{"refrec":{"BRefID":210953,"RR":"<b>Mari, X.; Rassoulzadegan, F.; Brussaard, C.P.D.; Wassmann, P.</b> (2005). Dynamics of transparent exopolymeric particles (TEP) production by <i>Phaeocystis globosa</i> under N- or P-limitation: a controlling factor of the retention/export balance. <i>Harmful Algae 4(5)</i>: 895-914. <a href=\"http://dx.doi.org/10.1016/j.hal.2004.12.014\" target=\"_blank\">dx.doi.org/10.1016/j.hal.2004.12.014</a>","BEntID":202875,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Harmful Algae 4(5)</i>: 895-914. <a href=\"https://dx.doi.org/10.1016/j.hal.2004.12.014\" target=\"_blank\">https://dx.doi.org/10.1016/j.hal.2004.12.014</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mari, X.; Rassoulzadegan, F.; Brussaard, C.P.D.; Wassmann, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mari, X. <i>et al.</i>","Englishabstract":"The concentration of transparent exopolymeric particles (TEP) was monitored during <i>Phaeocystis globosa</i> blooms that developed in mesocosms under different initial N:P ratios (from N- to P-limited conditions). TEP concentration was measured using the microscopic (TEPmicro, ppm) and the colorimetric (TEPcolor, Xanthan equiv. L<sup>-1</sup>) methods. TEP concentrations varied from 5 to >75 ppm and from 60 to > 1500 µg Xanthan equiv. L<sup>-1</sup>, and were relatively low until the mesocosms reached nutrient (either N or P) depletion and then increased abruptly. From the TEPmicro versus TEPcolor concentrations comparison and from their relation to chlorophyll a concentrations, two phases for the dynamics of TEP production were identified: (1) production through active release of precursors during the growth phase of <i>P. globosa</i> - defined as TEP1 - and their integration into the TEP pool through coagulation processes; (2) release of large TEP from the mucilaginous matrix of <i>P. globosa</i> colonies subsequent to disruption caused by nutrient depletion - defined as TEP2 - and their direct integration into the TEP pool outside the constraint of coagulation. The formation of a multiorigin TEP pool during <i>P. globosa</i> blooms may have implications for the fate of the blooms, due to difference in TEP bioreactivity according to their source and to difference in timing and intensity of TEP1 versus TEP2 production according to N- or P-depletion. For <i>P. globosa</i> blooms developing under N-limiting conditions, the transition from the first source (i.e. TEP1) to the second one (i.e. TEN was a slow and continuous process. In contrast, the <i>P. globosa</i> bloom developing under P-limiting conditions showed the sudden formation of heavy mucous aggregates when P became depleted, that may have been caused by a massive release of TEP2. Our study suggests that the nutrient regime may control the export vs. retention balance during <i>P. globosa</i> blooms, via production of a multiorigin TEP pool.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dynamics of transparent exopolymeric particles (TEP) production by <i>Phaeocystis globosa</i> under N- or P-limitation: a controlling factor of the retention/export balance","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":"transparent exopolymeric particles; phaeocystis globosa; stainability;","OtherDescriptors":null,"Notes":null,"AnaPub":2005,"MonPub":null,"DateUpdate":"2015-11-06","DateCreate":"2011-12-22","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000231256200007","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.hal.2004.12.014"},"refs":null,"anarec":{"AnaID":210953,"PubliDate":2005,"Pagination":"895-914","XtraPublOfAnaID":null,"ISBN":null,"Volume":"4","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45642,"SerRR":"Harmful Algae. 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