{"refrec":{"BRefID":211255,"RR":"<b>Sciandra, A.; Harlay, J.; Lefevre, D.; Lemee, R.; Rimmelin, P.; Denis, M.; Gattuso, J.P.</b> (2003). Response of coccolithophorid <i>Emiliania huxleyi</i> to elevated partial pressure of CO<sub>2</sub> under nitrogen limitation. <i>Mar. Ecol. Prog. Ser. 261</i>: 111-122. <a href=\"http://dx.doi.org/10.3354/meps261111\" target=\"_blank\">dx.doi.org/10.3354/meps261111</a>","BEntID":203177,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Ecol. Prog. Ser. 261</i>: 111-122. <a href=\"https://dx.doi.org/10.3354/meps261111\" target=\"_blank\">https://dx.doi.org/10.3354/meps261111</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Sciandra, A.; Harlay, J.; Lefevre, D.; Lemee, R.; Rimmelin, P.; Denis, M.; Gattuso, J.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Sciandra, A. <i>et al.</i>","Englishabstract":"Precipitation of calcium carbonate by phytoplankton in the photic oceanic layer is an important process regulating the carbon cycling and the exchange Of CO<sub>2</sub> at the ocean-atmosphere interface. Previous experiments have demonstrated that, under nutrient-sufficient conditions, doubling the partial pressure Of CO<sub>2</sub> (pCO<sub>2</sub>) in seawater-a likely scenario for the end of the century-can significantly decrease both the rate of calcification by coccolithophorids and the ratio of inorganic to organic carbon production. The present work investigates the effects of high pCO<sub>2</sub> on calcification by the coccolithophore <i>Emiliania huxleyi</i> (Strain TW1) grown under nitrogen-limiting conditions, a situation that can also prevail in the ocean. Nitrogen limitation was achieved in NO<sub>3</sub>-limited continuous cultures renewed at the rate of 0.5 d<sup>-1</sup> and exposed to a saturating light level. pCO<sub>2</sub> was increased from 400 to 700 ppm and controlled by bubbling CO<sub>2</sub>-rich or CO<sub>2</sub>-free air into the cultures. The pCO<sub>2</sub> shift has a rapid effect on cell physiology that occurs within 2 cell divisions subsequent to the perturbation. Net calcification rate (C) decreased by 25% and, in contrast to previous studies with N-replete cultures, gross community production (GCP) and dark community respiration (DCR) also decreased. These results suggest that increasing pCO<sub>2</sub> has no noticeable effect on the calcification/photosynthesis ratio (C/P) when cells of <i>E. huxleyi</i> are NO<sub>3</sub>-limited.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Response of coccolithophorid <i>Emiliania huxleyi</i> to elevated partial pressure of CO<sub>2</sub> under nitrogen limitation","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":"calcification; carbon fixation; coccolith; Emiliania huxleyi; nitrate;","OtherDescriptors":null,"Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2012-01-25","DateCreate":"2011-12-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000186704400009","VABBcode":null,"OpenAcc":0,"DOI":"10.3354/meps261111"},"refs":null,"anarec":{"AnaID":211255,"PubliDate":2003,"Pagination":"111-122","XtraPublOfAnaID":null,"ISBN":null,"Volume":"261","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43354,"SerRR":"Marine Ecology Progress Series. 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