Suitability of phytoliths as a quantitative process tracer for soil erosion studies
- Author(s)
- Sabine Kraushaar, Matthias Konzett, Janika Kiep, Christian Siebert, Julia Meister
- Abstract
Phytoliths are plant microfossils commonly used as qualitative archive markers in archaeological and paleoecological studies. Their potential uniqueness to the vegetation cover, robustness to weathering, and lack of chemical alteration along the transport paths make them potentially suitable tracers for quantitative erosion studies. In this pilot study, we explore the potential of phytoliths in a sediment fingerprinting study in the Ceguera catchment (28 km2) in NE Spain. The phytolith concentrations and morphologies of four land cover classes (agricultural land, badland, forest, and shrubland) were analysed, and their contributions to four natural sediment mixture samples along the river course were modelled. Phytolith concentrations allowed us to discriminate sources sufficiently, albeit with limited sample size. The performance of the phytoliths as tracer was tested by reproducing the sources of artificial sediment mixture samples with satisfactory recall ratio. Results identified badlands to be the main contributor, with 84–96% of the sediment load to the sinks, followed by shrublands (median 5%) and agricultural lands (median 2%). These major findings can be reproduced by other conventional erosion studies from this area, indicating that phytoliths are suited to quantifying erosion patterns in mesoscale catchments.
- Organisation(s)
- Department of Geography and Regional Research
- External organisation(s)
- Freie Universität Berlin (FU), Helmholtz-Zentrum für Umweltforschung, Julius-Maximilians-Universität Würzburg
- Journal
- Earth Surface Processes and Landforms
- Volume
- 46
- Pages
- 1797-1808
- No. of pages
- 12
- ISSN
- 0197-9337
- DOI
- https://doi.org/10.1002/esp.5121
- Publication date
- 07-2021
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105404 Geomorphology
- Keywords
- ASJC Scopus subject areas
- Geography, Planning and Development, Earth-Surface Processes, Earth and Planetary Sciences (miscellaneous)
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/92f31bab-e782-4ef9-9417-b6edf6c3bbb9