A process-basedmodelforerosionof Macoma balthica-affectedmudbeds

B.C. van Prooijen; F. Montserrat; P.M.J. Herman

doi:10.1016/j.csr.2010.12.008

A process-basedmodelforerosionof Macoma balthica-affectedmudbeds

B.C. van Prooijen, F. Montserrat, P.M.J. Herman

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Abstract

Modelingtheeffectofbiotaonsedimentdynamicsisadifficulttask.Inthispaperwere-analyze experimentalresultsof Willows etal.(1998) on theeffectsof Macoma balthica on sedimenterosion. A process-basedframeworkisproposed,fullycompatiblewithaphysicaldescriptionoferosionprocesses in caseofnobiogenicinfluences.Thebedisrepresentedbyaflufflayerontopofasubstrate.Acharacteristic featureoftheframeworkisthatthesedimentisrepresentedbyaprobabilitydensitydistributionforthe criticalshearstress,allowingforTypeIandTypeIIerosion. M. balthica increasesthesedimentmassinthe fluff layer.Thisincreaseisdeterminedbyconsideringtheactionradius,theoverlapoffeedingareas,and the feedingrateperanimal.Thecalibratedactionradiusandfeedingratewereintherangeasfoundinthe literature.Thedistributionofsedimentovertheerodibilityclassesandtheerosionrateparameterare hardly influencedatall.Duetooverlappingfeedingareas,theeffectisnon-linearwithdensityofthe animals.Themodelresultsareincloseagreementwiththemeasuredresults,suggestingthatnofurther formulationsofbiologicaleffectsareneededtosimulatetheexperimentsof Willows etal.(1998). In nature,othereffectslikedisruptingthebiofilmbygrazingcanbeofimportanceandshouldbeincludedin a laterstage.Thisstudyemphasizesthecrucialroleofsedimentavailabilityandtheeffectofbiotaonit. This aspectneedsmoreattentioninfutureexperiments.Theproposedmodelturnedouttoworkwellfor the effectsof M. balthica and offersopportunitiestoincludeotherbiogeniceffectsinaprocess-basedway as well.

Original language	English
Pages (from-to)	527-538
Journal	Continental Shelf Research
Volume	31
Issue number	6
DOIs	https://doi.org/10.1016/j.csr.2010.12.008
Publication status	Published - 2011

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@article{cdc86dbdda264f9da21393af11d2e8a7,

title = "A process-basedmodelforerosionof Macoma balthica-affectedmudbeds",

abstract = "Modelingtheeffectofbiotaonsedimentdynamicsisadifficulttask.Inthispaperwere-analyze experimentalresultsof Willows etal.(1998) on theeffectsof Macoma balthica on sedimenterosion. A process-basedframeworkisproposed,fullycompatiblewithaphysicaldescriptionoferosionprocesses in caseofnobiogenicinfluences.Thebedisrepresentedbyaflufflayerontopofasubstrate.Acharacteristic featureoftheframeworkisthatthesedimentisrepresentedbyaprobabilitydensitydistributionforthe criticalshearstress,allowingforTypeIandTypeIIerosion. M. balthica increasesthesedimentmassinthe fluff layer.Thisincreaseisdeterminedbyconsideringtheactionradius,theoverlapoffeedingareas,and the feedingrateperanimal.Thecalibratedactionradiusandfeedingratewereintherangeasfoundinthe literature.Thedistributionofsedimentovertheerodibilityclassesandtheerosionrateparameterare hardly influencedatall.Duetooverlappingfeedingareas,theeffectisnon-linearwithdensityofthe animals.Themodelresultsareincloseagreementwiththemeasuredresults,suggestingthatnofurther formulationsofbiologicaleffectsareneededtosimulatetheexperimentsof Willows etal.(1998). In nature,othereffectslikedisruptingthebiofilmbygrazingcanbeofimportanceandshouldbeincludedin a laterstage.Thisstudyemphasizesthecrucialroleofsedimentavailabilityandtheeffectofbiotaonit. This aspectneedsmoreattentioninfutureexperiments.Theproposedmodelturnedouttoworkwellfor the effectsof M. balthica and offersopportunitiestoincludeotherbiogeniceffectsinaprocess-basedway as well.",

author = "{van Prooijen}, B.C. and F. Montserrat and P.M.J. Herman",

note = "Reporting year: 2011 Metis note: 5052; CEME; RE",

year = "2011",

doi = "10.1016/j.csr.2010.12.008",

language = "English",

volume = "31",

pages = "527--538",

journal = "Continental Shelf Research",

issn = "0278-4343",

publisher = "Elsevier B.V.",

number = "6",

}

TY - JOUR

T1 - A process-basedmodelforerosionof Macoma balthica-affectedmudbeds

AU - van Prooijen, B.C.

