ERRATUM (1). In the original published version of Appendix 2, under Geographic Setting, number 7, the following sentence is erroneous:
"Give the mean elevation of the raw material production area expressed as miles above sea level."
The sentence should read:
"Give the mean elevation of the raw material production area expressed as metres above sea level"
[October 1, 2004]
ERRATUM (2). In the original published version of Table 2, the following variable is incorrect:
"Elevation of study area (miles above sea level)"
The variable should be:
"Elevation of study area (metres above sea level)"
The corrected table, in which the correct variable name appears, is provided in full below.
TABLE 2(corrected) : Significant associations for key variables in cases from three regions: Asia, Latin America, and Africa. Values reported are media values. NTFP = Nontimber forest products; Kruskal-Wallis = Kruskal-Wallis nonparametric test (df = 2).
Region
|
Kruskal-Wallis
|
||||||||||||||||||||||||||||
Variables | |||||||||||||||||||||||||||||
Asia
|
Latin America
|
Africa
|
X2
|
P-value
|
|||||||||||||||||||||||||
Population density (persons/km2) |
75.1
|
22.3
|
11.1
|
10.65
|
0.005
|
||||||||||||||||||||||||
Elevation of study area (metres above sea level) |
600
|
200
|
400
|
8.30
|
0.016
|
||||||||||||||||||||||||
Road density (km/km2) |
0.44
|
0.17
|
0.12
|
5.56
|
0.062
|
||||||||||||||||||||||||
Precipitation (mm) |
1859
|
1950
|
944
|
11.02
|
0.004
|
||||||||||||||||||||||||
Percentage of product harvested from wild population |
40
|
97
|
100
|
8.06
|
0.018
|
||||||||||||||||||||||||
Labor intensity in NTFP production (person-daysha-1yr-1) |
30
|
2
|
4
|
5.68
|
0.058
|
||||||||||||||||||||||||
Land price at purchasing power parity (U.S.$/ha) |
2640
|
675
|
368
|
16.30
|
0.000
|
||||||||||||||||||||||||
Time to harvesting maturity (years) |
7
|
10
|
15
|
6.86
|
0.032
|
||||||||||||||||||||||||
Reproductive period (years) |
5
|
7.5
|
20
|
13.64
|
0.001
|
||||||||||||||||||||||||
Average household size |
5
|
5.5
|
6
|
8.39
|
0.015
|
||||||||||||||||||||||||
Local labor rate (U.S.$/day at purchasing power parity) |
6.55
|
10.25
|
5.62
|
5.23
|
0.073
|
||||||||||||||||||||||||
Number of economically harvestable individual per hectare |
400
|
23
|
17
|
8.17
|
0.017
|
||||||||||||||||||||||||
Value of production (U.S.$ha-1yr-1) |
6.82
|
2.74
|
0.43
|
9.02
|
0.011
|
||||||||||||||||||||||||
Estimated raw material trade in area (U.S.$/yr) |
220,000
|
70,000
|
8900
|
11.28
|
0.004
|
||||||||||||||||||||||||
NTFP production area per household (ha) |
5.9
|
45.6
|
132
|
10.77
|
0.005
|
||||||||||||||||||||||||
Total trade (export + national) |
11,230,000
|
2,003,000
|
555,000
|
11.26
|
0.003
|
||||||||||||||||||||||||
[October 22, 2004]