Figure S1 - PLOS

Block 1 = Block D

Block 4 = Block A

Block 2 = Block C

PIAB Plot 1

LALA-PIST Plot 18

6 gymno Plot 35

BEPE-QUROPIAB-PISY Plot 52

PIAB Plot 69

ACPL-BEPE Plot 86

PIAB Plot 103

PIAB-PISY Plot 120

ACPL-BEPE Plot 137

ACPL-BEPE Plot 311

BEPE-LADEPIAB-PISY Plot 322

ACSA-PIAB Plot 335

ACPL-BEPE Plot 348

ACSA-PIGL Plot 361

ACPL-LADEPIAB-PISY Plot 372

ACPL-PIAB Plot 383

ACPL-QUROLADE-PISY Plot 394

PISY Plot 405

PIGL Plot 2

ACPL-BEPEQURO-LADE Plot 19

QURO Plot 36

PIST-PISY Plot 53

PIAB-PISY Plot 70

PIAB-PISY Plot 87

LADE-QURO Plot 104


ACPL-BEPA Plot 138

ACPL-BEPA Plot 312

PIAB Plot 323

PISY Plot 336

ACPL Plot 349


PIGL Plot 373

ACPL-QURU Plot 384

BEPA Plot 395



ACSA-BEPA Plot 20

PIST Plot 37

LADE-QURO Plot 54


ACPL-PIAB Plot 88


ACPL Plot 122

BEPE-PISY Plot 139

6 NA Plot 313

LADE Plot 324


BEPE-PISY Plot 350

6 angio Plot 363

BEPE Plot 374


PIAB Plot 396

LALA-PIST Plot 407

BEPA-BEPE Plot 4

PIAB Plot 21

ACPL-BEPE Plot 38

ACPL-BEPE Plot 55

BEPE-PISY Plot 72

BEPE Plot 89

6 gymno Plot 106

ACPL-BEPEQURO-PIAB Plot 123


ACPL-PIAB Plot 154

BEPE-PISY Plot 314


PIAB-PIGL Plot 338

BEPE-QURO Plot 351

ACPL Plot 364


LALA-QURU Plot 386

ACPL-BEPE Plot 397

ACPL-PIAB Plot 408

PISY Plot 5

BEPE-PISY Plot 22

PIGL-QURO Plot 39

PIAB Plot 56

QURO Plot 73

ACSA-PIGL Plot 90

ACPL Plot 107

LALA-PIST Plot 124

BEPE Plot 141

BEPA Plot 155

PIAB-PISY Plot 168

PIST Plot 315

ACPL Plot 326

BEPE-PISY Plot 339


BEPE-QURO Plot 365

QURO Plot 376


LADE-QURO Plot 398

LADE-QURO Plot 409

LALA-PISY Plot 6

PISY Plot 23


Nagymno Euangio Plot 57



ACSA-BEPA Plot 108

ACPL-PIAB Plot 125

BEPE-QURO Plot 142


ACSA-PIGL Plot 169


PIAB-PISY Plot 327

LADE-QURU Plot 340

QURO Plot 353

ACSA-BEPA Plot 366

NAangio Eugymno Plot 377

PIST-PISY Plot 388


6 gymno Plot 410

BEPE-PISY Plot 109

PIST Plot 126


ACSA-PIAB Plot 157



LADE Plot 317

LADE Plot 328


QURO Plot 354


ACPL-BEPE Plot 378


BEPE-PISY Plot 400

LADE Plot 411

BEPE Plot 144

PISY Plot 158

LADE-LALA Plot 171

BEPA-BEPE Plot 308

PIAB-PISY Plot 318


PISY Plot 342


QURU Plot 368

BEPE Plot 379

LADE-LALA Plot 390

PIAB-PISY Plot 401



PIAB-PIST Plot 319

BEPE Plot 330

PIGL-QURO Plot 343

ACPL-PIAB Plot 356

BEPE-QURO Plot 369


PIAB-PISY Plot 391

BEPA-PIST Plot 402

ACSA Plot 413

ACSA-QURO Plot 310


6 EU Plot 331

PIAB Plot 344

