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Articles containing the keyword 'Abies alba'

Category : Article

article id 5577, category Article
Malgorzata Skrzypczynska. (1996). Relationship between Megastigmus suspectus Borr. size and Abies alba Mill. Seed size. Silva Fennica vol. 30 no. 1 article id 5577. https://doi.org/10.14214/sf.a9222
Keywords: seed size; seed; Abies alba; body size; Megastimus suspectus
Abstract | View details | Full text in PDF | Author Info

Investigation on the relationship between the size of the Megastigmus suspectus Borr. (Hymenoptera, Torymidae) and the size of Abies alba Mill. seeds from which those insects emerged was conducted. The examined insects (n = 46) originated from southern Poland, and were obtained from cones collected in 1993. M. suspectus thorax length was used as an index of adult insect size, because that was correlated with 8 other body measurements. In addition, the diameter of the emergence hole of this insect was measured. All data were log-transformed and analysed using regression analysis. There was no linear correlation between adult size and seed size, using either length of thorax or any of the other 8 body traits tested.

  • Skrzypczynska, E-mail: ms@mm.unknown (email)

Category : Article

article id 7529, category Article
Lauri Ilvessalo. (1913). Experiments with foreign tree species in state forest Vesijako, Finland. Acta Forestalia Fennica vol. 2 no. 2 article id 7529. https://doi.org/10.14214/aff.7529
Keywords: larch; Abies balsamea; Picea glauca; Pinus mugo; white spruce; balsam fir; Abies alba; Abies pectinata; Picea alba; Pinus strobus; Pinus montana; Pinus mugho; Siberian stone pine; Siberian fir; Abies sibirica o. pichta; white fir; Weymouth pine; European
Abstract | View details | Full text in PDF | Author Info

The study area is state owned forest of Vesijako in southern middle Finland that has earlier been intensively managed with slash-and-burn agriculture and then partly reforested with foreign coniferous tree species after controlled burnings. The total area planted with foreign species consists of 66 sample areas, altogether 28 hectares. The data has been collected in summer 1909. 

The most of studied sample areas have been unsuccessful, but there are still many areas that are too young to be assessed. The originally with foreign species reforested areas are now pine stands. The tree species in experiments have been e.g. larch (Larix sibirica and L. europaea), Siberian stone pine (Pinus cembra sibirica), Siberian fir (Abies sibirica o. pichta), balsam fir (Abies balsamea), white fir (Abies pectinate also Abies alba), white spruce (Picea alba also Picea glauca), Weymouth pinen (Pinus strobus) and European / Swiss mountain pine (Pinus montana  also P. mugo, P. mugho).

The most important result of the experiments with controlled burning is that stand of grey alder (Alnus incana) with only low economic value can be effectively altered into coniferous forests (Pinus silvestris).
  • Ilvessalo, E-mail: li@mm.unknown (email)

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