Szukana fraza: [Abstract = "A water migration marker of the element K_x in the water solution was deduced from the ratio between the element content of dry water to its content of the eroding filter bed. A comparison was made between nitrogen and phosphorus absorption in the nitrophyte and macrophyte plants representing Phragmites communis Cov. and Glyceria maxima which revealed similarities in the absorption of biogenic elements in the vegetative parts of these plants."]