Data processing
1) Occurrence data on bryophytes and vascular plants were extracted from the literature and included in JG_FLORA.csv. The bibliographic data are listed in JG_LITERATURE.csv.
2) For those species whose Japanese name is recorded in the literature, their scientific name was included in the flora list (JG_FLORA.csv), according to the standard list of the names of Japanese vascular plants, Y-List (http://ylist.info/). For the species for which only the scientific name is recorded in the literature, the scientific name was included in the flora list. For all species included in the flora list, the taxonomically appropriate scientific name and Japanese name were added in JG_SPECIES.csv. During this process, information that seemed erroneous was corrected.
3) The name and location of each grassland in which a flora survey was conducted were listed in the grassland list (JG_GRASSLAND.csv). The name of the grassland was determined based on the original literature. In addition, if the information on the management type (mowing, burning, and grazing) in each grassland was available, it was also recorded. There were 180 grasslands for which this information was available. The location of each grassland was determined according to the description in the literature, and the latitude and longitude of the approximate center of the grassland were recorded (WGS84).
