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https://hdl.handle.net/20.500.14094/90008801
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2024-04-24
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90008801 (fulltext)
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メタデータID
90008801
アクセス権
open access
出版タイプ
Version of Record
タイトル
The structure and formation of giant Marimo (Aegagropila linnaei) in Lake Akan, Japan
著者
Nakayama, Keisuke ; Komai, Katsuaki ; Ogata, Keisuke ; Yamada, Toshiro ; Sato, Yukinobu ; Sano, Fumiya ; Horii, Shintarou ; Somiya, Yuichiro ; Kumamoto, Etsuko ; Oyama, Yoichi
著者ID
A0044
研究者ID
1000060271649
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c5a2042377aa64d0520e17560c007669
著者名
Nakayama, Keisuke
中山, 恵介
ナカヤマ, ケイスケ
所属機関名
工学研究科
著者名
Komai, Katsuaki
著者名
Ogata, Keisuke
著者名
Yamada, Toshiro
著者名
Sato, Yukinobu
著者名
Sano, Fumiya
著者名
Horii, Shintarou
著者名
Somiya, Yuichiro
著者名
Kumamoto, Etsuko
著者名
Oyama, Yoichi
収録物名
Scientific Reports
巻(号)
11(1)
ページ
22017
出版者
Nature Portfolio
刊行日
2021-11-10
公開日
2021-11-24
抄録
Aegagropila linnaei is a freshwater green alga, which at one time was distributed widely in the northern hemisphere. The aggregate often forms beautiful spherical shapes known as “lake balls” or “Marimo”. The population of Marimo has been rapidly decreasing worldwide, and today the large Marimo, with a diameter of more than 12 cm, exit only in Lake Akan in Japan. However, how Marimo grow and maintain their unique spherical shape in natural habitats remains unsolved. Here we show that Marimo are “polished”into spheres by the rotation induced by wind waves. Such a process enhances the water exchange between the interior and exterior of the Marimo, thereby recycling nutrients for growth. Our results provide an intriguing model of a physical environment interacting with biological processes in a self-sustaining ecosystem. We also demonstrate that Marimo have a spherical annual ring structure, and their growth rate is associated with ice cover. The balance between the ecology of Marimo and the water environment in Lake Akan is highly vulnerable and at risk of irreversible degradation. We must endeavor to rescue Marimo from the fate of a "canary in the coal mine" of global climate change.
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工学研究科
学術雑誌論文
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© The Author(s) 2021. Open Access
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
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資源タイプ
journal article
言語
English (英語)
eISSN
2045-2322
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関連情報
DOI
https://doi.org/10.1038/s41598-021-01028-5
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