{"refrec":{"BRefID":76197,"RR":"<b>Barlow, R.G.; Mantoura, R.F.C.; Cummings, D.G.</b> (1998). Phytoplankton pigment distributions and associated fluxes in the Bellingshausen Sea during the austral spring 1992. <i>J. Mar. Syst. 17(1-4)</i>: 97-113. <a href=\"https://dx.doi.org/10.1016/S0924-7963(98)00032-3\" target=\"_blank\">https://dx.doi.org/10.1016/S0924-7963(98)00032-3</a>","BEntID":71837,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Syst. 17(1-4)</i>: 97-113. <a href=\"https://dx.doi.org/10.1016/S0924-7963(98)00032-3\" target=\"_blank\">https://dx.doi.org/10.1016/S0924-7963(98)00032-3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Barlow, R.G.; Mantoura, R.F.C.; Cummings, D.G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Barlow, R.G.; Mantoura, R.F.C.; Cummings, D.G.","Englishabstract":"Pigment distribution patterns were investigated in the marginal ice zone of the Bellingshausen Sea and across the Drake Passage during the austral spring of November/December 1992. Elevated chlorophyll <em>a</em> (chl <em>a</em>) and fucoxanthin levels were observed at the Sub-Antarctic and Polar Fronts in the Drake Passage and at the Southern Polar Front in the Bellingshausen Sea. Investigations at 5 stations along 85°W in the Bellingshausen Sea between 70.3°S and 67.5°S revealed high concentrations of chl <em>a</em> (up to 24 000 ng l<sup>−1</sup> ice melt) and fucoxanthin in hard pack ice samples and very low levels of pigments in the underlying water column (&lt;100 ng l<sup>−1</sup>). At two ice melt stations, pigment concentrations in the ice were considerably lower and chl <em>a</em> in the upper mixed layer ranged from 120–250 ng l<sup>−1</sup>, with increased levels of hexanoyloxyfucoxanthin and chlorophyll <em>b</em> (chl <em>b</em>). In open water, the high chl <em>a</em> band at the Southern Polar Front (up to 2400 ng l<sup>−1</sup>) was associated with elevated fucoxanthin concentrations. Integrated concentrations, pigment ratios and a conversion of accessory pigments to chl a equivalents indicated that diatoms (fucoxanthin) were the most important group in the ice (&gt;70%), although prymnesiophytes (hexanoyloxyfucoxanthin) and green algae (chl <em>b</em>) were present in smaller proportions. Diatoms dominated at the open water stations (&gt;60%) and were prominent in the water column under the pack ice (52–61%). However, at the ice melt stations, prymnesiophytes (40–45%), green algae (11–13%) and, to a lesser extent, cryptophytes (4–6%; alloxanthin) collectively contributed more to the chl <em>a</em> biomass than the diatoms (37–42%). Budgeting the proportions of chloropigments indicated an increase in chlorophyllide <em>a</em> and phaeopigments from the ice to the northern open water stations, with chlorophyllide <em>a</em> being prominent in the upper water column and in the ice. Export fluxes of phytoplankton–carbon and phytodetritus in the upper 100 m were estimated from chloropigment inventories and residence times of <sup>210</sup>Po radionuclide reported by Shimmield et al. (1995) [Shimmield, G.B., Ritchie, G., Fileman, T.W., 1995. The impact of marginal zone processes on the distribution of <sup>210</sup>Pb, <sup>210</sup>Po and <sup>234</sup>Th and implications for new production in the Bellingshausen Sea Antarctica. Deep-Sea Res. II, 42 (1995) 1313–1335], revealing very low fluxes at the ice stations and up to 29 mg phyto-C m<sup>−2</sup> day<sup>−1</sup> at the open water high chlorophyll locality.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Phytoplankton pigment distributions and associated fluxes in the Bellingshausen Sea during the austral spring 1992","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-17 01:31:36.754292","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1998,"MonPub":null,"DateUpdate":"2021-02-17","DateCreate":"2005-09-05","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000077463500008","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/S0924-7963(98)00032-3"},"refs":null,"anarec":{"AnaID":76197,"PubliDate":1998,"Pagination":"97-113","XtraPublOfAnaID":null,"ISBN":null,"Volume":"17","Issue":"1-4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43079,"SerRR":"Journal of Marine Systems. 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