岡山大学 地球科学研究報告
Published by Okayama University Earth Science Reports Editorial Committee

西表島船浦湾におけるマングローブ干潟の堆積環境 ―堆積物と生物遺骸の保存状況について―

東 裕行 The Graduate School of Natural Science and Technology, Okayama University
三枝 誠行 Department of Biology, Faculity of Science, Okayama University
福田 宏 Faculity of Agriculture, Okayama University
Thumnail ESR_9_9.pdf 1.73 MB
抄録
The distribution of conch shell contained in clastic sediments in the mangrove swamps in the Funaura Bay, Iriomote Island, Okinawa Prefecture was studied. The sediments in the mangrove swamp are mainly composed of up to 90% sands. The sand clasts are inferred to be derived from the sandstone of Miocene Yaeyama Group. The conch shells are richer in the muddy fraction than the sandy fraction. Many Terebralia palustris inhabit the mangrove swamp. However few dead shells were also observed in the sediments. Effect of selective transportation hermit crabs is considered to be the cause of this distribution.
キーワード
conch shell
Mangrove swamp
Terebralia palustris
ISSN
1340-7414
NCID
AN10506284