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

初级生产者在萨罗马湖泻湖溶解碳和氮的周转过程中的作用。

• 批准号: 09660209
• 负责人: HATTORI Hiroshi
• 金额: $ 2.11万
• 依托单位: Hokkaido Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09660209/
• 关键词: Phytoplankton; Ice algae; 13C method; Primary procuction; Saroma-ko Lagoon; 微小動物食物網; 希釈法; カイアシ類摂餌

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.

在1997年9月至1999年3月期间，每月观测一次浮游植物和冰藻初级生产量的季节变化，以估算Saroma-Ko泻湖溶解碳和氮素的转化过程。通过在STN的24小时ィイD113ィエD1C原位实验来估计翻转的孔洞。22在湖的中央部分。在69天的冰融季中，冰层中冰藻的产量估计为13、110和345mgc mィイd1-2ィエd1。其他季节(396d)的水柱生产量估计为187,960mgmィイd1-2ィエd1。冬季冰藻生产量占总初级生产量的7%，估计为201,415mgmィイd1-2ィエd1yィイd1-1ィエd1。该湖的有效面积为149.2千米ィイd12ィエd1。这表明，初级污染者在一年内将湖中30吨溶解碳转化为颗粒状有机碳。此外，当C：N比估计为6或7时，初级生产者将4-5吨溶解氮转移到颗粒中。

项目成果

Taguchi, S., H. Saito, H. Hattori and K. Shirasawa: "Vertical flux of ice algal cells during the ice melting and breaking periods in Saroma Ko Lagoon, Hokkaido, Japan"Proc. NIPR Symp. Polar Biol.. 10. 56-65 (1997)

Taguchi, S., H. Saito, H. Hattori 和 K. Shirasawa：“日本北海道 Saroma Ko 泻湖冰融化和破裂期间冰藻细胞的垂直通量”Proc。

Saito, H. and H. Hattori: "Diel vertical migration and feeding rhythm of copepods under sea ice in the lagoon saroma-ko, Hokkaido, Japan"J. Mar. Syst.. 11. 191-203 (1997)

Saito, H. 和 H. Hattori：“日本北海道佐吕间湖泻湖海冰下桡足类的昼夜垂直迁移和摄食节律”J.

Saito,H.and H.Hattori: "Diel vartical migration of the marine cladoceran Podon leuckarti : Variations with reproductive stage"J.Oceanogr.. 56. 153-160 (2000)

Saito, H. 和 H. Hattori：“海洋枝角类 Podon leuckarti 的昼夜迁徙：随生殖阶段的变化”J.Oceanogr.. 56. 153-160 (2000)

Hattori,H., A. Tanimura and M. Fukuchi: "Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86)."Polar Biosci.. 12. 15-25 (1999)

Hattori,H.、A. Tanimura 和 M. Fukuchi：“夏季南大洋印度区浮游植物叶绿素大小的垂直分布（1985/86）。”Polar Biosci.. 12. 15-25 (1999)

Saito,H. and H.Hattori: "Diel vertical migration of the marine cladoceran Podon leuckarti: Variations with reproductive stage."J.Oceanogr. 56(2). 153-160 (2000)

齐藤，H.