Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/22690

Biology and Impacts of Pacific Island Invasive Species. 4. Verbesina encelioides, Golden Crownbeard (Magnoliopsida: Asteraceae).

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dc.contributor.author Feenstra, Kathleen R.
dc.contributor.author Clements, David R.
dc.date.accessioned 2012-05-21T22:39:54Z
dc.date.available 2012-05-21T22:39:54Z
dc.date.issued 2008-04
dc.identifier.citation Feenstra KR, Clements DR. Biology and Impacts of Pacific Island Invasive Species. 4. Verbesina encelioides, Golden Crownbeard (Magnoliopsida: Asteraceae). Pac Sci 62(2): 161-176.
dc.identifier.issn 0030-8870
dc.identifier.uri http://hdl.handle.net/10125/22690
dc.description v. ill. 23 cm.
dc.description Quarterly
dc.description.abstract 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. Verbesina 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 V. encelioides. The plant has become naturalized 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.
dc.format.extent 16 p.
dc.language.iso en-US
dc.publisher Honolulu, University of Hawaii Press
dc.relation.ispartofseries vol. 62, no. 2
dc.subject.lcsh Natural history--Periodicals.
dc.subject.lcsh Science--Periodicals
dc.subject.lcsh Natural history--Pacific Area--Periodicals.
dc.title Biology and Impacts of Pacific Island Invasive Species. 4. Verbesina encelioides, Golden Crownbeard (Magnoliopsida: Asteraceae).
dc.type Article
dc.type.dcmi Text
Appears in Collections: Pacific Science, Volume 62, Number 2, 2008


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