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Profiling, the below ground biomass of an emergent macrophyte using an adapted ingrowth core method
School of Geography, Queen Mary, University of London.
2013 (English)In: Aquatic Botany, ISSN 0304-3770, E-ISSN 1879-1522, Vol. 110, 97-102 p.Article in journal (Refereed) Published
Abstract [en]

In the context of our work exploring the role of Sparganium erectum as a physical ecosystem engineer, we aimed to test our hypothesis that the root and rhizome biomass of this species would be largely confined to the uppermost sediment layers, thereby having the effect of reinforcing newly deposited material and facilitating the growth of in-channel macrophyte stands and sediment accumulations. Detailed measurements of the below ground structures of linear emergent macrophytes, in terms of their biomass and architecture, are complicated by difficulties associated with sampling in the highly saturated sediments that these morphotypes typically occupy. In this paper, we describe the development of an adapted ingrowth core method, which allows the extrusion of an undisturbed root-soil matrix from highly saturated environments. The approach combines an ingrowth core, which is commonly used to measure fine-root production in forest topsoil, with an outer casing that facilitates the retention of a sample rep.. resentative of field conditions, and a laboratory protocol that enables extrusion and measurement of biomass at different depth increments. The new approach enabled detailed depth profiling of S. erectum, and confirmed our hypothesis by demonstrating that root and rhizome biomass was predominantly located in the 10 cm of sediment closest to the sediment-water interface throughout our study. 

Place, publisher, year, edition, pages
2013. Vol. 110, 97-102 p.
Keyword [en]
Below ground biomass, Roots, Rhizomes Sediment depth, Sparganium erectum, Ecosystem engineering
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-209844DOI: 10.1016/j.aquabot.2013.05.008ISI: 000325122500014OAI: oai:DiVA.org:uu-209844DiVA: diva2:659930
Available from: 2013-10-28 Created: 2013-10-28 Last updated: 2017-12-06Bibliographically approved

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Liffen, Tom

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