Supplementary Table 1: Ecogeographical variables available (as layers) and used for development of ELC map
Variables
Measurement
units
Source
Resolution
BIOCLIMATIC COMPONENT
January mean precipitation
February mean precipitation
March mean precipitation
April mean precipitation
May mean precipitation
June mean precipitation
July mean precipitation
August mean precipitation
September mean precipitation
October mean precipitation
November mean precipitation
December mean precipitation
January mean temperature
February mean temperature
March mean temperature
April mean temperature
May mean temperature
June mean temperature
July mean temperature
August mean temperature
September mean temperature
October mean temperature
November mean temperature
December mean temperature
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
Worldclim project
http://www.worldclim.org
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
January minimum temperature
February minimum temperature
March minimum temperature
April minimum temperature
May minimum temperature
June minimum temperature
July minimum temperature
August minimum temperature
September minimum temperature
October minimum temperature
November minimum temperature
December minimum temperature
January maximum temperature
February maximum temperature
March maximum temperature
April maximum temperature
May maximum temperature
June maximum temperature
July maximum temperature
August maximum temperature
September maximum temperature
October maximum temperature
November maximum temperature
December maximum temperature
Annual mean temperature
Mean Diurnal Range*
Isothermality
Temperature Seasonality*
Max temperature of warmest month
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
Number
Number
°C
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
Min temperature of coldest month
Temperature annual range
Mean temperature of wettest quarter
Mean temperature of driest quarter
Mean temperature of warmest quarter
Mean temperature of coldest quarter
Annual precipitation*
Precipitation of wettest month
Precipitation of driest month
Precipitation seasonality
Precipitation of wettest quarter
Precipitation of driest quarter
Precipitation of warmest quarter
Precipitation of coldest quarter
De Martonne aridity index*
°C
°C
°C
°C
°C
°C
mm
mm
mm
mm
mm
mm
mm
mm
Classes
Derived from Bioclim variables of Worldclim
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
GEOPHYSICAL COMPONENT
Longitude
Latitude*
Elevation. Meters above sea level*
Land surface slope
Land surface orientation
Nordicity
Easticity
Global solar radiation at horizontal surface on January
Global solar radiation at horizontal surface on February
Global solar radiation at horizontal surface on March
Global solar radiation at horizontal surface on April
Global solar radiation at horizontal surface on May
decimal degrees
decimal degrees
m
Worldclim project. http://www.worldclim.org
degrees
degrees
Derived from Shuttle Radar Topographic Mission
digital
elevation model http://www.srtm.csi.cgiar.org
-1 to 1
-1 to 1
kWh/m2
kWh/m2
NREL CSR model data for South America Open
kWh/m2
energy info
2
http://www.en.openei.org/datasets/node/495
kWh/m
kWh/m2
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
Global solar radiation at horizontal surface on June
Global solar radiation at horizontal surface on July
Global solar radiation at horizontal surface on August
Global solar radiation at horizontal surface on September
Global solar radiation at horizontal surface on October
Global solar radiation at horizontal surface on November
Global solar radiation at horizontal surface on December
Global annual solar radiation at horizontal surface*
kWh/m2
kWh/m2
kWh/m2
kWh/m2
kWh/m2
kWh/m2
kWh/m2
kWh/m2
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
20 arc-minutes
EDAPHIC COMPONENT
Soil Mapping Unit
Sequence
Reference soil depth
Topsoil gravel content
Topsoil sand fraction*
Topsoil silt fraction*
Topsoil clay fraction*
Topsoil reference bulk density
Topsoil organic carbon
Topsoil pH (H2O)*
Topsoil CEC (clay)
Topsoil CEC (soil)*
Topsoil base saturation
Topsoil teb
Topsoil calcium carbonate
Topsoil gypsum
Topsoil sodicity (esp)
Topsoil salinity (ece)
Subsoil gravel content
Code
Number
cm
%vol.
% weight
% weight
% weight
kg/dm3
% weight
-log(H+)
cmol/kg
cmol/kg
%
cmol/kg
% weight
% weight
%
dS/m
%vol.
