UDTR — Radar mondial des droits de la Nature

Distribution of self-seeded lodgepole pine (Pinus contorta DOUGLAS EX LOUDON) in South and West Iceland

Identification

Clé publique

radar:r-c32104f7f42b78ba6d4fd1275531d75b

Auteurs

Valdason, Árni

Année déclarée

2026

Langue déclarée

is

Type source

Dissertation

Première détection

2026-11-13T08:38:57.300734+00:00

Dernière observation des métadonnées

2026-11-13T08:38:57.300734+00:00

Dernière vérification HTTP

Non effectuée

Institutions déclarées par la source

University of Iceland

Résumé documentaire — langue originale

Lodgepole pine (Pinus contorta) is a popular tree species with a wide ecological niche. It originates from western North America but was introduced to Iceland in 1940 and has since been widely used in forestry plantations. However, its spread beyond planted areas has raised concern about potential impacts on local ecosystems. The study was conducted at 16 sites in West and South Iceland. The extent of lodgepole pine self-seeding was assessed using measurements of density, height, cone production, and distance from the edge of each plantation, together with an evaluation of the habitat types in which self-seeding occurred. The results suggest that lodgepole pine self-seeding is common and often occurs far beyond plantation boundaries where conditions are favourable. Although self-seeding seemed to be more common near the forest edge, numerous plants were found far from the plantation edge, which substantially shaped the overall pattern of spread. The findings indicate that wind could be considered an important driving factor in lodgepole pine dispersal: both self-seeding density and maximum distance were significantly higher in transects under stronger wind influence, and the spread pattern differed between leading wind directions. Additionally, characteristics of the plantation itself (especially the amount and height of lodgepole pine) primarily promoted greater maximum dispersal distance but did not show comparable effects on self-seeding density in the transects. Lodgepole pine dispersal seemed to be quite habitat selective, and was most efficient in open areas with low-stature vegetation, especially heathland, willow scrub, and grass heath, but was less pronounced on well-vegetated land, like wetlands and moss heaths. Overall, the study suggests that lodgepole pine has a substantial capacity to spread from plantations, especially where wind influence is strong and vegetation cover is sparse or damaged, and provides information indicating that wind, seed source characteristics, and environmental conditions that support lodgepole pine self-seeding in the wild could be considered in forestry risk assessment and in monitoring aimed at nature conservation.

Identifiants

DOI

10.5281/zenodo.23615391

ISBN

9789935578068

Repères documentaires

Famille documentaire

Thèse

Types déclarés par les sources

Dissertation

Éditeurs

University of Iceland

Les mentions d’entités ne constituent pas une preuve de reconnaissance juridique. La juridiction étudiée est distincte du pays d’affiliation des auteurs.

Sources

DataCite · Document 1

• Document · https://zenodo.org/doi/10.5281/zenodo.23615391

Statut documentaire

Pertinence à examiner

Bibliothèque

Cette identité n’est pas encore intégrée à la Bibliothèque juridique.