下関市で建設中の人工島周辺における底生動物群集の変化について : 座標付けとファジイクラスター解析を用いた群集データによる環境影響評価の手法

概要

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In spite of the importance of the macrobenthic community in coastal ecosystems, full agreement on the method for the data analysis has not been achieved yet. For example, various kinds of indices of the similarity between observed communities have been used by different authors without deep consideration, though the selection of the indices has decisive effect on the result. In the present paper, the macrobenthos data around an artificial island under construction in Shimonoseki is analyzed by a new method using the ordination and fuzzy cluster analysis proposed by Shinagawa, and interesting faunal changes are detected, indicating that the new method is very useful. More over, the possibility of the method to go next step of the analysis by using the well known Multivariate analysis that is based on the normal distribution hypothesis is suggested.
2006-08-10