Spatio-temporal variations in intertidal mudflat erodability: Marennes-Oléron Bay, western France
A portable erosion device (ERIS) was deployed in November 2000 and May 2001 to investigate the spatio-temporal variation of fine-grained sediment erosion over a transect on the intertidal mudflats of Marennes-Oléron Bay, western France. The objective was to relate changes in bed erodability over diu...
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| Veröffentlicht in: | Continental shelf research 2007-05, Vol.27 (8), p.1153-1173 |
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| creator | Orvain, F. Sauriau, P.-G. Le Hir, P. Guillou, G. Cann, P. Paillard, M. |
| description | A portable erosion device (ERIS) was deployed in November 2000 and May 2001 to investigate the spatio-temporal variation of fine-grained sediment erosion over a transect on the intertidal mudflats of Marennes-Oléron Bay, western France. The objective was to relate changes in bed erodability over diurnal emersion periods to bioturbation, rapid changes in sediment characteristics, and microphytobenthos biomass.
Macrofaunal assemblages were dominated by the bivalve,
Scrobicularia plana, on the upper mudflat, and by the gastropod,
Hydrobia ulvae, on the middle mudflat. A power relationship was obtained where
τ
cr was plotted as a function of sediment density. Results from the upper part of the mudflat deviated from this relationship due to bioturbation by
S. plana. No influence of microphytobenthos (either chlorophyll
a or extracellular polymeric substances (EPS) content) was found on
τ
cr. The bivalve feeding activities altered consolidated sediments (sediment dry mass concentration of ∼700
g
l
−1) so that they became resuspended easily (
τ
cr |
| doi_str_mv | 10.1016/j.csr.2006.05.013 |
| format | Article |
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Macrofaunal assemblages were dominated by the bivalve,
Scrobicularia plana, on the upper mudflat, and by the gastropod,
Hydrobia ulvae, on the middle mudflat. A power relationship was obtained where
τ
cr was plotted as a function of sediment density. Results from the upper part of the mudflat deviated from this relationship due to bioturbation by
S. plana. No influence of microphytobenthos (either chlorophyll
a or extracellular polymeric substances (EPS) content) was found on
τ
cr. The bivalve feeding activities altered consolidated sediments (sediment dry mass concentration of ∼700
g
l
−1) so that they became resuspended easily (
τ
cr<1
Pa). Fluff layer erosion was observed, with an erosion rate dependent upon the biomass of
H. ulvae. It was also found that bioturbation by
H. ulvae was implicated (combined with grazing activities) in chl
a resuspension during the erosion of the fluff layer. Snail bioturbation stimulated the chl
a enrichment of eroded material, whilst the high snail biomass produced a decrease in suspended chl
a due to higher grazing rates.</description><identifier>ISSN: 0278-4343</identifier><identifier>EISSN: 1873-6955</identifier><identifier>DOI: 10.1016/j.csr.2006.05.013</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Animal biology ; Biodiversity and Ecology ; Bioturbation ; Bivalvia ; Chemical Sciences ; Computer Science ; Environmental Sciences ; EPS ; Eris ; Erodability ; Gastropoda ; Hydrobia ulvae ; Intertidal mudflat ; Invertebrate Zoology ; Life Sciences ; Microphytobenthos ; Modeling and Simulation ; Organic chemistry ; Resuspension ; Scrobicularia plana ; Sediment</subject><ispartof>Continental shelf research, 2007-05, Vol.27 (8), p.1153-1173</ispartof><rights>2007</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a428t-a0011f34b91690845810ecfdbc96ce45fab1500b86040acd38f202bcaa15163d3</citedby><cites>FETCH-LOGICAL-a428t-a0011f34b91690845810ecfdbc96ce45fab1500b86040acd38f202bcaa15163d3</cites><orcidid>0000-0002-8792-6150 ; 0000-0002-5360-8728</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.csr.2006.05.013$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,778,782,883,3539,27911,27912,45982</link.rule.ids><backlink>$$Uhttps://hal.science/hal-01855227$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Orvain, F.</creatorcontrib><creatorcontrib>Sauriau, P.-G.</creatorcontrib><creatorcontrib>Le Hir, P.</creatorcontrib><creatorcontrib>Guillou, G.</creatorcontrib><creatorcontrib>Cann, P.</creatorcontrib><creatorcontrib>Paillard, M.</creatorcontrib><title>Spatio-temporal variations in intertidal mudflat erodability: Marennes-Oléron Bay, western France</title><title>Continental shelf research</title><description>A portable erosion device (ERIS) was deployed in November 2000 and May 2001 to investigate the spatio-temporal variation of fine-grained sediment erosion over a transect on the intertidal mudflats of Marennes-Oléron Bay, western France. The objective was to relate changes in bed erodability over diurnal emersion periods to bioturbation, rapid changes in sediment characteristics, and microphytobenthos biomass.
