Hyporheic biofilm development on artificial substrata, as a tool for assessing trophic status of aquatic systems : first results
To determine the relationship between biofilm characteristics and organic nutrient content, we investigated the development of hyporheic biofilms on artificial substrata (glass slides) in the early phase of bacterial colonization (one week) in contrasting river habitats with significantly different...
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Published in: | Annales de limnologie 1998-06, Vol.34 (2), p.119-128 |
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description | To determine the relationship between biofilm characteristics and organic nutrient content, we investigated the development of hyporheic biofilms on artificial substrata (glass slides) in the early phase of bacterial colonization (one week) in contrasting river habitats with significantly different concentrations of dissolved organic carbon (DOC) and biodegradable and refractory DOC (BDOC and RDOC). Results suggest that the quality of DOC (i.e. BDOC versus RDOC content) controlled electron -transport system (ETS)-active bacterial abundances early in colonization, while DOC concentrations limit biofilm development only in the latter phase of colonization.
Afin de mettre en évidence les relations entre les caractéristiques des biofilms et les concentrations en nutriments organiques du milieu, nous avons suivi la croissance de biofilms hyporhéiques sur des substrats artificiels (lames de verre) durant les premiers stades de colonisation (1 semaine) dans deux habitats aquatiques où les concentrations en carbone organique dissous (COD) et en COD réfractaire et biodégradable (CODR et CODB) sont significativement différentes. Les résultats laissent supposer que la qualité du DOC (i.e. CODB et CODR) exercerait un contrôle sur les bactéries à système de transport d'électrons (STE) actif dès les premiers stades de colonisation, alors que les concentrations en COD ne deviendraient quantitativement limitantes que pour des biofilms bien développés. |
doi_str_mv | 10.1051/limn/1998011 |
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Afin de mettre en évidence les relations entre les caractéristiques des biofilms et les concentrations en nutriments organiques du milieu, nous avons suivi la croissance de biofilms hyporhéiques sur des substrats artificiels (lames de verre) durant les premiers stades de colonisation (1 semaine) dans deux habitats aquatiques où les concentrations en carbone organique dissous (COD) et en COD réfractaire et biodégradable (CODR et CODB) sont significativement différentes. Les résultats laissent supposer que la qualité du DOC (i.e. CODB et CODR) exercerait un contrôle sur les bactéries à système de transport d'électrons (STE) actif dès les premiers stades de colonisation, alors que les concentrations en COD ne deviendraient quantitativement limitantes que pour des biofilms bien développés.</description><identifier>ISSN: 0003-4088</identifier><identifier>EISSN: 2100-000X</identifier><identifier>DOI: 10.1051/limn/1998011</identifier><identifier>CODEN: ANLIB3</identifier><language>eng</language><publisher>Toulouse: EDP Sciences</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; bacterial counts ; bactéries à STE actif ; Biological and medical sciences ; COD ; DOC ; dénombrements bactériens ; eau interstitielle ; ETS-active bacteria ; Fresh water ecosystems ; Fundamental and applied biological sciences. Psychology ; interstitial water ; Synecology</subject><ispartof>Annales de limnologie, 1998-06, Vol.34 (2), p.119-128</ispartof><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2841-ab4d8a931ae5c9c7a37c502bfad1d051b4b8e1a8eecc836768a9a5d81fcc9a163</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2336210$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Claret, C.</creatorcontrib><title>Hyporheic biofilm development on artificial substrata, as a tool for assessing trophic status of aquatic systems : first results</title><title>Annales de limnologie</title><description>To determine the relationship between biofilm characteristics and organic nutrient content, we investigated the development of hyporheic biofilms on artificial substrata (glass slides) in the early phase of bacterial colonization (one week) in contrasting river habitats with significantly different concentrations of dissolved organic carbon (DOC) and biodegradable and refractory DOC (BDOC and RDOC). Results suggest that the quality of DOC (i.e. BDOC versus RDOC content) controlled electron -transport system (ETS)-active bacterial abundances early in colonization, while DOC concentrations limit biofilm development only in the latter phase of colonization.
Afin de mettre en évidence les relations entre les caractéristiques des biofilms et les concentrations en nutriments organiques du milieu, nous avons suivi la croissance de biofilms hyporhéiques sur des substrats artificiels (lames de verre) durant les premiers stades de colonisation (1 semaine) dans deux habitats aquatiques où les concentrations en carbone organique dissous (COD) et en COD réfractaire et biodégradable (CODR et CODB) sont significativement différentes. Les résultats laissent supposer que la qualité du DOC (i.e. CODB et CODR) exercerait un contrôle sur les bactéries à système de transport d'électrons (STE) actif dès les premiers stades de colonisation, alors que les concentrations en COD ne deviendraient quantitativement limitantes que pour des biofilms bien développés.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>bacterial counts</subject><subject>bactéries à STE actif</subject><subject>Biological and medical sciences</subject><subject>COD</subject><subject>DOC</subject><subject>dénombrements bactériens</subject><subject>eau interstitielle</subject><subject>ETS-active bacteria</subject><subject>Fresh water ecosystems</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>interstitial water</topic><topic>Synecology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Claret, C.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ASFA: Marine Biotechnology Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Marine Biotechnology Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Annales de limnologie</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Claret, C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hyporheic biofilm development on artificial substrata, as a tool for assessing trophic status of aquatic systems : first results</atitle><jtitle>Annales de limnologie</jtitle><date>1998-06</date><risdate>1998</risdate><volume>34</volume><issue>2</issue><spage>119</spage><epage>128</epage><pages>119-128</pages><issn>0003-4088</issn><eissn>2100-000X</eissn><coden>ANLIB3</coden><abstract>To determine the relationship between biofilm characteristics and organic nutrient content, we investigated the development of hyporheic biofilms on artificial substrata (glass slides) in the early phase of bacterial colonization (one week) in contrasting river habitats with significantly different concentrations of dissolved organic carbon (DOC) and biodegradable and refractory DOC (BDOC and RDOC). Results suggest that the quality of DOC (i.e. BDOC versus RDOC content) controlled electron -transport system (ETS)-active bacterial abundances early in colonization, while DOC concentrations limit biofilm development only in the latter phase of colonization.
Afin de mettre en évidence les relations entre les caractéristiques des biofilms et les concentrations en nutriments organiques du milieu, nous avons suivi la croissance de biofilms hyporhéiques sur des substrats artificiels (lames de verre) durant les premiers stades de colonisation (1 semaine) dans deux habitats aquatiques où les concentrations en carbone organique dissous (COD) et en COD réfractaire et biodégradable (CODR et CODB) sont significativement différentes. Les résultats laissent supposer que la qualité du DOC (i.e. CODB et CODR) exercerait un contrôle sur les bactéries à système de transport d'électrons (STE) actif dès les premiers stades de colonisation, alors que les concentrations en COD ne deviendraient quantitativement limitantes que pour des biofilms bien développés.</abstract><cop>Toulouse</cop><pub>EDP Sciences</pub><doi>10.1051/limn/1998011</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Animal and plant ecology Animal, plant and microbial ecology bacterial counts bactéries à STE actif Biological and medical sciences COD DOC dénombrements bactériens eau interstitielle ETS-active bacteria Fresh water ecosystems Fundamental and applied biological sciences. Psychology interstitial water Synecology |
title | Hyporheic biofilm development on artificial substrata, as a tool for assessing trophic status of aquatic systems : first results |
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