DOI: 10.1016/j.foreco.2015.01.019
Scopus记录号: 2-s2.0-84922657074
论文题名: Seed size and number make contrasting predictions on seed survival and dispersal dynamics: A case study from oil tea Camellia oleifera
作者: Xiao Z. ; Zhang Z. ; Krebs C.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 343 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Individual variation
; Oil tea Camellia oleifera
; Seed dispersal
; Seed number
; Seed size
; Seed survival
Scopus关键词: Animals
; Forecasting
; Forestry
; Fruits
; Oil shale
; Camellia oleifera
; Individual variation
; Seed dispersal
; Seed number
; Seed size
; Seed
; caching
; essential oil
; fruit
; individual variation
; seed dispersal
; seed size
; survival
; tea
; Animalia
; Camellia oleifera
; Rodentia
英文摘要: Seed size and number vary greatly both within and among plant individuals, populations or species. However, we know little about how individual variation in seed size and number relates to seed survival and dispersal dynamics in animal-dispersed plants. Based on the large-seed hypothesis and the predator satiation hypothesis, we developed a synthetic framework and testable predictions for how seed size and number interact to predict seed survival-dispersal patterns at the seed and tree scales, and tested for these effects using rodent-dispersed oil tea, Camellia oleifera. Our results showed that seed size and number varied considerably at both fruit and tree scales, and mean seed size for each fruit was negatively correlated with the number of seeds per fruit. We placed groups of individual-weighed seeds in a way that mimicked seed size and number from individual trees and tracked the fate of these seeds. This showed that seed survival in situ at source trees decreased with increasing seed size, but seed dispersal and the subsequent survival of dispersed seeds increased with larger seed size. In addition, seed survival in situ at source trees increased with larger seed number per tree, but the proportion of dispersed seeds decreased as seed number per tree increased. We demonstrate that individual variation in seed size and number have strong but contrasting effects on seed survival and seed dispersal in oil tea. Moreover, these two factors are not independent in their effects on seed survival at the source tree, but after dispersal, the size of individual seeds may be more important in determining seed survival or further handling by scatterhoarding animals. © 2015 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65513
Appears in Collections: 影响、适应和脆弱性
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作者单位: State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing, China; Department of Zoology, University of British Columbia, 6270 University Blvd., Vancouver, BC, Canada
Recommended Citation:
Xiao Z.,Zhang Z.,Krebs C.J.. Seed size and number make contrasting predictions on seed survival and dispersal dynamics: A case study from oil tea Camellia oleifera[J]. Forest Ecology and Management,2015-01-01,343