Current weed invasions have been loosely classified as , "new", ie either not seen previously on this site, or recent developments of old invasions; "ongoing" ie invasions by weed species that were observed and/or controlled somewhere on the site since 1997-99
and "historic" - a few 1997-99 observations of significant weeds present in 1997-2000 (More historic observations may be uploaded if time permits)
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