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ID 39884
file
title alternative
Accumulation of Ulva spp. (Chlorophyta) and other seaweed thalli on the shallow sea bottom of Hiroshima Bay (A preliminary survey)
creator
Yoshida, Goro
Uchimura, Masayuki
Hiraoka, Masanori
Terawaki, Toshinobu
Arai, Shogo
subject
アオサ類
グリーンタイド
現存量
広島湾
小型底曳き網
biomass
green tide
Hiroshima Bay
trawl net
Ulva spp.
NDC
Botany
abstract
広島湾奥部の大野瀬戸周辺の砂泥海底域で,小型底曳き網(ナマコ桁網)と潜水により,アオサ類等をはじめとする海藻類の堆積状況を調査した。38種の海藻・海草類が採集されたが,現存量では底曳き網による採集物の64~100%をアオサ類が占めていた。アオサ類は水深5m以浅で最も多く採集され,砂浜・干潟に連続する海底勾配の緩やかな浅海底がアオサ類の増殖帯になっていると考えられた。
abstract
Biomass of Ulva spp. (Chlorophyta) causing ‘green tide’ and other seaweeds accumulated on shallow sea bottom in inner area of Hiroshima Bay was estimated by trawl-net and SCUBA surveys. Thirty-eight species of seaweed and seagrass was sampled, but Ulva spp. was dominant occupying 64-100 % in biomass of all samples. Ulva spp. was sampled most abundantly at the stations shallower than 5 m, and it was indicated that sea bottom with a gentle slope, and located offshore of sandy beaches or tidal-flats offers a suitable condition for Ulva growth.
journal title
Journal of the Graduate School of Biosphere Science, Hiroshima University
volume
Volume 49
start page
31
end page
38
date of issued
2010-12-24
publisher
広島大学大学院生物圏科学研究科
issn
1348-1371
ncid
naid
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Biosphere Science
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