Ecological Archives A016-039-A2

Mary Ann Cunningham and Douglas H. Johnson. 2006. Proximate and landscape factors influence grassland bird distributions. Ecological Applications 16:1062–1075.

Appendix B. Summary of scales for which models are competitive for different species.

TABLE B1. Competitive proximate, landscape, and combined models: ΔAIC for best models at proximate and landscape scales is shown. Competitive models, here defined as ΔAIC < 3, are showns in bold typeface. For combined models, an "x" indicates scales at which a combined model had ΔAIC < 3.

Species

ΔAIC of best model

Scales (in m) with competitive combined models

Proximate

Landscape
 

 

  

200

400

800

1200

1600

Mallard (2002)

0.0

16.7

x

x

x

x

x

Mallard (2003)

0.0

6.8

x

x

x

x

x

Blue-winged Teal

0.8

14.1

x

x

x

x

x

Killdeer

2.4

21.2

x

x

x

x

x

Upland Sandpiper

3.8

12.1

x

x

   

x

Marbled Godwit (2002)

14.0

0.0

 

x

     

Marbled Godwit (2003)

13.8

0.0

   

x

   

Wilson’s Snipe

10.2

9.9

      

x

x

Wilson’s Phalarope

22.5

26.9

        

x

Sedge Wren

1.4

13.6

x

   

x

x

Marsh Wren (2002)

7.2

40.5

  

x

x

x

x

Marsh Wren (2003)

14.2

25.8

    

x

x

x

Common Yellowthroat

0.6

158.1

x

x

x

x

x

Clay-colored Sparrow

1.6

146.2

  

x

x

x

x

Field Sparrow

77.7

57.5

      

x

x

Vesper Sparrow (2002)

8.0

6.1

  

x

x

x

x

Vesper Sparrow (2003)

7.6

2.6

x

x

x

x

x

Savannah Sparrow

61.7

58.5

    

x

x

 

Grasshopper Sparrow

18.7

125.6

        

x

Bobolink (2002)

0.1

0.1

x

x

x

x

x

Bobolink (2003)

1.5

10.2

    

x

x

x

Red-winged Blackbird

27.0

155.5

  

x

   

x

Western Meadowlark (2002)

14.7

0.4

x

x

     

Western Meadowlark (2003)

28.8

6.2

x

       

Brown-headed Cowbird (m) (2002)

5.4

7.9

    

x

x

x

Brown-headed Cowbird (m) (2003)

5.8

12.3

        

x

Brown-headed Cowbird (f) (2002)

1.4

2.7

x

x

x

x

x

Brown-headed Cowbird (f) (2003)

15.3

6.5

        

x


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