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This report should be cited as: Schroeder, R. L. 1985. Habitat suitability index models: Eastern wild turkey. U.S. Fish Wildl. Servo Biol. Rep. 82(10.106). 33 pp.
PREFACE This document is part of the Habitat Suitability Index (HSI) Model Series [Biological Report 82(10)J which provides habitat information useful for impact assessment and habi tat management. Several types of habitat i nformati on are provided. The Habitat Use Information Section is largely constrained to those data that can be used to derive quantitative relationships between key environmental variables and habitat suitability. This information provides the foundat i on for the HSI model and may be useful in the development of other models more appropriate to specific assessment or evaluation needs. The HSI Model Section documents the habitat model and includes information pertinent to its application. The model synthesizes the habitat use information into a framework. appropriate for field application and is scaled to produce an index value between 0.0 (unsuitable habitat) and 1.0 (optimum habitat). The HSI Model Section includes information about the geographic range and seasonal application of the model, its current verification status, and a list of the model variables with recommended measurement techniques for each variable. The model is a formalized synthesis of biological and habitat information published in the scientific literature and may include unpublished information reflecting the opinions of identified experts. Habitat information about wildl ife species frequently is represented by scattered data sets collected during different seasons and years and from different sites throughout the range of a speci es , The model presents thi s broad data base ina formal, logical, and simplified manner. The assumptions necessary for organizing and synthesi zi ng the speci es-habitat i nformation into the model are di scussed. The model shoul d be regarded as a hypothesi s of speci e s-habt tat re 1ati onships and not as a statement of proven cause and effect re 1ati onshi ps. The mode 1 may have merit in planning wildlife habitat research studies about a species, as well as in providing an estimate of the relative quality of habitat for that species. User feedback concerning model improvements and other suggestions that may increase the utility and effectiveness of this habitat-based approach to fish and wildlife planning are encouraged. Please send suggestions to: Habitat Evaluation Procedures Group Western Energy and Land Use Team U.S. Fish and Wildlife Service 2627 Redwing Road Ft. Collins, CO 80526-2899 iii
Page 1 and 2: BIOLOGICAL REPORT 82(10.106) AUGUST
Page 3 and 4: MODEL EVALUATION FORM Habitat model
Page 5: Biological Report 82(10.106) August
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 34 and 35: Habitat variable Li fe regu isite C
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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