TY - JOUR A1 - Kashiyama, Y. A1 - Ogawa, N. O. A1 - Shiro, M. A1 - Tada, R. A1 - Kitazato, H. A1 - Ohkouchi, N. T1 - Reconstruction of the biogeochemistry and ecology of photoautotrophs based on the nitrogen and carbon isotopic compositions of vanadyl porphyrins from Miocene siliceous sediments JO - Biogeosciences Discuss. J1 - BGD VL - 5 IS - 1 SP - 361 EP - 409 Y1 - 2008/01/30 PB - Copernicus Publications SN - 1810-6277 UR - http://www.biogeosciences-discuss.net/5/361/2008/ L1 - http://www.biogeosciences-discuss.net/5/361/2008/bgd-5-361-2008.pdf ER -