Compared to FRED 1.0, FRED 2.0 features a total increase of approximately 35,000 root trait observations, collected from over 400 additional sources.
We have added 7950 new rows to FRED since version 1. However, some of the original rows of data from FRED 1.0 have been removed due to redundancy or poor data; for this reason, the highest Row ID (35475) exceeds the total number of rows in the dataset (35211). Data are unique to FRED 2.0 for all rows where “2” appears in column F00001 (Version_FRED version number).
Rows 35446 to 35459 are attributed to FRED 1.0 in column F00001, although these rows are not present in FRED 1.0. This is because the data in these rows were moved from their original position (listed as covariate with a less-specific pool of roots) to new columns for the sake of greater clarity.