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
Harmonized World Soil Database
http://www.iiasa.ac.at/Research/LUC/External30 arc-seconds
World-soil-database/HTML/HWSD_Data.html?sb=4 30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
Subsoil sand fraction
Subsoil silt fraction
Subsoil clay fraction
Subsoil USDA texture classification
Subsoil reference bulk density
Subsoil organic carbon
Subsoil pH (H2O)
Subsoil CEC (clay)
Subsoil CEC (soil)
Subsoil base saturation
Subsoil teb
Subsoil calcium carbonate
Subsoil gypsum
Subsoil sodicity (esp)
Subsoil salinity (ece)
Share in soil mapping unit
Coverage
Dominant soil group symbol
Soil or non-soil unit
Topsoil texture
Drainage class (0-0.5% slope)
Available water capacity
Phase 1
Phase 2
Obstacles to roots (ESDB)
Impermeable layer (ESDB)
Soil water regime (ESDB)
Additional properties
Topsoil texture (USDA)
% weight
% weight
% weight
Classes
kg/dm3
% weight
-log(H+)
cmol/kg
cmol/kg
%
cmol/kg
% weight
% weight
%
dS/m
Symbol
Code
Symbol
Yes/No
Classes
Classes
mm/m
Classes
Classes
Classes
Classes
Classes
Classes
Classes
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
30 arc-seconds
Excess salt /salinity (seven classes)
Nutrient availability (seven classes)
Nutrient retention capacity (seven classes)
Oxygen availability to roots (seven classes)
Rooting conditions (seven classes)
Toxicity (seven classes)
Soil workability*
Classes
Classes
Classes
Classes
Classes
Classes
Classes
Topsoil salinity*
Classes
Classes
Topsoil sodicity*
*Variables specifically used to construct the ELC map
5 arc-minutes
5 arc-minutes
Harmonized World Soil Database - Supplementary 5 arc-minutes
Data. http://www.iiasa.ac.at/Research/LUC/External- 5 arc-minutes
World-soil-database/HTML/HWSD_Data.html?sb=4 5 arc-minutes
5 arc-minutes
5 arc-minutes
Derived from the layer of Soils of the Argentine of 30 arc-seconds
the Instituto Nacional de Tecnología Agropecuaria
30 arc-seconds
(INTA), http://www.geointa.inta.gov.ar/node/28
Supplementary Table 2. Descriptive statistics of the quantitative and qualitative variables for each category represented in the ELC map.
E
Frequency
C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1387
2163
3917
2479
189
1615
6787
4208
5050
2451
11254
5473
11395
2738
4336
187
1392
3402
3842
761
8342
2533
1322
Mean diurnal
range (C°)
mean
163.0
155.7
161.4
138.5
157.7
155.5
156.4
151.8
147.6
146.5
160.3
150.2
127.7
126.5
129.6
121.1
142.4
142.1
145.2
141.5
104.3
105.5
103.7
Bioclimatic
Annual
Temperature
precipitation
seasonality
(mm)
mean
mean
3413.5
112.4
3385.1
111.5
3399.9
122.8
3228.0
163.9
5390.4
242.6
5488.9
221.6
5322.0
279.7
4893.6
269.7
5608.6
261.9
5559.3
301.5
5724.9
354.8
5667.2
547.7
5056.3
190.3
5045.8
200.3
5016.0
232.2
4890.2
155.5
4930.1
513.2
5384.9
409.0
5309.3
463.9
4926.6
510.2
4533.7
196.5
4664.2
213.5
4572.6
218.1
Geophysical
De Martonne
aridity index
Altitude (m)
Latitude
Global annual solar
radiation (kWh/m2)
mean
6.6
6.6
7.7
13.2
10.8
8.5
11.9
12.0
10.6
12.1
14.0
21.5
9.7
9.1
11.8
8.0
16.7
13.5
15.6
16.8
10.9
10.8
12.4
mean
3881.7
3889.1
3988.8
3833.3
1280.7
1134.6
1334.2
1730.0
251.5
222.7
411.5
246.5
704.3
319.0
705.5
701.1
227.1
365.4
353.3
441.4
393.2
259.2
488.5
mean
-24.8
-25.4
-25.2
-29.0
-32.3
-30.5
-32.7
-31.0
-39.5
-39.0
-36.8
-36.8
-43.2
-42.8
-42.1
-44.5
-28.8
-30.1
-30.2
-28.0
-48.7
-47.9
-48.1
mean
6374.0
6375.1
6311.6
5887.7
5565.1
5642.4
5472.8
5524.4
4895.1
4891.3
5089.4
4956.4
4397.1
4442.7
4528.9
4237.0
5345.0
5359.9
5339.5
5304.6
3679.4
3799.3
3699.7
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
3145
17
807
134
55
937
1995
4583
1919
4705
9293
854
58
1122
1034
13278
8729
5852
9454
207
