@article{oai:nipr.repo.nii.ac.jp:00001623,
 author = {Wada, Eitarou and Imaizumi, Reiko and Nakaya, Shyu and Torii, Tetsuya},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Aug},
 note = {P(論文), Stable nitrogen isotope ratio in nitrogen-bearing substances from the Dry Valley area, south Victoria Land, was reported. The lowest δ^<15>N value of around -50‰ was found for the epibenthic algae collected from nitrate-rich saline ponds in the Labyrinth. In Lake Vanda, nitrate in its maximum layer (57-59m) was significantly rich in ^<15>N (10.3-13.4‰) as compared with the sedimentary organic nitrogen (-4.6‰). The variation of δ^<15>N seemed to probably result from nitrogen isotope fractionation associated with nitrate assimilation by algae. In the east lobe of Lake Bonney, the δ^<15>N value in nitrate increased with depth from 4.9 to 31.2‰. Dissolved N_2 gas in the west lobe exhibited the highest δ^<15>N value (1.5-2.5‰) among those observed in anoxic layers of various aquatic systems. The latter results from denitrification of nitrate with high δ^<15>N value at temperatures lower than 0℃.},
 pages = {130--139},
 title = {15N abundance in the Dry Valley area, south Victoria Land, Antarctica: Eco-physiological implications of microorganisms},
 volume = {32},
 year = {1984}
}