PRIMARY PRODUCTION BY DIURNAL VARIATION METHOD IN LAKE SUWA
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概要
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A high gross production of about 40 g O₂.m⁻².d⁻¹ (15 g C.m⁻².d⁻¹) was recorded in an eutrophic lake in summer. It was calculated from the diurnal variations in dissolved oxygen and in total carbon dioxide content in the water column of Lake Suwa. The gross production estimated from in situ method was only 6.0 g O₂.m⁻².d⁻¹. The community enclosed in a bottle in eutrophic lakes gave an extremely low activity in comparison with the activity under the natural condition. The light utilization efficiency of phytoplankton was 2.6 % in Lake Suwa.
- 信州大学理学部の論文
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