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BBS Physiographic Strata Names
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Source:
Droege, Sam. 1990. The North American Breeding Bird Survey. pages 1-4. in J.R. Sauer and S. Droege, eds. Survey designs and statistical methods for the estimation of avian population trends. USFWS Biological Report 90(1). 160 pp. As modified from --
Bystrak, Danny. 1981. The North American Breeding Bird Survey. pages 34-41. in C.J. Ralph and J.M. Scott, eds. Estimating numbers of terrestrial birds. Studies in Avian Biology No. 6. 630 pp.

(Click here for strata map.)
(Click here for state summary.)

Stratum

Name

Area Km2

 

Stratum

Name

Area Km2

01

Subtropical

18226

 

37

Drift Prairie 

247060

02

Floridian

63636

 

38

Glaciated Missouri Plateau

275586

03

Coastal Flatwoods

157110

 

39

Great Plains Roughlands

369965

04

Upper Coastal Plain

513884

 

40

Black Prairie

147060

05

Mississippi Alluvial Plain

109126

 

53

Edward's Plateau

78516

06

Coastal Prairies

73804

 

54

Rolling Red Plains

114084

07

South Texas Brushlands

86369

 

55

Staked Plains

129818

08

East Texas Prairies 

105115

 

56

Chihuahuan Desert

163419

09

Glaciated Coastal Plains

5825

 

61

Black Hills

14751

10

Northern Piedmont

32820

 

62

Southern Rockies

133649

11

Southern Piedmont

169837

 

63

Fraser Plateau

116550

12

Southern New England

37809

 

64

Central Rockies

423978

13

Ridge and Valley

144262

 

65

Dissected Rockies

177208

14

Highland Rim 

120800

 

66

Sierra Nevada 

56957

15

Lexington Plain

54468

 

67

Cascade Mountains

54750

16

Great Lakes Plain 

181176

 

68

Northern Rockies

697047

17

Driftless Area

59773

 

80

Great Basin Deserts

152983

18

St. Lawrence River Plain

99163

 

81

Mexican Highlands

74592

19

Ozark/Ouachita Plateau

158213

 

82

Sonoran Deserts

109878

20

Great Lakes Transition

108992

 

83

Mojave Desert

86597

21

Cumberland Plateau

52889

 

84

Pinyon/Juniper Woodlands

195587

22

Ohio Hills

76926

 

85

Pitt-Klamath Plateau

69199

23

Blue Ridge Mountains

40059

 

86

Wyoming Basin

122850

24

Allegheny Plateau 

133238

 

87

Intermountain Grasslands

318697

25

Open Boreal Forest 

169844

 

88

Basin and Range

212123

26

Adirondack Mountains

24872

 

89

Columbia Plateau

238601

27

Northern New England

52412

 

90

Southern California Grasslands

35398

28

Northern Spruce/Hardwoods

609324

 

91

Central Valley

55991

29

Closed Boreal Forest

1025965

 

92

California Foothills

79642

30

Aspen Parklands

358734

 

93

Southern Pacific Rainforests

134742

31

Till Plains

201004

 

94

Northern Pacific Rainforests

138246

32

Dissected Till Plains

228855

 

95

Los Angeles Ranges

5470

33

Osage Plain/Cross Timbers

154162

 

96

Southern Alaska Coast

NA

34

High Plains Border

166823

 

98

Willamette Lowlands

12934

35

Rolling Red Prairies

90164

 

99

Tundra

NA

36

High Plains

236133

       


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http://www.pwrc.usgs.gov/bbs
Contact: Keith_Pardieck
email: Keith_Pardieck@usgs.gov
Last Modified: 10/31/01
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