{"refrec":{"BRefID":211479,"RR":"<b>Harlay, J.; Borges, A.V.; Van der Zee, C.; Delille, B.; Godoi, R.H.M.; Schiettecatte, L.S.; Roevros, N.; Aerts, K.; Lapernat, P.E.; Rebreanu, L.; Groom, S.; Daro, M.H.; Van Grieken, R.; Chou, L.</b> (2010). Biogeochemical study of a coccolithophore bloom in the northern Bay of Biscay (NE Atlantic Ocean) in June 2004. <i>Prog. Oceanogr. 86(3-4)</i>: 317-336. <a href=\"http://dx.doi.org/10.1016/j.pocean.2010.04.029\" target=\"_blank\">dx.doi.org/10.1016/j.pocean.2010.04.029</a>","BEntID":203401,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Prog. Oceanogr. 86(3-4)</i>: 317-336. <a href=\"https://dx.doi.org/10.1016/j.pocean.2010.04.029\" target=\"_blank\">https://dx.doi.org/10.1016/j.pocean.2010.04.029</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Harlay, J.; Borges, A.V.; Van der Zee, C.; Delille, B.; Godoi, R.H.M.; Schiettecatte, L.S.; Roevros, N.; Aerts, K.; Lapernat, P.E.; Rebreanu, L.; Groom, S.; Daro, M.H.; Van Grieken, R.; Chou, L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Harlay, J. <i>et al.</i>","Englishabstract":"The present paper synthesizes data obtained during a multidisciplinary cruise carried out in June 2004 at the continental margin of the northern Bay of Biscay. The data-set allows to describe the different stages of a coccolithophore bloom dominated by <i>Emiliania huxleyi</i>. The cruise was carried out after the main spring phytoplankton bloom that started in mid-April and peaked in mid-May. Consequently, low phosphate (PO<sub>4</sub> < 0.2 µM) and silicate (DSi < 2.0 µM) concentrations, low partial pressure of carbon dioxide (pCO<sub>2</sub>) and high calcite saturation degree in surface waters combined with thermal stratification, probably favoured the blooming of coccolithophores. During the period of the year our cruise was carried out, internal tides induce enhanced vertical mixing at the continental shelf break leading to the injection of inorganic nutrients to surface waters that probably trigger the bloom. The bloom developed as the water-column stratified and as the water mass was advected over the continental shelf, following the general residual circulation in the area. The most developed phase of the bloom was sampled in a remote sensed high reflectance (HR) patch over the continental shelf that was characterized by low chlorophyll-a (Chl-a) concentration in surface waters (<1.0 µg L<sup>-1</sup>), high particulate inorganic carbon (PIC) concentration (similar to 8 µmol L<sup>-1</sup>) and coccolithophore abundance up to 57 x 10<sup>6</sup> cells L<sup>-1</sup>. Transparent exopolymer particles (TEP) concentrations ranged between 15 and 75 µg C L<sup>-1</sup> and carbon content of TEP represented up to 26% of the particulate organic carbon (POC: maximum concentration of 15.5 µmol L<sup>-1</sup> in the upper 40 m). Integrated primary production (PP) ranged between 210 and 680 mg C m<sup>-2</sup> d<sup>-1</sup> and integrated calcification (CAL) ranged between 14 and 140 mg C m<sup>-2</sup> d<sup>-1</sup>, within the range of PP and CAL values previously reported during coccolithophore blooms in open and shelf waters of the North Atlantic Ocean. Bacterial protein production (BPP) measurements in surface waters (0.3-0.7 µg C L<sup>-1</sup> h<sup>-1</sup>) were much higher than those reported during early phases of coccolithophore blooms in natural conditions, but similar to those during peak and declining coocolithophorid blooms reported in mesocosms. Total alkalinity anomalies with respect to conservative mixing (Delta TA) down to -49 µmol kg<sup>-1</sup> are consistent with the occurrence of biogenic precipitation of calcite, while pCO<sub>2</sub> remained 15-107 µatm lower than atmospheric equilibrium (372 µatm). The correlation between Delta TA and pCO<sub>2</sub> suggested that pCO<sub>2</sub> increased in part due to calcification, but this increase was insufficient to overcome the background under-saturation of CO<sub>2</sub>. This is related to the biogeochemical history of the water masses due to net carbon fixation by the successive phytoplankton blooms in the area prior to the cruise, hence, the investigated area remained a sink for atmospheric CO<sub>2</sub> despite calcification.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Biogeochemical study of a coccolithophore bloom in the northern Bay of Biscay (NE Atlantic Ocean) in June 2004","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":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2010,"MonPub":null,"DateUpdate":"2012-06-05","DateCreate":"2011-12-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000281937800001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.pocean.2010.04.029"},"refs":null,"anarec":{"AnaID":211479,"PubliDate":2010,"Pagination":"317-336","XtraPublOfAnaID":null,"ISBN":null,"Volume":"86","Issue":"3-4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43700,"SerRR":"Progress in Oceanography. 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