Table 5 Impacts after 300 years of logging, on demographic parameters and basal area extracted of D. odorata

From: Long-term impacts of selective logging on two Amazonian tree species with contrasting ecological and reproductive characteristics: inferences from Eco-gene model simulations

MCD (cm)

Logging intensity

Logging cycle (years)

Demographic parameters

   

Basal area m2ha−1

Number of trees (>10 cm d.b.h.)

Reproductive trees (>35 cm d.b.h.)

Basal area extracted

   

Max (%)

Min (%)

Max (%)

Min (%)

Max (%)

Min (%)

m2ha−1

50

10

30

33

26

25

16

32

25

0.065

  

60

18

9

16

6

18

9

0.041

  

100

13

4

12

3

13

4

0.021

 

30

30

76

67

47

36

66

56

0.114

  

60

51

32

34

18

46

27

0.097

  

100

37

13

26

7

34

11

0.054

 

50

30

90

84

56

45

80

69

0.115

  

60

77

60

48

29

68

45

0.120

  

100

62

28

41

14

56

22

0.076

 

70

30

93

89

60

49

86

76

0.109

  

60

89

76

56

37

80

57

0.120

  

100

82

51

52

23

73

35

0.076

 

90

30

X

X

X

X

X

X

X

  

60

X

X

X

X

X

X

X

  

100

93

70

59

30

86

47

0.057

100

10

30

15

9

13

6

13

10

0.050

  

60

10

4

9

3

8

4

0.028

  

100

8

2

8

1

6

2

0.015

 

30

30

37

24

21

12

26

18

0.117

  

60

25

8

15

4

16

6

0.081

  

100

20

1

13

1

13

1

0.043

 

50

30

54

39

27

17

36

25

0.142

  

60

41

14

21

6

25

9

0.124

  

100

33

3

17

1

20

2

0.070

 

70

30

62

49

30

19

40

30

0.143

  

60

53

23

25

8

32

13

0.148

  

100

47

6

23

2

29

3

0.094

 

90

30

66

55

33

22

44

34

0.140

  

60

63

35

29

12

39

18

0.120

  

100

60

13

28

4

37

6

0.104

  1. Abbreviations: d.b.h., diameter at breast height; logging intensity, percentage of trees removed above MCD; Max, maximum; MCD, minimum cutting diameter at breast height; Min, minimum; X, no result because of population collapse. Maximum calculated as the impact one year after the last logging and minimum as the impact one year before the last logging event.
  2. Standard deviations of control population are 0.003 (4%), 5.6 (2%), 5.5 (3%) and 0.003 (4%) for basal area, number of individuals, number of reproductive individuals, and extracted basal area, respectively.