DOI: 10.1016/j.foreco.2017.06.014
Scopus记录号: 2-s2.0-85020415979
论文题名: Masting has different effects on seed predation by insects and birds in antarctic beech forests with no influence of forest management
作者: Soler R. ; Espelta J.M. ; Lencinas M.V. ; Peri P.L. ; Martínez Pastur G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 173
结束页码: 180
语种: 英语
英文关键词: Bird predation
; Insect predation
; Masting
; Nothofagus
; Predator satiation
; Seed production
Scopus关键词: Animals
; Birds
; Correlation methods
; Insect predation
; Masting
; Nothofagus
; Predator satiation
; Seed production
; Forestry
; bird
; deciduous forest
; deciduous tree
; forest management
; insect
; life history
; masting
; seed dispersal
; seed predation
; seed production
; seeding
; Aves
; Fagus
; Hexapoda
; Invertebrata
; Nothofagus
; Nothofagus antarctica
; Vertebrata
英文摘要: Mast seeding is characteristic of many long-lived tree species and widely proposed as a mechanism to reduce seed predation. However, whether the efficiency of this reproductive response may vary depending on type of seed predator (e.g., invertebrates vs. vertebrates) or depending on local characteristics, remains seldom explored. We evaluated for 8 yrs the patterns of seed production in antarctic beech (Nothofagus antarctica) forests related to management and its influence on insect and bird pre-dispersal seed predation. Along the study, mature seed production was highly variable across years (the population-level coefficient of variation, CVp: 0.98–1.14) and spatially synchronized (Pearson correlation coefficient: 0.83–0.86). Forest type (primary unmanaged, secondary-growth and managed stands) did not influence the amount of seed production nor masting patterns. Mean yearly seed predation by insects was higher than by birds, and their relationship with seeding patterns differed: i.e., while the proportion of seeds predated by insects increased during non-mast years maximum bird predation occurred in mast years. Therefore, predation by insects and birds showed a strong negative relationship. Our results suggest that effectiveness of masting to escape seed predators may be highly depend on the type of predator. We address whether this effect may be due to differences in life history traits among the seed predators involved (i.e., degree of host specificity, dispersal ability or the duration of the life-cycle) and whether an “imperfect” control of avian seed predation may partially be advantageous for the dynamics of the masting species to enhance seed dispersal. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64245
Appears in Collections: 影响、适应和脆弱性
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作者单位: Austral Center of Scientific Research (CADIC-CONICET), Houssay 200, Ushuaia, Tierra del Fuego, Argentina; CREAF, Cerdanyola del Vallès, Catalonia, Spain; CONICET, Rivadavia 1917, Ciudad de Buenos Aires, Buenos Aires, Argentina; INTA EEA Santa Cruz, Mahatma Ghandi 1322, Río Gallegos, Santa Cruz, Argentina; National University of Austral Patagonia (UNPA), Lisandro de la Torre 1070, Río Gallegos, Santa Cruz, Argentina
Recommended Citation:
Soler R.,Espelta J.M.,Lencinas M.V.,et al. Masting has different effects on seed predation by insects and birds in antarctic beech forests with no influence of forest management[J]. Forest Ecology and Management,2017-01-01,400