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Table 4 Differences between children/adolescents (< = 20 years) and adults (> 20 years) in numbers of plant reports per freelist, habitat category and use category (Mann–Whitney U test)

From: Local plant knowledge and its variation among farmer’s families in the Napf region, Switzerland

Variable

Age groups

n

Arithmetic mean

SD

p value

Freelist length

Children/Adol.(< = 20 years)

20

24.95

19.204

0.000

 

Adults(> 20 years)

40

54.35

24.603

 

Garden

Children/Adol.(< = 20 years)

20

8.00

8.974

0.194

 

Adults(> 20 years)

40

13.20

15.604

 

Orchard

Children/Adol.(< = 20 years)

20

3.15

2.700

0.354

 

Adults(> 20 years)

40

4.00

3.080

 

Field

Children/Adol.(< = 20 years)

20

0.80

2.016

0.011

 

Adults(> 20 years)

40

2.38

3.364

 

Meadow/pasture

Children/Adol.(< = 20 years)

20

5.35

3.438

0.000

 

Adults(> 20 years)

40

17.90

8.366

 

Forest

Children/Adol.(< = 20 years)

20

5.95

4.828

0.002

 

Adults(> 20 years)

40

12.55

8.515

 

Way- or brookside

Children/Adol.(< = 20 years)

20

1.55

1.701

0.000

 

Adults(> 20 years)

40

4.10

2.925

 

Other sites

Children/Adol.(< = 20 years)

20

0.50

0.761

0.681

 

Adults(> 20 years)

40

0.75

1.149

 

Meadow (grasses)

Children/Adol.(< = 20 years)

20

0.60

0.598

0.000

 

Adults(> 20 years)

40

4.43

4.119

 

Meadow (herbaceous)

Children/Adol.(< = 20 years)

20

4.75

3.354

0.000

 

Adults(> 20 years)

40

13.48

6.081

 

Forest (trees)

Children/Adol.(< = 20 years)

20

3.15

3.392

0.014

 

Adults(> 20 years)

40

6.38

4.996

 

Forest (shrubs)

Children/Adol.(< = 20 years)

20

0.60

0.821

0.000

 

Adults(> 20 years)

40

2.60

2.193

 

Forest (herbaceaous)

Children/Adol.(< = 20 years)

20

2.20

2.913

0.043

 

Adults(> 20 years)

40

3.58

3.129

 

Edible plants

Children/Adol.(< = 20 years)

20

14.25

13.603

0.021

 

Adults(> 20 years)

40

25.50

19.396

 

Fodder

Children/Adol.(< = 20 years)

20

3.65

3.870

0.000

 

Adults(> 20 years)

40

11.03

7.495

 

medicinal plants

Children/Adol.(< = 20 years)

20

2.45

3.706

0.000

 

Adults(> 20 years)

40

8.83

8.149

 

Ornamental plants

Children/Adol.(< = 20 years)

20

3.15

3.703

0.112

 

Adults(> 20 years)

40

6.63

8.136

 

Wood

Children/Adol.(< = 20 years)

20

4.75

8.052

0.199

 

Adults(> 20 years)

40

8.43

8.930

 

Toy

Children/Adol.(< = 20 years)

20

2.25

2.124

0.033

 

Adults(> 20 years)

40

1.58

2.640

 

Veterinary medicine

Children/Adol.(< = 20 years)

20

0.00

0.000

0.000

 

Adults(> 20 years)

40

1.38

1.944

 

Other uses

Children/Adol.(< = 20 years)

20

1.55

2.704

0.003

 

Adults(> 20 years)

40

4.15

4.458