... -CHARACTERISTICS AND DISTRIBUTIONS OF NITROUS OXIDE-PRODUCING DENITRI-FYING FUNGI IN NATURAL ENVIRONMENTSK. Oishi and T. KusudaDepartment of Civil Engineering, Faculty of Engineering, Kyushu University, ... types of organic matter were supplied, were collected. The final products of fungal denitrification in these soils and sediments were determined, and the distribution of denitrifying fungi in natural ... cultures of fungi. However, the characteristics and distributions of denitrifying fungi in natural environments are unknown. In this study, tea soils, and the sediments of an irrigation pond and...