A Variety or a Separate Species?

Journal Title: Lesnoy Zhurnal (Russian Forestry Journal) - Year 2020, Vol 23, Issue 1

Abstract

Curly (Karelian) birch is a unique and highly valuable representative of woody flora, whose natural growth has been preserved only in the north-west of continental Europe. The article recapitulates the development of views on the taxonomic status and systematic position of the birch. We have analyzed the numerous facts and observations, which, from our perspective, bear record to correspondence of curly birch to the species taxonomic rank. It was done based on our own and published data, and in accordance with generally accepted criteria of the species (morphological, biochemical, genetic, reproductive, geographical, and ecological). The issues of separateness and relatedness of the birch to other representatives of the genus Betula L. are considered. It is emphasized that the recognition of curly birch as a separate biological species is important not only for scientific reasons, but also has great environmental significance since international and national nature protection documents, regulations and laws are focused on animals and plants with a species status.

Authors and Affiliations

L. V. Vetchinnikova, A. F. Titov

Keywords

Related Articles

Experimental and Theoretical Study of Heat Losses in Drying Cylinders

The research purpose is to develop methods for determination of heat losses in drying cylinders. Experimental study of temperature of drying cylinders performed in the drying section of a paper machine during its steady-...

Improving the Technology of Reforestation in Cuttings with the Use of Energy-Efficient Tractors

Currently applied partial reforestation in cuttings and removal of stumps by uprooting have a number of significant technological, environmental and economic disadvantages. These are removal of the humus layer of soil ou...

Laser Scanning and Aerial Photography with UAV in Studying the Structure of Forest-Tundra Stands in the Khibiny Mountains

Studying the structure of stands is a key point in assessing the role of trees in carbon deposition. Information on the spatial structure of ground vegetation at the upper treeline is still insufficiently presented in mo...

The State of Forests Growing on Iron Oxide-Saturated Soils of Azerbaijan

Today Azerbaijan focuses on the non-oil sector development. The mining industry is actively growing, to become one of its driving forces. This is detrimental to the ecology of the region. The intensive mining activity ha...

Increasing Sawn Timber Yield in Cant Sawing

The log cutting theory accepts that the volumetric yield of edged sawn timber from the maximum volume cant will be maximal. According to current standards, edged sawn timber must have specified thickness and width. Some...

Download PDF file
  • EP ID EP683246
  • DOI 10.37482/0536-1036-2020-1-26-48
  • Views 561
  • Downloads 1

How To Cite

L. V. Vetchinnikova, A. F. Titov (2020). A Variety or a Separate Species?. Lesnoy Zhurnal (Russian Forestry Journal), 23(1), -. https://www.europub.co.uk/articles/-A-683246