Distribution of Phosphorus and Nitrogen in Phragmites australis Aboveground Biomass
The objective of this study was to evaluate nitrogen and phosphorus compartmentalization in the aboveground biomass of Phragmites australis and its seasonality. The study was carried out at four sites in the littoral zones of two fishponds near Prague, Czech Republic. The aboveground biomass was harvested in early July and late August and the biomass was divided into thirds and stems and leaves. Besides dry weight of the biomass, concentrations of nitrogen and phosphorus were determined. The results revealed that the proportion of biomass formed by stems increases during the season. The concentrations of both nitrogen and phosphorus were higher in July and higher in leaves. Phosphorus standing stock is higher in stems then leaves while nitrogen standing stock is higher in leaves then in stems. The highest N and P standing stocks were found in upper leaves both in July and August.
KeywordsStanding stock Nitrogen Phosphorus Phragmites australis
The study was supported by grant No. LH13004 Effect of Flooding on Sequestration of Carbon and Nutrients in Wetland Soils from the Ministry of Education, Youth and Sport of the Czech Republic.
- Dykyjová, D. (1973). Content of mineral macronutrients in emergent macrophytes during their seasonal growth and decomposition. In S. Hejný (Ed.), Ecosystem study on wetland biome in Czechoslovakia (pp. 163–172). Třeboň: Czechoslovak IBP/PT-PP Report No. 3.Google Scholar
- Richardson, C.J., & Vymazal, J. (2001). Sampling macrophytes in wetlands. In R.B. Rader, D.P. Batzer, & S. Wissinger (Eds.), Bioassessment and management of North American freshwater wetlands (pp. 297–337). New York: Wiley.Google Scholar
- Vymazal, J. (2005). Removal of nitrogen via harvesting of emergent vegetation in constructed wetlands for wastewater treatment. In J. Vymazal (Ed.), Natural and constructed wetlands: Nutrients, metals and management (pp. 209–221). Leiden: Backhuys Publishers.Google Scholar