Ecological Archives C006-065-A1

Kristin J. Painter, Cherie J. Westbrook, Britt D. Hall, Nelson J. O'Driscoll, and Timothy D. Jardine. 2015. Effects of in-channel beaver impoundments on mercury bioaccumulation in Rocky Mountain stream food webs. Ecosphere 6:194. http://dx.doi.org/10.1890/es15-00167.1

Appendix A. Tables showing environmental characteristics of streams sampled upstream and downstream of beaver impoundments in the study area and a Pearson correlation matrix of relationships between measured variables at sites upstream from beaver ponds.

Table A1. Environmental characteristics of streams sampled upstream (US) and downstream (DS) of beaver impoundments in the study area.

Site

 

Lat

Long

Stream Width (m)

Canopy Cover (%)

pH

Cond (µS/cm)

Turb (NTU)

Substrate Composition (%)

bedrock

boulder

rock

coble

gravel

sand

mud

BEV 012

US

50.759

-115.264

8.0

0

8.20

203

1.5

0

0

0

40

50

10

0

DS

50.758

-115.263

8.0

0

8.10

206

1.3

0

0

0

40

40

10

10

BEV 002

US

51.318

-114.960

2.0

50

8.20

400

13.3

0

0

10

0

40

0

50

DS

51.317

-114.958

2.0

25

8.30

207

10.3

0

0

20

0

30

20

30

BEV 004

US

50.379

-114.668

3.0

0

8.00

312

0.2

0

0

10

40

10

0

40

DS

50.378

-114.666

3.0

10

8.00

318

0.4

0

0

40

40

0

20

0

BEV 015

US

51.051

-114.924

4.0

30

8.30

299

0.3

0

0

40

40

0

10

10

DS

51.038

-114.868

3.0

10

7.90

305

8.1

0

0

40

10

10

0

40

BEV 028

US

50.526

-114.930

2.0

10

8.10

244

0.1

0

0

30

30

10

10

20

DS

50.523

-114.927

1.5

0

8.20

245

1.1

0

0

30

40

20

0

10

BEV 020

US

50.865

-114.790

3.0

0

7.90

287

0.2

0

0

0

50

15

15

20

DS

50.866

-114.787

2.5

10

8.10

293

1.2

0

0

30

30

30

10

0

BEV 021

US

50.860

-114.795

5.0

10

8.10

298

1.0

0

0

20

30

30

10

10

DS

50.862

-114.794

3.0

20

8.20

299

0.6

0

0

20

30

20

10

10

BEV 019

US

50.803

-114.844

6.0

0

8.10

263

0.1

0

0

0

20

20

20

40

DS

50.804

-114.842

3.0

0

8.20

262

0.9

0

0

10

40

30

10

10

BEV 024

US

51.609

-115.161

2.5

10

8.30

392

2.9

0

0

10

30

30

15

15

DS

51.609

-115.160

2.5

10

8.30

390

3.7

0

0

0

50

20

0

30

BEV 025

US

51.610

-115.176

3.0

0

8.30

402

1.8

0

0

10

30

20

10

30

DS

51.609

-115.170

2.0

0

8.20

406

2.8

0

0

10

30

30

10

20

BEV 027

US

51.531

-115.099

3.0

0

8.10

168

5.4

0

0

10

45

35

10

0

DS

51.531

-115.097

2.5

0

8.40

166

6.0

0

0

10

30

30

10

20

BEV 030

US

50.789

-115.304

3.0

20

7.80

321

0.1

10

0

10

30

10

10

30

DS

50.787

-115.299

4.0

0

7.80

302

1.3

0

0

20

50

10

0

20

BEV 026

US

51.659

-115.292

3.5

0

7.90

354

1.1

0

5

20

30

30

10

5

DS

51.659

-115.290

3.5

0

7.90

355

1.2

0

0

10

40

20

0

30

BEV 022

US

51.478

-114.855

3.0

0

8.00

261

2.0

0

0

0

20

50

15

15

DS

51.480

-114.853

4.0

0

7.80

259

3.9

0

0

0

40

30

15

15

BEV 010

US

50.949

-115.126

9.0

0

7.90

326

0.1

0

0

5

60

20

10

5

DS

50.951

-115.126

3.0

0

7.90

325

0.1

0

0

0

60

20

10

10

 

Table A2. Pearson correlation matrix of relationships between measured variables at sites upstream from beaver ponds. Top values are correlation coefficients (ρ) and bottom italicised values are probabilities (p-values; significant relationships in bold).

 

Water
MeHg

Periphyton
MeHg

Herbivore
MeHg

Predator
MeHg

TP

TN

pH

Conductivity

Turbidity

DOC

Benthic
Chl a

Invertebrate Biomass

Water MeHg

1.00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Periphyton MeHg

0.38

1.00

 

 

 

 

 

 

 

 

 

 

0.165

 

 

 

 

 

 

 

Herbivore MeHg

0.64

0.64

1.00

 

 

 

 

 

 

 

 

 

0.014

0.014

 

 

 

 

 

 

 

Predator MeHg

-0.02

0.82

0.81

1.00

 

 

 

 

 

 

 

 

0.964

0.006

0.014

 

 

 

 

 

 

 

TP

0.53

0.69

0.63

0.46

1.00

 

 

 

 

 

 

 

0.041

0.004

0.016

0.209

 

 

 

 

 

 

 

TN

0.50

0.40

0.56

0.47

0.77

1.00

 

 

 

 

 

 

0.055

0.137

0.039

0.200

0.001

 

 

 

 

 

 

 

pH

0.11

0.23

0.03

0.29

0.62

0.57

1.00

 

 

 

 

 

0.691

0.406

0.921

0.442

0.014

0.027

 

 

 

 

 

 

Conductivity

0.06

-0.22

0.18

0.26

0.02

0.26

0.06

1.00

 

 

 

 

0.834

0.438

0.535

0.502

0.934

0.341

0.830

 

 

 

 

 

Turbidity

0.55

0.44

0.63

0.29

0.81

0.71

0.50

0.05

1.00

 

 

 

0.033

0.098

0.015

0.445

<0.001

0.003

0.061

0.853

 

 

 

 

DOC

0.59

0.64

0.71

0.66

0.86

0.81

0.42

0.22

0.71

1.00

 

 

0.022

0.011

0.004

0.055

<0.001

<0.001

0.124

0.442

0.003

 

 

 

Benthic Chl a

-0.24

-0.09

-0.16

0.23

-0.42

-0.26

-0.18

-0.03

-0.56

-0.41

1.00

 

0.387

0.758

0.594

0.557

0.118

0.358

0.513

0.922

0.029

0.126

 

 

Invertebrate Biomass

0.07

0.30

0.14

0.74

0.09

0.12

0.25

-0.04

0.07

-0.02

0.32

1.00

0.795

0.282

0.643

0.022

0.746

0.679

0.374

0.899

0.810

0.934

0.242

 


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