{"refrec":{"BRefID":15199,"RR":"<b>Mwaura, F.B.; Widdowson, D.</b> (1992). Nitrogenase activity in the papyrus swamps of Lake Naivasha, Kenya. <i>Hydrobiologia 232(1)</i>: 23-30. <a href=\"https://dx.doi.org/10.1007/BF00014608\" target=\"_blank\">https://dx.doi.org/10.1007/BF00014608</a>","BEntID":15199,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Hydrobiologia 232(1)</i>: 23-30. <a href=\"https://dx.doi.org/10.1007/BF00014608\" target=\"_blank\">https://dx.doi.org/10.1007/BF00014608</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mwaura, F.B.; Widdowson, D.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mwaura, F.B.; Widdowson, D.","Englishabstract":"Nitrogenase activity (acetylene reduction activity) was found to occur universally in the <i>Cyperus papyrus</i> swamp in Lake Naivasha. Low rates of acetylene reduction activity (0.9-104.9 mnol C<sub>2</sub>H<sub>4</sub> g d.wt. roots<sup>-1</sup> h<sup>-1</sup>) were associated with excised roots of <i>C. papyrus</i> but higher rates of activity (89.0- 280.4 mnol C<sub>2</sub>H<sub>4</sub> g d.wt. roots<sup>-1</sup> h<sup>-1</sup>) were associated with intact root systems of the plant. It was estimated that nitrogen fixation associated with young roots alone could supply about 26% of the nitrogen requirernents of growing papyrus plants. Acetylene reduction activity in the lake bottom sediments was generally low and associated with adjacent papyrus stands. Plate counts of putative aerobic and facultatively anaerobic N<sub>2</sub>-fixing bacteria associated with papyrus roots showed the presence of high numbers of diazotrophs (5.4 x 10<sup>6</sup> CFU g d.wt. roots<sup>-1</sup>). Fewer numbers of N<sub>2</sub>-fixing bacteria were detected in the sediments (1.9 X 10³-3.2 X 10<sup>4</sup> CFU g d.wt. sediment<sup>-1</sup>).","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Nitrogenase activity in the papyrus swamps of Lake Naivasha, Kenya","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1992,"MonPub":null,"DateUpdate":"2023-02-06","DateCreate":"2001-08-08","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1992JA10300005","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/BF00014608"},"refs":null,"anarec":{"AnaID":15199,"PubliDate":1992,"Pagination":"23-30","XtraPublOfAnaID":null,"ISBN":null,"Volume":"232","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42943,"SerRR":"Hydrobiologia. 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ISSN 0018-8158; e-ISSN 1573-5117","StandardTitleSer":"Hydrobiologia","ISSN":"0018-8158","AbbrevSer":"Hydrobiologia","StandardTitleMon":null,"StartPage":23,"Pages":8,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Mwaura","Firstname":null,"Initials":"F.B.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":15199,"AutID":19130,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Widdowson","Firstname":null,"Initials":"D.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":15199,"AutID":19131,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":null,"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"Springer","City":"The Hague"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":15199,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":15199,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":[{"URL":"https://dx.doi.org/10.1007/BF00014608","externalID":"10.1007/BF00014608","URLTypeCode":"DOI","URLID":109499,"URLTypID":13,"URLType":"DOI","URLPrefix":"http://dx.doi.org/"}],"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":"VLIZ2000\\philip","newSesDate":{"date":"2001-08-08 15:17:28.503000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Bouchti, Zohra, Z.","updSesDate":{"date":"2023-02-06 08:37:58.523000","timezone_type":3,"timezone":"Europe/Brussels"}}}