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Remote sensing of biologically reworked sediments: a laboratory experiment
De Backer, A.; Adam, S.; Monbaliu, J.; Toorman, E.; Vincx, M.; Degraer, S. (2010). Remote sensing of biologically reworked sediments: a laboratory experiment, in: De Backer, A. The mud shrimp Corophium volutator: a key species in tidal flat sedimentary processes? = De slijkgarnaal Corophium volutator: een sleutelsoort in sedimentprocessen van slikken?. pp. 49-64
In: De Backer, A. (2010). The mud shrimp Corophium volutator: a key species in tidal flat sedimentary processes? = De slijkgarnaal Corophium volutator: een sleutelsoort in sedimentprocessen van slikken? PhD Thesis. Universiteit Gent: Ghent. ISBN 978-94-906952-0-0. 153 pp.
Related to:
De Backer, A.; Adam, S.; Monbaliu, J.; Toorman, E.; Vincx, M.; Degraer, S. (2009). Remote sensing of biologically reworked sediments: a laboratory experiment. Est. Coast. 32(6): 1121-1129. https://dx.doi.org/10.1007/s12237-009-9204-6, more
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    Vlaams Instituut voor de Zee: Open Marine Archive 157705 [ download pdf ]
Keywords
    Dimensions > Size > Grain size
    Measurement
    Remote sensing
    Water content
    Corophium volutator (Pallas, 1766) [WoRMS]; Corophium volutator (Pallas, 1766) [WoRMS]
    Marine/Coastal
Author keywords
    Clay content; Remote sensing; Grain size; Water content; Corophium volutator; Hyperspectral measurements
Project Top | Authors 
  • Remote sensing for characterization of intertidal sediments and microphytobenthic algae
Authors  Top 
  • De Backer, A.
  • Adam, S.
  • Monbaliu, J.
  • Toorman, E.
  • Vincx, M.
  • Degraer, S.
Abstract
    The present study aims to test the application of remote sensing to address the impact of bioturbation on physical sediment properties. Therefore, a laboratory experiment was developed, using microcosms mimicking a marine intertidal water–sediment interface to test the influence of Corophium volutator densities on sediment properties. Three main variables (water content, clay content, and mean grain size) were measured in three treatments (no Corophium, 5,000 Corophium per square meter, and 20,000 Corophium per square meter) after 16 days of bioturbation. Results obtained with conventional—destructive—techniques showed a significant increase of water content and a significant, but small decrease of clay content in the presence of Corophium. The remote sensing technique detected the impact of Corophium on water content as an increase in absorption at 1,450 nm, but was not able to detect the animal impact on clay content. This study demonstrates that remote sensing data could be significantly modified by bioturbation activities and that remote sensing can be applied in the laboratory to address the impact of bioturbation on sediment properties. This possibly opens new perspectives for longterm experiments concerning the role of bioturbation on sedimentary processes.
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