Skip to main content

Table 2 General magnitude and direction of influence of variables used in the final Maxent models. The numbers indicate the variables’ relative contributions to the final models expressed as a percent contribution (regular numbers) and permutation importance (italicized numbers)

From: Ecological niche modeling of Aedes mosquito vectors of chikungunya virus in southeastern Senegal

 

Two Year Model

November-Only 2009 Model

November-Only 2010 Model

Ae ae

Ae af

Ae ta

4S

Ae da

Ae fu

Ae lu

Ae ta

Ae vi

Ae da

Ae fu

Ae lu

Ae ta

Ae vi

Distance from any forest patch

 

-

    

-

    

-

-

-

 

26.2

    

27.3

    

33.9

26.4

23.9

 

30.6

    

35.8

    

42.2

39.6

21.1

Distance from medium to large forest patches

cplx

  

cplx

cplx

   

cplx

cplx

    

19.5

  

20.7

22.4

   

17.2

32.7

    

30.8

  

31.9

34.3

   

33.0

48.7

    

Distance from large forest patches

cplx

 

+

cplx

cplx

+

 

+

+

cplx

+

 

+

 

38.8

 

52.2

38.7

29.2

31.9

 

39.3

42.9

35.3

36.2

 

11.6

 

33.7

 

49.4

36.2

30.8

22.8

 

48.7

25.8

25.3

14.6

 

7.2

 

Distance from patch edge

     

-

-

-

-

 

-

-

-

-

     

30.3

53.6

17.7

12.2

 

19.4

24.3

14.9

24.8

     

27.3

35.8

14.1

19.1

 

27.6

19.0

15.4

21.3

Patch size

-

-

 

-

-

 

-

-

 

-

-

-

-

 

24.8

37.5

 

23.3

19.2

 

19.1

32.9

 

32.0

29.8

33.7

14.6

 

23.5

38.3

 

19.5

11.2

 

34.9

28.3

 

26.0

19.8

37.3

10.5

 

Mean NDVI for 2009 and 2010 October-November

  

cplx

 

+

+

  

+

 

+

 

-

-

  

47.8

 

29.2

37.8

  

9.4

 

6.3

 

12.3

33.1

  

50.6

 

23.7

49.9

  

5.8

 

19.8

 

19.2

57.5

Range of NDVI for 2009 and 2010 rainy seasons

          

-

 

-

 
          

8.4

 

8.4

 
          

15.9

 

3.1

 

Precipitation of the wettest quarter

cplx

+

 

cplx

       

+

cplx

 

16.9

36.3

 

17.3

       

1.4

11.8

 

12.0

31.1

 

12.2

       

8.1

5.0

 

Elevation

        

+

     
        

18.3

     
        

16.3

     

Aspect

       

+

      
       

10.1

      
       

8.9

      

Slope

             

+

             

18.3

             

0.0

  1. Abbreviations: Ae ae Ae. aeygpti, Ae af Ae. africanus, Ae da Ae. dalzieli, Ae fu Ae furcifer, Ae lu Ae.luteocephalus, Ae ta Ae. taylori, Ae vi Ae.vittatus; 4S, Four-Species Model (includes the four species, i.e. Ae. dalzieli, Ae. furcifer, Ae. luteocephalus and Ae. vittatus, that were present at all 50 sites)
  2. Notes: + indicates a generally positive relationship and - a generally negative relationship between mosquito site suitability and predictor variables; cplx indicates a complex relationship that shifts between positive and negative as the predictor variable value increases