Titlebook: High Latitude Limnology; Warwick F. Vincent,J. Cynan Ellis-Evans Book 1989 Kluwer Academic Publishers, Dordrecht 1989 Biom.Transport.Veget

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Filamentous green algae in freshwater streams on Signy Island, Antarcticathe rest of the year. Streams usually flow through small, barren catchments and are nutrient poor, though they may be enriched by dense summer populations of seabirds and seals. Temperatures are consistently low. Stream depth is maximal during the spring melt period, declining over the course of the

overture

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Microbial communities in southern Victoria Land streams (Antarctica) II. The effects of low temperats at Fryxell Stream, Taylor Valley, the benthic microbial mats showed strongly positive metabolic responses to increases in temperature well above ambient. Rates of polysaccharide and lipid biosynthesism increased with temperature over the range 0 to 25 °C. Between 0 and 10 °C, Q. values for the cya

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Nitrogen dynamics in two antarctic streamsuts of nitrogen from two study streams near McMurdo Sound were derived mostly from the melting glaciers (ca. 100–200 mg N m .) with some originating from N.-fixation by heterocystous cyanobacteria (max. 939 mg N m . year .). Thirty to fifty per cent of the glacier derived N was dissolved organic N a

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Benthic algal biomass and productivity in high subarctic streams, Alaska scale 1:63 360) — in interior Alaska (64°–65°N) were only about one tenth that reported from streams of temperate North America. Cell densities in these streams, however, were similar to those in comparable temperate streams. Year-round domination of the benthic flora by very tiny diatoms (. spp.)

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