底付近の境界層が付着藻類の生長に及ぼす影響についての実験的研究 Effects of Boundary Layer near the Substratum on the Periphyton Growth : an Experimental Study

この論文にアクセスする

この論文をさがす

著者

抄録

Sufficient nutrient supply is one of the key factors for the periphyton growth. The formation of the viscous sublayer near the substratum, however, extremely hampers the nutrient transport through the layer with its low diffusivity. Under two different velocities in a laboratory flume, the transition of Periphyton biomass and species were measured, together with light and nutrient conditions. A higher amount of biomass, mostly <i>Navicula</i> in both currents, occurred in the fast current than in the slow current, although nutrient concentrations in an upper layer and light conditions were almost the same. The estimation of the nutrient diffusion rate indicates that the absorbed amount by the periphyton mat is almost equal to the quantity transported by diffusion. Thus, with its higher diffusion rate, the higher biomass of periphyton occurred in the fast current. This result implies that, under the nutrient limited condition, the periphyton growth may be regulated by the nutrient diffusion rate in the viscous sublayer rather than the absolute concentration in the upper layer.

収録刊行物

  • 水環境学会誌 = Journal of Japan Society on Water Environment

    水環境学会誌 = Journal of Japan Society on Water Environment 24(6), 376-381, 2001-06-10

    Japan Society on Water Environment

参考文献:  21件中 1-21件 を表示

各種コード

  • NII論文ID(NAID)
    10008005062
  • NII書誌ID(NCID)
    AN10372439
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09168958
  • NDL 記事登録ID
    5806974
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL 請求記号
    Z16-1045
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