AU - Montserrat, F.

AU - Herman, P.M.J.

N1 - Reporting year: 2011 Metis note: 5052; CEME; RE

PY - 2011

Y1 - 2011

N2 - Modelingtheeffectofbiotaonsedimentdynamicsisadifficulttask.Inthispaperwere-analyze experimentalresultsof Willows etal.(1998) on theeffectsof Macoma balthica on sedimenterosion. A process-basedframeworkisproposed,fullycompatiblewithaphysicaldescriptionoferosionprocesses in caseofnobiogenicinfluences.Thebedisrepresentedbyaflufflayerontopofasubstrate.Acharacteristic featureoftheframeworkisthatthesedimentisrepresentedbyaprobabilitydensitydistributionforthe criticalshearstress,allowingforTypeIandTypeIIerosion. M. balthica increasesthesedimentmassinthe fluff layer.Thisincreaseisdeterminedbyconsideringtheactionradius,theoverlapoffeedingareas,and the feedingrateperanimal.Thecalibratedactionradiusandfeedingratewereintherangeasfoundinthe literature.Thedistributionofsedimentovertheerodibilityclassesandtheerosionrateparameterare hardly influencedatall.Duetooverlappingfeedingareas,theeffectisnon-linearwithdensityofthe animals.Themodelresultsareincloseagreementwiththemeasuredresults,suggestingthatnofurther formulationsofbiologicaleffectsareneededtosimulatetheexperimentsof Willows etal.(1998). In nature,othereffectslikedisruptingthebiofilmbygrazingcanbeofimportanceandshouldbeincludedin a laterstage.Thisstudyemphasizesthecrucialroleofsedimentavailabilityandtheeffectofbiotaonit. This aspectneedsmoreattentioninfutureexperiments.Theproposedmodelturnedouttoworkwellfor the effectsof M. balthica and offersopportunitiestoincludeotherbiogeniceffectsinaprocess-basedway as well.

AB - Modelingtheeffectofbiotaonsedimentdynamicsisadifficulttask.Inthispaperwere-analyze experimentalresultsof Willows etal.(1998) on theeffectsof Macoma balthica on sedimenterosion. A process-basedframeworkisproposed,fullycompatiblewithaphysicaldescriptionoferosionprocesses in caseofnobiogenicinfluences.Thebedisrepresentedbyaflufflayerontopofasubstrate.Acharacteristic featureoftheframeworkisthatthesedimentisrepresentedbyaprobabilitydensitydistributionforthe criticalshearstress,allowingforTypeIandTypeIIerosion. M. balthica increasesthesedimentmassinthe fluff layer.Thisincreaseisdeterminedbyconsideringtheactionradius,theoverlapoffeedingareas,and the feedingrateperanimal.Thecalibratedactionradiusandfeedingratewereintherangeasfoundinthe literature.Thedistributionofsedimentovertheerodibilityclassesandtheerosionrateparameterare hardly influencedatall.Duetooverlappingfeedingareas,theeffectisnon-linearwithdensityofthe animals.Themodelresultsareincloseagreementwiththemeasuredresults,suggestingthatnofurther formulationsofbiologicaleffectsareneededtosimulatetheexperimentsof Willows etal.(1998). In nature,othereffectslikedisruptingthebiofilmbygrazingcanbeofimportanceandshouldbeincludedin a laterstage.Thisstudyemphasizesthecrucialroleofsedimentavailabilityandtheeffectofbiotaonit. This aspectneedsmoreattentioninfutureexperiments.Theproposedmodelturnedouttoworkwellfor the effectsof M. balthica and offersopportunitiestoincludeotherbiogeniceffectsinaprocess-basedway as well.

U2 - 10.1016/j.csr.2010.12.008

DO - 10.1016/j.csr.2010.12.008

M3 - Article

VL - 31

SP - 527

EP - 538

JO - Continental Shelf Research

JF - Continental Shelf Research

SN - 0278-4343

IS - 6

ER -