Skip to Main content Skip to Navigation
Journal articles

Quantification of sediment reworking by the Asiatic clam Corbicula fluminea Müller, 1774

Abstract : Active organisms modify the substratum in which they dwell. This process, called "bioturbation", affects the way that biogeochemical fluxes are mediated at the substratum-water interface. In the frame of this work, the bioturbation potential of the Asiatic clam Corbicula fluminea was characterized and quantified. We measured the displacement of fluorescent particles by C. fluminea burying in a size-based experimental design in order to explore the effects of body-size on sediment reworking. Our results stress that C. fluminea belongs to the functional group of biodiffusors, and that C. fluminea can be considered as an intermediate sediment reworker. We suggest that bioturbation was mainly induced by the pedal-feeding activity of the clams. Results also showed that, though large clams induced displacement of particles deeper into the sediment, small clams showed the highest net sediment reworking activity. This result was in contrast to the initial hypothesis of biovolume as the main driver for particle displacement by bioturbating organisms. Life-history traits and specific features of pedal-feeding could explain the observed pattern.
Document type :
Journal articles
Complete list of metadatas

Cited literature [53 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00987357
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Tuesday, May 6, 2014 - 8:08:19 AM
Last modification on : Thursday, October 15, 2020 - 3:14:12 AM
Long-term archiving on: : Wednesday, August 6, 2014 - 11:45:28 AM

File

Majdi_11529.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Nabil Majdi, Léa Bardon, Franck Gilbert. Quantification of sediment reworking by the Asiatic clam Corbicula fluminea Müller, 1774. Hydrobiologia, Springer, 2014, vol. 732, pp. 85-92. ⟨10.1007/s10750-014-1849-x⟩. ⟨hal-00987357⟩

Share

Metrics

Record views

918

Files downloads

1019