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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 名古屋大学加速器質量分析計業績報告書
  4. 24

クック諸島ラロトンガ島カレカレ湿地の花粉分析

https://doi.org/10.18999/sumrua.24.150
https://doi.org/10.18999/sumrua.24.150
e12221f1-86e9-4b89-a163-a7e7fe120d05
名前 / ファイル ライセンス アクション
sumrua_24_150.pdf sumrua_24_150.pdf (5.7 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2014-06-10
タイトル
タイトル クック諸島ラロトンガ島カレカレ湿地の花粉分析
言語 ja
その他のタイトル
その他のタイトル Pollen analysis of Karekare Swamp in Rarotonga, Cook Islands
言語 en
著者 藤木, 利之

× 藤木, 利之

WEKO 83733

ja 藤木, 利之

Search repository
奥野, 充

× 奥野, 充

WEKO 83734

ja 奥野, 充

Search repository
森脇, 広

× 森脇, 広

WEKO 83735

ja 森脇, 広

Search repository
河合, 渓

× 河合, 渓

WEKO 83736

ja 河合, 渓

Search repository
中村, 俊夫

× 中村, 俊夫

WEKO 83737

ja 中村, 俊夫

Search repository
Fujiki, Toshiyuki

× Fujiki, Toshiyuki

WEKO 83738

en Fujiki, Toshiyuki

Search repository
Okuno, Mitsuru

× Okuno, Mitsuru

WEKO 83739

en Okuno, Mitsuru

Search repository
Moriwaki, Hiroshi

× Moriwaki, Hiroshi

WEKO 83740

en Moriwaki, Hiroshi

Search repository
Kawai, Kei

× Kawai, Kei

WEKO 83741

en Kawai, Kei

Search repository
Nakamura, Toshio

× Nakamura, Toshio

WEKO 83742

en Nakamura, Toshio

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 pollen analysis
キーワード
主題Scheme Other
主題 vegetation change
キーワード
主題Scheme Other
主題 human impact
キーワード
主題Scheme Other
主題 human migrations
キーワード
主題Scheme Other
主題 radiocarbon age
抄録
内容記述 Rarotonga is a small island in central Polynesia having the circumference of approximately 32 km. The highest peak is 652 m above sea level and a reef flat extends several hundred meter to the reef that then slopes steeply to deep water surrounds the island. Rarotonga is densely covered with a jungle of ferns, creepers and towering trees. Karekare Swamp in Matabera, located in the northeast of the island is a back swamp. We obtained a 340-cm sediment core at the site of the swamp (21°12' 57.5"S, 159°44' 23.1"W) using a hand auger sampler. The core sediments were divided into three layers, i.e. sandy peat from 0 to 90 cm, undegraded peat from 90 to 250 cm,and dark brown peat from 250 to 340 cm in depth. This paper present results of pollen analysis and AMS radiocarbon (14C) dating on the cored sediments. Eight 14C dates obtained from charcoal and plant fragments indicate that cored sediments cover the past 6000 years. Arecaceae pollen grains are dominant in all of the sediments. While Barringtonia pollen decreases rapidly in the upper part. The appearance ratio of Pandanus pollen is high in the lower part, but it decreases rapidly in upper layers. The appearance ratio of herbaceous plants such as Poaceae and Cyperaceae is remarkable in the upper layers. Considering that Barringtonia and Pandanus grow in the hinterland, decrease in Barringtonia and Pandanus and increases in herbaceous plants suggest a disturbance of the hinterland vegetation. The appearance of Chenopodiaceae pollen of upland weeds and cucurbitaceae and Vigna pollen grains of cultivated plants suggests definite traces of humanity upper 130 cm. The appearance ratios of Pandanus pollen and monolate type fern spore show the increase in 157 to 147 cm. The radiocarbon age indicates about 3700 BP. Judging from the increase of Pandanus pollen and monolate type fern spore, this result suggests human activities. Hence human settled in Rarotonga at about 3700 BP, which is considerably older than that of settlement in eastern Polynesian obtained before.
言語 en
内容記述タイプ Abstract
抄録
内容記述 南太平洋のクック諸島のラロトンガ島は、サンゴ礁に固まれた周囲32km、海抜652mの火山島である。ラロトンガ島北東部に位置するカレカレ湿原において400cmの堆積物を採取し花粉分析を行った。樹木花粉ではサガリバナ属、ヤシ科、タコノキ属花粉が優占し、非樹木花粉ではイネ科、カヤツリグサ科、単条溝型シダ胞子、三条溝型シダ胞子が優占する。サガリバナ属の急減とイネ科・カヤツリグサ科の急増、さらに畑作亜雑草のアカザ科や栽培植物由来と考えられるウリ科やアズキ属などの出現から、約680BPに確実な人類の痕跡が見られた。現在、ゴバンノアシ(サガリバナ属)が沿岸部に優占していることを考慮すると、ゴバンノアシ林が破壊され、その跡にイネ科やカヤツリグサ科、シダ類の草本やP. tectoriusが侵入し、草地が広がったとみられる。また約3700BPあたりでタコノキ属と単条溝シダ胞子の増加がみられる。これを人為的な植生変化と考えると、ポリネシア人がこの時期にラロトンガ島に定住した可能性がある。
言語 ja
内容記述タイプ Abstract
内容記述
内容記述 名古屋大学年代測定総合研究センターシンポジウム報告
言語 ja
内容記述タイプ Other
出版者
言語 ja
出版者 名古屋大学年代測定資料研究センター
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/sumrua.24.150
ID登録タイプ JaLC
書誌情報 ja : 名古屋大学加速器質量分析計業績報告書

巻 24, p. 150-158, 発行日 2013-03
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