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タイトル: 河床表層の鉛直構造の変動を考慮した付着藻類現存量の変動予測
その他のタイトル: Predicting Algal Biomass Focusing on Vertical Riverbed Structure
著者: 宮川, 幸雄  KAKEN_name
角, 哲也  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-1423-7477 (unconfirmed)
竹門, 康弘  KAKEN_name
著者名の別形: MIYAGAWA, Yukio
SUMI, Tetsuya
TAKEMON, Yasuhiro
キーワード: 付着藻類
河床
露出高
河床埋没度
attached algae
riverbed
exposed height
riverbed covered degree
発行日: Sep-2018
出版者: 京都大学防災研究所
誌名: 京都大学防災研究所年報. B
巻: 61
号: B
開始ページ: 756
終了ページ: 769
抄録: Supplying sediment below dams may change algal biomass on stone surfaces by not only promoting detaching algae but also decreasing exposed stone surface area for algae growth. This study is aiming to predict the algal biomass per unit area. Attached algae growth and detaching rate were measured in the prototype flume to make a prediction model focusing sand height and algal biomass. We also developed a new model to estimate the average height of exposed stones and their distribution. The result showed that the production rate was higher after sediment supply. Especially, the highest rate was recorded in case that the sand height was the just before the stone surface area start to decrease by sediment covering. If sediment will not reduce exposed area, higher production rate can be expected under the increasing sediment supply condition. The estimation of the exposed height or the riverbed covered degree should contribute to evaluate the effects of sediment supply on the habitat of attached algae.
URI: http://hdl.handle.net/2433/235892
関連リンク: http://www.dpri.kyoto-u.ac.jp/publications/nenpo/
出現コレクション:Vol.61 B

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