Gutiérrez-Granados Gabriel
Department of Zoology, Institute of Biology, National Autonomous University of Mexico, Mexico DF, Mexico.
Integr Zool. 2011 Jun;6(2):74-80. doi: 10.1111/j.1749-4877.2011.00234.x.
The present study tested the hypothesis that logging affects the scatter-hoarding behavior of rodents, which, in turn, negatively affects the quantity and quality of Pouteria campechiana (Sapotaceae) seed dispersal. A series of seed stations was established in logged and unlogged forests of ejido Señor, Yucatan Peninsula, and comparisons were made between logged and unlogged forests in terms of: (i) seed removal; (ii) number of seeds hoarded; (iii) hoarding distance; and (iv) the number of recruits and the survival of hoarded seeds. The number of both hoarded and removed seeds was significantly higher in unlogged sites. Furthermore, the mean distance of hoarding was greater in unlogged compared with logged sites. Although recruitment and survival were present in both logged and unlogged sites, there were more surviving seedlings in unlogged sites. The data indicate that both the quantity and quality of seed dispersal are negatively affected by logging because of a change in the rodent scatter-hoarding dynamics. These changes suggest that plant-animal interactions are crucial to the understanding of the ecology and conservation of managed tropical forests.
伐木会影响啮齿动物的分散贮藏行为，进而对坎佩切鸡蛋果（山榄科）种子传播的数量和质量产生负面影响。在尤卡坦半岛塞尼奥尔村社的已伐林和未伐林中设立了一系列种子站，并在已伐林和未伐林之间就以下方面进行了比较：（i）种子移除情况；（ii）贮藏种子的数量；（iii）贮藏距离；以及（iv）新苗数量和贮藏种子的存活情况。未伐林地中贮藏和移除的种子数量均显著更高。此外，与已伐林地相比，未伐林地的平均贮藏距离更远。尽管已伐林和未伐林地均有新苗生长和种子存活，但未伐林地中存活的幼苗更多。数据表明，由于啮齿动物分散贮藏动态的变化，伐木对种子传播的数量和质量均产生了负面影响。这些变化表明，植物与动物之间的相互作用对于理解人工管理的热带森林的生态和保护至关重要。
