Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/17550874.2017.1341961 |
Seed mass, seed number and evolutionary trade-off across geographic distribution: do they explain invasiveness in Eschscholzia californica, central Chile? | |
Zamorano, Daniel1; Bustamante, Ramiro O.1,2 | |
通讯作者 | Bustamante, Ramiro O. |
来源期刊 | PLANT ECOLOGY & DIVERSITY |
ISSN | 1755-0874 |
EISSN | 1755-1668 |
出版年 | 2017 |
卷号 | 10期号:2-3页码:105-113 |
英文摘要 | Background: Seed mass is a life history trait that is related to invasiveness. Under limiting conditions, a trade-off is observed whereby an increase in seed mass occurs at the expense of seed numbers; if the above trade-off holds across climatic gradients it can provide an opportunity to assess the fitness/invasive potential of exotic plants. Aims: To examine the variation in the life history traits of Eschscholzia californica populations across climatic gradients and to relate these traits to observed invasiveness. Methods: We examined 19 populations in Chile. For each population we related seed mass, seed number, the slope of tradeoff between seed mass and number and plant density with annual precipitation and mean annual temperature. Results: Seed number and the coefficient of variation in seed mass were positively correlated with climatic variables. Tradeoff was detected in 26% of the populations and no relationship was detected with climatic gradient. Plant density was negatively associated with precipitation. Conclusions: The results suggest that for E. californica producing seeds with a variety of sizes is an optimal strategy to face geographic heterogeneity and hence to increase its invasiveness. Increased production of seeds at the cool and wet southern limit of the current range of the species does not contribute to an increase in its invasiveness. |
英文关键词 | Eschscholzia californica invasive plants seed mass seed number trade-off |
类型 | Article |
语种 | 英语 |
国家 | Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000413593900004 |
WOS关键词 | LIFE-HISTORY VARIATION ; CLIMATE-CHANGE ; SIZE ; PLANT ; DESERT ; CONSEQUENCES ; ADAPTATION ; GROWTH ; CROPS |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/201553 |
作者单位 | 1.Univ Chile, Dept Ecol, Santiago, Chile; 2.IEB, Santiago, Chile |
推荐引用方式 GB/T 7714 | Zamorano, Daniel,Bustamante, Ramiro O.. Seed mass, seed number and evolutionary trade-off across geographic distribution: do they explain invasiveness in Eschscholzia californica, central Chile?[J],2017,10(2-3):105-113. |
APA | Zamorano, Daniel,&Bustamante, Ramiro O..(2017).Seed mass, seed number and evolutionary trade-off across geographic distribution: do they explain invasiveness in Eschscholzia californica, central Chile?.PLANT ECOLOGY & DIVERSITY,10(2-3),105-113. |
MLA | Zamorano, Daniel,et al."Seed mass, seed number and evolutionary trade-off across geographic distribution: do they explain invasiveness in Eschscholzia californica, central Chile?".PLANT ECOLOGY & DIVERSITY 10.2-3(2017):105-113. |
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