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《Biological consumption of carbon monoxide in一氧化碳的生物消耗 特拉華灣、大西洋西北部和博福特?！酚蓵?huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、MARINEECOLOGYPROGRESSSERIESVol.290:1–14,2005PublishedApril13MarEcolProgSerBiologicalconsumptionofcarbonmonoxideinDelawareBay,NWAtlanticandBeaufortSeaHuixiangXie1,*,OliverC.Zafiriou2,ThomasP.Umile3,4,DavidJ.Kieber31InstitutdesSciencesdelaMerdeRimouski,UniversitéduQuébecàRimo
2、uski,310AlléedesUrsulines,Rimouski,QuébecG5L3A1,Canada2DepartmentofMarineChemistryandGeochemistry,WoodsHoleOceanographicInstitution,266WoodsHoleRoad,WoodsHole,Massachusetts02543,USA3DepartmentofChemistry,CollegeofEnvironmentalScienceandForestry,StateUniversityofNewYork,1For
3、estryDrive,Syracuse,NewYork13210,USA4Presentaddress:DepartmentofChemistry,TheUniversityofScranton,223MonroeAvenue,Scranton,Pennsylvania18510,USAABSTRACT:Microbialconsumptionisthedominantsinkofoceaniccarbonmonoxide(CO),oneofthemajorcarbon-containingphotoproductsofchromophori
4、cdissolvedorganicmatterinmarinewaters.Thisstudypresentsfirst-ordermicrobialCOconsumptionrateconstants(kCO)determinedusingwhole-waterdarkincubationsinsummerandfallindiversemarineecosystemscoveringtheDelawareBay,NWAtlantic,andBeaufortSea.ThemicrobialCOconsumptionrateconstant,
5、kCO(mean±SD)was1.11±0.76h–1intheDelawareBay,0.33±0.26h–1inthecoastalAtlantic,0.099±0.054h–1intheopenAtlantic,0.040±0.012h–1inthecoastalBeaufortSeaand0.020±0.0060h–1intheoffshoreBeaufortSea.ThekCOintheDelawareBaycovariedwithchlorophyllaconcentration([chla]),risingwithincreas
6、ingsalinityintherange0to19anddiminishingwithfurtherincreasingsalinity.ThekCOintheBeaufortSeaissignificantlypositivelycorrelatedwith[chla].BoththeAtlanticandcross-systemdatasetsshowedsignificantpositivecorrelationsbetweenkCOandtheproductof[chla]andwatertemperature,suggesting
7、that[chla]canbeusedasanindicatorofCO-consumingbacterialactivityintheareasandseasonssampledinthisstudy.MicrobialCOconsump-tionwasshowntofollowWright-Hobbiekinetics,withvariablebutlowhalf-saturationconcentra-tions:~1nMintheBeaufortSeaandGulfStreamand2to18nMinthecoastalNWAtlan
8、tic.Theselowhalf-saturationconcentrationssuggestthatmicrobialCOconsumptioninseawat
