Localisation
SPREP LIBRARY
Éditeur
University of Hawaii Press
Année de publication:
2008
Lieu de publication
Hawaii
Description physique:
11 p.
Numéro d'appel
VF 6910 [EL]
Type de contenu
Langue
English
Identifiant de dossier:
73
Ancien numéro d'identification PEIN:
74577
Notes générales
Kept in vertical file collection|Available online
Disponible en ligne
Rubrique(s) thématique(s)
Invasive species - Impacts - Oceania
Invasive species - Biology - Oceania
Résumé
Verbesina encelioides (Cav.) Benth. & Hook. f. ex A. Gray, golden crownbeard, is a sunflower-like herbaceous annual plant ranging in height from 0.3 to 1.7 m with showy yellow flowers. It is native to the southwestern United States, the Mexican Plateau, and other parts of tropical America. Its invasive characteristics include high seed production (as many as 300-350 seeds per flower and multiple flowers per plant), seed dormancy, ability to tolerate dry conditions, and possible allelopathic effects. Disturbed areas with a relatively sandy substrate within warm, arid climate zones are vulnerable to invasion by V. encelioides. Veresina encelioides is found on all of the main Hawaiian islands except Ni'ihau but is particularly problematic on Midway and Kure Atoll, where it may threaten the habitat of nesting birds such as Laysan and black-footed albatrosses and Christmas and wedge-tailed shearwaters. Many other Pacific islands with similar habitats could be invaded by the V. encelioides. The plant has become naturalised in many other U.S. states, parts of South America, the Bahamas, Cuba, the Dominican Republic Puerto Rico, parts of Europe, Saudi Arabia, India, Ethiopia, Morocco, Botswana, Namibia, Israel, and Australia. It is a pest of various crops in the southern United States and India and is poisonous to sheep and cattle. Verbesina encelioides can be controlled via herbicides or mechanical means, but measures must be repeated due to the presence of persistent seed banks. Further research on V. encelioides is needed to understand its population dynamics, allelopathic properties, and impacts on natural ecosystems.
Thème(s):
Localisation
SPREP LIBRARY
Éditeur
University of Hawaii Press
Année de publication:
2008
Lieu de publication
Hawaii
Description physique:
11 p.
Numéro d'appel
VF 6910 [EL]
Type de contenu
Langue
English
Identifiant de dossier:
73
Ancien numéro d'identification PEIN:
74577
Notes générales
Kept in vertical file collection|Available online
Dossier créé: 15-Apr-2008
Dossier modifié: 19-Dec-2023