Ecological Archives E096-149-A6

Joseph A. LaManna, Amy B. Hemenway, Vanna Boccadori, and Thomas E. Martin. 2015. Bird species turnover is related to changing predation risk along a vegetation gradient. Ecology 96:16701680. http://dx.doi.org/10.1890/14-1333.1

Appendix F. Changes in nest predation with both PC axes for bird species.

Table F1. Nest predation analyses for bird species in western Montana, USA. The χ² statistic and corresponding p value from likelihood ratio tests are presented for each PC axis (PCconiferand PCdeciduous), along with standardized effect sizes (standardized regression coefficients ± 1 SE), spatial scale of the relationship (forest stand, nesting territory, or nest-site), sample size of nests (n), and mean daily nest predation rate (DNPR) for each species. Significant effects (p < 0.05) are bolded and marginally significant effects (p < 0.10) are italicized. Bird species are ordered according to effect size of PC axes on density (see Appendix E).

Species

PCconiferχ²

p value

PCconiferEffect Size

PCconifer Effect Size SE

PCdeciduousχ²

p value

PCdeciduous Effect Size

PCdeciduous Effect Size SE

Scale

n

Mean DNPR

House Wren

1.09

0.296

0.484

0.559

0.82

0.365

---

---

Stand

30

0.0015

Western Wood-pewee

3.37

0.066

0.910

0.834

0.27

0.606

---

---

Stand

32

0.0039

Mountain Bluebird

3.35

0.067

0.690

0.364

0.00

0.992

---

---

Stand

28

0.0028

Northern Flicker

5.98

0.014

0.644

0.260

1.00

0.317

---

---

Stand

53

0.0047

Red-naped Sapsucker

2.91

0.088

0.490

0.295

0.21

0.648

---

---

Stand

63

0.0013

Mountain Chickadee

1.87

0.172

0.378

0.261

0.77

0.381

---

---

Stand

48

0.0048

Red-breasted Nuthatch

1.10

0.295

0.131

0.122

0.56

0.453

---

---

Terr.

34

0.0016

Ruby-crowned Kinglet

3.86

0.049

-0.230

0.116

1.78

0.182

---

---

Stand

27

0.0094

Chipping Sparrow

5.14

0.023

-0.468

0.208

0.56

0.453

---

---

Stand

57

0.0178

Dark-eyed Junco

6.56

0.010

0.622

0.256

0.89

0.345

---

---

Terr.

51

0.0315

Yellow-rumped Warbler

3.93

0.047

0.043

0.022

4.95

0.026

-0.086

0.039

Terr.

18

0.0121

Lincoln's Sparrow

0.24

0.626

---

---

6.98

0.008

-0.350

0.147

Stand

42

0.0393

Yellow Warbler

1.96

0.162

---

---

9.19

0.002

-0.389

0.149

Stand

18

0.0409

Dusky Flycatcher

2.97

0.085

0.116

0.070

6.88

0.009

-0.251

0.126

Stand

155

0.0161

Warbling Vireo

1.94

0.164

---

---

5.22

0.022

-0.373

0.167

Stand

153

0.0111

American Robin

1.36

0.244

---

---

5.00

0.025

-0.748

0.312

Stand

258

0.0385


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