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The redox potential was highly variable with sediment depth indicating an oxidizing effect ofPhragmites roots and rhizomes.
High bacterial numbers and glucose uptake rates were associated with redoxclines.
Glucose mineralization was 8% of the total uptake in the upper part of...
The decomposition ofPhragmites leaves was studied under experimental conditions in vessels during 147 days. This process was compared in vessels filled with (a) lake water, (b) lake water and sediment, and (c) lake water, sediment and plant material.
Thein situ breakdown ofNymphoides peltata (Gmel.) O. Kuntze has been studied with special attention for methodology by: (1) using fresh and pre-dried material to establish the influence of pre-drying on breakdown and losses of nutrient stocks during decomposition; (2) enclosing different amounts...
In this paper the leaf-marking method as used for the study of the development and initial decomposition of floating leaves is described and the reliability of the various measurements is tested and/or discussed. Some general results obtained withNymphoides peltata (Gmel.) O. Kuntze in tanks and...
One of the methods to measure decomposition is to measure the rate of respiration by the ETS method. The relative value and the shortcomings of this method, but also the advantages of it as sensitivity, easiness and quickness are stressed. Some examples of application of the method in ocean...
The chemical composition of leaves and particulate decomposition residues of the water-lilyNuphar variegatum and the eelgrassZostera marina was studied by Curie-point pyrolysis mass spectrometry. The native water-lily and eelgrass were characterised by pyrolysis products of carbohydrates,...
In Lake Grevelingen decomposition of eelgrass was studied in the field with the litter bag method from July 1977 till February 1978. After 6 months only 6% refractory matter remained in the bags. Under aerobic conditions the decomposition of eelgrass is completed within one year. The organic...
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