What were the first/early studies that used the 97% threshold to delimit bacterial OTUS?

Gavin Guanyang Zhang 张冠阳 @Gavin_Zhang_zhangguanyang

06 June 2016 0 6K Report

97% distance identity is a commonly used threshold for establishing OTUs (operational taxonomic units) for bacteria. I wonder what is the history of this method and who were the first to propose or use it? Any suggestions of names or references are appreciated.

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