Ecological studies on the littoral attaching micro-algae. V. An application of dialysis bags: Measurement of in situ growth rate of naturally attached micro-algae.

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  • 透析膜による付着微小藻の増殖速度現場測定法
  • 透析膜による付着微小藻の増殖速度現場測定法〔英文〕
  • トウセキ マク ニ ヨル フチャク ビショウ ソウ ノ ゾウショク ソクド ゲ

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Abstract

The growth rates of naturally attached micro-algae were determined at both species and whole community levels in Ago Bay during November and December, 1982 by dialysis culture technique under in situ environmental conditions.<br>The growth rate of the whole communities were between 0.25 and 0.66 day-1 at 1m, and mostly decreased with the depth. On the other hand, the growth rate of each species varied greatly, for example, 1.04 day-1 in Nitzschia longissima to -0.07 in Stauroneis sp. at 1m, and mostly decreased with the depth.<br>The depth profiles of the growth rates for the whole community and each species mentioned above seemed to generally show light-saturation near the surface. However, some species presented greater rates in the middle layer (3-7m) than the surface.

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