap concentration in solutions without chain stoppers. In the presence of a fixed fraction of chain stoppers, the results coincide with those without chain stoppers at low and high concentrations, but there is a plateau in the correlation length at intermediate concentrations. From the data, information about the association constant and the persistence length of the chains is obtained. The effectiveness of the chain stopper is discussed, and the results from osmometry and static light scattering are compared. Dynamic light scattering was used to measure the time autocorrelation function. From the characteristic decay time, the hydrodynamic correlation length was calculated. For solutions above the overlap concentration, the distribution of decay times showed a second peak at longer times. It is not yet fully understood what the mechanism behind this slow mode is
    Dynamics of reversible supramolecular polymers : independent determination of the dependence of linear viscosity on concentration and chain length by using chain stoppers
    Knoben, W. ; Besseling, N.A.M. ; Bouteiller, L. ; Cohen Stuart, M.A. - \ 2005
    Physical Chemistry Chemical Physics 7 (2005)11. - ISSN 1463-9076 - p. 2390 - 2398.
    living polymers - micellar solutions - complex fluids - relaxation - microrheology - systems - moduli - rheology
    The linear viscoelasticity of solutions of a hydrogen bonded reversible supramolecular polymer in the presence of a chain stopper was studied by rheometry and by dynamic light scattering using probe particles. The use of chain stoppers enabled the independent variation of the degree of polymerisation and the monomer concentration, and the effect of both parameters on rheology was investigated. Scaling exponents were obtained for the chain length and concentration dependence of the zero-shear viscosity and the terminal relaxation time, and these were compared to theoretical values. The results indicate that the reversible supramolecular polymer is semiflexible, and that both breaking and reptation of chains contribute to the stress relaxation. The parameters from macroscopic rheometry were compared to microscopic values obtained from probe particle diffusion. The particles probe the macroscopic viscoelastic parameters if their size is large compared to the correlation length in the system and to the (persistence) length of the polymer chains.
    Achtergronddocument referenties en maatlatten voor macrofauna
    Knoben, R. ; Kamsma, P. ; Franken, R.J.M. ; Peeters, E.T.H.M. ; Verdonschot, P.F.M. ; Keizer-Vlek, H.E. - \ 2004
    [S.l.] : s.n. (Achtergronddocument macrofauna ) - 39
    zoetwaterecologie - waterdieren - meting - referentienormen - eu regelingen - richtlijnen (directives) - watersystemen - nederland - kaderrichtlijn water - macrofauna - freshwater ecology - aquatic animals - measurement - reference standards - eu regulations - directives - water systems - netherlands - water framework directive - macrofauna
    Voor de implementatie van de KRW Water (KRW) in Nederland is een regionale ambtelijke en bestuurlijke overlegstructuur in het leven geroepen en zijn verschillende productteams geformeerd. Een van de taken van de productnaam is het beschrijven van de referentietoestand van de verschillende typen waterlichamen. Deze beschrijving moet eind 2004 gereed zijn. De nationale interdepartementale werkgroep Doelstellingen Oppervlaktewater en de STOWA ondersteunen deze taak door een deel van het instrumentarium centraal te ontwikkelen, namelijk de ecologische beoordeling van oppervlaktewateren. Voor het uitwerken van de beoordeling van de biologische kwaliteitselementen zijn vier expertgroepen geformeerd: 1) fytoplankton, microfytobenthos en macrofyten 2) angiospermen en macroalgen 3) macrofauna 4) vissen Dit achtergronddocument gaat in op de beoordeling van macrofauna, die is gebaseerd op een beoordeling van de soortensamenstelling. De soortensamenstelling is opgesplitst in drie groepen van indicatoren (parameters) namelijk dominante, indicatieve/kenmerkende en zeldzame taxa. In dit rapport wordt ingegaan op de achterliggende keuzes, specificaties en onderbouwing van de parameters
    Technische rapportage van het project Bestrijdingsmiddelen in het oppervlaktewater en een verkenning koppeling van meetgegevens aan grondgebruik - MEBOL
    Tamis, W.L.M. ; Zelfde, M. van 't; Hoefsloot, J.M.P. ; Graaf, H.J. de; Snoo, G.R. de; Knoben, R.A.E. ; Merckelbach, R.C.M. ; Linden, A.M.A. van der - \ 2004
    Leiden : CML (CML notities 38)
    Referenties en concept-maatlatten voor rivieren voor de Kaderrichtlijn Water
    Beers, M. ; Berg, M.S. van den; Broek, T. van den; Buskens, R. ; Koops, R.C. ; Dam, H. van; Duursema, G. ; Fagel, M. ; Ietswaart, T. ; Klinge, M. ; Knoben, R.A.E. ; Kranenbarg, J. ; Leeuw, J.J. de; Molen, J.S. van der; Noordhuis, R. ; Nijboer, R.C. ; Pot, R. ; Verdonschot, P.F.M. ; Vlek, H.E. ; Vriese, T. - \ 2004
    Utrecht : Stowa (Rapport / STOWA 2004 43) - ISBN 9789057732768 - 365
    rivieren - indicatoren - oppervlaktewater - eu regelingen - ecologie - richtlijnen (directives) - waterkwaliteit - normen - aquatische ecosystemen - kaderrichtlijn water - rivers - indicators - surface water - eu regulations - ecology - directives - water quality - standards - aquatic ecosystems - water framework directive
    In december 2000 is de Europese Kaderrichtlijn Water (KRW) vastgesteld. Eén van de verplichtingen die voortvloeien uit de KRW is het beschrijven van de ecologische referentiesituatie van natuurlijke watertypen, waarvan dit rapport verslag doet voor de categorie Rivieren. Naast de referenties voor de biologische-, hydromorfologische- en algemene fysischchemische kwaliteitselementen per watertype, wordt in dit rapport een voorstel gedaan voor biologische maatlatten ten behoeve van de ecologische beoordeling van natuurlijke wateren. Daarbij is op ecologische gronden een onderscheid in klassen gemaakt, waaronder de Goede Ecologische Toestand
    Check title to add to marked list
    << previous | next >>

    Show 20 50 100 records per page

     
    Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.