{"refrec":{"BRefID":75335,"RR":"<b>Krivtsov, V.; Bellinger, E.G.; Sigee, D.C.</b> (2005). Elemental composition of <i>Microcystis aeruginosa</i> under conditions of lake nutrient depletion. <i>Aquat. Ecol. 39(2)</i>: 123-134. <a href=\"https://dx.doi.org/10.1007/s10452-004-6833-5\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-004-6833-5</a>","BEntID":71016,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Ecol. 39(2)</i>: 123-134. <a href=\"https://dx.doi.org/10.1007/s10452-004-6833-5\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-004-6833-5</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Krivtsov, V.; Bellinger, E.G.; Sigee, D.C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Krivtsov, V.; Bellinger, E.G.; Sigee, D.C.","Englishabstract":"Electron probe X-ray microanalysis (XRMA) was used to determine the elemental composition of the blue-green alga, <i>Microcystis aeruginosa</i>, in a stratified freshwater lake during the late summer. Colonies of this alga were initially observed in mid-July, at a time when phosphorus concentration in the lake water had decreased to minimal levels (total P 0.04 mg l<sup>−1</sup>). The P quota of these cells was high (mean concentration 132 mmol kg<sup>−1</sup> dry weight) with a cell P to lake water P concentration ratio of 10<sup>5</sup>. The elemental concentrations of <i>Microcystis</i> remained relatively stable throughout the sampling period (July–September), with mean cell concentrations of Mg, P, S and Ca showing no significant changes. Mean elemental ratios and the ratio of monovalent/divalent cations were also relatively constant (SE <10%  mean). The pattern of cell elemental associations, determined by Factor and Pearson correlation analysis, was consistent throughout – with Mg, P, K and S forming a core tetrad of inter-correlated elements. The relative constancy of cell composition seen in <i>Microcystis</i> would be expected of an alga with a K-selection strategy. The continued high P quota over a period of nutrient depletion in lake water is consistent with the ability of this alga to sink to nutrient-rich lower regions of the water column.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Elemental composition of <i>Microcystis aeruginosa</i> under conditions of lake nutrient depletion","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-15 01:32:16.078466","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2020-10-13","DateCreate":"2005-08-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000229745100002","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10452-004-6833-5"},"refs":null,"anarec":{"AnaID":75335,"PubliDate":2005,"Pagination":"123-134","XtraPublOfAnaID":null,"ISBN":null,"Volume":"39","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42197,"SerRR":"Aquatic Ecology. 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