In situ measurement and statistical modelling of Escherichia coli decay in small rivers
Identifieur interne : 001702 ( Main/Exploration ); précédent : 001701; suivant : 001703In situ measurement and statistical modelling of Escherichia coli decay in small rivers
Auteurs : Pascal Beaudeau [France] ; Nicolas Tousset [France] ; Franck Bruchon [France] ; Amélie Lefèvre [France] ; Huw D. Taylor [Royaume-Uni]Source :
- Water Research [ 0043-1354 ] ; 2001.
Abstract
Numerous studies have been carried out on the environmental factors associated with the decay of faecal bacteria in open (fresh or marine) waters. The present study aimed at understanding the fate of bacteria in small streams (flow <20m3s−1) for which there is a lack of knowledge. An original in situ protocol was developed for measuring the die-off of Escherichia coli (E. coli) from wastewater treatment plants. Based upon 80 values of the decay first-order parameter (K or its inverse T90), collected from five rivers in Normandy (France), a median T90 of 10h and a minimal T90 of 1.3h were obtained. K was then modelled as a linear function of variables made up from flow, water temperature and suspended particulate matter (SPM). The set of significant co-variables did not include light indicators. E. coli decay is inversely related to the river flow and it becomes highly significant below 0.3m3s−1. The positive effect of small flows on die-off is increased by water temperature over 15°C, whereas it could be reduced by SPM. The major co-variable of the model (p<10−9) is an empiric composite variable integrating the effect of flow and temperature that explains more than 40% of the variance of K. We interpreted this as an expression of predation by benthic micro-grazers which could be the main cause of E. coli die-off in small streams in temperate countries.
Url:
DOI: 10.1016/S0043-1354(01)00011-2
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000B43
- to stream Istex, to step Curation: 000B43
- to stream Istex, to step Checkpoint: 000781
- to stream Main, to step Merge: 001744
- to stream Main, to step Curation: 001702
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>In situ measurement and statistical modelling of Escherichia coli decay in small rivers</title><author><name sortKey="Beaudeau, Pascal" sort="Beaudeau, Pascal" uniqKey="Beaudeau P" first="Pascal" last="Beaudeau">Pascal Beaudeau</name></author><author><name sortKey="Tousset, Nicolas" sort="Tousset, Nicolas" uniqKey="Tousset N" first="Nicolas" last="Tousset">Nicolas Tousset</name></author><author><name sortKey="Bruchon, Franck" sort="Bruchon, Franck" uniqKey="Bruchon F" first="Franck" last="Bruchon">Franck Bruchon</name></author><author><name sortKey="Lefevre, Amelie" sort="Lefevre, Amelie" uniqKey="Lefevre A" first="Amélie" last="Lefèvre">Amélie Lefèvre</name></author><author><name sortKey="Taylor, Huw D" sort="Taylor, Huw D" uniqKey="Taylor H" first="Huw D." last="Taylor">Huw D. Taylor</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:930ECEB653AEA3C4D9CE89EC94D0B4B63B2EA3DB</idno><date when="2001" year="2001">2001</date><idno type="doi">10.1016/S0043-1354(01)00011-2</idno><idno type="url">https://api.istex.fr/document/930ECEB653AEA3C4D9CE89EC94D0B4B63B2EA3DB/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000B43</idno><idno type="wicri:Area/Istex/Curation">000B43</idno><idno type="wicri:Area/Istex/Checkpoint">000781</idno><idno type="wicri:doubleKey">0043-1354:2001:Beaudeau P:in:situ:measurement</idno><idno type="wicri:Area/Main/Merge">001744</idno><idno type="wicri:Area/Main/Curation">001702</idno><idno type="wicri:Area/Main/Exploration">001702</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">In situ measurement and statistical modelling of Escherichia coli decay in small rivers</title><author><name sortKey="Beaudeau, Pascal" sort="Beaudeau, Pascal" uniqKey="Beaudeau P" first="Pascal" last="Beaudeau">Pascal Beaudeau</name><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d’Etudes et d’Analyses de la Ville du Havre 70 quai Frissard, 76600 Le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName></affiliation></author><author><name sortKey="Tousset, Nicolas" sort="Tousset, Nicolas" uniqKey="Tousset N" first="Nicolas" last="Tousset">Nicolas Tousset</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d’Etudes et d’Analyses de la Ville du Havre 70 quai Frissard, 76600 Le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName></affiliation></author><author><name sortKey="Bruchon, Franck" sort="Bruchon, Franck" uniqKey="Bruchon F" first="Franck" last="Bruchon">Franck Bruchon</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Agence de l’Eau Seine-Normandie-Direction des Rivages Normands 21 rue de l’Homme de Bois, 