Table 2 Two–way ANOVA analysis of environmental variables in Luvuvhu River system, South Africa. Values in bold indicate significant differences at p < 0.05, season df = 1, site df = 2.

From: Environmental characteristics shape macroinvertebrate community structure across spatiotemporal scales in a subtropical African river system

Variable

Season

Sections

Season × Sections

Water

F

p

F

p

F

p

Temperature

63.816

< 0.001

8.875

< 0.001

2.823

0.068

pH

66.125

< 0.001

0.706

0.498

0.549

0.58

Total dissolved solids

3.473

0.067

6.143

0.004

0.018

0.982

Conductivity

0.024

0.879

2.874

0.065

0.029

0.971

Salinity

0.54

0.466

3.561

0.035

0.228

0.797

Resistivity

5.027

0.029

9.129

< 0.001

0.956

0.390

Ammonium

33.803

< 0.001

0.614

0.545

0.846

0.434

Phosphates

40.571

< 0.001

2.663

0.078

2.109

0.131

Sediment

pH

1.202

0.278

2.748

0.072

0.693

0.504

Resistivity

6.994

0.011

1.089

0.343

0.002

0.998

Stone

5.194

0.026

0.588

0.559

0.307

0.737

P

0.480

0.491

1.933

0.154

0.002

0.998

K

4.694

0.034

1.127

0.331

0.048

0.953

Ca

2.750

0.103

1.754

0.182

1.043

0.359

Mg

1.697

0.198

1.228

0.300

0.319

0.728

Na

6.264

0.015

1.480

0.236

0.546

0.582

Cu

1.217

0.275

5.087

0.009

0.743

0.480

Zn

0.024

0.877

8.596

0.001

1.238

0.298

Mn

0.845

0.362

2.528

0.089

0.515

0.600

B

8.032

0.006

3.482

0.037

0.696

0.503

Fe

0.097

0.756

1.754

0.182

2.634

0.080

C

24.603

< 0.001

0.676

0.513

0.896

0.414

S Am.acet

3.481

0.067

2.552

0.087

2.678

0.077

T Value

2.031

0.159

1.776

0.178

0.669

0.516

Acid Sat.

2.316

0.133

1.318

0.275

0.483

0.619

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