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タイトルヨミ
ツヤザキ カンタク デ ミラレル カイルイ イガイグン ニツイテ
日本語以外のタイトル
A Death Shell Assemblage Occurred in Recent Tsuyazaki Tidal Flat
ファイル
言語
日本語
著者
田中 秀典
内容記述(抄録等)
Recent shell remains buried in various depths were investigated in the Recent Tsuyazaki tidal flat in Kyushu, west Japan. Sedimentary features and component of shell remains were examined by 5 sediment samples(50 cm×50 cm×50 cm depth), which were collected during May, 1994.
It becomes evidence that Umbonium moniliferum(gastropod) remains occurred dominantly (approximately 3000 ind. / m^2 on average) in each death shell assemblage on the tidal surface. It is considered that U. moniliferum remains were produced in large quantities at their habitat and produced remains were transported easily to other bottom by the tidal currents or hermit crab etc. This situation was observed in other depth. Especially, U. moniliferum remains condense highly, over 10000 ind. / m^2, at Locs 3 a(sand flat)or 4 b(sandy mud flat)in 40-50 cm depth. A distribution pattern of this high-condensed shell part is similar to that of organism causing bioturbation. It is assumed that this high shell condensed part is accumulated by bioturbation. Furthermore, this part included many Macoma incongrua(bivalve : living mud flat)remains. Owing to this bivalve not transporting a long distance after death, it is assumed that these shells were reflected environment change in the past.
主題
death assemblage
taphonomy
tidal flat
Tsuyazaki
掲載誌名
Laguna : 汽水域研究
7
開始ページ
29
終了ページ
35
ISSN
21852995
発行日
2000-03
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
研究・学術情報本部 エスチュアリー研究センター
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