| Country of the unit : | Portugal |
| Unit number: | PRT00006 |
| National gene conservation unit number: | PRT00006 |
| Province or state: | Portugal |
| Department or county: | Algarve |
| Municipality: | Tavira |
| Local name : | Ribeira da Asseca |
| Latitude : | 37°9'13.4986"N |
| Longitude : | 7°41'35.4346"W |
| Restriction in making the geographical coordinates publically available: | 0 |
| Datum: | |
| Polygon coordinates (if available): | |
| Minimum elevation (m): | 20 |
| Maximum elevation (m): | 20 |
| Surface area of the unit (ha): | 0.5 |
| Ownership of the unit : | Private |
| Type and function of the unit : | |
| Monthly temperature (°C): | |
| Total annual mean precipitation (mm): | |
| Heat sum and/or length of the growing season (in days): | |
| Accumulated moisture deficit: | |
| Year of collection of the field data entered: | 2007 |
| Year of the most recent visit: | 2007 |
| Remarks on specific soil characteristics: | River bed, rich soil of "Gres de Silves" type |
| Remarks on other specific characteristics of the unit: | Rare species in Portugal.
Very few trees edging orange orchards. Very healthy, in a excellent veegtative status. Very poor natural regeneration |
| All tree species growing in the unit: | Populus alba |
| Target species: | Populus alba |