Sandification vs. muddification of tidal flats by benthic organisms: A flume study

Laura M. Soissons*, Tatiana Gomes da Conceiçâo, John Bastiaan, Jeroen van Dalen, Tom Ysebaert, Peter M.J. Herman, Francesco Cozzoli, Tjeerd J. Bouma

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Bioturbating benthic organisms have typically been characterised by how they modify the vertical sediment erosion thresholds. By means of several annular flume experiments, we aimed to understand how benthic organisms may affect grain-size sediment properties over time, and how this depends on the sediment type and the sediment loading of the water column. We compared the effect of two bioturbating macroinvertebrate species: a local dominant species, the cockle Cerastoderma edule and a spreading non-indigeneous species, the clam Ruditapes philippinarum. Our results indicate that the effect of benthic organisms on sediment dynamics is strongly dependent on both the prevailing environmental conditions and the benthic species present. If sediment is sandy, the benthos can gradually enhance the silt content of the sediment by mixing in part of the daily tidal sediment deposition. In contrast, if sediment is muddy, benthos can gradually decrease the silt content of the sediment by specifically suspending the fine fraction. Moreover, we observed that the native cockles had a stronger impact than invasive clams. Therefore, bioturbating benthos can have an important effect in determining the local sediment properties, with the outcome depending both on the species in question and the environmental conditions the bioturbator lives in. Our findings show that sediment bioturbation may have strong implications for tidal flat stability undergoing major changes from natural or anthropogenic sources.

Original languageEnglish
Article number106355
JournalEstuarine, Coastal and Shelf Science
Volume228
DOIs
Publication statusPublished - 15 Nov 2019

Fingerprint

tidal flat
benthic organisms
sediments
sediment
benthos
sediment property
clams
silt
environmental conditions
organism
Ruditapes philippinarum
Cerastoderma edule
flume experiment
sediment deposition
environmental factors
bioturbation
anthropogenic source
pollution load
macroinvertebrates
macroinvertebrate

Keywords

  • Benthic organisms
  • Cerastorderma edule
  • Ruditapes philippinarum
  • Sediment properties
  • Silt content
  • Suspended sediment concentration
  • Tidal flats

Cite this

Soissons, L. M., Gomes da Conceiçâo, T., Bastiaan, J., van Dalen, J., Ysebaert, T., Herman, P. M. J., ... Bouma, T. J. (2019). Sandification vs. muddification of tidal flats by benthic organisms: A flume study. Estuarine, Coastal and Shelf Science, 228, [106355]. https://doi.org/10.1016/j.ecss.2019.106355
Soissons, Laura M. ; Gomes da Conceiçâo, Tatiana ; Bastiaan, John ; van Dalen, Jeroen ; Ysebaert, Tom ; Herman, Peter M.J. ; Cozzoli, Francesco ; Bouma, Tjeerd J. / Sandification vs. muddification of tidal flats by benthic organisms: A flume study. In: Estuarine, Coastal and Shelf Science. 2019 ; Vol. 228.
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abstract = "Bioturbating benthic organisms have typically been characterised by how they modify the vertical sediment erosion thresholds. By means of several annular flume experiments, we aimed to understand how benthic organisms may affect grain-size sediment properties over time, and how this depends on the sediment type and the sediment loading of the water column. We compared the effect of two bioturbating macroinvertebrate species: a local dominant species, the cockle Cerastoderma edule and a spreading non-indigeneous species, the clam Ruditapes philippinarum. Our results indicate that the effect of benthic organisms on sediment dynamics is strongly dependent on both the prevailing environmental conditions and the benthic species present. If sediment is sandy, the benthos can gradually enhance the silt content of the sediment by mixing in part of the daily tidal sediment deposition. In contrast, if sediment is muddy, benthos can gradually decrease the silt content of the sediment by specifically suspending the fine fraction. Moreover, we observed that the native cockles had a stronger impact than invasive clams. Therefore, bioturbating benthos can have an important effect in determining the local sediment properties, with the outcome depending both on the species in question and the environmental conditions the bioturbator lives in. Our findings show that sediment bioturbation may have strong implications for tidal flat stability undergoing major changes from natural or anthropogenic sources.",
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Soissons, LM, Gomes da Conceiçâo, T, Bastiaan, J, van Dalen, J, Ysebaert, T, Herman, PMJ, Cozzoli, F & Bouma, TJ 2019, 'Sandification vs. muddification of tidal flats by benthic organisms: A flume study', Estuarine, Coastal and Shelf Science, vol. 228, 106355. https://doi.org/10.1016/j.ecss.2019.106355

Sandification vs. muddification of tidal flats by benthic organisms: A flume study. / Soissons, Laura M.; Gomes da Conceiçâo, Tatiana; Bastiaan, John; van Dalen, Jeroen; Ysebaert, Tom; Herman, Peter M.J.; Cozzoli, Francesco; Bouma, Tjeerd J.

In: Estuarine, Coastal and Shelf Science, Vol. 228, 106355, 15.11.2019.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Sandification vs. muddification of tidal flats by benthic organisms: A flume study

AU - Soissons, Laura M.

AU - Gomes da Conceiçâo, Tatiana

AU - Bastiaan, John

AU - van Dalen, Jeroen

AU - Ysebaert, Tom

AU - Herman, Peter M.J.

AU - Cozzoli, Francesco

AU - Bouma, Tjeerd J.

PY - 2019/11/15

Y1 - 2019/11/15

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AB - Bioturbating benthic organisms have typically been characterised by how they modify the vertical sediment erosion thresholds. By means of several annular flume experiments, we aimed to understand how benthic organisms may affect grain-size sediment properties over time, and how this depends on the sediment type and the sediment loading of the water column. We compared the effect of two bioturbating macroinvertebrate species: a local dominant species, the cockle Cerastoderma edule and a spreading non-indigeneous species, the clam Ruditapes philippinarum. Our results indicate that the effect of benthic organisms on sediment dynamics is strongly dependent on both the prevailing environmental conditions and the benthic species present. If sediment is sandy, the benthos can gradually enhance the silt content of the sediment by mixing in part of the daily tidal sediment deposition. In contrast, if sediment is muddy, benthos can gradually decrease the silt content of the sediment by specifically suspending the fine fraction. Moreover, we observed that the native cockles had a stronger impact than invasive clams. Therefore, bioturbating benthos can have an important effect in determining the local sediment properties, with the outcome depending both on the species in question and the environmental conditions the bioturbator lives in. Our findings show that sediment bioturbation may have strong implications for tidal flat stability undergoing major changes from natural or anthropogenic sources.

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KW - Cerastorderma edule

KW - Ruditapes philippinarum

KW - Sediment properties

KW - Silt content

KW - Suspended sediment concentration

KW - Tidal flats

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DO - 10.1016/j.ecss.2019.106355

M3 - Article

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JO - Estuarine Coastal and Shelf Science

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ER -