Macrofaunal assemblages were dominated by the bivalve,
Scrobicularia plana, on the upper mudflat, and by the gastropod,
Hydrobia ulvae, on the middle mudflat. A power relationship was obtained where
τ
cr was plotted as a function of sediment density. Results from the upper part of the mudflat deviated from this relationship due to bioturbation by
S. plana. No influence of microphytobenthos (either chlorophyll
a or extracellular polymeric substances (EPS) content) was found on
τ
cr. The bivalve feeding activities altered consolidated sediments (sediment dry mass concentration of ∼700
g
l
−1) so that they became resuspended easily (
τ
cr<1
Pa). Fluff layer erosion was observed, with an erosion rate dependent upon the biomass of
H. ulvae. It was also found that bioturbation by
H. ulvae was implicated (combined with grazing activities) in chl
a resuspension during the erosion of the fluff layer. Snail bioturbation stimulated the chl
a enrichment of eroded material, whilst the high snail biomass produced a decrease in suspended chl
a due to higher grazing rates.</description><subject>Animal biology</subject><subject>Biodiversity and Ecology</subject><subject>Bioturbation</subject><subject>Bivalvia</subject><subject>Chemical Sciences</subject><subject>Computer Science</subject><subject>Environmental Sciences</subject><subject>EPS</subject><subject>Eris</subject><subject>Erodability</subject><subject>Gastropoda</subject><subject>Hydrobia ulvae</subject><subject>Intertidal mudflat</subject><subject>Invertebrate Zoology</subject><subject>Life Sciences</subject><subject>Microphytobenthos</subject><subject>Modeling and Simulation</subject><subject>Organic chemistry</subject><subject>Resuspension</subject><subject>Scrobicularia plana</subject><subject>Sediment</subject><issn>0278-4343</issn><issn>1873-6955</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9UE1r20AQXUILcZ3-gN50CgQqdXZXq4_0lJi6Drj4kPa8jFYjskbWKruyg39Sfkf-WNc49FgYGHjz3puZx9gXDhkHXnzbZib4TAAUGagMuLxgM16VMi1qpT6wGYiySnOZy0v2KYQtAJRFXc5Y8zjiZF060W50HvvkgN6ekCEkdog1kZ9sGwe7fdv1OCXkXYuN7e10vE1-oadhoJBu-rdX74bkHo9fkxcKUTYkS4-DoSv2scM-0Of3Pmd_lj9-L1bpevPzYXG3TjEX1ZQiAOedzJuaFzVUuao4kOnaxtSFoVx12HAF0FQF5ICmlVUnQDQGkSteyFbO2c3Z9wl7PXq7Q3_UDq1e3a31CQNeKSVEeeCRe33mjt497-O5emeDob7Hgdw-aAF1LcqyjER-JhrvQvDU_XPmoE_J662OyetT8hpU3CGj5vtZQ_HbgyWvg7EUk2itJzPp1tn_qP8CEGGM0w</recordid><startdate>20070501</startdate><enddate>20070501</enddate><creator>Orvain, F.</creator><creator>Sauriau, P.-G.</creator><creator>Le Hir, P.</creator><creator>Guillou, G.</creator><creator>Cann, P.</creator><creator>Paillard, M.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-8792-6150</orcidid><orcidid>https://orcid.org/0000-0002-5360-8728</orcidid></search><sort><creationdate>20070501</creationdate><title>Spatio-temporal variations in intertidal mudflat erodability: Marennes-Oléron Bay, western France</title><author>Orvain, F. ; Sauriau, P.-G. ; Le Hir, P. ; Guillou, G. ; Cann, P. ; Paillard, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a428t-a0011f34b91690845810ecfdbc96ce45fab1500b86040acd38f202bcaa15163d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Animal biology</topic><topic>Biodiversity and Ecology</topic><topic>Bioturbation</topic><topic>Bivalvia</topic><topic>Chemical Sciences</topic><topic>Computer Science</topic><topic>Environmental Sciences</topic><topic>EPS</topic><topic>Eris</topic><topic>Erodability</topic><topic>Gastropoda</topic><topic>Hydrobia ulvae</topic><topic>Intertidal mudflat</topic><topic>Invertebrate Zoology</topic><topic>Life Sciences</topic><topic>Microphytobenthos</topic><topic>Modeling and Simulation</topic><topic>Organic chemistry</topic><topic>Resuspension</topic><topic>Scrobicularia plana</topic><topic>Sediment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Orvain, F.