礫の転がしによる大型糸状緑藻カワシオグサの剥離実験

Material type: 文書・図像類

Author: 小川, 弘子ほか

Publisher: 愛知工業大学

Publication date: 2005-03-31

Material Format: Digital

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Note (General)：: The large filamentous green alga Cladophora glomerata was experimentally scraped off cobbles by rolling the cobbles by hand along a natural riverbed. ...

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Material Type: 文書・図像類
Title: 礫の転がしによる大型糸状緑藻カワシオグサの剥離実験
Author/Editor: 小川, 弘子
内田, 臣一
Author Heading: 小川, 弘子
内田, 臣一
Publication, Distribution, etc.: 愛知工業大学
Publication Date: 2005-03-31
Publication Date (W3CDTF): 2005-03-31
Alternative Title: Experimental scraping of the large filamentous green alga Cladophora glomerata off cobbles by rolling along a riverbed
Periodical title: 愛知工業大学研究報告. B, 専門関係論文集 = Bulletin of Aichi Institute of Technology. Part B
No. or year of volume/issue: 40
Volume: 40
Pages: 115-120
ISSN (Periodical Title): ISSN : 0387-0812
Text Language Code: jpn
Target Audience: 一般
Note (General): The large filamentous green alga Cladophora glomerata was experimentally scraped off cobbles by rolling the cobbles by hand along a natural riverbed. We estimated standing crop (loss on ignition) of the algae by following methods. The shape of a tuft of the alga was likened to a spindle, and the volume of the tuft was estimated by finding the volume of the spindle using the thickness and the length. In advance we found a regression equation predicting loss on ignition (LOI) of the tuft from the volume (V): LOI (mg) = 0.023758V (mm^3). Therefore, by measuring the thickness and the length of every tuft of the algae on a cobble we estimated the standing crop (loss on ignition) of the algae on the cobble. In the experiment about a half of the standing crop was scraped by every 15m rolling, regardless of initial amount of the standing crop before rolling. It suggests that large standing crop raised probability that algae hit the riverbed, and consequently larger standing crop might be scraped. Densely attached tufts of the algae were slightly less scraped both in the number of tufts and in the standing crop, whereas sparsely attached tufts were slightly more scraped. It suggests that dense tufts tend to be only shorted whereas sparse tufts are cut at the roots. Roundness of cobbles had little effect on scraping the algae. But, after rolling the cobbles long over 20 m, the algae tend to be slightly more scraped on the well rounded cobbles. We did not find any effect of the weight of cobbles on scraping.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/1247
Access Restrictions: 限定公開
Periodical Title (NCID): AN00007801
https://ci.nii.ac.jp/ncid/AN00007801
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 愛知工業大学 : 愛知工業大学学術情報リポジトリ