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Author Granskog, M.A.; Virkkunen, K.; Thomas, D.N.; Ehn, J.; Kola, H.; Martma, T.
Title Chemical properties of brackish water ice in the Bothnian Bay, the Baltic Sea Type Journal Article
Year 2004 Publication Journal of Glaciology Abbreviated Journal J Glaciol
Volume 50 Issue 169 Pages 292-302
Keywords Dependent Solute Redistribution; Dissolved Organic Matter; Phase Boundary; Sulfate; Binding; Summer; Oxygen; Core; Gulf
Abstract The behavior of majors, δ¹8O, dissolved organic carbon (DOC) and trace elements was studied during the initial freezing of low-saline water (3 practical salinity units) in a freezing experiment. Samples were also collected from first-year sea ice from pack ice in the Bothnian Bay, northern Baltic Sea. During initial ice formation, the major-ion ratios in sea ice indicated variable behavior, with some ions showing relative enrichment (sulfate, calcium and magnesium), conservative behavior (sodium) or relative depletion (potassium) compared to sea water at the same salinity DOC, iron and aluminum showed enrichment in the ice, while zinc was depleted to salinity. Lead was detected in surface snow-ice layers only, implying atmospheric accumulation. First-year sea ice, with a variable growth and thermal history, showed behavior for major ions similar to that observed in new ice. However, for trace elements the picture was much more complicated, most likely due to active secondary processes such as atmospheric supply and biological activity. Ice growth has a potential impact on the chemical budgets and cycling of some elements, especially those which are selectively rejected/retained during sea-ice formation, particularly in the shallow parts of the Bothnian Bay covered with a land-fast ice cover.
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Corporate Author Thesis (up)
Publisher International Glaciological Society Place of Publication Cambridge Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0022-1430 ISBN Medium
Area Expedition Conference
Notes Isi:000227720900014 Approved no
Call Number refbase @ admin @ Granskog_etal2004_2 Serial 18
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Author Kaartokallio, H.; Kuosa, H.; Thomas, D.N.; Granskog, M.A.; Kivi, K.
Title Biomass, composition and activity of organism assemblages along a salinity gradient in sea ice subjected to river discharge in the Baltic Sea Type Journal Article
Year 2006 Publication Polar Biology Abbreviated Journal Polar Biol
Volume 30 Issue 2 Pages 183-197
Keywords
Abstract A study was undertaken to examine the activity and composition of the seasonal Baltic Sea land-fast sea-ice biota along a salinity gradient in March 2003 in a coastal location in the SW coast of Finland. Using a multi-variable data set, the less well-known algal and protozoan communities, and algal and bacterial production in relation to the physical and chemical environment were investigated. Also, the first coincident measurements of bacterial production and dissolved organic matter (DOM) in a sea-ice system are reported. Communities in sea ice were clearly autotrophy-dominated with algal biomass representing 79% of the total biomass. Protozoa and rotifers made up 18% of biomass in the ice and bacteria only 3%. Highest biomasses were found in mid-transect bottom ice. Water column assemblages were clearly more heterotrophic: 39% algae, 12% bacteria and 49% for rotifers and protozoa. Few significant correlations existed between DOM and bacterial variables, reflecting the complex origin of ice DOM. Dynamics of dissolved organic carbon, nitrogen and phosphorus (DOC, DON and DOP) were also uncoupled. A functional microbial loop is likely to be present in the studied ice. Existence of an under-ice freshwater plume affects the ecosystem functioning: Under-ice water communities are influenced directly by river-water mixing, whereas the ice system seems to be more independent–the interaction mainly taking place through the formation of active bottom communities.
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Corporate Author Thesis (up)
Publisher Springer-Verlag Place of Publication Heidelberg Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0722-4060 ISBN Medium
Area Expedition Conference
Notes Sampling: Nine stations along a 40km salinity gradient from inner Pojo Bay through the Archipelago to the edge of the open sea Approved no
Call Number refbase @ admin @ Kaartokallio_etal2006 Serial 19
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Author Leppäranta, M.; Palosuo, E.; Grönvall, H.; Kalliosaari, S.; Seinä, A.; Peltola, J. (eds)
Title Phases of the ice season in the Baltic Sea (North of 57°N) Type Book Whole
Year 1988 Publication Abbreviated Journal
Volume Issue Pages
Keywords Ice; Ice Extent / Cover; Baltic Sea
Abstract
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Corporate Author Thesis (up)
Publisher Finnish Institute of Marine Research Place of Publication Helsinki Editor Leppäranta, M.; Palosuo, E.; Grönvall, H.; Kalliosaari, S.; Seinä, A.; Peltola, J.
Language Summary Language Original Title
Series Editor Series Title Finnish Marine Research Abbreviated Series Title Finnish Mar Res
Series Volume 254 Series Issue Edition
ISSN ISBN 0357-1076 Medium
Area Expedition Conference
Notes Approved no
Call Number refbase @ admin @ Leppaeranta_etal1988 Serial 20
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Author Mock, T.; Meiners, K.M.; Giesenhagen, H.C.
Title Bacteria in sea ice and underlying brackish water at 54°26'50''N (Baltic Sea, Kiel Bight) Type Journal Article
Year 1997 Publication Marine Ecology Progress Series Abbreviated Journal Mar Ecol Prog Ser
Volume 158 Issue 1 Pages 23-40
Keywords Baltic Sea; biomass; bacteria; sea ice; chlorophyll a; Vertical distribution; Polar waters; Chlorophylls; Nutrients (mineral); Brackish Water; Ice Cover; Nutrients; Ane; Germany; Schleswig-Holstein; Kiel Bight; Ice; Chlorophyll; Nitrogen
Abstract Bacterial response to the rare event of solid ice cover in the western Baltic Sea (Kiel Bight) was investigated from February to March 1996. Samples (ice cores, brine and water) were taken at a shallow, near-shore station at irregular time intervals. Bacterial abundance, biomass and production were measured in brine and the underlying water as were the concentrations of NO?, NO?, NH?, PO? and SiO?. Vertical distributions of bacterial abundance, biomass, morphotypes and size classes and chlorophyll a and nutrients were investigated within sea ice. A bacterial growth experiment with brine bacteria was carried out to measure bacterial carbon production via total incorporation of [³H]thymidine (TTI) and [³H]leucine (TLI). During February the abundance, biomass and production of bacteria within brine exceeded values from under-ice water, whereas the opposite was observed in March. High NO? and NH? concentrations in ice and under-ice water of up to 112 µM and 55 µM, respectively, resulted in N:P ratios of 18 to 330. Algae and bacteria were considered to benefit from that nutrient supply. For bacteria this was supported by TTI and particularly high TLI rates during the ice situation, with TLI:TTI ratios of 25 to 213.
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Publisher Inter-Research Place of Publication Oldendorf/Luhe Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0171-8630 ISBN Medium
Area Expedition Conference
Notes Contains comparison among nutrient concentrations of polar regions and of the Baltic Sea Approved no
Call Number refbase @ admin @ Mock_etal1997 Serial 22
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Author Müller, H.
Title The distribution of “Belt Sea cod” and “Baltic cod” in the Baltic Sea from 1995 to 2001 estimated by discriminant analysis of the number of dorsal fin rays Type Journal Article
Year 2002 Publication ICES Council Meeting Abbreviated Journal Ices Cm
Volume L:16 Issue Pages 23
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Abstract
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Corporate Author Thesis (up)
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number refbase @ admin @ Mueller2002 Serial 23
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