Rodent-Mediated Seed Dispersal Shapes Species Composition and Recruitment Dynamics in Ecotones
Rodent-Mediated Seed Dispersal Shapes Species Composition and Recruitment Dynamics in Ecotones
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啮齿动物介导的种子传播形状生态交错区的物种组成和补充动态
DOI：
10.3389/fpls.2018.01911
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发表时间：
2018-12
影响因子：
5.6
通讯作者：
Ma Jianmin
中科院分区：
文献类型：
--
作者：
Yu Fei;Shi Xiaoxiao;Yi Xianfeng;Ma Jianmin
生态交错带是一种独特的生态环境，边缘效应和生态交错带物种的概念已被广泛应用。最近的研究已经推进了我们对人口和社区对边缘效应的反应机制的理解。然而，几乎没有证据支持增加密度和物种丰富度的交错区啮齿动物介导的种子传播，在社区之间的边缘地块。华山松和栓皮栎群落是秦岭地区的典型群落。为了阐明生态交错带中树种组成和补充动态的形状，我们比较了松和橡树中分散囤积啮齿动物的二级和三级种子传播以及捕食的差异，以及两个物种在不同样地（即，5-8、15-18和27-30 m宽）。我们发现，松树和橡树的种子被迅速去除，在其交错带的不同地块的种子去除率没有差异。在5-8 m宽的交错带中，小型啮齿动物分别建立了13.0%和36.0%的松树和橡树散堆，在27-30 m宽的交错带中，小型啮齿动物分别建立了3.67%和7.33%的松树和橡树散堆。在5-8 m宽度的过渡带中，松树和栎类的幼苗密度显著高于15-18 m和27-30 m宽度的过渡带。根据种子传播和幼苗招聘模式的松树和橡树，不成比例的丰富的幼苗在交错区可能是由于至少部分由啮齿动物的种子缓存模式。
Ecotones are considered unique environments, and the concepts of edge effects and ecotonal species have been applied widely. Our understanding of the mechanisms that underlie population and community responses to edge effects has been advanced by recent studies. However, little evidence exists to support an increased density and species richness in ecotones regarding rodent-mediated seed dispersal in response to edge plots between communities. Pinus armandii and Quercus variabilis communities are typical of the Qinling Mountains, China. To elucidate what shapes tree species composition and recruitment dynamics in ecotones, we compared the differences in secondary and tertiary seed dispersal as well as predation in pine and oak by scatter-hoarding rodents as well as the regeneration characteristics of both species in their ecotones with different plots (i.e., 5–8, 15–18, and 27–30 m widths) in the eastern Qinling Mountains. We found that the seeds of pine and oak were removed rapidly, with no differences in the seed removal rates in their ecotones with different plots. Moreover, 13.0 and 36.0% of the scatter hoards of pine and oak, respectively, were established by small rodents in ecotones with a width of 5–8 m, and 3.67 and 7.33% in ecotones with a width of 27–30 m. The seedling densities of pine and oak were significantly higher in ecotones at widths of 5–8 m compared with widths of 15–18 and 27–30 m. According to the seed dispersal and seedling recruitment patterns of pine and oak, the disproportionate abundance of seedlings in ecotones may be due at least partly to patterns of seed caching by rodents.
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DOI：
--
发表时间：
1999
期刊：
Cellular Metabolism and Related Disorders
影响因子：
--
作者：
E. Schupp;J. Chambers;S. B. Wall;J. Gómez;Marcelino Fuentes;T. Milleron
通讯作者：
E. Schupp;J. Chambers;S. B. Wall;J. Gómez;Marcelino Fuentes;T. Milleron
影响因子：
5.5
作者：
G. Matlack
通讯作者：
G. Matlack
选择性伐木对啮齿动物介导的种子传播的影响
影响因子：
3.7
作者：
Yu Fei;Shi Xiaoxiao;Zhang Xue;Yi Xianfeng;Wang Dexiang;Ma Jianmin
通讯作者：
Ma Jianmin
影响因子：
4.8
作者：
J. Terborgh;Gabriela Nuñez;Iturri;Nigel;A. C.;Pitman;Fernando;-H.;Cornejo Valverde;Patrícia Alvarez;Varun Swamy;Elizabeth;-G.;Pringle;E. C.;Timothy Paine
通讯作者：
J. Terborgh;Gabriela Nuñez;Iturri;Nigel;A. C.;Pitman;Fernando;-H.;Cornejo Valverde;Patrícia Alvarez;Varun Swamy;Elizabeth;-G.;Pringle;E. C.;Timothy Paine
影响因子：
6.3
作者：
Harper, KA;Macdonald, SE;Esseen, PA
通讯作者：
Esseen, PA