habitat suitability index models: eastern wild turkey - USGS National ...

Variable (definition)
Percent canopy closure of
soft mast producing trees
[the percent of the
ground surface that is
shaded by the vertical
projection of the canopies
of trees that produce seeds
encased in a pulpy mass
(e.g., cherry, hawthorn,
etc.)].
Percent shrub crown
cover [the percent of
the ground surface
that is shaded by a
vertical projection
of the canopies of
woody vegetation
~ 5.0 m (16.4 ft) tall].
Percent of shrub crown
cover comprised of soft
mast producing shrubs
(the relative percent
of the amount of soft
mast producing shrubs
compared to all shrubs,
based on crown cover).
Type of crop (the
present or last crop
grown. Categories are:
corn or soybeans; other
grains; and other crops).
Overwinter crop management
(an evaluation of
the winter availability
of agricultural crops
based on management.
Categories are: > 5% of
crop left unharvested;
1 to 5% of crop left
unharvested; crop
harvested, spring plowed;
crop harvested, fall
plowed) .
Cover types
DFW, EF,OF, ETS,
DTS
DFW,EF,DF,ETS,
DTS,ES,DS,ESS,
DSS
DFW,EF,DF,ETS,
DTS,ES,DS,ESS,
DSS
C
C
Suggested technique
Line intercept
Line intercept,
quadrat
Line intercept,
quadrat
Observation, local
data
Observation, local
data
Figure 8.
(continued).
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