{"refrec":{"BRefID":55399,"RR":"<b>Hamm, C.E.; Rousseau, V.</b> (2003). Composition, assimilation and degradation of <i>Phaeocystis globosa</i>-derived fatty acids in the North Sea. <i>J. Sea Res. 50(4)</i>: 271-283. <a href=\"http://dx.doi.org/10.1016/s1385-1101(03)00044-3\" target=\"_blank\">dx.doi.org/10.1016/s1385-1101(03)00044-3</a>","BEntID":53092,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>J. Sea Res. 50(4)</i>: 271-283. <a href=\"https://dx.doi.org/10.1016/s1385-1101(03)00044-3\" target=\"_blank\">https://dx.doi.org/10.1016/s1385-1101(03)00044-3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Hamm, C.E.; Rousseau, V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Hamm, C.E.; Rousseau, V.","Englishabstract":"The fate of a <i>Phaeocystis globosa</i> bloom in the southern North Sea off Belgium, the Netherlands and Germany in May 1995 was investigated during a cruise with RV ‘Belgica’. We used fatty acids as biomarkers to follow the fate of <i>Phaeocystis</i>-derived biomass of a <i>Phaeocystis</i>-dominated spring bloom. The bloom, in which up to >99% of the biomass was contributed by <i>Phaeocystis</i>, showed a fatty acid composition with a characteristically high abundance of polyunsaturated C<sub>18</sub>-fatty acids, which increased in concentration with number of double bonds up to 18:5 (n-3), and high concentrations of 20:5 (n-3) and 22:6 (n-3). In contrast to most previous studies, fatty acid analysis of the mesozooplankton community (mainly calanoid copepods) and meroplankton (<i>Carcinus maenas</i> megalope) indicated that <i>P. globosa</i> was a major component (ca. 70% and 50%, respectively) in the diet of these organisms. Massive accumulations of amorphous grey aggregates, in which <i>Phaeocystis</i> colonies were major components, were dominated by saturated fatty acids and contained only few of the polyunsaturated C<sub>18</sub>-fatty acids. A hydrophobic surface slick that covered the water surface during the bloom showed very similar patterns. Foam patches contained few <i>Phaeocystis</i>-typical fatty acids, but increased amounts of diatom-typical compounds such as 16:1 (n-7) and 20:5 (n-3), and 38% fatty alcohols, indicating that wax esters dominated the lipid fraction in the foam with ca. 76% (w/w). The fatty acid compositions of surface sediment showed that no sedimentation of fresh <i>Phaeocystis</i> occurred during the study. The results indicate that <i>Phaeocystis</i>-derived organic matter degraded while floating or in suspension, and had not reached the sediment in substantial amounts.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Composition, assimilation and degradation of <i>Phaeocystis globosa</i>-derived fatty acids in the North Sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"phytoplankton; Phaeocystis; trophic fate; degradation; fatty acids","OtherDescriptors":null,"Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2012-04-03","DateCreate":"2003-11-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000186725800001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/s1385-1101(03)00044-3"},"refs":null,"anarec":{"AnaID":55399,"PubliDate":2003,"Pagination":"271-283","XtraPublOfAnaID":null,"ISBN":null,"Volume":"50","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43261,"SerRR":"Journal of Sea Research. 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