Phytoplankton Production in Char Lake, a Natural Polar Lake, and in Meretta Lake, a Polluted Polar Lake, Cornwallis Island, Northwest Territories
Phytoplankton Production in Char Lake, a Natural Polar Lake, and in Meretta Lake, a Polluted Polar Lake, Cornwallis Island, Northwest Territories
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西北地区康沃利斯岛天然极地湖查尔湖和受污染的极地湖梅雷塔湖的浮游植物生产
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
H. Welch
中科院分区：
文献类型：
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作者：
J. Kalff;H. Welch
超贫营养的查尔湖和污染的梅雷塔湖燕麦的浮游植物生产。北纬74°42′;长。94°50′W），在1969年至1972年期间进行了研究。查尔湖的浮游植物产量约为4.1 g C m−2 yr−1，使其成为有记录以来最贫营养的湖泊。 光合作用实际上发生在太阳出现在地平线上的整个9个月。 最大光合作用的深度，低光利用效率，和最佳光通量的变化导致更恒定的生产率比建议的光输入，这是重要的影响量的积雪。附近被污水污染的梅雷塔湖的浮游植物平均为11.3 g C m−2 yr−1，叶绿素浓度比查尔湖高20倍。 养分缺乏，特别是磷，几乎可以肯定是负责低效率的光利用率，并导致低产量的查尔湖。在这两个湖泊中，底栖生物生产都具有重大意义。
Phytoplankton production of ultraoligotrophic Char Lake and polluted Meretta Lake Oat. 74°42′N; long. 94°50′W) were studied between 1969 and 1972. Phytoplankton production in Char Lake is approximately 4.1 g C m−2 yr−1, making it the most oligotrophic lake on record. Photosynthesis takes place virtually the whole 9 mo the sun comes above the horizon. Changes in depth of maximum photosynthesis, in efficiency of low light utilization, and in optimal light flux resulted in a much more constant production rate than suggested by the light input, which is importantly affected by amount of snow cover. Phytoplankton in nearby sewage-polluted Meretta Lake averages 11.3 g C m−2 yr−1, and chlorophyll concentrations are 20 times higher than in Char Lake. Nutrient deficiencies, especially of phosphorus, are almost certainly responsible for the low efficiency of light utilization and resulting low production in Char Lake. Benthic production is of major significance in both lakes.