{"refrec":{"BRefID":12052,"RR":"<b>Joiris, C.</b> (1977). A propos du rôle des bactéries planctoniques dans les ecosystèmes marins: communication présentée à l'Ecole Européenne d'Eté d'Environnement, Louvain-la-Neuve, juillet 1977. Vrije Universiteit Brussel: Louvain-la-Neuve. 21 pp.","BEntID":12052,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". Vrije Universiteit Brussel: Louvain-la-Neuve.  21 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Joiris, C.","OrigTitleTranslFlag":1,"Authorstringtrunc":"Joiris, C.","Englishabstract":"Resulting from synecological studies in some areas of the southern North Sea, a contradiction became evident between measurements of primary production and determinations of the activities consuming organic matter. In the Southern Bight, the consumption is 10 to 20 times higher than the production. This means that the primary production has been underestimated, and/or the consumption over-estimated. In order to discuss the validity of the methods used for determining the respiration activities, some results are presented: a. during a 24 h. cycle at the Sluice-Dock of Ostend, the variations of the oxygen concentration in the water are explained by the measured activities and diffusion fluxes; b. two different methods are shown to give comparable results : the initial rate of oxygen consumption and the anapheratic fixation of CO<sub>2</sub>.The extrapolation of measured respiration rates in function of time and depth is discussed. The obtained results for organic matter, respiration activities and their ratio: the turnover rate, are compared with other ones from the literature. No argument was found against the validity of the methods used for the determination of respiration activities. There- fore, it is suggested to look also for possible errors in the evaluation of primary production, and more particularly to the respiration and excretion activities of phytoplancton in the dark: at night and under the euphatic zone.","AbstractOtherLang":"Au cours d'un travail d'équipe, concernant l'étude synécologique de plusieurs biotopes du secteur-Sud-Est de la Mer du Nord, est apparue une contradiction entre les mesures de production primaire et de consommationdes matieres organiques ainsi formées. La consommation est de 10 à 20 fois plus élevée que la production.Ces résultats indiquent que la production primaire a été sous-estimée, ou/et que la consommation a été surévaluée. C'est pourquoi la validité des méthodes utilisée doit être discutée. Dans le cas des activités de consommation, les résultats obtenus semblent corrects et sont en accord avec les données de la littérature. Aucun argument n'ayant été trouvé contre la validité des résultats de consommation des matieres organiques, il est suggéré que la source d'erreur puisse se situer au niveau de la production primaire, et plus articulierement au niveau de la respiration et de l'excrétion phytoplanctoniques a l'obscurité, c'est-a-dire tant de nuit que sous la zone euphotique.","BibLvlCode":"M","StandardTitle":"A propos du rôle des bactéries planctoniques dans les ecosystèmes marins: communication présentée à l'Ecole Européenne d'Eté d'Environnement, Louvain-la-Neuve, juillet 1977","OrigTitleLangCode":"fr","OrigTitleLangCodeExtended":"fre","OrigTitleLangID":22,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1977,"DateUpdate":"2020-03-16","DateCreate":"2001-06-22","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":12052,"ISBN":null,"PubliDate":1977,"IssueDate":null,"Volume":null,"Issue":null,"Pagination":"21","Place":"Louvain-la-Neuve","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":null,"SerRR":null,"Ser2BRefID":null,"Ser2RR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"Degree":null,"ThesisID":null,"InsID":null,"Acronym":null,"FullStandardName":null,"ToPubliDate":null,"SerNotes":null,"eISBN":null,"Pages":21},"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"Pleinlaan 2","Email":null,"Line2":null,"EnvName":"Belgium"},"othpubs":null,"ownerships":null,"authors":[{"AutName":"Joiris","Firstname":null,"Initials":"C.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":12052,"AutID":5568,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":156,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":239155,"LibID":36,"BRefID":12052,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"239155","RFID":null,"PaidValue":null,"Medium":"Server","Description":"VLIZ Open Access","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Open access","URL":null,"ClassifID":53,"Classification":"Open access","ReqLink":null,"ClassifTypID":1,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":null,"InternalReq":0,"LoggedInReq":0,"Disclaimer":null,"DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":[{"Collection":"OMA - 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