BEPE-QURO Plot 357

ACPL Plot 370

ACPL-PIAB Plot 381

LALA Plot 392


PISY Plot 414

LALA-PISY Plot 321

BEPE Plot 332

BEPA-QURU Plot 345


BEPA-BEPE Plot 371

BEPE-QUROACSA-QURO PIAB-PISY Plot 393 Plot 382

LADE-QURO Plot 404

NAgymno Euangio Plot 415

PIAB-PISY Plot 7

BEPE-QUROACPL-QURU PIAB-PISY Plot 41 Plot 24


PIAB-PIGL Plot 75



LADE-QURO BEPE-QURO Plot 25 Plot 42

LALA Plot 59

LADE Plot 76

PISY Plot 93

ACPL-BEPE- ACPL-LADEQURO-LADE PIAB-PISY Plot 110 Plot 127

ACPL-LADELADE-QURO LALA-QURU PIAB-PISY Plot 60 Plot 77 Plot 43

6 angio Plot 94

BEPE-QURO Plot 111

PIAB Plot 128

PIAB-PISY Plot 198

LALA-PIST Plot 208


LADE-LALA Plot 226

BEPE-PISY Plot 235

ACPL-PIAB Plot 173

LADE Plot 182

6 NA Plot 191

QURU Plot 199


QURU Plot 218

PISY Plot 227


BEPA-QURU Plot 244

BEPE-QUROACPL-QUROPIGL-QURO PIAB-PISY LADE-PISY Plot 183 Plot 192 Plot 174

LADE Plot 200



ACSA-PIAB Plot 228

BEPE Plot 237

LADE-QURO Plot 245

6 angio Plot 175

BEPE-QURO Plot 184

LALA-PISY Plot 193


QURO Plot 211

LALA-QURU BEPE-QURO Plot 220 Plot 229

ACPL Plot 238


ACPL-PIAB Plot 252

QURO Plot 333

LADE-QURO Plot 346

PIAB Plot 359

LADE-QURO Plot 272

BEPE-QURO Plot 279

ACSA Plot 286

ACPL-BEPA Plot 293

ACPL-BEPE Plot 300

BEPA-QURU Plot 163

QURO Plot 176

BEPE Plot 185

BEPE Plot 194

LADE Plot 202

PIAB Plot 212


BEPE Plot 230


ACPL-BEPE Plot 247

LADE-QURO Plot 253

LALA-PISY Plot 334

BEPE Plot 347

BEPA-QURU Plot 360


LADE Plot 280


LADE-QURO Plot 294

BEPE Plot 301

ACSA-QURO LADE-QURO Plot 150 Plot 164

PIAB-PIST Plot 177

BEPE-PISY Plot 186

PIST-PISY Plot 195

BEPE-LADE- ACPL-QUROPIAB-PISY LADE-PISY Plot 203 Plot 213

PIST-PISY Plot 222

QURO Plot 231


PIAB Plot 248


PISY Plot 258

LADE Plot 264


PIAB-PISY Plot 267

LADE Plot 274

6 NA Plot 281

QURO Plot 288

ACPL Plot 295


QURO Plot 196

ACPL-BEPE Plot 204

PIGL-QURO Plot 214

ACPL Plot 223

BEPE-PISY Plot 232

PIGL Plot 241

ACSA-QURO Plot 249

ACPL-PIAB Plot 255

PIAB Plot 259

BEPE-QURO Plot 266

PISY Plot 268

ACSA-PIGL Plot 275


ACPL-PIAB Plot 289


LALA-PISY Plot 303


ACPL Plot 276

PIAB-PIGL Plot 283

LALA Plot 290

BEPE-QURO Plot 297

PISY Plot 304

BEPA-PIST Plot 270

6 EU Plot 277

BEPE-PISY Plot 284


ACPL-QURU Plot 298

PIAB-PISY Plot 305


BEPE Plot 278


ACSA-BEPA Plot 292

PIST Plot 299

6 angio Plot 306

ACSA Plot 27


LADE Plot 61

QURO Plot 78

LADE Plot 95

