Size-dependent growth of Microcystis colonies

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1、AquatEcol(2014)48:207–217DOI10.1007/s10452-014-9476-1Size-dependentgrowthofMicrocystiscoloniesinashallow,hypertrophiclake:useoftheRNA-to-totalorganiccarbonratioMingLi•WeiZhu•XiaoxuanDai•ManXiao•GloriaAppiah-Sefah•PhilipNtiNkrumahReceived:6July2013/Accepted:4March2014/Publishedonline:11M

2、arch2014ÓSpringerScience+BusinessMediaDordrecht2014AbstractMicrocystiswasculturedunderstandardnotchangetherelationshipbetweengrowthrateandconditionsinBG-11andM-11media.Usingresultsofcolonysize,butthegrowthrateoflargercolonieswasananalysisofRNAandtotalorganiccarbon(TOC)higherthanthegrowt

3、hrateofsmallercoloniesatcontent,asignificantlogarithmicrelationshipbetweenconditionsoflowtotalnitrogen,lowtotaldissolvedMicrocystisgrowthrateandtheRNA/TOCratiowasphosphorusconcentration,andhighlightintensity.describedtomeasurethegrowthrate.ColonialMicro-Takentogether,theseresultssuggestt

4、hatlargecolonialcystissamplescollectedinashallow,hypertrophiclakeMicrocystispossessanadvantagethatisaconsequence(LakeTaihu,China)duringMay–November2012ofthisfastergrowthatlowernutrientconcentrationsweredividedintosixsizeclasses(75,75–100,andhighlightintensities.100–150,150–300,300–500,

5、and[500lm),andtheRNA/TOCratioofeachclasswasanalyzedtoevaluateKeywordsMicrocystis
Colony
differencesingrowth.ThegrowthrateofcoloniesinSize-dependent
Growthratethe150–300-lmsizeclasswashighestfromMaytoAugust,butthegrowthrateincreasedalongwiththeincreaseincolonysizefromSeptembertoNovember.

6、IntroductionOurresultsalsoindicatedthatwatertemperaturedidLargecolonialformsofMicrocystisareconsideredtobeanimportantcontributingfactorforalgaebloomHandlingEditor:BasW.Ibelings.formationinlakesandreservoirs(Yamamotoetal.2011).TheecologicaladvantagesthatcontributetoElectronicsupplementar

7、ymaterialTheonlineversionofthisdominanceincludefastverticalmigrationthisarticle(doi:10.1007/s10452-014-9476-1)containssupple-(KromkampandWalsby1990;Nakamuraetal.mentarymaterial,whichisavailabletoauthorizedusers.M.Li(&)W.Zhu
X.Dai
M.Xiao
G.Appiah-Sefah
CollegeofResourcesandEnvir