@article{oai:nipr.repo.nii.ac.jp:00010107,
 author = {Antoniades, Dermot and Veillette, Julie and Martineau, Marie-Josee and Belzile, Claude and Tomkins, Jessica and Pienitz, Reinhard and Lamoureux, Scott and Vincent, Warwick F. and Antoniades, Dermot and Veillette, Julie and Martineau, Marie-Josee and Belzile, Claude and Tomkins, Jessica and Pienitz, Reinhard and Lamoureux, Scott and Vincent, Warwick F.},
 issue = {3},
 journal = {Polar science, Polar science},
 month = {Nov},
 note = {The phototrophic communities in meromictic, perennially ice-covered Lake A, on Ellesmere Island in the Canadian High Arctic, were characterized by pigment analysis using high performance liquid chromatography. Samples were taken to determine the vertical changes down the water column as well as a variation between years. These analyses showed that Lake A had distinct phototrophic communities in its oxic and anoxic layers. The pigment analyses indicated that phototrophic biomass in the upper, oxic waters was dominated by picocyanobacteria, while in the lower, anoxic layer photosynthetic green sulphur bacteria were dominant. Interannual variation in pigment concentrations was related to the penetration of photosynthetically active radiation in the water column, suggesting that light availability may be limiting the net accumulation of photosynthetic bacterial biomass in Lake A. Pigment analysis of the surface sediments indicated that deposition was dominated by the photosynthetic sulphur bacterial contribution. The sedimentary record of bacterial pigments in polar meromictic lakes offers a promising tool for the reconstruction of past changes in ice cover and therefore in climate., カナダ北極、エルズミアの永年氷に覆われた湖沼の光合成生物が検討された。湖沼の氷柱から得られた試料をHPLCによって解析したところ、好気層と嫌気層によって異なった光合成生物群集を示した。上部の好気層の光合成生物のバイオマスはピコシアノバクテリアが、下部の嫌気層及び湖底のセジメントの表面層では光合成硫黄細菌が優占した。極地の氷で覆われた湖底のセジメントは過去の気候変動の復元のために有効であった。},
 pages = {147--161},
 title = {Bacterial dominance of phototrophic communities in a High Arctic lake and its implications for paleoclimate analysis},
 volume = {3},
 year = {2009}
}