Establishment of Stable Granular Symbiosis of Microalgae and Bacteria with Well Separated Oxygenic Photosynthesis and N2 Fixation in Its Layered Structure

(1)利用NIES1726和1728的混合固氮剂建立了以蓝藻为主的颗粒固氮体系，考察了有无氮气循环时对碳氮化合物的利用情况。(2)通过对几乎不含可溶性氮和有机碳的养殖水体的处理，评价了藻类细菌颗粒的稳定性和性能。(3)在本财政年度的国际会议上发表了6篇相关的高质量文章和15篇报告(两次主题演讲)。

(1) The cyanobacteria dominated granule system was established using the mixture of NIES1726 and 1728 for nitrogen fixation, and the utilization of carbon and nitrogen species with or without N2 recirculation was examined.(2) The stability and performance of algal-bacterial granules were assessed by treating aquaculture water with almost no soluble N and organic C.(3) Six related high-quality articles were published with 15 reports (two keynote speeches)in international conferences during this fiscal year.