</creatorcontrib><creatorcontrib>Sauriau, P.-G.</creatorcontrib><creatorcontrib>Le Hir, P.</creatorcontrib><creatorcontrib>Guillou, G.</creatorcontrib><creatorcontrib>Cann, P.</creatorcontrib><creatorcontrib>Paillard, M.</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Continental shelf research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Orvain, F.</au><au>Sauriau, P.-G.</au><au>Le Hir, P.</au><au>Guillou, G.</au><au>Cann, P.</au><au>Paillard, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spatio-temporal variations in intertidal mudflat erodability: Marennes-Oléron Bay, western France</atitle><jtitle>Continental shelf research</jtitle><date>2007-05-01</date><risdate>2007</risdate><volume>27</volume><issue>8</issue><spage>1153</spage><epage>1173</epage><pages>1153-1173</pages><issn>0278-4343</issn><eissn>1873-6955</eissn><abstract>A portable erosion device (ERIS) was deployed in November 2000 and May 2001 to investigate the spatio-temporal variation of fine-grained sediment erosion over a transect on the intertidal mudflats of Marennes-Oléron Bay, western France. The objective was to relate changes in bed erodability over diurnal emersion periods to bioturbation, rapid changes in sediment characteristics, and microphytobenthos biomass.
Macrofaunal assemblages were dominated by the bivalve,
Scrobicularia plana, on the upper mudflat, and by the gastropod,
Hydrobia ulvae, on the middle mudflat. A power relationship was obtained where
τ
cr was plotted as a function of sediment density. Results from the upper part of the mudflat deviated from this relationship due to bioturbation by
S. plana. No influence of microphytobenthos (either chlorophyll
a or extracellular polymeric substances (EPS) content) was found on
τ
cr. The bivalve feeding activities altered consolidated sediments (sediment dry mass concentration of ∼700
g
l
−1) so that they became resuspended easily (
τ
cr<1
Pa). Fluff layer erosion was observed, with an erosion rate dependent upon the biomass of
H. ulvae. It was also found that bioturbation by
H. ulvae was implicated (combined with grazing activities) in chl
a resuspension during the erosion of the fluff layer. Snail bioturbation stimulated the chl
a enrichment of eroded material, whilst the high snail biomass produced a decrease in suspended chl
a due to higher grazing rates.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.csr.2006.05.013</doi><tpages>21</tpages><orcidid>https://orcid.org/0000-0002-8792-6150</orcidid><orcidid>https://orcid.org/0000-0002-5360-8728</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0278-4343 |
| ispartof | Continental shelf research, 2007-05, Vol.27 (8), p.1153-1173 |
| issn | 0278-4343 1873-6955 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Animal biology Biodiversity and Ecology Bioturbation Bivalvia Chemical Sciences Computer Science Environmental Sciences EPS Eris Erodability Gastropoda Hydrobia ulvae Intertidal mudflat Invertebrate Zoology Life Sciences Microphytobenthos Modeling and Simulation Organic chemistry Resuspension Scrobicularia plana Sediment |
| title | Spatio-temporal variations in intertidal mudflat erodability: Marennes-Oléron Bay, western France |
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