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1、LETTERdoi:10.1038/nature11205Reconcilingthetemperaturedependenceofrespirationacrosstimescalesandecosystemtypes1,234156GabrielYvon-Durocher*,JaneM.Caffrey,AlessandroCescatti,MatteoDossena,PauldelGiorgio,JosepM.Gasol,678119Jose´M.Montoya,JukkaPumpanen,PeterA.Staehr,MarkTr
2、immer,GuyWoodward&AndrewP.Allen*Ecosystemrespirationisthebioticconversionoforganiccarbontosscarbondioxidebyalloftheorganismsinanecosystem,includinglnRs(T)~(ERzeE)(1=kTC{1=kT)zlnR(TC)zeRð1Þbothconsumersandprimaryproducers.RespirationexhibitsanInthisexpression,lnRs(T)ist
3、henaturallogarithmofrespirationrateexponentialtemperaturedependenceatthesubcellularandforsomearbitrarysitesatabsolutetemperatureT(inkelvin(K)),ERis1individuallevels,butattheecosystemlevelrespirationcanbeanaverageamongsitesfortheapparentactivationenergy,which2–4modified
4、bymanyvariablesincludingcommunityabundancecharacterizesthetemperaturesensitivityofecosystemrespiration,andbiomass5,whichvarysubstantiallyamongecosystems6.2521andkistheBoltzmannconstant(8.62310eVK).WecentredDespiteitsimportanceforpredictingtheresponsesofthebio-thetempera
5、turedatausingafixed,arbitraryvalue(5288K515uC)spheretoclimatechange,itisasyetunknownwhetherthetemper-sothatlnR(TC)correspondstoanaverageamongsitesfortherateofaturedependenceofecosystemrespirationvariessystematicallyecosystemrespirationat15uC,R(TC).WewouldexpectR(TC)tova
6、rybetweenaquaticandterrestrialenvironments.Hereweusetheamongsitesduetofactorsthataffecttheavailabilityofreducedcarbonlargestdatabaseofrespiratorymeasurementsyetcompiledtoshow9,10substratestosupportbiomass,includingnetprimaryproductionthatthesensitivityofecosystemrespira
7、tiontoseasonalchangesin6,11–13andallochthonouscarboninputs,aswellasfactorsthataffecttemperatureisremarkablysimilarfordiverseenvironmentsthesusceptibilityofreducedcarbonsubstratestodecompositionbyencompassinglakes,rivers,estuaries,theopenoceanandforested614biota,suchasC:
8、N:Pstoichiometryandwateravailability.Wewouldandnon-forestedterrestrialecosystems,withanaverageactivation2,33al
