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    Climate change and bathing water quality [Boek]Europese richtlijn voor zwemwater, 2006/7/EG
    Roijackers, R.M.M. \ Lürling, F.L.L.W. \ 2007
    In the new European bathing water directive, 2006/7/EG, two microbiological indicators, i.e. intestinal enterococci and Escherichia coli, are used to assess the state of the official outdoor bathing waters. In this directive also cyanobacteria are in ...
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    Inventarisatie ten behoeve van de haalbaarheidsafweging van de specifiek-ecologische doelstelling binnendijkse Biesbosch-kreken [Boek]
    Waajen, G.W.A.M. \ Roijackers, R.M.M. \ 1988
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    Hydrobiologisch onderzoek in Nederland : fundamentele en toepassingsgerichte aspekten [Boek]
    Roijackers, R.M.M. \ 1988
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    Baggerrapport in het kader van het proefproject Ankeveense en Kortenhoefse plassen : het baggeren overwogen [Boek]
    Visser, C.M. \ Verstraelen, P.J.T. \ Roijackers, R.M.M. \ 1989
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    Effecten van directe vuilemissies uit het gemengde rioolstelsel van Loenen op de waterkwaliteit van de ontvangende bergingsvijver - Deelrapport 4: Deelonderzoek VI: Hydrobiologische effecten [Boek]
    Aalderink, R.H. \ Lijklema, L. \ Willemsen, G.D. \ Roijackers, R.M.M. \ 1986
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    Phytoplankton studies in a nymphaeid - dominated system : with special reference to the effects of the presence of nymphaeids on the functioning and structure of the phytoplankton communities [Proefschrift]
    Roijackers, R.M.M. \ 1985
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    Eutrophication research, state of the art : inputs, processes, effects, modelling, management : specialist symposium dedicated to Lambertus Lijklema, held in Wageningen, The Netherlands, 28-29 August 1997 [Congresverslag]
    Roijackers, R. \ Aalderink, R.H. \ 1998
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    Integraal waterbeheer in het Goois - Utrechts stuwwallen- en plassengebied [Boek]
    Liere, L. van \ Roijackers, R.M.M. \ Verstraelen, P.J.T. \ 1989
    De laatste jaren heeft er een verandering plaatsgevonden in het denken over waterbeheer. Meer en meer heeft de gedachte veld gewonnen, dat water integraal moet worden beheerd. Een belangrijke bijdrage daartoe vormde de nota 'Omgaan met water' (1985). ...
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    Lake restoration: successes, failures and long-term effects \ The journal of applied ecology / British Ecological Society [Artikel]
    Søndergaard, M. \ Jeppesen, E. \ Lauridsen, T.L. \ Skov, C. \ Nes, E.H. van \ Roijackers, R. \ Lammens, E. \ Portielje, R. \ 2007
    1. Eutrophication constitutes a serious threat to many European lakes and many approaches have been used during the past 20–30 years to improve lake water quality. Results from the various lake restoration initiatives are diverse and the long-term ef ...
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    A simple method for analysing the effects of algae on the growth of Lemna and preventing algal growth in duckweed bioassays \ Archiv für Hydrobiologie [Artikel]
    Szabo, S. \ Roijackers, R.M.M. \ Scheffer, M. \ 2003
    A simple novel method for indoor culture experiments with small floating water plants, such as Lemnaceae, is described
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    Experimental analysis of the competition between algae and duckweed \ Archiv für Hydrobiologie [Artikel]
    Roijackers, R.M.M. \ Szabó, S. \ Scheffer, M. \ 2004
    We performed indoor competition experiments between algae and Lemna gibba L. in order to unravel mechanisms of competition. To separate effects of shading and physical interference from nutrient competition we grew the two groups physically separated ...
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    Macrophyte succession in floodplain lakes : spatio-temporal patterns in relation to river hydrology, lake morphology and management [Proefschrift]
    Geest, G.J. van \ 2005
    Two questions are central to the work in this thesis: 1. What are the factors determining macrophyte composition in floodplain lakes along the Lower Rhine? 2. What advice can be given for design of future water bodies?
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    Succession of aquatic vegetation driven by reduced water-level fluctuations in floodplain lakes \ The journal of applied ecology / British Ecological Society [Artikel]
    Geest, G.J. van \ Coops, H. \ Roijackers, R.M.M. \ 2005
    In recent years, interest has grown in restoring floodplain function of regulated rivers. Successful rehabilitation of riparian systems requires knowledge of how regulation of river flow affects biodiversity and ecosystem function. The effects of cha ...
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    Transparency of floodplain lakes : a study of plankton and suspended matter along the lower Rhine [Proefschrift]
    Roozen, F.C.J.M. \ 2005
    After the serious floods in 1993 and 1995 RIZA started a research project to increase the understanding of the ecological functioning of floodplain lakes along the rivers. This thesis deals with plankton, chemistry and turbidity of temporarily isolat ...
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    The strength of limiting factors for duckweed during algal competition \ Archiv für Hydrobiologie [Artikel]
    Szabó, S. \ Roijackers, R. \ Scheffer, M. \ 2005
    Duckweed (Lemna gibba) growth was found to be strongly reduced by unicellular green algae (Scenedesmus conspicua, Chlorella sp., Chlamydomonas sp.) in indoor experiments. These algae reduced N, P, Fe and Mn concentrations of the medium drastically, m ...
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    Herstelmaatregelen in ondiepe meren: zijn de verbeteringen blijvend? \ H twee O : tijdschrift voor watervoorziening en afvalwaterbehandeling [Artikel]
    Nes, E. van \ Lammens, E. \ Roijackers, R. \ Veeningen, R. \ 2007
    In deze studie evalueren we gegevens van 28 Nederlandse en 50 Deense meren waar effectgericht maatregelen zijn toegepast, waaronder voornamelijk actief biologisch beheer door afvissen van brasem en blankvoorn. Daarnaast zijn in sommige meren ook ande ...
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    Perspectives for the use of diatom assemblages in the water management policy of Overijssel (The Netherlands) \ Hydrobiologia [Artikel]
    Cate, J.H. ten \ Maasdam, R. \ Roijackers, R.M.M. \ 1993
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    Biological assessment of effects of combined sewer overflows and storm water discharges \ Urban discharges and receiving water quality impacts [Hoofdstuk uit boek]
    Lijklema, L. \ Roijackers, R.M.M. \ Cuppen, J.G.M. \ 1989
    The biological effects of discharges from combined or separated sewer systems are difficult to assess or to predict due to variahilities in concentrations, environmental conditions, morphometry, susceptibility of organisms, seasonality and other fact ...
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    Urban storm water discharges : effects upon plankton communities \ Water science and technology : a journal of the International Association on Water Pollution Research [Artikel]
    Gast, H.F. \ Suykerbuyk, R.E.M. \ Roijackers, R.M.M. \ 1990
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    Geohydrologie van de Goois / Utrechtse stuwwal en het Vechtplassengebied \ Integraal waterbeheer in het Goois-Utrechts stuwwallen- en plassengebied [Hoofdstuk uit boek]
    Verstraelen, P.J.T. \ Roijackers, R.M.M. \ Liere, L. van \ 1989
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