Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica

Genki I. Matsumoto, Eisuke Honda, Koji Seto, Yukinori Tani, Takahiro Watanabe, Shuji Ohtani, Kaoru Kashima, Toshio Nakamura, Satoshi Imura

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

We studied Holocene paleolimnological changes as a part of studies of global change in Lake Oyako-ike in the Soya Kaigan of Lützow-Holm Bay region in East Antarctica, inferred from organic components and microscopic observation of microalgae and cyanobacteria in a sediment core (Ok4C-01, core length 135 cm), along with sedimentary facies and accelerator mass spectrometry (AMS) 14C dating. The Ok4C-01 core was composed mainly of silt and fine sand containing laminae between 135 and 65.5 cm, overlain by cyanobacterial mud between 65.5 and 0 cm. The mean sedimentation rate and crustal uplift rate were estimated to be 0.69 mm/y and 2.2 mm/y, respectively. The crustal uplift rate of Lake Oyako-ike basin is similar to those of present uplift rates but is somewhat greater than those estimated in the Lambert Glacier region, East Antarctica. The low biological production with diatoms in coastal marine environments (135-74.75 cm, ca. 2170-1300 cal BP) changes into green sulfur bacteria in stratified saline lake environments (74.75-60.95 cm, ca.1300-1100 cal BP), and then high biological production with cyanobacteria and green algae in freshwater environments (60.95-0 cm, ca.1100-220 cal BP). The ongoing retreat of glaciers and ongoing isostatic uplift during the mid-Holocene Hypsithermal (4000-2000 years ago) and thereafter are the main reasons for this isolation, whereas eustatic sea level change is believed to have played only a minor role.

元の言語英語
ページ(範囲)105-112
ページ数8
ジャーナルInland Waters
4
発行部数2
DOI
出版物ステータス出版済み - 2014

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Antarctica
biological production
uplift
Holocene
glaciers
lakes
Cyanobacteria
lake
cyanobacterium
glacier
Bacillariophyceae
global change
microalgae
marine environment
silt
sea level
Chlorophyta
freshwater environment
lacustrine environment
Hypsithermal

All Science Journal Classification (ASJC) codes

  • Aquatic Science
  • Water Science and Technology

これを引用

Matsumoto, G. I., Honda, E., Seto, K., Tani, Y., Watanabe, T., Ohtani, S., ... Imura, S. (2014). Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica. Inland Waters, 4(2), 105-112. https://doi.org/10.5268/IW-4.2.679

Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica. / Matsumoto, Genki I.; Honda, Eisuke; Seto, Koji; Tani, Yukinori; Watanabe, Takahiro; Ohtani, Shuji; Kashima, Kaoru; Nakamura, Toshio; Imura, Satoshi.

:: Inland Waters, 巻 4, 番号 2, 2014, p. 105-112.

研究成果: ジャーナルへの寄稿記事

Matsumoto, GI, Honda, E, Seto, K, Tani, Y, Watanabe, T, Ohtani, S, Kashima, K, Nakamura, T & Imura, S 2014, 'Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica', Inland Waters, 巻. 4, 番号 2, pp. 105-112. https://doi.org/10.5268/IW-4.2.679
Matsumoto GI, Honda E, Seto K, Tani Y, Watanabe T, Ohtani S その他. Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica. Inland Waters. 2014;4(2):105-112. https://doi.org/10.5268/IW-4.2.679
Matsumoto, Genki I. ; Honda, Eisuke ; Seto, Koji ; Tani, Yukinori ; Watanabe, Takahiro ; Ohtani, Shuji ; Kashima, Kaoru ; Nakamura, Toshio ; Imura, Satoshi. / Holocene paleolimnological changes of Lake Oyako-ike in the Soya Kaigan of East Antarctica. :: Inland Waters. 2014 ; 巻 4, 番号 2. pp. 105-112.
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