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Response of an allergenic species, Ambrosia psilostachya (Asteraceae), to experimental warming and clipping: implications for public health / Shiqiang Wan in American Journal of Botany, 89 (11) (December 2002) 

Public Citation [article]  inAmerican Journal of Botany > 89 (11) (December 2002) . - 1843-1846 Titre : Response of an allergenic species, Ambrosia psilostachya (Asteraceae), to experimental warming and clipping: implications for public health Type de document : Imprimé Auteurs : Shiqiang Wan ; Tong Yuan ; Sarah Bowdish ; Linda Wallace ; Scott D. Russell ; Yiqi Luo Année de publication : 2002 Article en page(s) : 1843-1846 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Ambrosia psilostachya DC., 1836 Résumé : We examined the responses of an allergenic species, western ragweed (Ambrosia psilostachya DC.), to experimental warming and clipping. The experiment was conducted in a tallgrass prairie in Oklahoma, USA, between 1999 and 2001. Warming increased ragweed stems by 88% when not clipped and 46% when clipped. Clipping increased ragweed stems by 75% and 36% in the control and warmed plots, respectively. In 2001, warming resulted in a 105% increase in ragweed aboveground biomass (AGB), and the ratio of ragweed AGB to total AGB increased by 79%. Dry mass per ragweed stem in the warmed plots was 37% and 38% greater than that in the control plots in 2000 and 2001, respectively. Although warming caused no difference in pollen production per stem, total pollen production increased by 84% (P < 0.05) because there were more ragweed stems. Experimental warming significantly increased pollen diameter from 21.2 μm in the control plots to 23.9 μm in the warmed plots (a 13% increase). The results from our experiment suggest that global warming could aggravate allergic hazards and thereby jeopardize public health. Lien pérenne : DOI : 10.3732/ajb.89.11.1843 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154118 Wan, Shiqiang, Yuan, Tong, Bowdish, Sarah, Wallace, Linda, Russell, Scott D., Luo, Yiqi 2002 Response of an allergenic species, Ambrosia psilostachya (Asteraceae), to experimental warming and clipping: implications for public health. American Journal of Botany, 89(11): 1843-1846.

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