Ecological Archives C006-113-A1

David Bell, Joakim Hjältén, Christer Nilsson, Dolly Jørgensen, and Therese Johansson. 2015. Forest restoration to attract a putative umbrella species, the white-backed woodpecker, benefited saproxylic beetles. Ecosphere 6:278. http://dx.doi.org/10.1890/es14-00551.1

Appendix A. Relationship between structural and temporal forest variables and beetle community structure (untransformed data).

Table A1. Marginal tests in DistLM performed on untransformed community data for saproxylic beetles. The results reflect to what extent structural and temporal variables, individually, explain patterns in community structure. CWD = coarse woody debris.

Variable

SS (trace)

Pseudo-F

P

% Var

Time since restoration

5572,8

2,51

0,007

0,14

Elevation

3559,0

1,52

0,074

0,09

Canopy_cover

8972,1

4,48

0,001

0,22

Slope

2619,6

1,09

0,321

0,06

Aspect (W)

2174,0

0,89

0,554

0,05

Aspect (NW)

2358,1

0,98

0,433

0,06

Aspect (E)

1775,0

0,72

0,814

0,04

Aspect (SW)

1660,2

0,67

0,933

0,04

Aspect (NE)

4434,5

1,94

0,057

0,11

Aspect (SE)

2511,2

1,04

0,339

0,06

Stand basal area (Pinus sylvestris)

1684,3

0,68

0,869

0,04

Stand basal area (Betula spp.)

2387,2

0,99

0,444

0,06

Stand basal area (Populus tremula)

2122,0

0,87

0,589

0,05

Stand basal area (Alnus spp.)

3855,6

1,66

0,053

0,09

Lying CWD (Picea abies)

3296,8

1,40

0,119

0,08

Lying CWD (Pinus sylvestris)

1389,5

0,56

0,982

0,03

Standing CWD (Picea abies)

1472,6

0,60

0,953

0,04

Standing CWD (Pinus sylvestris)

3531,7

1,51

0,094

0,09

Standing CWD (Betula spp.)

2510,9

1,04

0,355

0,06

Productivity class 1

2838,2

1,19

0,244

0,07

Productivity class 2

3020,5

1,27

0,179

0,07

Productivity class 3

3362,9

1,43

0,103

0,08

Productivity class 4

1844,9

0,75

0,827

0,04

Productivity class 5

2583,9

1,08

0,342

0,06

Productivity class 6

2588,3

1,08

0,325

0,06

Productivity class 7

2041,4

0,84

0,738

0,05

Forest stand size

1344,8

0,54

0,971

0,03

Forest age

2574,3

1,07

0,335

0,06


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