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的混合物进行固氮，建立蓝藻为主的颗粒体系，考察有无N2再循环时碳、氮种的利用情况。(2)通过对几乎不含可溶性氮和有机碳的养殖水体进行处理，评价藻菌颗粒的稳定性和性能。(3)本会计年度在国际会议上发表相关高质量论文6篇，报告15篇（主题演讲2篇）。

(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.