@article{oai:nipr.repo.nii.ac.jp:00010105, author = {Ueno, Takeshi and Osono, Takashi and Kanda, Hiroshi and Ueno, Takeshi and Osono, Takashi and Kanda, Hiroshi}, issue = {2}, journal = {Polar science, Polar science}, month = {Sep}, note = {We examined and compared the contents of organic chemical components (lignin-like compounds, total carbohydrates and extractives), carbon and nutrients (nitrogen, phosphorus, potassium, calcium, magnesium) among the mosses Calliergon giganteum, Hylocomium splendens, Racomitrium lanuginosum, and among three populations of H. splendens collected from habitats in contrasting water regimes in the Canadian high-arctic tundra. C:N:P ratios were analyzed among and within moss species. Mosses from hydric habitats had lower total carbohydrate and higher nutrients contents than did mosses from drier habitats; however, we found no intraspecific variations in nitrogen and calcium contents in the different populations of H. splendens along water-regime gradients. The contents in lignin-like compounds, extractives and carbon showed no clear trends along water-regime gradients. Mosses from hydric habitats had lower C:N, C:P and N:P ratios than mosses from drier habitats, although we found no intraspecific variations in C:N ratios in H. splendens along water-regime gradients. These results suggest that chemical properties of mosses, especially nutrient contents, are strongly correlated with water availability in high-Arctic tundra., 高緯度北極カナダ・エルズミア島において、生育地の水分条件がコケ植物の化学特性に及ぼす影響を調査するために、水分条件の異なる場所に生育する3種類のコケ植物(オオササバゴケ,イワダレゴケ,シモフリゴケ)とイワダレゴケにおける3つの個体群の化学特性を比較した。化学特性は,コケ植物配偶体の緑色部に含まれる有機炭素化合物量(リグニン様物質,全炭水化物,アルコール・ベンゼン抽出物,炭素)と栄養塩量(窒素,リン,カリウム,カルシウム,マグネシウム)とした。その結果、生育地の水分条件はコケ植物の化学特性に大きな影響を与えることが示され、湿潤な環境に生育するコケ植物ほど、全炭水化物含量が低く、栄養塩含量が高いことが分かった。また、栄養塩の化学量比が生育地の水分条件の指標となり得ることも示唆された。}, pages = {134--138}, title = {Inter- and intraspecific variations of the chemical properties of high-Arctic mosses along water-regime gradients}, volume = {3}, year = {2009} }