FN Archimer Export Format
PT J
TI Influence of Crepidula fornicata on suspended particle dynamics in coastal systems: a mesocosm experimental study
BT 
AF Grasso, Florent
   CARLIER, Antoine
   Cugier, Philippe
   Verney, Romaric
   Marzloff, Martin
AS 1:1;2:2;3:2;4:1;5:2;
FF 1:PDG-ODE-DYNECO-DHYSED;2:PDG-ODE-DYNECO-LEBCO;3:PDG-ODE-DYNECO-LEBCO;4:PDG-ODE-DYNECO-DHYSED;5:PDG-ODE-DYNECO-LEBCO;
C1 IFREMER – DYNECO/DHYSED, Centre de Bretagne, Plouzané, CS, France
   IFREMER – DYNECO/LEBCO, Centre de Bretagne, Plouzané, CS, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-DHYSED
   PDG-ODE-DYNECO-LEBCO
IN WOS Ifremer UPR
TC 2
UR https://archimer.ifremer.fr/doc/00662/77403/79043.pdf
LA English
DT Article
DE ;Laboratory experiments;coastal processes;physical-biological interactions;benthic engineer species;mud settling;flocculation;biofiltration;organic matter
AB In coastal environments, strong feedback can exist between benthic fauna and sediment dynamics. Benthic populations can modify sediment dynamics through biofiltration and bioturbation, while hydro- and sediment dynamics directly determine local environmental conditions for benthic organisms. However, these complex feedbacks are difficult to study in situ. Here, we carried out mesocosm experiments to characterize the effects of a benthic species (the gastropod Crepidula fornicata) on mud dynamics under hydrodynamic conditions representative of their natural habitat. Different experimental tests related to the inclusion (or not) of dead or live crepidula reveal that biofiltration can increase particle settling up to 40%. Flocculation, which is strengthened by organic matter enrichment in shell beds, also substantially increases particle settling. Thus, both processes enhance sedimentation above live crepidula habitats. Furthermore, these experiments highlight serious technical, physical and biological challenges that have to be tackled for properly investigating bio-physical interactions. 
PY 2023
PD JAN
SO Journal Of Ecohydraulics
SN 2470-5357
PU Informa UK Limited
VL 8
IS 1
UT 001097658500003
BP 26
EP 37
DI 10.1080/24705357.2020.1834884
ID 77403
ER

EF