Current issue: 53(3)

Under compilation: 53(4)

Impact factor 1.683
5-year impact factor 1.950
Silva Fennica 1926-1997
1990-1997
1980-1989
1970-1979
1960-1969
Acta Forestalia Fennica
1953-1968
1933-1952
1913-1932

Articles by Viljo Kujala

Category: Article

article id 7360, category Article
Viljo Kujala. (1942). Über die morphologische Deutung des Fichtenzapfens auf Grund eines Fertilisationsfalles. Acta Forestalia Fennica vol. 50 no. 7 article id 7360. https://doi.org/10.14214/aff.7360
English title: Morphologic interpretation of a spruce cone based on fertilization.
Original keywords: Fichte; Zapf; Fertilisation; Morfologie
English keywords: spruce; cone; fertilization; morphology

Article presents some rare cone formations found from a small spruce in region of Punkaharju, Finland. In this case all the scales have developed into perfect, green needle leaves. Instead of a normal scale of a cone there are formations of buds that on the basal part of a cone resemble a normal bud, and hence develop into a branch. On the upper part of the cone formation the bud develops into scale of a cone.

The morphological form of the cones has been interpreted many ways. These anomalies resemble earlier observations and hence support the former theory of inflorescence. According the theory, the scales and scales of a cone are separate leaves, the scale corresponding to one leaf, the scale of a cone corresponding to two leaves. A cone is hence rather to be compared with a branching inflorescence than only one flower.

The PDF contains a summary in Finnish. 

  • Kujala, ORCID ID:E-mail:
article id 7230, category Article
Viljo Kujala. (1929). Die Bestände und die ökologischen Horizontalschichten der Vegetation. Acta Forestalia Fennica vol. 34 no. 17 article id 7230. https://doi.org/10.14214/aff.7230
English title: Populations and the ecological layers of vegetation in horizontal direction.

To be able to exactly describe the similarities and differences of vegetation in certain areas, classifying the vegetation only in communities or formations is not enough. Therefore more classes are needed. The classification according the horizontal layers is based on the heights of plants and their relations to each other. Every population in one community has own area of height which extends to horizontal direction.

In comparison with populations the vegetation horizons create a biologically validated comparison of different vegetation groups and their parts. Defining the populations and vegetation horizons creates a division and systematization of plant communities on an ecological basis.       

The volume 34 of Acta Forestalia Fennica is a jubileum publication of professor Aimo Kaarlo Cajander.

  • Kujala, ORCID ID:E-mail:
article id 7057, category Article
Viljo Kujala. (1921). Havaintoja Kuusamon ja sen eteläpuolisten kuusimetsäalueiden metsä- ja suotyypeistä. Acta Forestalia Fennica vol. 18 no. 5 article id 7057. https://doi.org/10.14214/aff.7057
English title: Observations of forest and peatland site types in Norway spruce areas in Kuusamo.
The forest and peatland site types can be identified based on the ground vegetation. Grazing, forest fires, fellings and other interferences, altitude and soil, however, change the species composition. In Kuusamo area, the land is mountaneous, but the moraine layer is mostly continuous. Thus, there is relatively little rocky sites. In addition, the calcareous soil is more fertile than in the most parts of the country. Norway spruce (Picea abies (L.) H. Karst.) is common on Hylocomium-myrtillus site type, where vegetation differs to some extent from the corresponding forest site types in the southern parts of the country. These changes seem to be caused by the thin stands in the north. In the southern parts of the Kuusamo area, the stands are denser which affects the vegetation. In areas that have been burned, the dominant tree species is mostly Betula sp., and Norway spruce may grow in understorey, and the ground vegetation is herb-rich. The forest become thinner, the higher the altitude. This changes also ground vegetation. Norway spruce is also dominant species in the spruce swamps and transition zones between spruce swamps and the open peatland types.
  • Kujala, ORCID ID:E-mail:
article id 4553, category Article
Viljo Kujala. (1939). Luonnonsuojelusta. Silva Fennica no. 52 article id 4553. https://doi.org/10.14214/sf.a13960
English title: Nature conservation.

Silva Fennica issue 52 includes presentations held in professional development courses, arranged for foresters working in public administration in 1938. The presentations focus on practical issues in forest management and administration, especially in regional level. The education was arranged by Forest Service.

This presentation describes how need to conserve nature has been recognized in Finland, suggest ways how conservation of nature could be regarded in forest management and describes how it is regulated at present.

  • Kujala, ORCID ID:E-mail:

Register
Click this link to register for Silva Fennica submission and tracking system.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content
Your selected articles

Committee on Publication Ethics A Trusted Community-Governed Archive