灌丛高度对啮齿动物贮藏和扩散辽东栎坚果的影响

本文选择高、矮两类灌丛生境, 于2002 年至2003 年在其中释放标记的辽东栎坚果, 并连续记录释放坚果的命运, 以了解生境差异对啮齿动物搬运、取食和贮藏辽东栎坚果的影响以及啮齿动物对微生境的选择等。研究结果表明, 大林姬鼠等啮齿动物对辽东栎坚果的短期取食非常强烈, 而分散贮藏的量则相对较少; 啮齿动物对辽东栎坚果的搬运距离在矮灌丛生境中显著大于高灌丛生境; 啮齿动物倾向于选择灌丛边缘和灌丛下方取食或贮藏辽东栎坚果, 这类微生境也有利于埋藏坚果的萌发。

Effects of high and low shrubs on acorn hoarding and dispersal of Liaodong oak Quercus liaotungensis by small rodents

From 2002 o 2003,we arificially released acorns of Liaodong oak Quercus liaoungensis ,wihin wo habias of high and low shrub in Donglingshan mounains area,o invesigae he effecs of habias on acorns hoarding and dispersal by small rodens. he resuls of his sudy showed ha: rodens such as large field mouse Apodemus peninsulae predaed acorns of Liaodong oak inensively in relaively shor-erm and hey scaer hoarded fewer acorns; he mean ranspor disance of acorns in low shrub was significanly greaer han ha in high shrub; when predaing or hoarding acorns,rodens ended o cache acorns under shrub or a he shrub edge,which are favorable for germinaion and seedling esablishmen.