Formation and erosion of biogeomorphological structures: A model study on the tube-building polychaete Lanice conchilega

Bastiaan Wijnand Borsje, T.J. Bouma, M. Rabaut, P.M.J. Herman, Suzanne J.M.H. Hulscher

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

We study how organism traits and population densities of ecosystem engineering species, in combination with environmental factors, affect the formation and erosion rates of biogeomorphological structures, and focus on the widely distributed marine tube-building polychaete Lanice conchilega, which lives in patches that form mounds up to 80 cm high in soft-bottom sediments. We modeled the tube-building worms as thin solid piles that affect drag and turbulence, and thereby the local sediment dynamics and thus mound dynamics. Hydrodynamic model predictions showed good agreement with flume experiments for flow-velocity adaptations both within and in front of a patch of tube-building worms. The modeled equilibrium mound height increased with the organism trait “tube length,” and with population density, but was only little affected by the strength of the tidal current, water depth, and grain size. In all cases, the modeled mound heights were within the range of the mound heights observed in the field. The effect of the tube-building worm L. conchilega reached beyond the spatial scale of their biogenic structures, and persisted longer than the lifetime of the engineering organism itself
Original languageEnglish
Pages (from-to)1297-1309
JournalLimnology and oceanography
Volume59
Issue number4
DOIs
Publication statusPublished - 2014

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polychaete
Polychaeta
erosion
population density
ecosystem engineering
biogenic structure
flume experiment
organisms
tidal current
erosion rate
flow velocity
sediments
sediment
drag
water depth
pile
environmental factor
grain size
turbulence
hydrodynamics

Keywords

  • METIS-305063
  • IR-91795

Cite this

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title = "Formation and erosion of biogeomorphological structures: A model study on the tube-building polychaete Lanice conchilega",
abstract = "We study how organism traits and population densities of ecosystem engineering species, in combination with environmental factors, affect the formation and erosion rates of biogeomorphological structures, and focus on the widely distributed marine tube-building polychaete Lanice conchilega, which lives in patches that form mounds up to 80 cm high in soft-bottom sediments. We modeled the tube-building worms as thin solid piles that affect drag and turbulence, and thereby the local sediment dynamics and thus mound dynamics. Hydrodynamic model predictions showed good agreement with flume experiments for flow-velocity adaptations both within and in front of a patch of tube-building worms. The modeled equilibrium mound height increased with the organism trait “tube length,” and with population density, but was only little affected by the strength of the tidal current, water depth, and grain size. In all cases, the modeled mound heights were within the range of the mound heights observed in the field. The effect of the tube-building worm L. conchilega reached beyond the spatial scale of their biogenic structures, and persisted longer than the lifetime of the engineering organism itself",
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Formation and erosion of biogeomorphological structures: A model study on the tube-building polychaete Lanice conchilega. / Borsje, Bastiaan Wijnand; Bouma, T.J.; Rabaut, M.; Herman, P.M.J.; Hulscher, Suzanne J.M.H.

In: Limnology and oceanography, Vol. 59, No. 4, 2014, p. 1297-1309.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Formation and erosion of biogeomorphological structures: A model study on the tube-building polychaete Lanice conchilega

AU - Borsje, Bastiaan Wijnand

AU - Bouma, T.J.

AU - Rabaut, M.

AU - Herman, P.M.J.

AU - Hulscher, Suzanne J.M.H.

PY - 2014

Y1 - 2014

N2 - We study how organism traits and population densities of ecosystem engineering species, in combination with environmental factors, affect the formation and erosion rates of biogeomorphological structures, and focus on the widely distributed marine tube-building polychaete Lanice conchilega, which lives in patches that form mounds up to 80 cm high in soft-bottom sediments. We modeled the tube-building worms as thin solid piles that affect drag and turbulence, and thereby the local sediment dynamics and thus mound dynamics. Hydrodynamic model predictions showed good agreement with flume experiments for flow-velocity adaptations both within and in front of a patch of tube-building worms. The modeled equilibrium mound height increased with the organism trait “tube length,” and with population density, but was only little affected by the strength of the tidal current, water depth, and grain size. In all cases, the modeled mound heights were within the range of the mound heights observed in the field. The effect of the tube-building worm L. conchilega reached beyond the spatial scale of their biogenic structures, and persisted longer than the lifetime of the engineering organism itself

AB - We study how organism traits and population densities of ecosystem engineering species, in combination with environmental factors, affect the formation and erosion rates of biogeomorphological structures, and focus on the widely distributed marine tube-building polychaete Lanice conchilega, which lives in patches that form mounds up to 80 cm high in soft-bottom sediments. We modeled the tube-building worms as thin solid piles that affect drag and turbulence, and thereby the local sediment dynamics and thus mound dynamics. Hydrodynamic model predictions showed good agreement with flume experiments for flow-velocity adaptations both within and in front of a patch of tube-building worms. The modeled equilibrium mound height increased with the organism trait “tube length,” and with population density, but was only little affected by the strength of the tidal current, water depth, and grain size. In all cases, the modeled mound heights were within the range of the mound heights observed in the field. The effect of the tube-building worm L. conchilega reached beyond the spatial scale of their biogenic structures, and persisted longer than the lifetime of the engineering organism itself

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DO - 10.4319/lo.2014.59.4.1297

M3 - Article

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JO - Limnology and oceanography

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SN - 0024-3590

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