橡子
生物
杏
种子散布
同感形态
栓皮栋
食果动物
囤积(动物行为)
植物
生物扩散
园艺
苗木
生态学
觅食
栖息地
人口
人口学
社会学
栽培
作者
Yifeng Zhang,Chuan Xu Wang,S-L Tian,J-Q Lu
出处
期刊:Iforest - Biogeosciences and Forestry
日期:2013-11-18
卷期号:7 (2): 70-74
被引量:10
摘要
Different species of forest trees exhibited great diversity in seed features, and rodents might take different tactics to handle and disperse them. In September 2011, to understand the discriminatory handling by rodents on sympatric seeds, seeds of four plant species, Quercus variabilis, Prunus armeniaca, P. davidiana, and P. persica, were released and tracked in a temperate forest in Yugong area of Jiyuan, Henan, north China. Results showed that: (1) seed removal rates of acorn (Q. variabilis), wild apricot (P. armeniaca) and wild peach (P. davidiana) differed significantly, while almost all (99%) peach seeds (P. persica) remained in situ; (2) acorns (55%) were eaten more than wild apricot (4%) and wild peach (0%), whereas seeds of wild apricot (62%) were scattered-hoarded more than wild peach (13%) and acorns (36%); hull thickness exerted a nonlinear influence on eating and scatter-hoarding; (3) rodents transported wild peach seeds farther (3.81 m ± 2.44 SE) than wild apricot seeds (3.41 m ± 2.05) and acorns (2.49 m ± 2.37); (4) rodents buried multiple wild apricot seeds in some caches, but seeds of wild peach and acorn were stored singly. Results indicated that, for sympatric seeds, rodents would adopt discriminatory processing and storing strategies in eating, burying, dispersal and cache size. Seeds with medium hull thickness were more likely to be dispersed and survived, and consequently have higher probability of future germination and seedling establishment.
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