About TAKIZAWA Yuko
About Hokkaido Univ., Sapporo, JPN
About TAKIZAWA Yuko
About Japan Agency for Marine-Earth Sci. and Technol., Yokosuka, JPN
About CHIKARAISHI Yoshito
About Hokkaido Univ., Sapporo, JPN
About CHIKARAISHI Yoshito
About Japan Agency for Marine-Earth Sci. and Technol., Yokosuka, JPN
About Researches in Organic Geochemistry
About amino acid
About biology
About seasonal variation
About leaf
About ecosystem
About defoliation
About stable isotope
About isotopic ratio
About nitrogen isotope
About character(group theory)
About photosynthesis
About senile change
About dissimilation
About nutrition index
About trophic level
About food web
About phenology
About nitrogen stable isotope ratio
About Plant ecology
About 葉の老化
About 生物季節学
About 植物
About アミノ酸
About δ15N