{"refrec":{"BRefID":211254,"RR":"<b>Savoye, N.; Aminot, A.; Treguer, P.; Fontugne, M.; Naulet, N.; Kerouel, R.</b> (2003). Dynamics of particulate organic matter d<sup>15</sup>N and d<sup>13</sup>C during spring phytoplankton blooms in a macrotidal ecosystem (Bay of Seine, France). <i>Mar. Ecol. Prog. Ser. 255</i>: 27-41. <a href=\"http://dx.doi.org/10.3354/meps255027\" target=\"_blank\">dx.doi.org/10.3354/meps255027</a>","BEntID":203176,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Ecol. Prog. Ser. 255</i>: 27-41. <a href=\"https://dx.doi.org/10.3354/meps255027\" target=\"_blank\">https://dx.doi.org/10.3354/meps255027</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Savoye, N.; Aminot, A.; Treguer, P.; Fontugne, M.; Naulet, N.; Kerouel, R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Savoye, N. <i>et al.</i>","Englishabstract":"Two cruises (April and June 1997) were carried out in the Bay of Seine, a nitrate- and ammonium-enriched ecosystem of Western Europe, to identify the major mechanisms that control d<sup>15</sup>N and d<sup>13</sup>C in spring particulate organic matter (POM). Particulate organic nitrogen (PON) d<sup>15</sup>N ranged between 0.8 and 5.2‰ in April and between 2.2 and 6.2‰ in June, while particulate organic carbon (POC) d<sup>13</sup>C ranged between –24.3 and –19.7‰, and between –20.0 and –16.2‰ during the same periods. During spring 1997, POM was highly dominated by autochthonous phytoplankton. It is shown that the variation of PON d<sup>15</sup>N is due to both nitrate mixing between river and marine waters and fractionation of N stable isotopes during nitrate utilization by phytoplankton. Therefore, similarly to what was previously shown for open ocean, d<sup>15</sup>N can be used as a proxy of spring fractional nitrate utilization in coastal ecosystems. It is also shown that POC d<sup>13</sup>C in spring is controlled by POC concentration and C:N ratio (in addition to ‘temperature effects’), which are considered here as indicators of primary production and phytoplankton degradation, respectively. The co-variation of d<sup>13</sup>C and d<sup>15</sup>N describes the spring phytoplankton dynamics: at the start of phytoplankton development, nitrate concentration is high (low d<sup>15</sup>N) and phytoplankton production is low (low d<sup>13</sup>C); then primary production increases (d<sup>13</sup>C becomes higher) and the nitrate pool diminishes (d<sup>15</sup>N becomes higher); at a later stage, the nitrate pool is depleted (high d<sup>15</sup>N), part of the phytoplankton becomes degraded and production is still high (high d<sup>13</sup>C).","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dynamics of particulate organic matter d<sup>15</sup>N and d<sup>13</sup>C during spring phytoplankton blooms in a macrotidal ecosystem (Bay of Seine, France)","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":"C and N stable isotopes; phytoplankton; coastal ecosystem; 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:000184268600003","VABBcode":null,"OpenAcc":0,"DOI":"10.3354/meps255027"},"refs":null,"anarec":{"AnaID":211254,"PubliDate":2003,"Pagination":"27-41","XtraPublOfAnaID":null,"ISBN":null,"Volume":"255","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43354,"SerRR":"Marine Ecology Progress Series. 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