{"refrec":{"BRefID":134209,"RR":"<b>Williams, R.; Poulet, S.A.</b> (1986). Relationship between the zooplankton, phytoplankton, particulate matter and dissolved free amino acids in the Celtic Sea. <i>Mar. Biol. (Berl.) 90(2)</i>: 279-284. <a href=\"https://dx.doi.org/10.1007/BF00569139\" target=\"_blank\">https://dx.doi.org/10.1007/BF00569139</a>","BEntID":128138,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 90(2)</i>: 279-284. <a href=\"https://dx.doi.org/10.1007/BF00569139\" target=\"_blank\">https://dx.doi.org/10.1007/BF00569139</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Williams, R.; Poulet, S.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Williams, R.; Poulet, S.A.","Englishabstract":"Estimates of the biomass of zooplankton, phytoplankton and particulate matter collected in the Celtic Sea during mixed-water conditions (on 8 and 9 April 1983) were compared to the concentration and diversity of sixteen dissolved free amino acids (DFAA) measured in seawater and in particles. During a day profile, variations of dissolved amino acids with depth reflected the feeding activity of copepods. The relationship was not apparent in a night profile and other processes, such as heterotrophic utilization of dissolved nitrogen by microorganisms, were thought to be involved. The ratios of total DFAA concentration (nM litre<sup>-1</sup>) in the particulate phase over the concentration in seawater ranged from 1 to 200 within the water column. Of the sixteen amino acids measured, ornithine, a decomposition product of arginine, was responsible for more than 70% of the total concentration of DFAA in seawater. In the particles, phenylalanine ranged from 30 to 88% of total DFAA. In seawater this amino acid occurred in the 20 to 40 m depths (1.3 to 9.9% of total DFAA) in the day profile and at 5 m (12.4%) and 80 m (6.4%) in the night profile. Previously it has only been found in very low concentrations (<5%) in seawater, and its presence is considered to be the result of zooplankton feeding.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Relationship between the zooplankton, phytoplankton, particulate matter and dissolved free amino acids in the Celtic Sea","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-12 01:31:20.027152","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1986,"MonPub":null,"DateUpdate":"2020-10-30","DateCreate":"2009-04-23","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1986AXT7000019","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/BF00569139"},"refs":null,"anarec":{"AnaID":134209,"PubliDate":1986,"Pagination":"279-284","XtraPublOfAnaID":null,"ISBN":null,"Volume":"90","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. 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