Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86)

During the icebreaker SHIRASE cruise of the 27th Japanese Antarctic Research Expedition (JARE-27; 1985/86), vertical profiles of phytoplankton chlorophyll a concentration in the upper 200m of the water column were observed at 12 stations in the Southern Ocean and at 3 stations in the subtropical water from December 1985 to March 1986. High phytoplankton chlorophyll standing crops (ca. 370mg m^ in December and 330mg m^ in February) were observed in Breid Bay, Antarctica. In other stations of the Antarctic Ocean, the standing crops were less than 52mg m^. Size fractionation studies revealed that net-phytoplankton (>20μm) was the dominant fraction of total chlorophyll a during the summer bloom in Breid Bay. In Antarctic waters, the high contributions of the net-phytoplankton fraction corresponded to high total biomass. And also, contribution of the net-phytoplankton to the total phytoplankton was supposed to be controlled by the length of the ice-free period. Considering the high phytoplankton growth rates under the nutrient rich condition, duration under optimum light condition and water stability appear to be important factors affecting the phytoplankton crops in the Antarctic Ocean in summer

Development of cross-sectional classes to express a secure house living space using various construction techniques

In this research, we aim to foster the ability to propose a sustainable living environment in a three-dimensional space trying to organize a lesson in order to clarify the image of the child in the living space: "house". First, we revealed the change of the image of the "house" of the fourth graders through the model making: the children have become conscious of their own life on the durability of the house, or the attachment to the ground through the experience of model making. In addition, we found their interest to the exterior space