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Applications of Pollen Analysis in Estuarine Systems

Citation

Ellison, JC, Applications of Pollen Analysis in Estuarine Systems, Applications of Paleoenvironmental Techniques in Estuarine Studies, Springer, K Weckstrom, K Saunders, P Gell, G Skilbeck (ed), Netherlands, pp. 441-468. ISBN 978-94-024-0988-8 (2017) [Research Book Chapter]

Copyright Statement

Copyright 2017 Springer Science-Business Media B.V.

DOI: doi:10.1007/978-94-024-0990-1_18

Abstract

Pollen and spores have an outer covering that is resistant to decay in anaerobic estuarine sediment, and their morphological and textural features, such as shape, size, aperture type and ornamentation, enable microscopic identification. Pollen analysis compares assemblages of pollen and spores in stratigraphic cores relative to the modern environment to reconstruct vegetation assemblages of past environments. Stratigraphic cores from estuarine deposits provide time-depth sequences of sediment samples, and the laboratory procedure in pollen analysis involves concentration of the pollen and spores. Microscopic examination allows identification, although it is difficult or impossible to distinguish between some genera and species, and down-core assemblages can be interpreted by comparison with those found in surface sediment samples and local and regional community structures of vegetation. Both relative abundance, and absolute concentration, are used to interpret the palaeo environment. Records have shown vegetation changes to be controlled by relative sea level change, and estuarine evolution such as progradation, infill, shoreline retreat, and by human influences. Estuarine sediments with high mixing and inorganic sediment content generally yield poorer pollen analysis records relative to estuarine sediments with an undisturbed time/depth sequence of stratigraphy and with limited reworking. Lower energy zones in central areas of wave and tide dominated estuaries have proven to be most useful for palaeo-environmental reconstruction by pollen analysis.

Item Details

Item Type:Research Book Chapter
Keywords:pollen analysis, spores, palynology, geomorphic setting, Samoa
Research Division:Earth Sciences
Research Group:Physical Geography and Environmental Geoscience
Research Field:Palaeoclimatology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Coastal and Estuarine Flora, Fauna and Biodiversity
Author:Ellison, JC (Dr Joanna Ellison)
ID Code:114994
Year Published:2017
Deposited By:Geography and Spatial Science
Deposited On:2017-03-03
Last Modified:2017-04-04
Downloads:0

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