内网办公 | English | 中国科学院  
首页 | 机构概况 | 机构设置 | 科研成果 | 研究队伍 | 研究生教育 | 国际交流 | 院地合作 | 学术期刊 | 创新文化 | 图书馆
 
   
  科研成果
概况介绍
获奖
发表论文
专著
专利
在研项目
 
您的位置: 首页 >>> 研究成果
Variation and synchrony of tree species mast seeding in an old-growth temperate forest
论文题目: Variation and synchrony of tree species mast seeding in an old-growth temperate forest
第一作者: Yunyun Wang
刊物名称: JOURNAL OF VEGETATION SCIENCE
学科:
发表年度: 2017
卷:
期:
页码:
摘要:

Questions

Mast seeding, i.e. synchronous highly variable seed production among years, occurs in many perennial plant species and across diverse plant communities. Two predominant hypotheses for mast seeding are pollination efficiency and predator satiation, with weather conditions as a proximate cause. Little consensus has been achieved regarding the relative impacts of ultimate selection and proximate weather on variation in seed production. Moreover, mast-seeding studies often focus on a single species or phylogenetically closely related species, while studies on plant communities consisting of tree species with a diversity of reproductive strategies are less common.

Location

A 25-ha Changbaishan temperate forest dynamic plot, northeast China.

Methods

We used 8 yr of seed rain data to characterize patterns and evaluate underlying selective drivers of mast seeding. We employed generalized linear mixed-effects models (GLMMs) to analyse the relationships between inter-annual variability of mast seeding and weather conditions.

Results

All 20 species in this forest community exhibited high variability in annual seed production, but the magnitude of seed production among species was generally asynchronous across years. Wind-pollinated species had higher inter-annual variation of seed production than animal-pollinated species, while species dispersed by seed predators and abiotic modes (e.g. wind and gravity) showed little variation. Species responded individually to weather conditions for both temperature and precipitation, and spring phenology in the same year as seed production had a larger effect among species than both the weather conditions of the same summer and season-long lags.

Conclusions

Our findings suggest that pollination efficiency hypothesis had a much stronger effect than predation satiation hypothesis on mast seeding, and weather conditions demonstrated the proximate role of weather drivers in producing the community-wide mast-seeding pattern. We emphasize the need to simultaneously assess drivers of mast seeding for multiple species within a plant community.

 

全文链接: http://onlinelibrary.wiley.com/wol1/doi/10.1111/jvs.12494/abstract
影响因子: 3.151

关闭窗口

返回首页


网站地图联系我们︱流量分析
@ 2002-2009 中国科学院沈阳应用生态研究所 版权所有. ALL RIGHTS RESERVED.
辽ICP备05000862号 地 址:沈阳市沈河区文化路72号 邮政编码:110016
网管信箱:webmaster@iae.ac.cn