@article{oai:nipr.repo.nii.ac.jp:00010049,
 author = {Hayashi, Kentaro and Cooper, Elisabeth J. and Loonen, Maarten J.J.E. and Kishimoto-Mo, Ayaka W. and Motohka, Takeshi and Uchida, Masaki and Nakatsubo, Takayuki and Hayashi, Kentaro and Cooper, Elisabeth J. and Loonen, Maarten J.J.E. and Kishimoto-Mo, Ayaka W. and Motohka, Takeshi and Uchida, Masaki and Nakatsubo, Takayuki},
 issue = {2},
 journal = {Polar science, Polar science},
 month = {Jun},
 note = {Droppings of Svalbard reindeer (Rangifer tarandus platyrhynchus) could affect the carbon and nitrogen cycles in tundra ecosystems. The aim of this study was to evaluate the potential of reindeer droppings originating from the winter diet for emission and/or absorption of methane (CH4) and nitrous oxide (N2O) in summer. An incubation experiment was conducted over 14 days using reindeer droppings and mineral subsoil collected from a mound near Ny-Alesund, Svalbard, to determine the potential exchanges of CH4and N2O for combinations of two factors, reindeer droppings (presence or absence) and soil moisture (dry, moderate, or wet). A line transect survey was conducted to determine the distribution density of winter droppings at the study site. The incubation experiment showed a weak absorption of CH4 and a weak emission of N2O. Reindeer droppings originating from the winter diet had a negligible effect on the exchange fluxes of both CH4 and N2O. Although the presence of droppings resulted in a short-lasting increase in N2O emissions on day 1 (24 h from the start) for moderate and wet conditions, the emission rates were still very small, up to 3 μg N2O m-2 h-1., スバールバルトナカイ（Rangifer tarandus platyrhynchus）の糞はツンドラ生態系の炭素・窒素循環に影響を及ぼす可能性がある。本研究は、冬季食餌に由来するトナカイ糞が、続く夏季においてどの程度のメタン（CH4）や一酸化二窒素（N2O）を発生あるいは吸収するのかを明らかにすることを目的とした。スバールバル諸島ニーオルスン近郊において採取したトナカイ糞および鉱質土壌を用いて14日間の培養実験を行い、トナカイ糞の有無および土壌水分3条件（乾燥・適湿・過湿）の組み合わせごとにCH4とN2Oの交換フラックスを測定した。総じてCH4では弱い吸収、N2Oでは弱い発生がみられたものの、そのフラックスは小さく、冬季食餌に由来するトナカイ糞が続く夏季のCH4とN2Oの発生や吸収に及ぼす影響は無視しうるものであった。},
 pages = {196--206},
 title = {Potential of Svalbard reindeer winter droppings for emission/absorption of methane and nitrous oxide during summer},
 volume = {8},
 year = {2014}
}