{"refrec":{"BRefID":229042,"RR":"<b>Cox, T.; Maris, T.; Soetaert, K.; Conley, D.; Van Damme, S.; Meire, P.; Struyf, E.</b> (2009). A regime shift in a freshwater estuarine ecosystem recovering from hypereutrophication?, <b><i>in</i></b>: <i>ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France.</i> pp. 56","BEntID":220763,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":", <b><i>in</i></b>: <i>ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France.</i> pp. 56","DocTypID":17,"DocType":"Book chapters","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Cox, T.; Maris, T.; Soetaert, K.; Conley, D.; Van Damme, S.; Meire, P.; Struyf, E.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Cox, T. <i>et al.</i>","Englishabstract":"After decades of hypereutrophication, with strong hypoxia and elevated ammonia concentrations, water quality in the freshwater part of the Schelde estuary changed rapidly. Average May-Sep oxygen concentrations more than quintupled, from 8% of saturation (1996) to 51% (2007). Ammonium concentrations decreased from a 296 µM May to Sep average (1996) to 16 µM (2007). Average May-Sep chlorophyll a concentrations increased from 15 µg/l (1996) to 178 µg/l (2007). From 2006 oversaturated oxygen concentrations are occasionally observed, caused by algal primary production. We hypothesise that inhibition of primary production and algal growth due to anoxia and/or ammonia toxicity prevented the build-up of algal biomass until a decade ago. We study the steady states and dynamics of a simple mathematical model, including this algal growth inhibition. It displays a regime shift from a heterotroph state to an autotroph state, when ammonia load is reduced below a threshold. At intermediate loads it predicts fluctuations in oxygen concentration in response to discharge peaks. Data and model results are consistent, and thus indicate a possible regime shift from heterotrophy to autotrophy in this ecosystem.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"A regime shift in a freshwater estuarine ecosystem recovering from hypereutrophication?","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"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":2009,"MonPub":null,"DateUpdate":"2014-05-09","DateCreate":"2013-09-23","SecASFANote":null,"ConfID":null,"PeerRev":null,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":229042,"PubliDate":2009,"Pagination":"56","XtraPublOfAnaID":null,"ISBN":null,"Volume":null,"Issue":null,"BRefMon":229036,"BRefMonRR":"(2009). ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France. ASLO: Texas. 320 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":null,"SerRR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"StandardTitleMon":"ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France","StartPage":56,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"M","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Cox","Firstname":"Tom","Initials":"T.","Affiliation":"Centre for Estuarine and Marine Ecology (NIOO-CEME)","Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":177199,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"CEME","InsFSN":"Koninklijke Nederlandse Akademie van Wetenschappen; Centre for Estuarine and Marine Ecology","ORCID":"0000-0002-4070-6046","PersID":9932,"InsID":12170},{"AutName":"Maris","Firstname":"Tom","Initials":"T.","Affiliation":"University of Antwerp","Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":164727,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"UA","InsFSN":"Universiteit Antwerpen","ORCID":"0000-0002-9819-6771","PersID":7232,"InsID":4538},{"AutName":"Soetaert","Firstname":"Karline","Initials":"K.","Affiliation":null,"Discriminator":"K.","CorporateFlag":0,"BEntID":220763,"AutID":4638,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0003-4603-7100","PersID":265,"InsID":null},{"AutName":"Conley","Firstname":"Daniel","Initials":"D.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":164920,"OrderNr":4,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Van Damme","Firstname":"Stefan","Initials":"S.","Affiliation":"University of Antwerp","Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":164921,"OrderNr":5,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"UA","InsFSN":"Universiteit Antwerpen","ORCID":null,"PersID":2057,"InsID":4538},{"AutName":"Meire","Firstname":"Patrick","Initials":"P.","Affiliation":"University of Antwerp","Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":144353,"OrderNr":6,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"UA","InsFSN":"Universiteit Antwerpen","ORCID":"0000-0003-2599-5350","PersID":25,"InsID":4538},{"AutName":"Struyf","Firstname":"Eric","Initials":"E.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":220763,"AutID":26147,"OrderNr":7,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":3969,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":250812,"LibID":36,"BRefID":229042,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"250812","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":[{"LitStyID":16,"Style":"Summary"}],"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":[{"PublName":"ASLO","Place":"Texas"}],"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":[{"Collection":"ScheldeMonitor","ShortName":"scheldemonitor"}],"conf":null,"proj":null,"Physdatasets":null,"spcols":{"867":{"SpName":"IMIS themes","SpColID":867,"ParSpColID":null,"TopParID":null,"ShortName":"IMIS themes","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"IMIS themes"},"639":{"SpName":"Physics and chemistry","SpColID":639,"ParSpColID":867,"TopParID":867,"ShortName":"Fysicochemie","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":867,"SpColPath":"IMIS themes/Fysicochemie"},"27":{"SpName":"ScheldeMonitor","SpColID":27,"ParSpColID":null,"TopParID":null,"ShortName":"scheldemonitor","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"scheldemonitor"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":220763,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":null,"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Bouchti, Zohra, Z.","newSesDate":{"date":"2013-09-23 08:32:54.220000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Bouchti, Zohra, Z.","updSesDate":{"date":"2014-05-09 08:30:01.097000","timezone_type":3,"timezone":"Europe/Brussels"}}}