{"refrec":{"BRefID":75735,"RR":"<b>Denis, M.; Martin, V.; Momzikoff, A.; Gondry, G.; Stemmann, L.; Demers, S.; Gorsky, G.; Andersen, V.</b> (2003). Pulsed remineralisation in the northwestern Mediterranean Sea: a hypothesis. <i>J. Mar. Syst. 39(1-2)</i>: 19-41. <a href=\"https://dx.doi.org/10.1016/S0924-7963(02)00244-0\" target=\"_blank\">https://dx.doi.org/10.1016/S0924-7963(02)00244-0</a>","BEntID":69304,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Syst. 39(1-2)</i>: 19-41. <a href=\"https://dx.doi.org/10.1016/S0924-7963(02)00244-0\" target=\"_blank\">https://dx.doi.org/10.1016/S0924-7963(02)00244-0</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Denis, M.; Martin, V.; Momzikoff, A.; Gondry, G.; Stemmann, L.; Demers, S.; Gorsky, G.; Andersen, V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Denis, M. <i>et al.</i>","Englishabstract":"A general study of biogeochemical processes (DYNAPROC cruise) was conducted in May 1995 at a time-series station in the open northwestern Mediterranean Sea where horizontal advection was weak. Short-term variations of the vertical distributions of pico- and nanophytoplankton were investigated over four 36-h cycles, along with parallel determinations of metabolic CO<sub>2</sub> production rates and amino acid-containing colloid (AACC) concentrations at the chlorophyll maximum depth. The vertical (0–1000-m depth) distributions of (i) AACC, (ii) suspended particles and (iii) metabolic CO<sub>2</sub> production rate were documented during the initial and final stages of these 36-h cycles. This study was concerned with diel vertical migration (DVM) of zooplankton, which provided periodic perturbations. Accordingly, the time scale of the experimental work varied from a few hours to a few days.<p>Although all distributions exhibited a periodic behaviour, AACC distributions were generally not linked to diel vertical migrations. In the subsurface layer, <i>Synechococcus</i> made the most abundant population and large variations in concentration were observed both at day and at night. The corresponding integrated (over the upper 90 m) losses of <i>Synechococcus</i> during one night pointed to a potential source of exported organic matter amounting to 534 mg C m<sup>−2</sup>. This study stresses the potential importance of organic matter export from the euphotic zone through the daily grazing activity of vertically migrating organisms, which would not be accounted for by measurements at longer time scales.<p>The metabolic CO<sub>2</sub> production exhibited a peak of activity below 500 m that was shifted downward, apparently in a recurrent way and independently of the vertical distributions of AACC or of suspended particulate material. To account for this phenomenon, a «sustained wave train» hypothesis is proposed that combines the effect of the diel superficial faecal pellet production by swarming migrators and the repackaging activity of the nonmigrating midwater populations. Our results confirm the recent finding that the particulate compartment is not the major source of the observed instantaneous remineralisation rate and shed a new light on the fate of organic matter in the aphotic zone.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Pulsed remineralisation in the northwestern Mediterranean Sea: a hypothesis","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-17 01:31:36.629284","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"biological pump; phytoplankton; respiration; amino acid-containingcolloids; suspended particles; northwestern Mediterranean","OtherDescriptors":null,"Notes":null,"AnaPub":2003,"MonPub":null,"DateUpdate":"2020-10-13","DateCreate":"2005-08-24","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000180812400002","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/S0924-7963(02)00244-0"},"refs":null,"anarec":{"AnaID":75735,"PubliDate":2003,"Pagination":"19-41","XtraPublOfAnaID":null,"ISBN":null,"Volume":"39","Issue":"1-2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43079,"SerRR":"Journal of Marine Systems. 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