2024-03-28T20:57:29Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00011630
2023-11-13T06:04:58Z
879:1183:1184:1235
南極湖沼底の"コケ坊主" : <14>^C年代測定による成長解析と定着年代の推定
Benthic moss pillars (Koke Bouzu) in Antarctic lakes : analysis of colonization and growth by <14>^C dating
伊村, 智
Imura, Satoshi
高橋, 浩
Takahashi, Hiroshi A.
中村, 俊夫
Nakamura, Toshio
open access
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
本文データは学協会の許諾に基づきCiNiiから複製したものである
Unique pillar-like colonies of aquatic mosses, rising from cyanobacterial and algal mats, have been discovered in some freshwater lakes in the vicinity of Syowa Station, continental Antarctica. These moss pillars (Koke Bouzu) are about 30 cm in diameter and up to 60 cm high and occur at the lake bottoms mainly between 3 and 5 m depth. The primary component is a species of Leptobryum, and Bryum sp. is often found as an associated species. In longitudinal section the pillars reveral whitish layers formed by mineral sediment and dead cyanobacteria. Two samples from the top and base of the moss pillar collected in 1995,were dated by AMS ^<14>C measurement. The Δ^<14>C value of the top part was identical with that of the atmospheric CO_2 at the time of moss pillar sampling (AD1995). This result shows that the top part was not influenced by the reservoir effect (old water effect). The ^<14>C date of base part was measured to be 260+/-90yr BP. It seems that the growth interval between top and base parts of moss pillar was expected to be ca. 300 years. Further detail studies are needed to clarify the colonization process and growth of mosses in Antartic lakes.
タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 1999 (平成11)年度
名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
2000-03
jpn
departmental bulletin paper
VoR
https://doi.org/10.18999/sumrua.11.176
http://hdl.handle.net/2237/13503
https://nagoya.repo.nii.ac.jp/records/11630
10.18999/sumrua.11.176
http://ci.nii.ac.jp/naid/110000475646/
名古屋大学加速器質量分析計業績報告書
11
176
183
https://nagoya.repo.nii.ac.jp/record/11630/files/KJ00000187354.pdf
application/pdf
475.4 kB
2018-02-20