Effects of masting on seedling establishment of a rodent-dispersed tree species in a warm-temperate region,northern China  

作　　者：Hongmao ZHANG Chuan YAN Shiqi WU Junjie SI Xianfeng YI Hongjun LI Zhibin ZHANG 

机构地区：[1]School of Life Sciences,Institute of Evolution and Ecology,Central China Normal University,Wuhan,China [2]State Key Laboratory of Integrated Management of Pest Insects and Rodents in Agriculture,Chinese Academy of Sciences,Institute of Zoology,Beijing,China [3]State Key Laboratory of Grassland Agro-ecosystem,Institute of Innovation Ecology&College of Life Sciences,Lanzhou University,Lanzhou,China [4]College of Life Sciences,Qufu Normal University,Qufu,China

出　　处：《Integrative Zoology》2021年第1期97-108,共12页整合动物学（英文版）

基　　金：supported by the National Natural Science Founda-tion of China(grant no.3177247,U1701246);the key project of the Chinese Academy of Sciences(grant nos.KJZD-EW-TZ-L01,XDB11050300).

摘　　要：Masting is an evolutionary strategy used by plants to promote seed survival and/or seed dispersal under animal predation,but its effects on seedling establishment in field condition are rarely tested by long-term experiments incorporating combined effects of seed and animal abundance.Here,we tracked seed production,rodent-mediated seed dispersal,and seedling establishment in Armeniaca sibirica from 2005 to 2014 in a warm-temperate forest in northern China,and examined the effects of seed abundance and per capita seed availability on seed fate and seedling recruitment rate.Our results showed that seed abundance or per capita seed availability generally benefited the seedling recruitment of A.sibirica through increasing dispersal intensity,supporting predator dispersal hypothesis.However,seedling recruitment showed satiated or even dome-shaped association with per capita seed availability,suggesting the benefit to trees would be decreased when seed abundance were too high as compared to rodent abundance(a satiated effect).Our results suggest that the predator dispersal and satiation effects of masting on seedling recruitment can operate together in one system and conditionally change with seed and animal abundance.

关 键 词：per capita seed availability predator dispersal hypothesis predator satiation hypothesis RODENTS seed dispersal 

分 类 号：Q95[生物学—动物学]