UNITE QIIME release for eukaryotes

Three sets of QIIME files are released, corresponding to the SHs resulting from clustering at the 3% distance (97% similarity) and 1% distance (99%) threshold levels. The third set of files is the result of a dynamic use of clustering thresholds, such that some SHs are delimited at the 3% distance level, some at the 2.5% distance level, some at the 2% distance level, and so on; these choices were made manually by experts of those particular lineages of fungi. The syntax is the same throughout the three sets of files.