Table 1 Locations of the 15 source populations for Quercus ilex in Northern Tunisia, and their main associated climate characteristics. Lat, latitude (decimal); Long, longitude (decimal); Alt, altitude (m), MAT, mean annual temperature (°C); MAP, mean annual precipitation (mm); ET0, mean annual potential evapotranspiration (mm)

1

Jebel Zaghouan

36.364

10.091

639

15.4

553

1726

2

Sidi Medien

36.346

10.093

501

16.1

524

1751

3

Jebel Chehid

36.384

9.330

647

15.7

625

1883

4

Jebel Boukhil

36.292

9.111

696

15.6

627

1842

5

Beni Hazem

35.865

9.061

1039

14

556

1768

6

Jebel Barbrou

35.710

9.230

1078

13.9

517

1849

7

Mansoura

35.818

9.421

937

14.4

506

1808

8

Plateau Kesra

35.821

9.395

1062

13.8

545

1786

9

Jebel Serj

35.945

9.550

953

14.2

550

1796

10

Ain Boussaadia

36.046

9.635

578

16.1

464

1843

11

Parc Zaghdoud

35.886

9.726

489

16.6

407

1976

12

Ain Fdhil

35.906

9.040

959

14.4

544

1778

13

Nebeur

36.290

8.770

489

16.8

553

1807

14

Jeradou

36.275

8.439

858

14.4

810

1685

15

Sakiet Sidi Youssef

36.260

8.394

880

14.2

816

1678