
30 
163 
164 
165 
166 
167 
168 
169 
170 
171 
3.0 Terrestrial Systems 
3.1 Terrestrial subsurface 
172 
173 
174 
175 
176 
177 
Rooted woody vegetation 
Open water 
Floating filamentous algae (non-rooted and rooted) 
Floating non-woody vascular plants (non-rooted) 
Floating non-woody vascular plants (rooted) 
Floating woody vascular plants (non-rooted) 
Floating woody vascular plants (rooted) 
Emergent non-woody vascular plants 
Emergént woody vascular plants 
(to 10 em below apparent surface) 
Ground burrow maker 
Ground burrow user 
Bank burrow maker 
Bank burrow user 
Cave and deep crevice 
Artificial (man-made) structures such as mine shafts and out buildings where interior use 
is similar to that in burrows or caves 
3.2 Terrestrial surface (from 10 cm below apparent surface to 0.5 m above apparent surface) 
178 
179 
180 
181 
182 
183 
184 
185 
186 
187 
188 
189 
190 
191 
192 
193 
194 
195 
Salt playas or flats with hydric soils 
Beaches (mud, sand, or rock) without hydrophytes 
Marshy areas with hydrophytes but not hydric soils 
Bare ground (sand to rubble, up to 305-mm particles) 
Boulder (> 305 mm) covered surface 
Talus — unvegetated 
Talus — vegetated 
Cliff—on ledge near valley floor 
Cliff—in cavity near valley floor 
Cliff—on ledge near mesa or mountain top 
Cliff—in cavity near mesa or mountain top 
Herbaceous litter 
Woody litter (includes shrub branches, tree branches, and stumps) 
Grass and grasslike vegetation 
Forb vegetation 
Supine or dwarf woody vegetation 
Cactus stems and pads 
Artificial (man-made) structures— ground debris and artefacts, bridges, trestles, and 
rooftops where external use is analogous to that of the horizontal and vertical surface 
of natural objects 
3.3 Shrub strata (from 0.5 to 8.0 m above apparent surface) 
196 
197 
198 
199 
200 
201 
202 
203 
204 
205 
Canopy of broad-leaved deciduous shrubs 
Canopy of needle-leaved deciduous shrubs 
Canopy of broad-leaved evergreen shrubs 
Canopy of needle-leaved evergreen shrubs 
Grass and grasslike vegetation (includes bamboo) extending into shrub strata 
Forb vegetation extending into shrub strata 
Cactus stems and pads extending into shrub strata 
Cavity maker —boles within shrub strata 
Cavity user —boles within shrub strata 
Artificial (man-made) structures— extending into shrub strata and used in a manner 
analogous to that of natural vegetation in the shrub strata 
