Summary
Results of uniaxial compression test are compared to porosity and chlorophyll content of granular seaice samples, collected in the Weddell Sea from June to November of 1986. Compressive failure stresses are significantly correlated with the total porosity of the ice, but exhibit no correlation with chlorophyll concentration. We suggest that high chlorophyll concentrations may accompany low ice strengths only because high porosities, which are responsible for low mechanical strength, can be linked to sea-ice biology. High concentrations of ice algae may be either cause or effect of high porosities (through absorption of solar radiation in the first case or due to enhanced nutrient supply and environmental space in the second case). As a cause of high porosities, ice organisms could therefore indirectly influence the spring breakup of floes and thus the course of the ablation season.
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References
Ackley SF, Sullivan CW Physical controls on the development and characteristics of the Antarctic sea ice ecosystem. Submitted to Deep-Sea Res
Bartsch A (1989) Die Eisalgenflora des Weddellmeeres (Antarktis): Artenzusammensetzung und Biomasse sowie Ökophysiologie ausgewählter Arten (in German with English abstract). Rep Polar Res 63
Buynitskiy VK (1965) Influence of diatoms on the structure and strength of sea ice. Translated from Sov Antarkt Eksped Trudy 44:77–82
Buynitskiy VK (1968) The influence of microalgae on the structure and strength of Antarctic sea ice. Oceanology 8:771–776
Clarke DB, Ackley SF (1984) Sea ice structure and biological activity in the Antarctic marginal ice zone. J Geophys Res 89:2087–2095
Cole DM, Gould LD, Burch WD (1985) A system for mounting end caps on ice specimens. J Glaciol 31:362–365
Cox GFN, Weeks WF (1983) Equations for determining the gas and brine volumes in sea-ice samples. J Glaciol 29:306–316
Eicken H, Lange MA (1989) Development and properties of sea ice in the coastal regime of the southeastern Weddell Sea. J Geophys Res 94:8193–8206
Eicken H, Eange MA, Dieckmann GS (1991) Spatial variability of sea-ice properties in the northwestern Weddell sea. J Geophys Res 96:10603–10615
Evans CA, O'Reilly JE (1983) A handbook for the measurement of chlorophyll a in netplankton and nannoplankton. BIOMASS Handb No 9. SCAR/SCOR/IABO/ACMRR Group of Specialists on Living Resources of the Southern Ocean
Garrison DL, Sullivan CW, Ackley SF (1986) Sea ice microbial community studies in the Antarctic. BioScience 36:243–250
Lange MA, Ackley SF, Wadhams P, Dieckmann GS, Eicken H (1989) Development of sea ice in the Weddell Sea, Antarctica. Ann Glaciol 12:92–96
Maykut GA (1985) The ice environment. In: Horner R (ed) Sea ice biota. CRC Press, Boca Raton, pp 21–82
Maykut GA, Perovich DK (1987) The role of shortwave radiation in the summer decay of a sea ice cover. J Geophys Res 92:7032–7044
Mellor M (1986) Mechanical behavior of sea ice. In: Untersteiner N (ed) The geophysics of sea ice. Plenum Press, New York, NATO ASI Ser B146:165–281
Richter-Menge JA, Ackley SF, Lange MA (1990) Comparison of the compressive strength of Antarctic frazil ice and laboratory-grown columnar ice. In: Ackley SF, Weeks WF (eds) Sea ice properties and processes. Cold Reg Res Eng Lab Hanover, New Hampshire, CRREL Monogr 90–1:79–84
Snedecor GW, Cochran WG (1980) Statistical methods. Ames, The Iowa State University Press
Tucker WB, Gow AJ, Richter JA (1984) On small-scale variations of salinity in first-year sea ice. J Geophys Res 89:6505–6514
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Contribution no. 411 from the Alfred-Wegener-Institute for Polar and Marine Research
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Eicken, H., Ackley, S.F., Richter-Menge, J.A. et al. Is the strength of sea ice related to its chlorophyll content?. Polar Biol 11, 347–350 (1991). https://doi.org/10.1007/BF00239027
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DOI: https://doi.org/10.1007/BF00239027