A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Race to the canopy: the development of tree size hierarchies following a partial disturbance in a boreal old-growth forest
Tekijät: Kulha Niko, Ahokas Antti, Gauthier Sylvie, Aakala Tuomas
Kustantaja: CANADIAN SCIENCE PUBLISHING
Julkaisuvuosi: 2023
Lehti: Canadian Journal of Forest Research
Tietokannassa oleva lehden nimi: CANADIAN JOURNAL OF FOREST RESEARCH
Lehden akronyymi: CAN J FOREST RES
Aloitussivu: 996
Lopetussivu: 1005
Sivujen määrä: 10
ISSN: 0045-5067
eISSN: 1208-6037
DOI: https://doi.org/10.1139/cjfr-2022-0224
Julkaisun avoimuus kirjaamishetkellä: Avoimesti saatavilla
Julkaisukanavan avoimuus : Osittain avoin julkaisukanava
Verkko-osoite: https://doi.org/10.1139/cjfr-2022-0224
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/180407325
Rinnakkaistallenteen lisenssi: CC BY
Rinnakkaistallennetun julkaisun versio: Kustantajan versio
In boreal old-growth forests, advance regeneration typically attains canopy dominance through growth release events fol-lowing partial disturbances. We sampled competing Picea mariana (Mill.) and Abies balsamea (L.) in disturbed old-growth stands in Quebec, Canada, to understand the intra-and interspecific size hierarchy development. We reconstructed tree size devel-opment and examined the role of initial size difference, time between germination and a disturbance, and the strength of response to the disturbance in determining tree size hierarchies. Trees that regenerated first generally dominated their in-traspecific competitors also following a disturbance event. However, prolonged time between germination and disturbance resulted in a less deterministic outcome. Tree size difference prior to disturbance also influenced the development of size hi-erarchies. In interspecific competition between individuals of the same diameter, A. balsamea had a 61% probability of gaining dominance over P. mariana, the probability being 50% if P. mariana was 5 mm larger than A. balsamea. Dominant trees generally had the strongest response to the disturbance, reinforcing the existing size hierarchies. The largest trees typically gain domi-nance after a partial disturbance. However, interspecific competition is less predictable than intraspecific competition, small initial size difference, and prolonged time in suppression potentially changing tree size hierarchies.
Avainsanat:
Abies balsamea, advance regeneration, old-growth forest, partial disturbance, Picea mariana, tree size hierarchy
Ladattava julkaisu This is an electronic reprint of the original article. |  |
