【摘要】 脊椎动物对栎属(Ｑｕｅｒｃｕｓ)坚果的捕食和传播是栎属通过实生苗更新的关键因子,栎属中一些物种坚果的分布格局以及动物对坚果的捕食作用已有较多研究[1～6]。一般情况下,栎属的坚果成熟落地后立即开始发芽,落在地表的坚果里的种子胚根长出后,由于地表枯落物的阻碍作用...更多还原

【Abstract】 Predation and dispersal of Quercus liaotungensis Koidz. acorns by Chinese Rock squirrel (Sciurotamias davidianus) and Eurasian jay (Garrulus glandarius) were examined in a Pinus tabulaeformis Carr. forest in Dongling Mountain. Both of them were important acorn dispersal agents. Chinese Rock squirrels frequently forage food in this forest. They consumed a small portion of acorns in situ, while they transported large quantities of acorns in their big cheek pouches. Eurasian jays have great capacity to transport acorns, although they were uncommon visitors to this forest. They carry acorns in their sublingual pouches to other forest. Of the 18 acorns scatterhoarded by a Chinese Rock squirrel, only 3 remained in two different caches 111 days after they were cached. These results indicate that vertebrates play an important role in acorn dispersal and seedling establishment of Quercus liaotungensis.更多还原