Ecological Archives A015-063-A2

Hans Jacquemyn, Rein Brys, and Michael G. Neubert. 2005. Fire increases invasive spread of Molinia caerulea mainly through changes in demographic parameters. Ecological Applications 15:2097–2108.

Appendix B. Elasticity values of averaged population projection matrices of four sites in burned and four sites in unburned heathland.

 

Stage at time t

Stage at time t+1

Burned

 

Unburned

Sdl

J

R1

R2

R3

 

Sdl

J

R1

R2

R3

Site 1

                     

Sdl

0

0

6.532

5.805

47.867

 

0

0

0.817

4.500

3.967

J

0.828

0.018

0

0

0

 

0.434

0.784

0

0

0

R1

0.032

0.634

0.460

0

0

 

0

0.104

0.500

0.333

0

R2

0

0

0.540

0.759

0

 

0

0

0.500

0.333

0

R3

0

0

0

0.241

1.000

 

0

0

0

0.333

1.000

Site 2

                     

Sdl

0

0

1.693

3.147

13.885

 

0

0

0.207

1.960

7.000

J

0.797

0.069

0

0

0

 

0.592

0.418

0

0

0

R1

0.032

0.520

0.140

0

0

 

0.040

0.407

0.829

0.233

0

R2

0

0.031

0.598

0.318

0

 

0

0.028

0.097

0.617

0.111

R3

0

0

0.105

0.645

1.000

 

0

0

0

0.067

0.889

Site 3

                     

Sdl

0

0

4.031

21.650

97.850

 

0

0

0.418

4.620

5.785

J

0.759

0.018

0.000

0

0

 

0.515

0.453

0

0

0

R1

0.045

0.918

0.469

0

0

 

0

0.313

0.754

0

0

R2

0

0

0.476

0.556

0

 

0

0

0.108

0.777

0

R3

0

0

0.016

0.444

1.000

 

0

0

0

0.223

1.000

Site 4

                     

Sdl

0

0

13.766

39.300

50.133

 

0

0

0.352

5.583

8.700

J

0.813

0.059

0

0

0

 

0.432

0.503

0

0

0

R1

0.006

0.555

0.454

0

0

 

0

0.375

0.831

0

0

R2

0

0

0.541

0.333

0

 

0

0

0.123

0.722

0

R3

0

0

0

0.667

1.000

 

0

0

0

0.278

1.000



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