期刊
AMERICAN JOURNAL OF BOTANY
卷 96, 期 10, 页码 1821-1829出版社
WILEY
DOI: 10.3732/ajb.0800411
关键词
Boraginaceae; climate change; Delphinium; flower abundance; flowering phenology; frost; global warming; Mertensia; Ranunculaceae; Rocky Mountain Biological Laboratory; snowmelt
资金
- NSF [DEB 75-15422, DEB 78-07784, BSR 81-08387, DEB 94-08382, IBN-98-14509, DEB-0238331, DBI 0420910]
- Direct For Biological Sciences
- Division Of Environmental Biology [0922080] Funding Source: National Science Foundation
Variability in plant phenological responses to climate change is likely to lead to changes in many ecological relationships as the climate continues to change. We used a 34-yr record of flowering times and flower abundance for four species (two Delphinium [Ranunculaceae] species and two Mertensia [Boraginaceae] species) from a subalpine plant community near the Rocky Mountain Biological Laboratory to test the hypothesis that the phenologies of early-flowering species change more rapidly in response to climatological and other abiotic Cues than do late-flowering species, a pattern previously found in plant communities in North America and Europe. We also explored a related hypothesis, that flower abundance of late-flowering species is more responsive to changes in climate than that of early-flowering species. The Delphinium species did not support these hypotheses, but the Mertensia species did. The difference between the peak flowering times of the early and late Mertensia species is expanding, leading to a period of diminished resources for pollinators that specialize on this genus. Mertensia ciliata Populations are already severely declining in our study area, possibly as a result of earlier snowmelt. Together, these results show that the reported differences between early- and late-flowering species may be widespread, but they are not ubiquitous.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据