Publication
Title
Testate amoebae as estuarine water-level indicators : modern distribution and the development of a transfer function from a freshwater tidal marsh (Scheldt estuary, Belgium)
Author
Abstract
Little is known about the century-scale response of water levels in inland estuaries to sea-level change and human modifications to estuarine morphology. This study explored the ability of using testate amoebae (Protozoa, Rhizopoda) from sediments of a freshwater tidal marsh as indicators of water level in an inland estuary. The hypothesis was that modern testate amoeba assemblages change with surface elevation (approximately the duration of tidal flooding) within a freshwater tidal marsh. Variation in testate amoeba assemblages in relation to multiple environmental variables and sediment characteristics was studied through redundancy analysis. This demonstrated that a significant part of the variation in modern testate amoeba assemblages could be explained by flooding frequency, surface elevation, organic content and particle size of the soil. Transfer functions, partial least squares and weighted average regressions were made to show that testate amoebae can be used for reconstruction of water level (with an accuracy of 0.05 Normalized Elevation). A preliminary test of application of the transfer function to palaeo testate amoeba assemblages showed promising results. Testate amoebae from a freshwater tidal marsh provide a potentially powerful new tool for estuarine water-level reconstructions.
Language
English
Source (journal)
Journal of quaternary science. - Harlow
Publication
Harlow : 2011
ISSN
0267-8179
Volume/pages
26:8(2011), p. 819-828
ISI
000297752600006
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 15.09.2011
Last edited 17.07.2017
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