Invasive Species Compendium

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Abstract

An appraisal of the suitability of exotic Abies species for use in forestry within the Czech Republic, based on evaluation of growth characteristics in the Jíloviště-Cukrák locality at the age of 30 years.

Abstract

Twenty provenance research areas using Abies sp. progenies were established between 1973 & 1977. This paper evaluates the results for provenances grown within research plot no. 58 - Lesy Jíloviště, Cukrák. Established in 1975, the objective of this research project, was to test the maximum possible number of Abies alba provenances, and identify within the sample population those provenances possessing the greatest site tolerance and vitality under conditions in the Czech Republic. On the basis of those results it was planned to consider the possibilities of using suitable alternatives within the Abies genera as substitutes for Abies alba. Methodologically, Abies alba and other taxa of Abies genera are represented in six areas of the experimental set. Research plot no. 58 - Jíloviště, Cukrák is established within this set, comprising of the following basic planting structure (mostly as elements). A total of 27 provenances, 14 exotic taxa of Abies genera and 9 provenances of A. alba collected from other parts of the area are evaluated. The results are presented for each species. As an overview A. grandis was found to exceed average growth parameters, while retaining average mortality. So far (at age 30 years), this species has exceeded by four times the volume yield for A. alba. This conforms to similar evaluation results of A. grandis grown within the other experimental areas. The results for A. balsamea, indicate good vitality, but low volume yield and short longevity. A. concolor has good volume yield (mainly var. lowiana) but high (total) mortality and short longevity are also characteristics of this species. Individual provenances of A. borisii-regis and A. nordmanniana show variability in monitored indices, and therefore we recommend that they should be the subject of further research. A. pinsapo, A. cilicica, A. magnifica, A. bornmulleriana and A. lasiocarpa have been identified as unsuitable for use in the Czech Republic commercial forest management.