Study on processes of marine biological production within sea ice biota

设计了一个用于海洋生物观测的自动化系泊系统，并将其用于研究Saroma-Ko泻湖海冰生物群内的海洋生物生产过程。这个泻湖的海冰季节性覆盖通常在12月到4月之间。因此，与海冰形成和融化相关的生物过程是本研究的主要目标。在第一年，自动化系统于1994年12月初投入使用。对该系统进行了水温、盐度、水下辐照度和现场荧光强度的观测。同时，对海冰中的细菌群落、冰藻群落和水柱中的浮游生物群落进行了直接观测。第二年初，解冻后的系泊系统于4月恢复。并于1995年12月再次部署。为了覆盖海冰期，我们成功地收集了3个月的时间序列数据。从直接观测中获得的样本目前正在处理中。这些观测将提供有关海冰生物群内生物生产过程的基本信息。

An automated moored system for marine biological observation was designed and applied for studying processes of marine biological production within sea ice biota in Saroma-Ko lagoon. Seasonal coverage of sea ice in this lagoon is usually between December and April. Therefore, the biological processes related with the sea ice forming and thawing are main objective of the present study.During the first year, the automated system was deployed in early December, 1994. The system was probramed to observe water temperature, salinity, underwater irradiance and in-site fluorometric intensity. Concurrently, the direct observations on bacteria community and ice algae within sea ice as well as plankton community in water column were carried out.In the beginning of the second year, the moored system was recovered in April after ice thawing. And it was deployed again in December, 1995. A time series data over 3 months has been collected successfully for covering the sea ice period. Samples obtained from the direct observation are now under processing. These observation will give fundamental information on the biological production processes within the sea ice biota.