Lipids and fatty acids in ice algae and phytoplankton from the Marginal Ice Zone in the Barents Sea

  title={Lipids and fatty acids in ice algae and phytoplankton from the Marginal Ice Zone in the Barents Sea},
  author={Stig Falk‐Petersen and John R. Sargent and J. Henderson and Else N{\o}st Hegseth and Haakon Hop and Yuri B. Okolodkov},
  journal={Polar Biology},
Abstract Samples of ice algae from the Marginal Ice Zone in the Barents Sea could be divided into two categories: one dominated by assemblages of Melosira arctica, and the other dominated by Nitzschia frigida and associated diatoms. Total lipid from the Melosira assemblages consisted of approximately equal amounts of polar lipids and triacylglycerols. Total lipid from the Nitzschia assemblages contained more triacylglycerols than polar lipids. Total lipid from the Melosira assemblages had… 
Seasonal variation in lipid and fatty acid composition of ice algae from the Barents Sea
Overall, the fatty acid compositions of the lipid fractions from spring and autumn algal samples were similar and are consistent with diatoms being the predominant group in the ice algae studied.
Lipids and trophic interactions of ice fauna and pelagic zooplankton in the marginal ice zone of the Barents Sea
Collection of lipid levels in the Barents Sea marginal ice zone deduce that A. glacialis feeds mainly on ice algae and phytodetritus, G. wilkitzkii and the Onismus spp.
Composition and distribution of the pelagic and sympagic algal assemblages in the Laptev Sea during autumnal freeze-up
Already during the early stage of autumnal freeze-up, incorporation processes, selective enrichment and subsequent growth lead to differences between surface water and sea ice algal assemblages.
Temporal variation in fatty acid composition of Ulothrix zonata (Chlorophyta) from ice and benthic communities of Lake Baikal
Observations over two years indicated that the FA profiles of both Baikalian ice and benthic populations of U. zonata, as are typical for other green algae, showed a high level of polyunsaturated FAs related to the adaptation of the alga to low temperature, favouring the hypothesis that monoenoic FAs play a principal role in maintaining the cellular membrane fluidity of U-Zonata.
Rapid consumption of phytoplankton and ice algae by Arctic soft-sediment benthic communities: Evidence using natural and 13 C-labeled food materials
Reduction of sea ice in the Arctic may significantly alter the relative fluxes of phytoplankton and ice algae to the seafloor. To examine the response of Arctic benthic communities to changing food
Lipid and fatty acids in naturally occurring particulate matter during spring and summer in a high arctic fjord (Kongsfjorden, Svalbard)
Redundancy analysis confirmed that live phytoplankton is one of the main drivers in the fatty acid changes, suggesting a negative impact of Phaeocystispouchetti-type phy Topolankton linked to advection of Atlantic waters in relation to global warming of Arctic waters.


Changes in the lipid composition of Antarctic sea-ice diatom communities during a spring bloom: an indication of community physiological status
The lipid composition of natural populations of diatoms in the sea ice at McMurdo Sound was determined during the austral spring bloom of 1985, using and Iatroscan TLC–FID system, and indicates di atoms as a more probable source of C29 sterols in the freshwater lakes than cyanobacteria or other algal groups.
Fatty acid, sterol and hydrocarbon composition of Antarctic sea ice diatom communities during the spring bloom in McMurdo Sound
The lipid composition of microalgal communities dominated by diatoms collected from the sea ice at three locations within McMurdo Sound during the austral spring bloom of 1989/90, was determined
Component Fatty Acids of the Total Lipids of Some Marine Phytoplankton
  • L. Chuecas, J. P. Riley
  • Environmental Science
    Journal of the Marine Biological Association of the United Kingdom
  • 1969
A range of 27 marine phytoplankton species, representative of several of the principal classes, has been grown under similar conditions in Erd-Schreiber medium with abundant nutrients. Harvesting was
Ice algae in the Barents Sea: types of assemblages, origin, fate and role in the ice-edge phytoplankton bloom
Ice algal accumulations were recognised by their vertical distribution in the ice, as surface, interior and bottom assemblages. The latter were quantitatively the most important in the Barents Sea
Biosynthesis and photosynthate allocation patterns of arctic ice algae
Over the cntirc spring growth season, the net synthesis of protein, IFAA, and Chl a (relative to total cell carbon) decreased with increasing light while relative synthesis of lipid and soluble polysaccharide increased, consistent with patterns of short-term photosynthate allocation.
Increasing extent of phosphorus limitation resulted in increased lipid content in the Bacillariophyceae and PrymnesiophyCEae and decreased lipid contentin the green flagellates N. atomus and Tetraselmis sp.
Lipid synthesis of three marine diatoms was studied with a 14CO2 incorporation technique in silicate limited batch cultures. Growth rates were independent of the silicate concentration but the
Marine Phytoplankter Fatty Acids
It is suggested that 5,8,11,14,17-eicosapentaenoic acid, found to be a common algal longer-chain polyunsaturated fatty acid, is characteristically deposited in the lipids of filter-feeders ingesting unicellular algae.