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

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Habitat variable Li fe regu isite Cover tYpes Percent herbaceous canopy cover I Ioo::--------Summer food/brood DFW,DF,ETS,DTS-- Average height of herbaceous------'~ habitat canopy (summer) ~ Distance to forest or tree Summer food/brood DS,ESS,DSS, I savanna cover types habitat G,F,P/H N ~ Average dbh of hard mast produc- ~ ing trees that are 225.4 cm dbh Number of hard mast producing trees/ha that are ~ 25.4 cm dbh ~----------~/ Fal I, winter, _____ /' food Percent canopy closure of soft mast producing trees sp ri ng DFW, EF, DF, ETS,DTS-- I Percent sh rub crown cove r i Percent of shrub crown cover r Fal I, winter, spring ES,DS,ESS,DSS I comprised of soft mast food producing shrubs I Type of crop Overwinter crop management ------- Fall, winter, spring C I food Distance to a tree dominated----- cover type HSI Percent tree canopy cover I Cover DFW,EF,DF,ETS,DTS Average dbh of overstory trees Percent of forest canopy comp r i sed of eve rg reens------ Figure 7. Relationships between habitat variables, life requisites, cover types, and the HSI for the eastern wild turkey.
Variable (definition) Percent herbaceous canopy cover (the percent of the ground surface that is shaded by a vertical projection of all non-woody vegetation). Average height of herbaceous canopy (summer) (the average vertical distance from the ground surface to the dominant height stratum of the herbaceous vegetative canopy) . Distance to forest or tree savanna cover types (the distance from random points to the nearest edge of a forest or tree savanna cover type). Average dbh of hard mast producing trees that are ~ 25.4 cm (10 inches) dbh [the average diameter of all hard mast producing trees that exceed 25.4 cm (10 inches) diameter at 1.4 m (4.5 ft) above ground]. Number of hard mast producing trees/ha that are ~ 25.4 cm (10 inches) dbh [actual or estimated number of hard mast producing trees per ha that are ~ 25.4 cm (10 inches) diameter at 1.4 m (4.5 ft) above ground]. Cover types DFW,DF,ETS,DTS, DS,ESS,DSS,G,F, P/H DFW,DF,ETS,DTS, DS,ESS,DSS,G,F, P/H DS,ESS,DSS, G,F,P/H,C DFW,EF,DF,ETS, DTS DFW,EF,DF,ETS, DTS Suggested technique Line intercept, quadrat Line intercept, graduated rod Remote sensing Quadrat; Biltmore stick or diameter tape Quadrat Figure 8. Definitions of variables and suggested measurement techniques. 25
Page 1 and 2: BIOLOGICAL REPORT 82(10.106) AUGUST
Page 3 and 4: MODEL EVALUATION FORM Habitat model
Page 5 and 6: Biological Report 82(10.106) August
Page 7: PREFACE This document is part of th
Page 10 and 11: ACKNOWLEDGMENTS William M. Healy, G
Page 12 and 13: (Christisen and Korschgen 1955). Ma
Page 14 and 15: or depressions in the ground (Korsc
Page 16 and 17: Striped skunks (Mephitis mephitis),
Page 18 and 19: Iowa has reintroduced turkeys into
Page 20 and 21: Cover types. This model was develop
Page 22 and 23: ..--l Fig. 1a 1.0 1.0 ::::- ::::- .
Page 24 and 25: The amount of acorn mast produced i
Page 26 and 27: Fig. 3a Fig. 3b 1.0 1.0 \D r-, :::-
Page 28 and 29: in the fall, but plowed in the spri
Page 30 and 31: Figure 5. The relationships between
Page 32 and 33: 0.2 a Fig. 6a 1. a -+---...........
Page 36 and 37: Variable (definition) Percent canop
Page 38 and 39: SOURCES OF OTHER MODELS Williamson
Page 40 and 41: Hamrick, W. J., and J. R. Davis. 19
Page 42 and 43: Pack. J. C., R. P. Burkert. W. K. I
Page 44 and 45: 502n·101 REPORT DOCUMENTATION 11.
Page 46: DEPARTMENT OF THE INTERIOR u.s. FIS

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