BEPE-PISY Plot 112


BEPA-PIST Plot 146

PIAB-PISY Plot 160


BEPE Plot 28

ACPL-PIAB Plot 45

LADE Plot 62

ACPL-BEPA Plot 79

LADE-QURO Plot 96



PISY Plot 147

PISY Plot 161

ACSA-PIAB Plot 12

6 EU Plot 29


PIAB-PIST Plot 63



PIGL Plot 114

ACPL-BEPE Plot 131

BEPA-BEPE Plot 148

LADE-QURO Plot 162

PISY Plot 13

PIAB-PISY Plot 30

ACPL Plot 47

ACPL Plot 64

BEPA Plot 81

BEPE-QURO Plot 98

QURO Plot 115

LADE-QURU Plot 132


BEPA-QURU Plot 14


ACPL-BEPE Plot 48

LADE-QURU Plot 65


BEPE Plot 32

BEPA-PIST Plot 49

BEPE-QURO Plot 66

BEPE-PISY Plot 16

QURU Plot 33

ACPL Plot 50

BEPE Plot 67

QURO Plot 17


LADE-LALA Plot 51


ACSA-QURO Plot 100

ACPL-BEPEBEPE-QURO QURO-LADE Plot 101 Plot 84 ACPL Plot 85


Fertilization Black lettering = non fertilized plots Blue lettering = N fertilized plots Green lettering = P fertilized plots Red lettering = N+P fertilized plots

Block 3a = Block B PIAB Plot 190

6 NA Plot 10

BEPE-PISY Plot 83

30 m

ACPL-BEPE Plot 181

ACPL-PIAB Plot 26

ACPL Plot 133

20 m

PISY Plot 172

BEPE-QURO- ACPL-LADEPIAB-PISY PIAB-PISY Plot 145 Plot 159

ACPL-PIAB Plot 9

ACPL-QURO- BEPE-QUROLALA-QURU LADE-PISY PIAB-PISY Plot 116 Plot 82 Plot 99

10 m

ACPL Plot 117


PIAB Plot 151

PIAB-PIGL Plot 118


6 EU Plot 152


LALA Plot 136

LADE-QURO Plot 153

ACSA Plot 165

ACPL-BEPE- BEPE-QUROQURO-LADE PIAB-PISY Plot 187 Plot 178

BEPE-QURO ACPL-QURU Plot 166 Plot 179

LADE Plot 188


PIAB Plot 206

ACPL-BEPE Plot 215

ACSA-ACPL Plot 224


6 gymno Plot 242

ACPL-BEPE Plot 250

LADE Plot 256

LADE-QURU Plot 260

PIAB-PIST Plot 262


QURO Plot 189

PIAB-PISY Plot 205


BEPA Plot 216


QURO Plot 234

BEPE-PISY Plot 243


ACPL-PIAB Plot 257


PIAB-PISY Plot 263

ACPL-PIAB Plot 180

Species richness Monoculture 2-species mixture 4-species mixture 6-species mixture

Block 3b = Block B

Tree species European (EU) angiosperm : European (EU) gymnosperm: North American (NA) angiosperm: North American (NA) gymnosperm:

ACPL = Acer platanoides LADE = Larix decidua ACSA = Acer saccharum LALA = Larix laricina

BEPE = Betula pendua PIAB = Picea abies BEPA = Betula papyrifera PIGL = Picea glauca

Figure S1 Schematic map illustrating the design of Freiburg IDENT. The experiment is located at 48°01'10"N / 7°49'37"E. Please see the legend for further explanations.

QURO = Quercus robur PISY = Pinus sylvestris QURU = Quercus rubra PIST = Pinus strobus