河床付着性藻類群の繁茂動態のモデル化とその実河道への適用
キーワード:
Attached algae,
riffle-pool structure,
sediment transport,
ash-free weight,
logistic equation
2003 年 9 巻 p. 91-96
詳細
2003 年 9 巻 p. 91-96
It is important to grasp dynamic condition of growing attached algae adequately because it can feed the other species in river, from the viewpoint of river ecosystem conservation.
In the present study, we have discussed on the application of logistic equation to evaluate the change of algae habitat. Firstly, field-data investigation has been conducted in the middle reach of the Yahagi River to estimate the growth rate and the environmental capacity of algae ash -free weight. And then, by using the field-data, the growth-detachment dynamics model for algae has been carried out. The simulation has demonstrated that the nuisance growth of algae is caused by restricted sediment transport.
