All species lists (groups) can have status, but only some do.
Status can be set for individual species
(eg for plant species you can have status like Native, Alien, Alien
Established, etc
or for birds (R)esident (B)reeding, (W)inter (V)isitor, etc)
and set/overridden during recording (so that an individual species
could have a national
status of rare, but be recorded as common at a particular site)
Please find attached a freshwater fish list (just unzip to your
AditSite folder)
You should be able to find trees in 'BSBI complete', but I can build
you a separate list if needed.
You can also find species lists (and ask other users for ideas) on the
forum at
http://groups.google.com/group/aditsite/files?hl=en