Role of primary producer in the turn over processes of the dissolved carbon and nitrogen from the Saroma-ko Lagoon.

1997年9月和1999年3月期间，植物和藻类初级生产的季节性变化在一个月内被观察到一次，以估计在Saroma-ko Lagoon停止使用的碳和硝基元素的过程的转变。The turn over porcessees were estimated by the 24-h-D113-D1C in situ experiment at the Stn. 22在湖的中心部分。24-h的就地实验还在同一站进行了观测微生物初级生产的实验。在69天的冰上覆盖季节内，水柱中的冰上和初级生产中的冰上藻类生产估计为13、110和345毫克C m（D1-2）。其他季节中的水柱产量估计为187，960毫克C m-D1-2 m-1冬季的冰藻产量估计为201，415毫克C m-D1-2 m-D1-1 m-湖的严重区域为149.2 km-D12 m-D1。这表明，一个主处理器在一年中在湖面上转换了30吨溶解的碳，直至部分有机碳。莫尔弗，湖泊中4-5吨的分解硝酸盐被主要生产商转移到C粒子时：N比率估计为6或7。

Seasonal changes of phytoplankton and ice algal primary production were observed once in a month during September 1997 and March 1999 in order to estimate the turn over processes of the dissolved carbon and nityrogen in the Saroma-ko Lagoon. The turn over porcessees were estimated by the 24-h ィイD113ィエD1C in situ experiment at the Stn. 22 in the central part of the lake. 24-h in situ experiment of the dilution method was also done at the same station to observe the microbial primary production.During ice carvered season of 69 days, ice algal production in the ice and primary production in the water column were estimated as 13,110 and 345 mgC mィイD1-2ィエD1 respectivey. Production in the water column in the other season (396 days) was estimated as 187,960 mgC mィイD1-2ィエD1 The ice algal production in winter was accounting for 7% of the total primary production in the lake estimated as 201,415 mgC mィイD1-2ィエD1yィイD1-1ィエD1.The sufface area of the lake is 149.2 kmィイD12ィエD1. This reveals that primary procuser turned 30 tons of dissolved carbon in the lake over to partiel organic carbon in a year. Moreover, 4-5 tons of dissolved nitrogen in the lake was transferred by the primary producer to the particles when the C:N ratio was estimated as 6 or 7.