Ecological Archives A025-088-A1

Chi Xu, Milena Holmgren, Egbert H. Van Nes, Fernando T. Maestre, Santiago Soliveres, Miguel Berdugo, Sonia Kfi, Pablo A. Marquet, Sebastian Abades, and Marten Scheffer. 2015. Can we infer plant facilitation from remote sensing? A test across global drylands. Ecological Applications 25:14561462. http://dx.doi.org/10.1890/14-2358.1

Appendix A. Supplementary information on the study sites and Google EarthTM images.

Table A1. Mean annual precipitation data were obtained from WorldClim (www.worldclim.org; Hijmans et al. 2005). Annual aridity index (mean annual precipitation/mean annual potential evapotranspiration) data were obtained from CGIAR-CGSI website (http://www.cgiar-csi.org/data/global-aridity-and-pet-database). Soil types are named following the FAO classification (FAO et al. 1998).

Country

Geographic location (longitude/latitude)

Mean annual
precipitation (mm)

Aridity index

Soil type

Vegetation type

Species richness

Plant co-occurrence measured in situ

Sensor of Google EarthTM image

Image resolution(m)

Accuracy of image classification

(%)

Argentina

63.934°W

38.991°S

363

0.2678

Eutric Fluvisols

Shrubland

27

-

GeoEye-1

0.41

91

Argentina

68.152°W

31.704°S

130

0.0827

Haplic Yermosols

Shrubland

3

-

WorldView-2

0.46

91

Australia

142.550°E

34.223°S

317

0.2180

Calcic Xerosols

Open woodland

18

Y

GeoEye-1

0.41

90

Australia

142.557°E

34.204°S

318

0.2181

Calcic Xerosols

Open woodland

23

Y

GeoEye-1

0.41

90

Australia

142.482°E

34.248°S

312

0.2141

Calcic Xerosols

Open woodland

18

Y

GeoEye-1

0.41

91

Australia

142.544°E

34.109°S

315

0.2164

Calcic Xerosols

Open woodland

15

Y

GeoEye-1

0.41

90

Australia

142.418°E

34.199°S

310

0.2134

Calcic Xerosols

Open woodland

17

Y

GeoEye-1

0.41

90

Australia

142.460°E

33.960°S

312

0.2132

Calcic Xerosols

Open woodland

12

Y

GeoEye-1

0.41

91

Australia

142.568°E

34.106°S

317

0.2174

Calcic Xerosols

Open woodland

16

Y

GeoEye-1

0.41

90

Australia

142.462°E

33.964°S

312

0.2132

Calcic Xerosols

Open woodland

14

Y

WorldView-2

0.46

92

Brasil

42.737°W

11.125°S

644

0.3321

Ferric Luvisols

Shrubland

23

-

GeoEye-1

0.41

91

Chile

71.234°W

32.463°S

305

0.2238

Eutric Fluvisols

Shrubland

5

-

WorldView-2

0.46

90

Chile

70.903°W

33.270°S

395

0.2911

Chromic uvisols

Shrubland

6

-

WorldView-2

0.46

92

Chile

71.364°W

33.119°S

488

0.3983

Chromic Luvisols

Shrubland

4

-

WorldView-2

0.46

90

Chile

71.370°W

32.486°S

344

0.2636

Eutric Regosols

Shrubland

11

-

WorldView-2

0.46

91

Chile

71.346°W

34.107°S

442

0.3286

Eutric Fluvisols

Shrubland

7

-

WorldView-2

0.46

91

Chile

71.251°W

29.750°S

79

0.0761

Eutric Fluvisols

Shrubland

12

Y

WorldView-2

0.46

90

Chile

71.585°W

31.200°S

177

0.1541

Chromic Luvisols

Shrubland

14

Y

GeoEye-1

0.41

92

Kenya

37.530°E

0.575°N

498

0.2564

Orthic Solonchaks

Open woodland

13

-

WorldView-1

0.5

90

Mexico

99.656°W

22.247°N

475

0.2746

Luvic Kastanozems

Shrubland

33

-

GeoEye-1

0.41

90

Mexico

99.895°W

22.648°N

571

0.3211

Lithosols

Shrubland

21

-

WorldView-2

0.46

90

Mexico

101.055°W

23.255°N

371

0.2284

Calcic Kastanozems

Shrubland

6

-

WorldView-2

0.46

91

Morocco

2.373°W

34.159°N

294

0.2279

Xerosols

Grassland

11

Y

GeoEye-1

0.41

90

Morocco

2.193°W

34.431°N

321

0.2519

Chromic Luvisols

Grassland

11

Y

GeoEye-1

0.41

91

Morocco

3.374°W

33.977°N

265

0.1996

Xerosols

Grassland

7

Y

GeoEye-1

0.41

90

Morocco

3.639°W

34.473°N

401

0.3154

Chromic Luvisols

Grassland

7

Y

GeoEye-1

0.41

90

Morocco

1.999°W

34.310°N

377

0.2946

Chromic Luvisols

Grassland

18

Y

GeoEye-1

0.41

90

Morocco

3.414°W

34.633°N

339

0.2707

Calcic Xerosols

Grassland

16

Y

WorldView-1

0.5

91

Morocco

3.465°E

