European Information System on Forest Genetic Resources
Detail page for Unit number: LTU00097 and Target species: Betula pendula
| Country of the unit : | Lithuania |
| Unit number: | LTU00097 |
| National gene conservation unit number: | 37BGD043 |
| Province or state: | Telsiai |
| Department or county: | Rietavas |
| Municipality: | Medingenai |
| Local name : | Patyriai forest birch state genetic reserve |
| Latitude : | 55°46'50.0000"N |
| Longitude : | 22°01'37.0000"E |
| Restriction in making the geographical coordinates publically available: | 0 |
| Datum: | |
| Polygon coordinates (if available): | |
| Minimum elevation (m): | 140 |
| Maximum elevation (m): | 140 |
| Surface area of the unit (ha): | 5.1 |
| Ownership of the unit : | Public |
| Type and function of the unit : | Gene reserve forest |
| 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: | 1993 |
| Year of the most recent visit: | 2019 |
| Remarks on specific soil characteristics: | Eutrophic loamy sand of normal moisture |
| Remarks on other specific characteristics of the unit: | |
| All tree species growing in the unit: | Pinus sylvestris; Picea abies; Betula pendula |
| Target species: | Betula pendula |
| National population unit number if existing: | 37BGD043 |
| Year of establishment of the GCU for the species: | 1993 |
| Year of the most recent visit: | 2019 |
| Status of the target tree population regarding the EUFORGEN common action plans.: | |
| Category of the population: | In situ |
| Origin of the material: | Autochtonous |
| Predominant silvicultural system: | Close-to-natural forestry (continuous cover forest, selective logging) |
| Level of management allowed to favour the target species: | Minimum intervention allowed |
| Main reason for carrying out gene conservation for this species: | To conserve specific adaptive and/or phenotypic traits in marginal or scattered tree populations which are often relatively small |
| Total number of reproducing trees per unit: | 50 - 499 |
| Sex ratio, if appropriate: | |
| Status of long-term viable regeneration : | |
| Distribution of the reproducing trees in the unit (multiple choice): | In stands |
| Estimated share of the total area within the unit in which the species is occurring (%): | 48 |
| Remarks on the population: |