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Rhizome architecture in Phragmites australis in relation to water depth: Implications for within-plant oxygen transport distances
Limnology, Department of Ecology, Lund University, Lund, Sweden.ORCID iD: 0000-0002-5181-0391
Limnology, Department of Ecology, Lund University, Lund, Sweden.
1996 (English)In: Folia Geobotanica, ISSN 1211-9520, E-ISSN 1874-9348, Vol. 31, no 1, 91-97 p.Article in journal (Refereed) Published
Abstract [en]

Phragmites australis (CAV.) TRlN. ex STEUD. is a perennial plant, largely relying on its rhizomes for resource storage, spreading and anchorage in the substrate. Vertical distribution and length of horizontal rhizomes of Phragmites australis were investigated at the reed bed edge in a lake in southern Sweden. In deep water, horizontal rhizomes were relatively short and superficially situated in the substrate. It is hypothesised that this is an adaptation to water depth by keeping O-2-transport distances through shoots and rhizomes as short as possible. In shallow water, P. australis rhizomes generally penetrated deeply into the substrate, probably improving anchorage and nutrient uptake possibilities. Further, horizontal rhizomes were longer in shallow water, which may increase the rate of vegetative spread. Because of these changes in rhizome architecture, "critical within-plant oxygen transport distances" did not change with water depth. This indicates that P. australis maximises the extension of its rhizomes in relation to spatial differences in water depth. This may limit the ability of P. australis to tolerate sudden temporal increases in water depth or eutrophication.

Place, publisher, year, edition, pages
Dordrecht: Springer Netherlands, 1996. Vol. 31, no 1, 91-97 p.
Keyword [en]
Clonal plants, Growth strategy, Littoral zone, Vegetative spreading, Wetland vegetation
National Category
Ecology
Identifiers
URN: urn:nbn:se:hh:diva-27663DOI: 10.1007/BF02803998Scopus ID: 2-s2.0-0002443974OAI: oai:DiVA.org:hh-27663DiVA: diva2:784964
Note

Conference paper from Symposium on Adaptation Strategies in Wetland Plants – Links Between Ecology and Physiology, Trebon, Czech Republic, September 7-10, 1994

Available from: 2015-02-01 Created: 2015-02-01 Last updated: 2017-06-02Bibliographically approved

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CiteExportLink to record
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