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On the relation between age, plant composition and nutrient release from living and killed Ceratophyllum plantsHet microklimaat in submerse vegetatiesMacro-invertebrate communities associated with the macrophytes of Lake Vechten: structural and functional relationshipsThe phytosociological approach to the description and classification of aqautic macrophytic vegetationThe aquatic macrophytes of Lake Vechten. Species composition, spatial distribution and productionStudies on the decomposition of Phragmites australis under laboratory conditionsGrowth modelling in aquatic macrophytesStructuur en dynamiek in de oeverzone van de plas Vechten en de Grote Maarseveense PlasEcological indicators for the assessment of the quality of air, water, soil and ecosystemsEffects of water pollution on freshwater submerged macrophytesRespiration in relation to reserve substances in the submerged macrophyte Ceratophyllum demersum L.The submerged macrophytes in Lake Maarsseveen I: changes in species composition and biomass over a six year periodGrowth substances and dormancy in Ceratophyllum demersumThe submerged aquatic macrophytes in lake Maarsseveen I: species composition, spatial distributon and productivitySeasonal growth of the submerged macrophyte Ceratophyllum demersum L. in mesotrophic Lake Vechten in relation to insolation, temperature and reserve carbohydratesPhotosynthesis in Ceratophyllum demersum. Carbon fixation rates in relation to the plants physiological stage, and the contents of chlorophyll and non-structural carbohydrates (Abstract)Study of the seasonal change in composition in roots and shoots of Phragmites australis by pyrolysis mass spectrometry combined with multivariate analysisGrowth and production of Phragmites australis in Lake Vechten (The Netherlands)Effects of nitrogen on the growth and nitrogenous compounds of Ceratophyllum demersumEffects of paraquat on growth and photosynthesis of Ceratophyllum demersum and Elodea canadensisA seasonal study of growth characteristics and the levels of carbohydrates and proteins in Elodea nuttallii, Polygonum amphibium and Phragmites australisSeasonal changes in mineral and organic components of Ceratophyllum demersum and Elodea canadensisPrimary productivity in the submerged aquatic macrophyte Ceratophyllum demersumStudies on Decomposition of Ceratophyllum demersum Litter under Laboratory and Field Conditions - Losses of Dry Mass and Nutrients, Qualitative Changes in Organic-Compounds and Consequences for Ambient Water and SedimentsA preliminary model for growth of Ceratophyllum demersum L.Hormonal interactions in Ceratophyllum demersumPreliminary study of internal gas composition of Lemna gibba LPhotosynthetic characteristics of the submerged macrophyte Ceratophyllum demersumEcologische Indicatoren voor de Kwaliteitsbeoordeling van Lucht, Water, Bodem en Ecoststemen; Symposium van de Oecologische Kring, Utrecht, 14-15 oktober 1982The role of storage substances in growth of Ceratophyllum demersum L.Primary Production of Macrophytes - Terminology, Approaches and a Comparison of MethodsTowards an integrated study of the ecosystem of Lake VechtenSeasonal effects in hormonal control of growth in submerged aquatic macrophyte Ceratophyllum demersumEcological Indicators for the Assessment of the Quality of Air, Water, Soil and Ecosystems, Papers presented at at a Symposium held in Utrecht, Oct. 1982Nutrient content of the aquatic macrophytes Elodea canadensis and Ceratophyllum demersum in the course of yearResearch into the characteristics of C3 and C4 plants in Ceratophyllum demersum L.Spectral light attenuation in a hypertrophic lake system Loosdrecht Lakes (the Netherlands)An Assessment of the Importance of Emergent and Floating-Leaved Macrophytes to Trophic Status in the Loosdrecht Lakes (the Netherlands)Methods of exploration and analysis of the environment of aquatic vegetationThe reaction of Ceratophyllum demersum on exogenous phytohormones in course of year (Abstract)