Table 1.

Geographical coordinates and mean climatic data of the sampled sites listed according to their subspecies affiliation and from north to south.

Site names	Olive subspecies	Latitude (°)	Longitude (°)	Altitude (m)	MAT (°C)c	TMA (°C)c	TMI (°C)c	MAP (mm/year)c	AI
1. Tlat Taghramt	WO	35.7889	−5.4681	293	16.9	29.5	6.3	801	0.708
2. Bni Harchim	WO	35.5510	−5.6198	150	18.0	30.4	7.3	779	0.652
3. Bni Arous	WO	35.3567	−5.7185	90	18.1	31.3	6.5	781	0.621
4. Dar Chaoui	WO	35.5205	−5.7295	64	18.1	30.0	7.7	751	0.626
5. Dar Akouba	WO	35.2305	−5.3095	322	17.7	32.3	5.6	774	0.611
6. Tnin Sidi Yemenia	WO	35.3526	−5.9580	126	17.7	30.4	6.1	765	0.609
7. Mesmoudaa	WO	34.7499	−5.7341	196	18.0	33.9	5.0	805	0.586
8. El Ksiba	WO	32.5745	−6.0442	900	16.6	36.7	1.4	721	0.465
9. Moulay Bouazza	WO	33.1021	−6.4357	745	16.6	35.3	2.2	545	0.369
10. Asnib	WO	31.2076	−8.0413	953	15.6	33.2	0.2	420	0.284
11. Argana	MO	30.8716	−9.0973	1010	16.4	27.3	4.5	296	0.240
12. Immouzzer	MO	30.6973	−9.5891	595	16.0	25.5	5.2	307	0.268
13. Issi-Adgil	MO	30.7161	−9.6649	353	16.7	25.1	6.4	286	0.253

Climatic variables were extracted from Worldclim database (Fick and Hijmans, 2017) and the CGIAR Global Aridity and PET Database (Zomer et al., 2007), and abbreviated as follows: MAT, mean annual temperature (°C); MAWM, mean annual temperature of the warmest month (°C); MACM, mean annual temperature of the coldest month (°C); MAP, mean annual precipitation (mm); AI, aridity index (unit less, calculated as PET/MAP, PET: potential evapotranspiration in mm/year) (UNEP, 1997).

^aPopulations within agroecosystems,

^bstreamside population, and

^c33 years-average values were used for climatic variables. High AI values refer to humid conditions and low values refer to arid conditions. WO, wild olive or oleaster (Olea europaea subsp. europaea var. sylvestris); MO, Moroccan olive (Olea europaea subsp. maroccana).