45
1250
2089
102.3
142.4
141.8
141.8
141.2
147.2
143.5
123.6
128.5
133.0
129.9
127.9
120.4
120.3
119.5
128.0
137.1
132.6
131.9
96.7
95.6
94.6
85.5
4379.0
3500.1
3851.3
4090.5
4564.4
4533.4
4360.8
4886.4
4892.5
5127.4
4946.0
4366.9
4508.1
4337.7
4075.4
4247.4
4268.9
4407.0
4351.3
3931.2
4056.2
3786.8
3330.9
201.4
340.9
387.2
686.4
654.3
667.3
672.0
875.9
905.5
865.1
839.2
678.7
617.8
656.7
1065.0
1055.0
855.3
931.7
974.4
438.7
381.2
738.7
525.4
12.2
49.9
54.0
28.7
25.6
35.0
34.7
35.0
34.3
33.6
32.8
38.7
30.6
38.8
63.4
34.6
27.6
30.2
33.2
33.0
29.7
52.6
37.3
487.4
4535.8
4157.2
1517.7
995.9
1638.3
1812.7
80.2
78.2
99.8
144.8
1123.5
600.7
1050.4
1097.9
122.3
144.5
176.7
267.7
1106.2
1365.0
982.6
525.1
-49.9
-32.0
-32.9
-27.7
-31.0
-34.7
-31.8
-36.2
-34.5
-35.4
-35.5
-40.5
-41.0
-42.0
-40.5
-27.9
-27.1
-27.8
-28.5
-48.7
-47.3
-47.8
-52.0
3497.1
5677.4
5468.0
5170.6
5200.4
5191.5
5128.5
4609.2
4864.4
4819.7
4781.9
4496.5
4277.6
4236.0
4198.6
5248.5
5272.9
5252.2
5185.5
3470.7
3568.9
3354.3
2948.4
EC Frequency
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1387
2163
3917
2479
189
1615
6787
4208
5050
2451
11254
5473
11395
2738
4336
187
1392
3402
3842
761
8342
2533
1322
3145
Topsoil sand
fraction (%)
mean
41.3
78.8
79.7
46.1
37.9
73.7
77.2
44.8
51.9
63.0
74.8
32.2
48.4
76.9
78.3
11.3
23.7
66.1
71.7
36.8
64.2
80.5
78.4
53.8
Topsoil silt
fraction (%)
mean
20.1
16.0
16.3
36.4
38.3
16.5
13.8
36.5
30.4
24.6
15.2
44.0
21.1
11.7
12.3
60.7
45.7
22.7
22.3
39.5
14.2
9.5
12.4
22.9
Topsoil clay
fraction (%)
mean
38.7
5.2
4.0
17.5
23.8
9.8
9.0
18.6
17.7
12.5
10.0
23.8
30.5
11.4
9.4
28.0
30.6
11.2
6.1
23.6
21.6
10.0
9.2
23.3
Edaphic
Topsoil
Topsoil cation exchange
pH (H2O)
capacity (cmol/kg)
mean
mean
6.5
22.7
7.1
7.4
7.2
7.2
6.4
18.1
7.7
25.5
7.4
9.9
7.8
10.8
6.5
17.8
8.2
21.8
7.7
15.8
7.8
13.6
6.6
22.0
7.9
25.9
7.7
14.8
7.4
15.2
6.3
31.8
7.0
21.7
7.4
10.4
7.6
9.5
6.8
18.9
7.7
25.2
7.5
15.6
7.3
15.5
6.0
27.7
Soil workability
mode
1
1
1
2
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
Topsoil
salinity
mode
1
1
1
1
1
3
1
1
1
4
1
1
1
4
1
1
1
3
1
1
1
1
1
1
Topsoil
sodicity
mode
1
3
1
1
1
3
1
1
1
3
1
1
1
3
1
1
1
2
1
1
1
3
1
1
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
17
807
134
55
937
1995
4583
1919
4705
9293
854
58
1122
1034
13278
8729
5852
9454
207
45
1250
2089
82.4
47.0
34.6
51.5
76.8
45.0
27.4
56.9
76.3
28.4
55.0
61.6
73.5
52.3
10.9
38.8
68.4
24.9
58.5
69.8
69.7
43.9
11.6
36.0
44.5
37.2
15.7
39.1
39.8
27.3
11.3
46.6
18.8
22.3
18.7
31.9
52.6
41.4
24.7
47.2
9.6
19.4
22.2
37.4
6.0
17.0
20.9
11.3
7.5
15.9
32.9
15.8
12.4
25.0
26.2
16.0
7.8
15.8
34.6
19.8
6.9
27.9
31.9
10.8
8.1
18.7
7.6
6.3
7.0
6.7
7.2
6.3
8.3
6.3
7.0
5.9
7.9
6.7
6.8
6.0
7.0
6.7
6.3
5.9
7.7
6.9
6.6
6.3
7.6
18.0
23.6
14.6
14.2
16.4
26.1
14.9
8.5
23.8
26.4
20.7
16.7
33.6
25.7
16.9
7.6
21.5
28.7
22.6
18.7
30.4
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
4
1
1
1
1
1
1
1
1
1
2
1
1
1
4
1
1
1
2
1
1
1
4
1
1
EVALUATION AND IMPROVEMENT OF THE ECOGEOGRAPHICAL REPRESENTATIVENESS OF A COLLECTION OF THE
GENUS TRICHLORIS IN ARGENTINA. Genetic Resources and Crop Evolution
Lorena Marinoni. Andrés Bortoluzzi. Mauricio Parra-Quijano. Juan Marcelo Zabala. José Francisco Pensiero.
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L. Marinoni*, A. Bortoluzzi. J.M. Zabala. J.F. Pensiero. Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, Esperanza
(3080), Santa Fe, Argentina. *Corresponding autor: e-mail:marinonilorena@hotmail.com (Tel.:+54 3496 426400 int. 334).
M. Parra-Quijano. Tratado Internacional sobre los Recursos Fitogenéticos para la Alimentación y la Agricultura, FAO, Viale delle Terme di
Caracalla, 1, 00153 Rome, Italy.