The computer program VEGAN was developed by the England Field Unit of the Nature Conservancy Council to analyse Phase II grassland survey data. Considerable quantities of such data have been collected in recent years by the NCC and latterly English Nature and there were 43 data sets on VEGAN. In 1992 EN commissioned improvements to the program and upgrading of the existing data sets to a new version of VEGAN (Version 4.0).
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