34.626°N

385

0.3109

Calcic Xerosols

Grassland

11

Y

WorldView-1

0.5

91

Peru

71.014°W

16.434°S

417

0.4170

Lithosols

Grassland

6

Y

WorldView-2

0.46

90

Spain

2.230°W

39.049°N

415

0.3510

Calcic Cambisols

Grassland

17

Y

aerial photo

~0.20

93

Spain

3.424°W

40.327°N

439

0.3912

Eutric Fluvisols

Grassland

8

Y

aerial photo

~0.20

92

Spain

3.427°W

40.320°N

436

0.3875

Eutric Fluvisols

Grassland

12

-

aerial photo

~0.20

93

Spain

3.133°W

40.143°N

417

0.3610

Calcic Cambisols

Grassland

10

-

WorldView-2

0.46

90

Spain

3.623°W

39.993°N

412

0.3551

Calcic Cambisols

Grassland

10

-

aerial photo

~0.20

93

Spain

3.619°W

39.992°N

412

0.3551

Calcic Cambisols

Grassland

7

-

aerial photo

~0.20

93

Spain

3.623°W

39.990°N

409

0.3519

Calcic Cambisols

Grassland

10

-

aerial photo

~0.20

93

Spain

2.514°W

39.209°N

426

0.3588

Gleyic Cambisols

Grassland

16

-

GeoEye-1

0.41

91

Spain

2.515°W

39.208°N

422

0.3554

Gleyic Cambisols

Grassland

15

Y

GeoEye-1

0.41

91

Spain

1.204°W

38.588°N

454

0.3984

Calcic Cambisols

Grassland

39

Y

GeoEye-1

0.41

91

Spain

1.199°W

38.589°N

444

0.3942

Calcic Cambisols

Grassland

27

-

GeoEye-1

0.41

91

Spain

1.718°W

38.792°N

422

0.3624

Calcic Cambisols

Shrubland

15

Y

GeoEye-1

0.41

92

Spain

2.788°W

39.877°N

458

0.4063

Calcic Cambisols

Shrubland

15

Y

GeoEye-1

0.41

90

Spain

0.755°W

38.310°N

353

0.2905

Calcic Cambisols

Shrubland

22

Y

aerial photo

~0.20

91

Spain

2.258°W

39.038°N

423

0.3565

Calcic Cambisols

Shrubland

9

-

GeoEye-1

0.41

92

Spain

2.663°W

39.010°N

468

0.4022

Calcic Cambisols

Shrubland

13

Y

GeoEye-1

0.41

92

Spain

3.389°W

40.369°N

453

0.4079

Calcic Cambisols

Shrubland

11

Y

aerial photo

~0.20

93

Spain

1.802°W

39.539°N

466

0.4149

Calcic Cambisols

Shrubland

22

Y

GeoEye-1

0.41

90

Spain

2.345°W

39.128°N

420

0.3547

Calcic Cambisols

Shrubland

7

Y

GeoEye-1

0.41

92

Spain

1.020°W

38.765°N

457

0.4132

Calcic Cambisols

Shrubland

22

Y

GeoEye-1

0.41

92

Spain

2.838°W

39.001°N

467

0.3930

Calcic Cambisols

Shrubland

11

Y

GeoEye-1

0.41

92

Spain

2.572°W

39.053°N

446

0.3776

Calcic Cambisols

Shrubland

12

Y

GeoEye-1

0.41

91

Spain

2.544°W

39.862°N

479

0.4161

Calcic Cambisols

Shrubland

19

Y

GeoEye-1

0.41

90

Tunisia

9.647°E

34.494°N

177

0.1249

Lithosols

Grassland

10

Y

GeoEye-1

0.41

90

Tunisia

9.718°E

34.956°N

233

0.1683

Lithosols

Grassland

4

Y

GeoEye-1

0.41

90

Tunisia

10.499°E

32.983°N

141

0.0963

Lithosols

Grassland

6

Y

GeoEye-1

0.41

90

Tunisia

10.026°E

33.762°N

171

0.1309

Gipsy Yermosols

Grassland

18

Y

GeoEye-1

0.41

90

USA

109.710°W

38.174°N

244

0.1860

Calcaric Regosols

Shrubland

11

-

aerial photo

~0.20

92

USA

112.022°W

37.507°N

257

0.2028

Calcic Yermosols

Shrubland

10

-

aerial photo

~0.20

92

USA

111.857°W

36.685°N

184

0.1370

Luvic Kastanozems

Shrubland

9

-

aerial photo

~0.20

93

USA

115.808°W

33.747°N

203

0.1297

Luvic Yermosols

Shrubland

10

-

aerial photo

~0.20

92

USA

115.810°W

33.748°N

193

0.1235

Luvic Yermosols

Shrubland

8

-

aerial photo

~0.20

92

USA

115.796°W

33.754°N

207

0.1348

Luvic Yermosols

Shrubland

11

-

aerial photo

~0.20

93

USA

115.806°W

33.749°N

203

0.1297

Luvic Yermosols

Shrubland

9

-

aerial photo

~0.20

93

USA

115.812°W

33.751°N

197

0.1266

Luvic Yermosols

Shrubland

8

-

aerial photo

~0.20

93

Literature cited

FAO, ISRIC, and ISSS. 1998. World reference base of soil resources. Rome.

Hijmans, R. J., S. E. Cameron, J. L. Parra, P. G. Jones, and A. Jarvis. 2005. Very high resolution interpolated climate surfaces for global land areas. International Journal of Climatology 25:1965–1978.


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