Abstract
Two genetically different stands of Phragmites australis differing in their trophic status were investigated regarding seasonal changes in shoot morphology, stand structure, standing crop and N-, P-content in the above-ground and below-ground biomass. A model was developed describing internal and external nutrient cycles of two distinct ecotypes — translocation type and assimilation type. In adaptation to high nutrient availability in littoral sediments, the assimilation type is characterized by a higher productivity and standing stock (N, P), lower fertility, lower translocation rates (N, P), and higher N-, P-contents in the remaining standing dead culms, which leads to a more pronounced external nutrient cycle as compared to the translocation type situated at nutrient poor sites. Furthermore, the duration of heterotrophic and autotrophic growth phase, translocation and dormancy of buds differs between the both types.
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© 1999 Springer Science+Business Media Dordrecht
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Lippert, I., Rolletschek, H., Kühl, H., Kohl, JG. (1999). Internal and external nutrient cycles in stands of Phragmites australis — a model for two ecotypes. In: Walz, N., Nixdorf, B. (eds) Shallow Lakes ’98. Developments in Hydrobiology, vol 143. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2986-4_38
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DOI: https://doi.org/10.1007/978-94-017-2986-4_38
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