Audubon Society
National Wildlife Service
Sierra Club
conservationist
conservator
deliverer
economist
economizer
forest ranger
game warden
keeper
lifesaver
preservationist
preserver
ranger
rescuer
safekeeper
salvor
savior
saviour
taxidermist
Spender
depositors
saving
Laver
aver
baver
braver
caver
craver
disfavor
engraver
favor
flavor
graver
laver
paver
quaver
raver
savor
shaver
staver
waiver
waver