Determining the Suitability of Functional Landscapes and Wildlife Corridors Utilizing Conservation GIS Methods in Denton County, Texas

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ProQuest, 2007 - 145 pages
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Denton County's unique cultural and natural landscape has undergone dramatic transformations during the past two centuries due to agricultural, urban and suburban processes which accelerated the loss and removal of native habitat and wildlife. This research sought out to identify the remaining natural areas which retain their natural features and support wildlife. Research methodology included fundamental principles of Conservation Planning, Geographical Information Systems, and Habitat Evaluation Procedures for identifying remnant functional landscapes and wildlife corridors. The final results suggest that Denton County's rural landscape retains the functional properties and elements suitable for habitat conservation and wildlife corridors, while also pointing to the fundamental obstacles to conservation posed by continued growth and private landownership.
  

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Contents

LITERATURE REVIEW
3
Level IV Ecoregions
12
STUDY AREA
27
Mammals in Denton County
29
Reptiles and Amphibians in Denton County
30
Denton County Cities and Conservation Areas
31
Open Space
32
Northwest Study Area
35
Biodiversity Species Distribution
73
Slopes
74
RESULTS
75
North Texas LSI
77
Landscape Suitability Index
78
Regional LSI per Ecoregion
79
Denton County LSI
87
Northwest LSI
88

Southwest Study Area
39
METHODOLOGY
40
GIS Regional Flow Chart
47
Regional Land Cover Reclass
48
Indicator Species Occurrence
49
North Texas UrbanRural Interface
50
Distance to Major Parks
51
Distance to Highways
52
Regional Land Cover Proportions
54
Predicted Mountain Lion Occurrence
56
CSAM Land Cover
60
Denton County Land Cover Proportions
61
LSI Model Coefficients and Flow Chart
66
Mountain Lion Corridor Flow Chart
67
Land Cover Reclassification
68
Road Density Reclassification
69
UrbanRural Interface
70
Gas and Oil Well Density
71
Subdivision Density
72
Southwest LSI
89
Open Space LSI
91
Species List for Study Areas
96
Cougar Corridor Analysis
97
Northwest Cougar HSI
98
Southwest Cougar HSI
99
Habitat Units for Study Area
102
Northwest Habitat Corridor CA1
103
Mean HSI Scores
106
Northwest Habitat Corridor FM 2450
109
Northwest Habitat Corridor I35 Near Sanger
110
Northwest Habitat Corridor FM 2164
111
Southwest Habitat Corridor FM 2449
112
Southwest Habitat Corridor FM 156
114
Southwest Habitat Corridor I 35 W
115
Southwest Habitat Corridor Hwy 377
116
Evaluation of Corridor Underpasses
117
CONCLUSIONS AND DISCUSSION
118
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