@article{oai:nipr.repo.nii.ac.jp:00010084,
 author = {Kume, Atsushi and Bekku, Yukiko S. and Hanba, Yuko T. and Nakano, Takashi and Kanda, Hiroshi and Kume, Atsushi and Bekku, Yukiko S. and Hanba, Yuko T. and Nakano, Takashi and Kanda, Hiroshi},
 issue = {2},
 journal = {Polar science, Polar science},
 month = {Jun},
 note = {We measured and compared the δ^<13>C values and nitrogen concentrations within the photosynthetic parts (Np) of phototrophs growing in different successional stages and different soil conditions at Ny-Alesund, Svalbard, Norway. At all study sites, the Np value of vascular plants ranged from 1.0 to 2.2%. The Np value for most moss species was less than 1.0%; values for lichens were about 0.5%. No significant correlation was detected between Np and δ^<13>C; however, different plant species occupied distinct fields on a δ^<13>C-Np plot, with minimal overlap between species. The Np value of Saxifraga oppositifolia, which grew at all of the study sites, ranged from 1.1 to 1.5%. Differences in growth form had no effect on Np. The Np and δ^<13>C values obtained for S. oppositifolia were confined to within a narrow range regardless of site conditions., 氷河が後退し、地表が露出すると、様々な生物が定着して植生遷移が進行し、土壌環境も大幅に改善される。そのような環境変化に植物がどのように対応しているかを調べるために、氷河が後退した後の様々な遷移段階で優占する植物の炭素同位体比（δ13C）と窒素濃度（Np）を調べた。δ13CとNpをそれぞれx, y軸として測定値をプロットすると、各植物の値はx-y平面上の異なった場所に位置し、ほとんど重複しなかった。ムラサキユキノシタは全ての調査地で生育していたが、 Npとδ13Cは狭い範囲に保たれていた。これらの結果は、生理生態学的特性の調節には、形態の違いが重要であることを示唆した。},
 pages = {143--147},
 title = {Nitrogen concentration within Saxifraga oppositifolia in different successional stages on a glacier foreland in the high Arctic},
 volume = {2},
 year = {2008}
}