EFI : European Forest Institute
The network for sustainable forest management of forests.

français espagnol portugais english

copyrigth IEFC network

Site code AR18

Location Laukiz

Region Basque Country

Country Spain

Local name Unbemendi1

Partner NEIKER


Site characteristics

Orientation: E, Slope:10.0°, Soil :CAMBISOLS, Bedrock : marly limestone

PH :6.0,5.5


Free draining with some wetter areas

Short History of the site

The Unbemendi arboreta are established in a land that belongs to the Provincial Council of Bizkaia (BFA). Unbemendi1 (AR18), Unbemendi2 (AR19) and Unbemendi3 (AR20) are 3 complete replicates of each arboretum to improve the robustness of the trial to test the responses to climate that these provenances show and to allow us to make powerful comparisons of their performance. The climate data comes from WORLDCLIM- Global Climate data for the reference period 1950-2000 except for the “frost days” figure that has been recorded from the closest point in the CRU_CL_2.0 gridded datasets. It has to be pointed out that WORLDCLIM underestimates precipitation for the region and that CRU overestimates the number of frost days. The Provincial Government ceded the land to the company Oihanberri in 1991: This Company was promoted by the Basque Government and the three provincial councils (Bizkaia, Gipuzkoa and Araba) to produce saplings of radiata pine (Pinus radiata D. Don) from genetically improved seeds. It was granted with 20 years of exploitation which could not be taken into an end because, in 2004, the Basque Government proposed the dissolution of the company. The plot has several facilities that are not in use at the moment (a warehouse, a facility for drying pine cones, a greenhouse, etc.). All of these infrastructures could be recovered and restored if needed and taking into account the availability of funds for it. It also has an artificial pond where the water required for the irrigation needed during the plant production process could be taken. The accesses to the plot and several ways that connect the different arboreta are in perfect condition. One of the radiata pine clonal orchards of the Basque Autonomous Community, where the genetic material from the breeding program of this species in the Basque Country is preserved, is located in this property. Currently Unbemendi that extends over 22 ha is kept for forest research and experimentation.

copyrigth IEFC network

List of species in the arboretum

Generalities of the site
Species on the site N of Prov. Initial tree N
Acer pseudoplatanus 1 26
Betula pendula 2 50
Calocedrus decurrens 2 22
Castanea sativa 2 32
Cedrus atlantica 2 48
Cedrus libani subsp. libani 3 28
Ceratonia siliqua 1 12
Cunninghamia lanceolata 1 18
Cupressus sempervirens 3 36
Eucalyptus globulus 1 12
Eucalyptus gundal 1 12
Eucalyptus nitens 1 12
Fagus sylvatica 3 75
Fagus sylvatica subsp. orientalis 3 35
Liquidambar styraciflua 1 12
Pinus brutia 2 24
Pinus caribaea var. hondurensis 1 5
Pinus elliottii 2 24
Pinus nigra subsp. laricio 2 50
Pinus nigra subsp. salzmannii 2 50
Pinus peuce 2 23
Pinus pinaster 7 174
Pinus pinea 4 48
Pinus ponderosa 3 35
Pinus sylvestris 7 175
Pinus taeda 3 38
Quercus ilex subsp. rotundifolia 5 120
Quercus petraea subsp. petraea 5 134
Quercus robur 6 150
Quercus rubra 2 24
Quercus shumardii 1 12
Quercus suber 5 113
Robinia pseudoacacia 3 35
Sequoia sempervirens 1 12
Thuja plicata 4 34