气候变化领域集成服务门户(CCPortal): Interannual fluctuations in floral longevity, pollinator visitation and pollination limitation of an alpine plant (Gentiana straminea Maxim., Gentianaceae) at two altitudes in the Qinghai-Tibetan Plateau

CCPortal

DOI	10.1007/s00606-007-0553-y
	Interannual fluctuations in floral longevity, pollinator visitation and pollination limitation of an alpine plant (Gentiana straminea Maxim., Gentianaceae) at two altitudes in the Qinghai-Tibetan Plateau
	Duan, Y.-W.; Zhang, T.-F.; Liu, J.-Q.
发表日期	2007
ISSN	0378-2697
EISSN	2199-6881
起始页码	255
结束页码	265
卷号	267 期号:1-4
英文摘要	Prolonged floral longevity and bumblebees as dominate pollinators in alpine ecosystem have been suggested to overcome pollination limitation of alpine plants arising from the decrease of pollinator activity with increasing altitude. However, this conclusion has never been examined in the Qinghai-Tibetan Plateau (QTP), the highest and largest plateau in the world. In this study, we intended to test year-to-year correlations between floral longevity, visiting frequency and pollen limitation of this species between two populations (at 3200 m and 4000 m) of Gentiana straminea in this plateau. Pollinator exclusion elongated both male and female phases greatly at both sites, and durations of both male and female phases in natural condition varied greatly over three years. The visiting frequency of bumblebees varied greatly at the higher altitude, but seemed to be stable at the lower altitude. Seed production was pollination limited in both populations in most studied years. The floral durations, pollinator frequency and pollination limitation showed no significant and consistent variations with the increase of altitude. The previous hypothesis that the prolonged floral longevity of alpine plants can compensate for low levels of pollinator visitation therefore could not be confirmed, and our results further suggested that in the QTP platform, the altitude shows no consistent effect on the reproductive performance of this species, despite that the fluctuation of visit frequency intensified at the higher altitude.
关键词	POLLEN LIMITATION REPRODUCTIVE SUCCESS ECOLOGY ENVIRONMENT POLEMONIUM TRAITS SYSTEM
英文关键词	visiting frequency; bumblebee pollination; pollination limitation; alpine plants
语种	英语
WOS研究方向	Plant Sciences ; Evolutionary Biology
WOS类目	Plant Sciences ; Evolutionary Biology
WOS记录号	WOS:000249460600019
来源期刊	PLANT SYSTEMATICS AND EVOLUTION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257501
推荐引用方式 GB/T 7714	Duan, Y.-W.,Zhang, T.-F.,Liu, J.-Q.. Interannual fluctuations in floral longevity, pollinator visitation and pollination limitation of an alpine plant (Gentiana straminea Maxim., Gentianaceae) at two altitudes in the Qinghai-Tibetan Plateau[J]. 中国科学院青藏高原研究所,2007,267(1-4).
APA	Duan, Y.-W.,Zhang, T.-F.,&Liu, J.-Q..(2007).Interannual fluctuations in floral longevity, pollinator visitation and pollination limitation of an alpine plant (Gentiana straminea Maxim., Gentianaceae) at two altitudes in the Qinghai-Tibetan Plateau.PLANT SYSTEMATICS AND EVOLUTION,267(1-4).
MLA	Duan, Y.-W.,et al."Interannual fluctuations in floral longevity, pollinator visitation and pollination limitation of an alpine plant (Gentiana straminea Maxim., Gentianaceae) at two altitudes in the Qinghai-Tibetan Plateau".PLANT SYSTEMATICS AND EVOLUTION 267.1-4(2007).