By P. G. Quilty (auth.), Dr. K. R. Kerry, Professor Dr. G. Hempel (eds.)

ISBN-10: 3642840744

ISBN-13: 9783642840746

ISBN-10: 3642840760

ISBN-13: 9783642840760

Antarctic Ecosystems includes fifty five papers offered on the 5th Symposium on Antarctic Biology held below the auspices of the medical Committee on Antarctic study (SCAR) in Hobart, Australia, 29 August - three September, 1988. either brief- and long term alterations in ecosystems and group buildings attributable to normal and human components have been mentioned to aid comprehend the ecological approaches occurring in a altering atmosphere. the range of ecological components needs to be identified for the improvement of practical tracking recommendations and sound conservation practices.

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Extra resources for Antarctic Ecosystems: Ecological Change and Conservation

Example text

There were some clear contrasts in the nutrient chemistry of the two types of water. 001) than in those of the Undulating Ice (Fig. 2). The distributions scarcely overlap and 90% of the Pinnacle Ice DRP values were below 8 mgm- 3 while 62% of the Undulating Ice values were above 8 mgm - 3. 001). Concentrations of dissolved inorganic nitrogen (DIN) All waters were relatively clear with the pond flora dominated by the benthic mats rather than planktonic populations. In total, 58 algal taxa were identified from the McMurdo Ice Shelf of which at least 17 occurred in more than 25 % of the water bodies sampled.

The benthic communities there had a significantly lower biomass with unicellular chlorophytes and diatoms more likely to dominate. Kellogg and Kellogg (1987) put forward suggestions to account for local variability in diatom communities on the Ice Shelf. These include the presence of salt lenses in the ice and different patterns of marine aerosol deposition. Our nutrient analyses showed that dissolved Nand P compounds were in greater concentrations in waters on the Undulating than Pinnacle Ice (Fig.

Hist Bioi 1 :45-64 Valentine JW (1973) Evolutionary paleoecology of the marine biosphere. Prentice-Hall, Englewood Cliffs, New Jersey, 511 pp Valentine JW (1984) Climate and evolution in the shallow sea. In: Brenchley PJ (ed) Fossils and climate. John Wiley, Chichester, pp 265-277 Vol3 J (1988) Zoogeographic and Gemeinschaftsanalyse des Makrozoobenthos des Weddellmeeres (Antarktis). Berichte zur Polarforschung 45: 145 pp White MG, Robins MW (1972) Biomass estimates from Borge Bay, Signy Island, South Orkney Islands.

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Antarctic Ecosystems: Ecological Change and Conservation by P. G. Quilty (auth.), Dr. K. R. Kerry, Professor Dr. G. Hempel (eds.)

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