[article]
| 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 |
in American Journal of Botany > 89 (11) (December 2002) . - 1843-1846
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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Affiner la rechercheResponse of an allergenic species, Ambrosia psilostachya (Asteraceae), to experimental warming and clipping: implications for public health in American Journal of Botany, 89 (11) (December 2002)
