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- W2023132351 abstract "Abstract 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 a (chl a) 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 a (up to 24 000 ng l−1 ice melt) and fucoxanthin in hard pack ice samples and very low levels of pigments in the underlying water column ( 70%), although prymnesiophytes (hexanoyloxyfucoxanthin) and green algae (chl b) were present in smaller proportions. Diatoms dominated at the open water stations (>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 a biomass than the diatoms (37–42%). Budgeting the proportions of chloropigments indicated an increase in chlorophyllide a and phaeopigments from the ice to the northern open water stations, with chlorophyllide a 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 210 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 210 Pb , 210 Po and 234 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−2 day−1 at the open water high chlorophyll locality." @default.
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- W2023132351 date "1998-11-01" @default.
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- W2023132351 title "Phytoplankton pigment distributions and associated fluxes in the Bellingshausen Sea during the austral spring 1992" @default.
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- W2023132351 doi "https://doi.org/10.1016/s0924-7963(98)00032-3" @default.
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