14600 Honfleur</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Basse-Normandie</region><settlement type="city">Honfleur</settlement></placeName></affiliation></author><author><name sortKey="Lefevre, Amelie" sort="Lefevre, Amelie" uniqKey="Lefevre A" first="Amélie" last="Lefèvre">Amélie Lefèvre</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d’Etudes et d’Analyses de la Ville du Havre 70 quai Frissard, 76600 Le Havre</wicri:regionArea><placeName><region type="region" nuts="2">Région Normandie</region><region type="old region" nuts="2">Haute-Normandie</region><settlement type="city">Le Havre</settlement></placeName></affiliation></author><author><name sortKey="Taylor, Huw D" sort="Taylor, Huw D" uniqKey="Taylor H" first="Huw D." last="Taylor">Huw D. Taylor</name><affiliation wicri:level="1"><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>The School of the Environment, Brighton University Cockcroft Building, Lewes Road, Brighton BN2 4GJ</wicri:regionArea><wicri:noRegion>Brighton BN2 4GJ</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Water Research</title><title level="j" type="abbrev">WR</title><idno type="ISSN">0043-1354</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="2001">2001</date><biblScope unit="volume">35</biblScope><biblScope unit="issue">13</biblScope><biblScope unit="page" from="3168">3168</biblScope><biblScope unit="page" to="3178">3178</biblScope></imprint><idno type="ISSN">0043-1354</idno></series><idno type="istex">930ECEB653AEA3C4D9CE89EC94D0B4B63B2EA3DB</idno><idno type="DOI">10.1016/S0043-1354(01)00011-2</idno><idno type="PII">S0043-1354(01)00011-2</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0043-1354</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Numerous studies have been carried out on the environmental factors associated with the decay of faecal bacteria in open (fresh or marine) waters. The present study aimed at understanding the fate of bacteria in small streams (flow <20m3s−1) for which there is a lack of knowledge. An original in situ protocol was developed for measuring the die-off of Escherichia coli (E. coli) from wastewater treatment plants. Based upon 80 values of the decay first-order parameter (K or its inverse T90), collected from five rivers in Normandy (France), a median T90 of 10h and a minimal T90 of 1.3h were obtained. K was then modelled as a linear function of variables made up from flow, water temperature and suspended particulate matter (SPM). The set of significant co-variables did not include light indicators. E. coli decay is inversely related to the river flow and it becomes highly significant below 0.3m3s−1. The positive effect of small flows on die-off is increased by water temperature over 15°C, whereas it could be reduced by SPM. The major co-variable of the model (p<10−9) is an empiric composite variable integrating the effect of flow and temperature that explains more than 40% of the variance of K. We interpreted this as an expression of predation by benthic micro-grazers which could be the main cause of E. coli die-off in small streams in temperate countries.</div></front></TEI><affiliations><list><country><li>France</li><li>Royaume-Uni</li></country><region><li>Basse-Normandie</li><li>Haute-Normandie</li><li>Région Normandie</li></region><settlement><li>Honfleur</li><li>Le Havre</li></settlement></list><tree><country name="France"><noRegion><name sortKey="Beaudeau, Pascal" sort="Beaudeau, Pascal" uniqKey="Beaudeau P" first="Pascal" last="Beaudeau">Pascal Beaudeau</name></noRegion><name sortKey="Beaudeau, Pascal" sort="Beaudeau, Pascal" uniqKey="Beaudeau P" first="Pascal" last="Beaudeau">Pascal Beaudeau</name><name sortKey="Bruchon, Franck" sort="Bruchon, Franck" uniqKey="Bruchon F" first="Franck" last="Bruchon">Franck Bruchon</name><name sortKey="Lefevre, Amelie" sort="Lefevre, Amelie" uniqKey="Lefevre A" first="Amélie" last="Lefèvre">Amélie Lefèvre</name><name sortKey="Tousset, Nicolas" sort="Tousset, Nicolas" uniqKey="Tousset N" first="Nicolas" last="Tousset">Nicolas Tousset</name></country><country name="Royaume-Uni"><noRegion><name sortKey="Taylor, Huw D" sort="Taylor, Huw D" uniqKey="Taylor H" first="Huw D." last="Taylor">Huw D. Taylor</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/France/explor/LeHavreV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001702 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 001702 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/France
|area= LeHavreV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:930ECEB653AEA3C4D9CE89EC94D0B4B63B2EA3DB
|texte= In situ measurement and statistical modelling of Escherichia coli decay in small rivers
}}
| This area was generated with Dilib version V0.6.25. |  |