期刊
FUNCTIONAL ECOLOGY
卷 29, 期 1, 页码 5-14出版社
WILEY
DOI: 10.1111/1365-2435.12304
关键词
climate change; initial temperature; plant distribution; seed germination; temperature gradient
类别
资金
- FORKAST project [TP 12 Poschlod]
1. Reproductive stages of life cycle are important for the explanation of distribution patterns of plant species at different scales, due to their extreme vulnerability to environmental conditions. Despite reported evidences that seed germination is related to habitat macroclimatic characteristics such as mean annual temperature (MAT) and precipitation, the role of this trait in controlling plant species distribution is not systematically and quantitatively evaluated yet. Using the data on seed germination along a temperature gradient for 49 species originating from contrasting climatic conditions, we test here whether initial temperature of seed germination (T-min) is a direct correlate for predicting species distribution ranges along the temperature gradient. Our study reveals that T-min is strongly negatively correlated with habitat temperature; among the studied species, T-min clearly increased with decreasing MAT (r(2)=057, P<0001). Considering phylogenetic biases, co-evolution of seed traits as well as precipitation along with microclimatic factors did not affect the strength of this relationship. The results suggest that the T-min-MAT relation can provide insights particularly into species distribution patterns, vegetation dynamics and community assembly rules along altitudinal and latitudinal gradients. We argue that including the T-min in species distribution models may help to improve the accuracy and specificity of predictions of vegetation shifts under global change scenarios.
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