An analysis of the difference between day and night average catch wasmade from bottom trawl surveys in autumn 1985 and in 1986. The Bray-Curtis index wasused to measure the dissAnilarity between day and night average catch.
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- 利用1985和1986年秋季底拖网资源调查数据,分析了昼夜平均渔获量的差异,采用Bray-Curtis系数测量其不相似性。