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Table 5 PCA correlation values between observed variables

From: A contribution towards improving the applicability of the Myriophyllum aquaticum sediment contact test

Variables

RGR (I%)

wFW (I%)

sFW (I%)

sL (I%)

rFW (I%)

rL (I%)

Sand

Silt and clay

Org. matter

Phenanth.

Fluoranth.

Heptachlor

Hept. epoxide

Aldrin

Endrin

4,4′-DDE

4,4′-DDD

PCB sum

Mineral oils

Cd

Pb

Hg

As

RGR (I%)

1

                      

wFW (I%)

0.933

1

                     

sFW (I%)

0.860

0.916

1

                    

sL (I%)

0.668

0.737

0.878

1

                   

rFW (I%)

0.288

0.188

 0.120

 0.359

1

                  

rL (I%)

 0.256

 0.172

 0.351

 0.329

0.468

1

                 

Sand

0.754

0.765

0.791

0.569

 0.003

 0.369

1

                

Silt and clay

0.688

0.689

0.809

0.663

0.231

0.469

0.936

1

               

Org. matter

 0.320

 0.367

 0.097

0.081

 0.433

 0.033

 0.202

 0.039

1

              

Phenanthrene

 0.207

 0.307

 0.066

0.034

 0.328

0.032

 0.237

0.023

0.784

1

             

Fluoranthene

 0.195

 0.289

 0.052

0.063

 0.349

0.018

 0.238

0.022

0.781

0.995

1

            

Heptachlor

0.383

0.307

0.261

0.188

0.233

 0.044

0.254

 0.171

 0.046

0.027

0.079

1

           

Hept. epoxide

0.306

0.269

0.290

0.228

 0.192

 0.313

0.232

 0.288

 0.117

 0.111

 0.104

0.020

1

          

Aldrin

0.083

0.084

0.196

0.155

 0.379

 0.150

0.106

 0.133

 0.176

 0.082

 0.083

 0.086

0.302

1

         

Endrin

0.044

0.106

0.219

0.192

0.480

 0.196

0.140

 0.200

 0.180

 0.088

 0.088

 0.088

0.313

0.938

1

        

4,4′-DDE

0.187

0.248

0.323

0.163

 0.197

0.463

0.447

 0.375

 0.167

 0.137

 0.180

 0.199

0.030

0.280

0.393

1

       

4,4′-DDD

 0.162

0.049

0.065

 0.044

 0.163

 0.021

0.165

 0.214

0.012

 0.075

 0.072

 0.071

 0.027

 0.067

0.203

0.306

1

      

PCB sum

 0.023

0.222

0.220

0.188

 0.140

0.084

0.280

 0.241

 0.167

 0.100

 0.097

 0.103

 0.010

 0.098

0.089

0.365

0.652

1

     

Mineral oils

0.036

 0.065

0.172

0.103

 0.237

 0.149

0.111

 0.268

0.566

0.796

0.754

0.070

0.079

0.006

0.064

0.301

0.058

0.057

1

    

Cd

0.206

0.341

0.336

0.208

 0.038

 0.095

0.485

 0.358

 0.171

 0.137

 0.172

 0.069

0.139

 0.110

 0.003

0.702

0.274

0.673

0.274

1

   

Pb

0.166

0.049

0.296

0.356

0.463

 0.386

0.098

 0.280

0.563

0.736

0.746

0.034

0.267

0.146

0.113

0.139

 0.095

 0.120

0.644

0.052

1

  

Hg

0.038

 0.029

0.127

0.186

 0.345

 0.330

0.034

 0.119

0.490

0.599

0.601

 0.082

 0.055

 0.113

 0.111

0.327

 0.060

 0.085

0.493

0.232

0.829

1

 

As

 0.223

 0.239

0.047

0.185

0.553

 0.043

 0.139

 0.094

0.789

0.920

0.923

 0.139

 0.043

 0.007

0.000

 0.054

0.043

0.091

0.694

0.006

0.798

0.667

1

  1. Pearson (n), values in italics are different from 0 with a significance level alpha = 0.05
  2. Inhibitions based on RGR (I%), relative growth rate; wFW (I%), whorl fresh weight; sFW (I%), shoot fresh weight; sL (I%), shoot length; rFW (I%), root fresh weight; rL (I%), root length