DOI: 10.1016/j.foreco.2016.08.038
Scopus记录号: 2-s2.0-84983541839
论文题名: Fast-growing seeds and delayed rodent predatory activity in the seeding season: A combined mechanism to escape and survive rodent predation in Quercus ilex subsp. ballota L. acorns and seedlings
作者: Leiva M.J. ; Díaz-Maqueda A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 380 起始页码: 23
结束页码: 30
语种: 英语
英文关键词: Acorn predation
; Cotyledon removal
; Holm-oak seedlings
; Recalcitrant seeds
Scopus关键词: Conservation
; Ecology
; Ecosystems
; Forestry
; Mammals
; Acorn predation
; Combined mechanisms
; Developmental stage
; Forest restoration
; Oak seedlings
; Quercus ilex subsp. ballota
; Seedling development
; Seedling survival
; Seed
; evergreen tree
; forest ecosystem
; predation risk
; propagule
; rodent
; seed
; seeding
; seedling
; sowing
; survival
; temporal analysis
; Ballota
; Mus
; Quercus ilex
; Rodentia
英文摘要: Holm-oak is a sclerophyllous Mediterranean species that presents relatively fast growing, non-dormant, desiccation-sensitive seeds. We investigated the importance of this trait for decreasing acorn predation risk and increasing seedling predation tolerance in combination with delaying the maximal predatory activity of rodents within the seeding season. The study was conducted in a Mediterranean savannah-like forest ecosystem. Temporal changes in acorn availability and predation by mice were studied during the acorn fall period. In a second experiment, propagules at different stages of development (acorns, rooted but un-emerged seedlings and emerged seedlings of different heights) were exposed to rodent predation at the end of the seeding season (end of winter). The results indicated that temporal changes in acorn availability (19–0.05 acorns m−2) and predation rate (0–0.11 acorns day−1) were negatively correlated; the lowest predation rate occurred when the food resource was at its highest (peak acorn fall). The developmental stage reached by propagules at the end of the seeding season significantly affected their ability to escape predation: 52–16% of emerged seedlings escaped predation by mice, but only 6% of rooted, un-emerged seedlings and 2% of acorns did so. Rodent predation of seedlings mostly consisted of cotyledon consumption and its effect on seedling survival was also significantly affected by developmental stage: 70% of emerged seedlings survived predation while only 17% of rooted, un-emerged seedling did so. The acorns did not survive at all. The results reinforce the ecological significance of non-dormancy and the associated rapid seed germination and seedling development facing early recruitment in holm-oak. We suggest that, in environments subject to high rodent predatory activity, early sowing of acorns during the seeding season should be considered in order to maximize the success of forest restoration. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64699
Appears in Collections: 影响、适应和脆弱性
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作者单位: Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, Apartado de correos 1095, Sevilla, Spain
Recommended Citation:
Leiva M.J.,Díaz-Maqueda A.. Fast-growing seeds and delayed rodent predatory activity in the seeding season: A combined mechanism to escape and survive rodent predation in Quercus ilex subsp. ballota L. acorns and seedlings[J]. Forest Ecology and Management,2016-01-01,380